Xtensa ABI requires stack alignment to be at least 16. In noMMU
configuration ARCH_SLAB_MINALIGN is used to align stack. Make it at
least 16.
This fixes the following runtime error in noMMU configuration, caused by
interaction between insufficiently aligned stack and alloca function,
that results in corruption of on-stack variable in the libc function
glob:
Caught unhandled exception in 'sh' (pid = 47, pc = 0x02d05d65)
- should not happen
EXCCAUSE is 15
Cc: stable(a)vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc(a)gmail.com>
---
arch/xtensa/include/asm/processor.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
index e4ccb88b7996..677bc76c1d70 100644
--- a/arch/xtensa/include/asm/processor.h
+++ b/arch/xtensa/include/asm/processor.h
@@ -23,7 +23,11 @@
# error Linux requires the Xtensa Windowed Registers Option.
#endif
-#define ARCH_SLAB_MINALIGN XCHAL_DATA_WIDTH
+/* Xtensa ABI requires stack alignment to be at least 16 */
+
+#define STACK_ALIGN (XCHAL_DATA_WIDTH > 16 ? XCHAL_DATA_WIDTH : 16)
+
+#define ARCH_SLAB_MINALIGN STACK_ALIGN
/*
* User space process size: 1 GB.
--
2.11.0
Fix a MIPS `dma_alloc_coherent' regression from commit bc3ec75de545
("dma-mapping: merge direct and noncoherent ops") that causes a cached
allocation to be returned on noncoherent cache systems.
This is due to an inverted check now used in the MIPS implementation of
`arch_dma_alloc' on the result from `dma_direct_alloc_pages' before
doing the cached-to-uncached mapping of the allocation address obtained.
The mapping has to be done for a non-NULL rather than NULL result,
because a NULL result means the allocation has failed.
Invert the check for correct operation then.
Signed-off-by: Maciej W. Rozycki <macro(a)linux-mips.org>
Fixes: bc3ec75de545 ("dma-mapping: merge direct and noncoherent ops")
Cc: stable(a)vger.kernel.org # 4.19+
---
On Thu, 1 Nov 2018, Christoph Hellwig wrote:
> Fails to compile for me with:
>
> cc1: error: ‘-march=r3000’ requires ‘-mfp32’
>
> using the x86_64 corss gcc 8 from Debian testing.
Hmm, that seems related to the FPXX ABI, which the R3000 does not support
and which they may have configured as the default for GCC (`-mfpxx').
That's not relevant to the kernel, so we probably just ought to force
`-mfp32' and `-mfp64' for 32-bit and 64-bit builds respectively these
days.
> Either way the config looks like we have all the required bits for
> non-coherent dma support. The only guess is that somehow
> dma_cache_wback_inv aren't hooked up to the right functions for some
> reason, but I can't really think off why.
Well, `dma_cache_wback_inv' isn't actually called and with the 64-bit
configuration I switched to the address returned is in the XKPHYS cached
noncoherent space, as proved with a simple diagnostic patch applied to
`dma_direct_alloc' showing the results of `dev_is_dma_coherent' and the
actual allocation:
tc1: DEFTA at MMIO addr = 0x1e900000, IRQ = 20, Hardware addr = 08-00-2b-a3-a3-29
defxx tc1: dma_direct_alloc: coherent: 0
defxx tc1: dma_direct_alloc: returned: 9800000003db8000
tc1: registered as fddi0
(the value of 3 in bits 61:59 of the virtual address denotes the cached
noncoherent attribute).
The cause is commit bc3ec75de545 ("dma-mapping: merge direct and
noncoherent ops") reversed the interpretation of the `dma_direct_alloc*'
result in `arch_dma_alloc'. I guess this change was unlucky not to have
this part of the API actually verified at run-time by anyone anywhere.
Fixed thus, with debug output now as expected:
defxx tc1: dma_direct_alloc: coherent: 0
defxx tc1: dma_direct_alloc: returned: 9000000003db8000
showing the address returned in the XKPHYS uncached space (the value of 2
in bits 61:59 of the virtual address denotes the uncached attribute), and
the network interface working properly.
Please apply, and backport as required.
Maciej
---
arch/mips/mm/dma-noncoherent.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
linux-mips-arch-dma-alloc-err.patch
Index: linux-20181028-4maxp64-defconfig/arch/mips/mm/dma-noncoherent.c
===================================================================
--- linux-20181028-4maxp64-defconfig.orig/arch/mips/mm/dma-noncoherent.c
+++ linux-20181028-4maxp64-defconfig/arch/mips/mm/dma-noncoherent.c
@@ -50,7 +50,7 @@ void *arch_dma_alloc(struct device *dev,
void *ret;
ret = dma_direct_alloc_pages(dev, size, dma_handle, gfp, attrs);
- if (!ret && !(attrs & DMA_ATTR_NON_CONSISTENT)) {
+ if (ret && !(attrs & DMA_ATTR_NON_CONSISTENT)) {
dma_cache_wback_inv((unsigned long) ret, size);
ret = (void *)UNCAC_ADDR(ret);
}
This series fixes incorrect property because it was different
from the actual.
The commit 71b8dfc691a3 ("spi: uniphier: re-add addressing properties")
is the updated patch, therefore, it must be applied after
the commit 7662d1dc17d4 ("spi: uniphier: fix incorrect property items").
Changes since v1:
- Add commit 71b8dfc691a3 ("spi: uniphier: re-add addressing properties")
The addressing properties of #address-cells and #size-cells
are back again.
Keiji Hayashibara (2):
spi: uniphier: fix incorrect property items
spi: uniphier: re-add addressing properties
Documentation/devicetree/bindings/spi/spi-uniphier.txt | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
--
2.7.4
Commit 4d2c0cda07448ea6980f00102dc3964eb25e241c set slave->link to
BOND_LINK_DOWN for 802.3ad bonds whenever invalid speed/duplex values
were read, to fix a problem with slaves getting into weird states, but
in the process, broke tracking of link failures, as going straight to
BOND_LINK_DOWN when a link is indeed down (cable pulled, switch rebooted)
means we broke out of bond_miimon_inspect()'s BOND_LINK_DOWN case because
!link_state was already true, we never incremented commit, and never got
a chance to call bond_miimon_commit(), where slave->link_failure_count
would be incremented. I believe the simple fix here is to mark the slave
as BOND_LINK_FAIL, and let bond_miimon_inspect() transition the link from
_FAIL to either _UP or _DOWN, and in the latter case, we now get proper
incrementing of link_failure_count again.
Fixes: 4d2c0cda07448ea6980f00102dc3964eb25e241c
CC: Mahesh Bandewar <maheshb(a)google.com>
CC: David S. Miller <davem(a)davemloft.net>
CC: netdev(a)vger.kernel.org
CC: stable(a)vger.kernel.org
Signed-off-by: Jarod Wilson <jarod(a)redhat.com>
---
drivers/net/bonding/bond_main.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index ffa37adb7681..333387f1f1fe 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3112,13 +3112,13 @@ static int bond_slave_netdev_event(unsigned long event,
case NETDEV_CHANGE:
/* For 802.3ad mode only:
* Getting invalid Speed/Duplex values here will put slave
- * in weird state. So mark it as link-down for the time
+ * in weird state. So mark it as link-fail for the time
* being and let link-monitoring (miimon) set it right when
* correct speeds/duplex are available.
*/
if (bond_update_speed_duplex(slave) &&
BOND_MODE(bond) == BOND_MODE_8023AD)
- slave->link = BOND_LINK_DOWN;
+ slave->link = BOND_LINK_FAIL;
if (BOND_MODE(bond) == BOND_MODE_8023AD)
bond_3ad_adapter_speed_duplex_changed(slave);
--
2.16.1
From: Andrea Arcangeli <aarcange(a)redhat.com>
[ Upstream commit d7c3393413fe7e7dc54498ea200ea94742d61e18 ]
Patch series "migrate_misplaced_transhuge_page race conditions".
Aaron found a new instance of the THP MADV_DONTNEED race against
pmdp_clear_flush* variants, that was apparently left unfixed.
While looking into the race found by Aaron, I may have found two more
issues in migrate_misplaced_transhuge_page.
These race conditions would not cause kernel instability, but they'd
corrupt userland data or leave data non zero after MADV_DONTNEED.
I did only minor testing, and I don't expect to be able to reproduce this
(especially the lack of ->invalidate_range before migrate_page_copy,
requires the latest iommu hardware or infiniband to reproduce). The last
patch is noop for x86 and it needs further review from maintainers of
archs that implement flush_cache_range() (not in CC yet).
To avoid confusion, it's not the first patch that introduces the bug fixed
in the second patch, even before removing the
pmdp_huge_clear_flush_notify, that _notify suffix was called after
migrate_page_copy already run.
This patch (of 3):
This is a corollary of ced108037c2aa ("thp: fix MADV_DONTNEED vs. numa
balancing race"), 58ceeb6bec8 ("thp: fix MADV_DONTNEED vs. MADV_FREE
race") and 5b7abeae3af8c ("thp: fix MADV_DONTNEED vs clear soft dirty
race).
When the above three fixes where posted Dave asked
https://lkml.kernel.org/r/929b3844-aec2-0111-fef7-8002f9d4e2b9@intel.com
but apparently this was missed.
The pmdp_clear_flush* in migrate_misplaced_transhuge_page() was introduced
in a54a407fbf7 ("mm: Close races between THP migration and PMD numa
clearing").
The important part of such commit is only the part where the page lock is
not released until the first do_huge_pmd_numa_page() finished disarming
the pagenuma/protnone.
The addition of pmdp_clear_flush() wasn't beneficial to such commit and
there's no commentary about such an addition either.
I guess the pmdp_clear_flush() in such commit was added just in case for
safety, but it ended up introducing the MADV_DONTNEED race condition found
by Aaron.
At that point in time nobody thought of such kind of MADV_DONTNEED race
conditions yet (they were fixed later) so the code may have looked more
robust by adding the pmdp_clear_flush().
This specific race condition won't destabilize the kernel, but it can
confuse userland because after MADV_DONTNEED the memory won't be zeroed
out.
This also optimizes the code and removes a superfluous TLB flush.
[akpm(a)linux-foundation.org: reflow comment to 80 cols, fix grammar and typo (beacuse)]
Link: http://lkml.kernel.org/r/20181013002430.698-2-aarcange@redhat.com
Signed-off-by: Andrea Arcangeli <aarcange(a)redhat.com>
Reported-by: Aaron Tomlin <atomlin(a)redhat.com>
Acked-by: Mel Gorman <mgorman(a)suse.de>
Acked-by: Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com>
Cc: Jerome Glisse <jglisse(a)redhat.com>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org>
Signed-off-by: Sasha Levin <sashal(a)kernel.org>
---
mm/migrate.c | 25 ++++++++++++++++++-------
1 file changed, 18 insertions(+), 7 deletions(-)
diff --git a/mm/migrate.c b/mm/migrate.c
index 2a55289ee9f1..1990d1ccee29 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -2086,15 +2086,26 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm,
entry = maybe_pmd_mkwrite(pmd_mkdirty(entry), vma);
/*
- * Clear the old entry under pagetable lock and establish the new PTE.
- * Any parallel GUP will either observe the old page blocking on the
- * page lock, block on the page table lock or observe the new page.
- * The SetPageUptodate on the new page and page_add_new_anon_rmap
- * guarantee the copy is visible before the pagetable update.
+ * Overwrite the old entry under pagetable lock and establish
+ * the new PTE. Any parallel GUP will either observe the old
+ * page blocking on the page lock, block on the page table
+ * lock or observe the new page. The SetPageUptodate on the
+ * new page and page_add_new_anon_rmap guarantee the copy is
+ * visible before the pagetable update.
*/
flush_cache_range(vma, mmun_start, mmun_end);
page_add_anon_rmap(new_page, vma, mmun_start, true);
- pmdp_huge_clear_flush_notify(vma, mmun_start, pmd);
+ /*
+ * At this point the pmd is numa/protnone (i.e. non present) and the TLB
+ * has already been flushed globally. So no TLB can be currently
+ * caching this non present pmd mapping. There's no need to clear the
+ * pmd before doing set_pmd_at(), nor to flush the TLB after
+ * set_pmd_at(). Clearing the pmd here would introduce a race
+ * condition against MADV_DONTNEED, because MADV_DONTNEED only holds the
+ * mmap_sem for reading. If the pmd is set to NULL at any given time,
+ * MADV_DONTNEED won't wait on the pmd lock and it'll skip clearing this
+ * pmd.
+ */
set_pmd_at(mm, mmun_start, pmd, entry);
update_mmu_cache_pmd(vma, address, &entry);
@@ -2108,7 +2119,7 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm,
* No need to double call mmu_notifier->invalidate_range() callback as
* the above pmdp_huge_clear_flush_notify() did already call it.
*/
- mmu_notifier_invalidate_range_only_end(mm, mmun_start, mmun_end);
+ mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end);
/* Take an "isolate" reference and put new page on the LRU. */
get_page(new_page);
--
2.17.1
In d8ae72427187, start was changed to point to the character under the
cursor, instead of the beginning of the cleared area. The offset was
correctly applied when clearing the backing buffer, but not when
updating the framebuffer region. Fix this by having start point once
again to the beginning of the cleared area.
Cc: stable(a)vger.kernel.org
Fixes: d8ae72427187 ("vt: preserve unicode values corresponding to screen characters")
Signed-off-by: Samuel Holland <samuel(a)sholland.org>
---
drivers/tty/vt/vt.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 5f1183b0b89d..be7bc83d6c41 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1528,7 +1528,7 @@ static void csi_J(struct vc_data *vc, int vpar)
static void csi_K(struct vc_data *vc, int vpar)
{
unsigned int count;
- unsigned short *start = (unsigned short *)vc->vc_pos;
+ unsigned short *start;
int offset;
switch (vpar) {
@@ -1548,7 +1548,8 @@ static void csi_K(struct vc_data *vc, int vpar)
return;
}
vc_uniscr_clear_line(vc, vc->vc_x + offset, count);
- scr_memsetw(start + offset, vc->vc_video_erase_char, 2 * count);
+ start = (unsigned short *)vc->vc_pos + offset;
+ scr_memsetw(start, vc->vc_video_erase_char, 2 * count);
vc->vc_need_wrap = 0;
if (con_should_update(vc))
do_update_region(vc, (unsigned long) start, count);
--
2.18.1
If there's no entry to drop in bucket that corresponds to the hash,
early_drop() should look for it in other buckets. But since it increments
hash instead of bucket number, it actually looks in the same bucket 8
times: hsize is 16k by default (14 bits) and hash is 32-bit value, so
reciprocal_scale(hash, hsize) returns the same value for hash..hash+7 in
most cases.
Fix it by increasing bucket number instead of hash and rename _hash
to bucket to avoid future confusion.
Fixes: 3e86638e9a0b ("netfilter: conntrack: consider ct netns in early_drop logic")
Cc: <stable(a)vger.kernel.org> # v4.7+
Signed-off-by: Vasily Khoruzhick <vasilykh(a)arista.com>
---
v2: move 'bucket' outside of the loop
net/netfilter/nf_conntrack_core.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index ca1168d67fac..e92e749aff53 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -1073,19 +1073,22 @@ static unsigned int early_drop_list(struct net *net,
return drops;
}
-static noinline int early_drop(struct net *net, unsigned int _hash)
+static noinline int early_drop(struct net *net, unsigned int hash)
{
- unsigned int i;
+ unsigned int i, bucket;
for (i = 0; i < NF_CT_EVICTION_RANGE; i++) {
struct hlist_nulls_head *ct_hash;
- unsigned int hash, hsize, drops;
+ unsigned int hsize, drops;
rcu_read_lock();
nf_conntrack_get_ht(&ct_hash, &hsize);
- hash = reciprocal_scale(_hash++, hsize);
+ if (!i)
+ bucket = reciprocal_scale(hash, hsize);
+ else
+ bucket = (bucket + 1) % hsize;
- drops = early_drop_list(net, &ct_hash[hash]);
+ drops = early_drop_list(net, &ct_hash[bucket]);
rcu_read_unlock();
if (drops) {
--
2.19.1
We need to make sure, that the carrier check polling is disabled
while suspending. Otherwise we can end up with usbnet_read_cmd()
being issued when only usbnet_read_cmd_nopm() is allowed. If this
happens, read operations lock up.
Fixes: d69d169493 ("usbnet: smsc95xx: fix link detection for disabled autonegotiation")
Cc: <stable(a)vger.kernel.org>
Signed-off-by: Frieder Schrempf <frieder.schrempf(a)kontron.de>
---
Changes in v2:
* move cancel_delayed_work_sync() to correct error path
drivers/net/usb/smsc95xx.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 262e7a3..2d17f3b 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -1598,6 +1598,8 @@ static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
return ret;
}
+ cancel_delayed_work_sync(&pdata->carrier_check);
+
if (pdata->suspend_flags) {
netdev_warn(dev->net, "error during last resume\n");
pdata->suspend_flags = 0;
@@ -1840,6 +1842,11 @@ static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
*/
if (ret && PMSG_IS_AUTO(message))
usbnet_resume(intf);
+
+ if (ret)
+ schedule_delayed_work(&pdata->carrier_check,
+ CARRIER_CHECK_DELAY);
+
return ret;
}
--
2.7.4
From: Linus Torvalds <torvalds(a)linux-foundation.org>
Commit eb66ae030829605d61fbef1909ce310e29f78821 upstream.
This is a backport to stable 3.18.y, based on Will Deacon's 4.4.y
backport.
Jann Horn points out that our TLB flushing was subtly wrong for the
mremap() case. What makes mremap() special is that we don't follow the
usual "add page to list of pages to be freed, then flush tlb, and then
free pages". No, mremap() obviously just _moves_ the page from one page
table location to another.
That matters, because mremap() thus doesn't directly control the
lifetime of the moved page with a freelist: instead, the lifetime of the
page is controlled by the page table locking, that serializes access to
the entry.
As a result, we need to flush the TLB not just before releasing the lock
for the source location (to avoid any concurrent accesses to the entry),
but also before we release the destination page table lock (to avoid the
TLB being flushed after somebody else has already done something to that
page).
This also makes the whole "need_flush" logic unnecessary, since we now
always end up flushing the TLB for every valid entry.
Reported-and-tested-by: Jann Horn <jannh(a)google.com>
Acked-by: Will Deacon <will.deacon(a)arm.com>
Tested-by: Ingo Molnar <mingo(a)kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz(a)infradead.org>
Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
[will: backport to 4.4 stable]
Signed-off-by: Will Deacon <will.deacon(a)arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
[ghackmann(a)google.com: adjust context]
Signed-off-by: Greg Hackmann <ghackmann(a)google.com>
---
mm/huge_memory.c | 6 +++++-
mm/mremap.c | 21 ++++++++++++++++-----
2 files changed, 21 insertions(+), 6 deletions(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index bc402f39ac48..977437ee859b 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1462,7 +1462,7 @@ int move_huge_pmd(struct vm_area_struct *vma, struct vm_area_struct *new_vma,
spinlock_t *old_ptl, *new_ptl;
int ret = 0;
pmd_t pmd;
-
+ bool force_flush = false;
struct mm_struct *mm = vma->vm_mm;
if ((old_addr & ~HPAGE_PMD_MASK) ||
@@ -1490,6 +1490,8 @@ int move_huge_pmd(struct vm_area_struct *vma, struct vm_area_struct *new_vma,
if (new_ptl != old_ptl)
spin_lock_nested(new_ptl, SINGLE_DEPTH_NESTING);
pmd = pmdp_get_and_clear(mm, old_addr, old_pmd);
+ if (pmd_present(pmd))
+ force_flush = true;
VM_BUG_ON(!pmd_none(*new_pmd));
if (pmd_move_must_withdraw(new_ptl, old_ptl)) {
@@ -1498,6 +1500,8 @@ int move_huge_pmd(struct vm_area_struct *vma, struct vm_area_struct *new_vma,
pgtable_trans_huge_deposit(mm, new_pmd, pgtable);
}
set_pmd_at(mm, new_addr, new_pmd, pmd_mksoft_dirty(pmd));
+ if (force_flush)
+ flush_tlb_range(vma, old_addr, old_addr + PMD_SIZE);
if (new_ptl != old_ptl)
spin_unlock(new_ptl);
spin_unlock(old_ptl);
diff --git a/mm/mremap.c b/mm/mremap.c
index b147f66f4c40..62199110babc 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -97,6 +97,8 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd,
struct mm_struct *mm = vma->vm_mm;
pte_t *old_pte, *new_pte, pte;
spinlock_t *old_ptl, *new_ptl;
+ bool force_flush = false;
+ unsigned long len = old_end - old_addr;
/*
* When need_rmap_locks is true, we take the i_mmap_mutex and anon_vma
@@ -143,12 +145,26 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd,
if (pte_none(*old_pte))
continue;
pte = ptep_get_and_clear(mm, old_addr, old_pte);
+ /*
+ * If we are remapping a valid PTE, make sure
+ * to flush TLB before we drop the PTL for the PTE.
+ *
+ * NOTE! Both old and new PTL matter: the old one
+ * for racing with page_mkclean(), the new one to
+ * make sure the physical page stays valid until
+ * the TLB entry for the old mapping has been
+ * flushed.
+ */
+ if (pte_present(pte))
+ force_flush = true;
pte = move_pte(pte, new_vma->vm_page_prot, old_addr, new_addr);
pte = move_soft_dirty_pte(pte);
set_pte_at(mm, new_addr, new_pte, pte);
}
arch_leave_lazy_mmu_mode();
+ if (force_flush)
+ flush_tlb_range(vma, old_end - len, old_end);
if (new_ptl != old_ptl)
spin_unlock(new_ptl);
pte_unmap(new_pte - 1);
@@ -168,7 +184,6 @@ unsigned long move_page_tables(struct vm_area_struct *vma,
{
unsigned long extent, next, old_end;
pmd_t *old_pmd, *new_pmd;
- bool need_flush = false;
unsigned long mmun_start; /* For mmu_notifiers */
unsigned long mmun_end; /* For mmu_notifiers */
@@ -207,7 +222,6 @@ unsigned long move_page_tables(struct vm_area_struct *vma,
anon_vma_unlock_write(vma->anon_vma);
}
if (err > 0) {
- need_flush = true;
continue;
} else if (!err) {
split_huge_page_pmd(vma, old_addr, old_pmd);
@@ -224,10 +238,7 @@ unsigned long move_page_tables(struct vm_area_struct *vma,
extent = LATENCY_LIMIT;
move_ptes(vma, old_pmd, old_addr, old_addr + extent,
new_vma, new_pmd, new_addr, need_rmap_locks);
- need_flush = true;
}
- if (likely(need_flush))
- flush_tlb_range(vma, old_end-len, old_addr);
mmu_notifier_invalidate_range_end(vma->vm_mm, mmun_start, mmun_end);
--
2.19.1.930.g4563a0d9d0-goog
From: Changwei Ge <ge.changwei(a)h3c.com>
Subject: ocfs2: fix a misuse a of brelse after failing ocfs2_check_dir_entry
Somehow, file system metadata was corrupted, which causes
ocfs2_check_dir_entry() to fail in function ocfs2_dir_foreach_blk_el().
According to the original design intention, if above happens we should
skip the problematic block and continue to retrieve dir entry. But there
is obviouse misuse of brelse around related code.
After failure of ocfs2_check_dir_entry(), current code just moves to next
position and uses the problematic buffer head again and again during which
the problematic buffer head is released for multiple times. I suppose,
this a serious issue which is long-lived in ocfs2. This may cause other
file systems which is also used in a the same host insane.
So we should also consider about bakcporting this patch into
linux -stable.
Link: http://lkml.kernel.org/r/HK2PR06MB045211675B43EED794E597B6D56E0@HK2PR06MB04…
Signed-off-by: Changwei Ge <ge.changwei(a)h3c.com>
Suggested-by: Changkuo Shi <shi.changkuo(a)h3c.com>
Reviewed-by: Andrew Morton <akpm(a)linux-foundation.org>
Cc: Mark Fasheh <mark(a)fasheh.com>
Cc: Joel Becker <jlbec(a)evilplan.org>
Cc: Junxiao Bi <junxiao.bi(a)oracle.com>
Cc: Joseph Qi <jiangqi903(a)gmail.com>
Cc: <stable(a)vger.kernel.org>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
---
fs/ocfs2/dir.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/fs/ocfs2/dir.c~ocfs2-fix-a-misuse-a-of-brelse-after-failing-ocfs2_check_dir_entry
+++ a/fs/ocfs2/dir.c
@@ -1897,8 +1897,7 @@ static int ocfs2_dir_foreach_blk_el(stru
/* On error, skip the f_pos to the
next block. */
ctx->pos = (ctx->pos | (sb->s_blocksize - 1)) + 1;
- brelse(bh);
- continue;
+ break;
}
if (le64_to_cpu(de->inode)) {
unsigned char d_type = DT_UNKNOWN;
_
From: Andrea Arcangeli <aarcange(a)redhat.com>
Subject: mm: thp: relax __GFP_THISNODE for MADV_HUGEPAGE mappings
THP allocation might be really disruptive when allocated on NUMA system
with the local node full or hard to reclaim. Stefan has posted an
allocation stall report on 4.12 based SLES kernel which suggests the same
issue:
[245513.362669] kvm: page allocation stalls for 194572ms, order:9, mode:0x4740ca(__GFP_HIGHMEM|__GFP_IO|__GFP_FS|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_THISNODE|__GFP_MOVABLE|__GFP_DIRECT_RECLAIM), nodemask=(null)
[245513.363983] kvm cpuset=/ mems_allowed=0-1
[245513.364604] CPU: 10 PID: 84752 Comm: kvm Tainted: G W 4.12.0+98-ph <a href="/view.php?id=1" title="[geschlossen] Integration Ramdisk" class="resolved">0000001</a> SLE15 (unreleased)
[245513.365258] Hardware name: Supermicro SYS-1029P-WTRT/X11DDW-NT, BIOS 2.0 12/05/2017
[245513.365905] Call Trace:
[245513.366535] dump_stack+0x5c/0x84
[245513.367148] warn_alloc+0xe0/0x180
[245513.367769] __alloc_pages_slowpath+0x820/0xc90
[245513.368406] ? __slab_free+0xa9/0x2f0
[245513.369048] ? __slab_free+0xa9/0x2f0
[245513.369671] __alloc_pages_nodemask+0x1cc/0x210
[245513.370300] alloc_pages_vma+0x1e5/0x280
[245513.370921] do_huge_pmd_wp_page+0x83f/0xf00
[245513.371554] ? set_huge_zero_page.isra.52.part.53+0x9b/0xb0
[245513.372184] ? do_huge_pmd_anonymous_page+0x631/0x6d0
[245513.372812] __handle_mm_fault+0x93d/0x1060
[245513.373439] handle_mm_fault+0xc6/0x1b0
[245513.374042] __do_page_fault+0x230/0x430
[245513.374679] ? get_vtime_delta+0x13/0xb0
[245513.375411] do_page_fault+0x2a/0x70
[245513.376145] ? page_fault+0x65/0x80
[245513.376882] page_fault+0x7b/0x80
[...]
[245513.382056] Mem-Info:
[245513.382634] active_anon:126315487 inactive_anon:1612476 isolated_anon:5
active_file:60183 inactive_file:245285 isolated_file:0
unevictable:15657 dirty:286 writeback:1 unstable:0
slab_reclaimable:75543 slab_unreclaimable:2509111
mapped:81814 shmem:31764 pagetables:370616 bounce:0
free:32294031 free_pcp:6233 free_cma:0
[245513.386615] Node 0 active_anon:254680388kB inactive_anon:1112760kB active_file:240648kB inactive_file:981168kB unevictable:13368kB isolated(anon):0kB isolated(file):0kB mapped:280240kB dirty:1144kB writeback:0kB shmem:95832kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 81225728kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
[245513.388650] Node 1 active_anon:250583072kB inactive_anon:5337144kB active_file:84kB inactive_file:0kB unevictable:49260kB isolated(anon):20kB isolated(file):0kB mapped:47016kB dirty:0kB writeback:4kB shmem:31224kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 31897600kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
The defrag mode is "madvise" and from the above report it is clear that
the THP has been allocated for MADV_HUGEPAGA vma.
Andrea has identified that the main source of the problem is
__GFP_THISNODE usage:
: The problem is that direct compaction combined with the NUMA
: __GFP_THISNODE logic in mempolicy.c is telling reclaim to swap very
: hard the local node, instead of failing the allocation if there's no
: THP available in the local node.
:
: Such logic was ok until __GFP_THISNODE was added to the THP allocation
: path even with MPOL_DEFAULT.
:
: The idea behind the __GFP_THISNODE addition, is that it is better to
: provide local memory in PAGE_SIZE units than to use remote NUMA THP
: backed memory. That largely depends on the remote latency though, on
: threadrippers for example the overhead is relatively low in my
: experience.
:
: The combination of __GFP_THISNODE and __GFP_DIRECT_RECLAIM results in
: extremely slow qemu startup with vfio, if the VM is larger than the
: size of one host NUMA node. This is because it will try very hard to
: unsuccessfully swapout get_user_pages pinned pages as result of the
: __GFP_THISNODE being set, instead of falling back to PAGE_SIZE
: allocations and instead of trying to allocate THP on other nodes (it
: would be even worse without vfio type1 GUP pins of course, except it'd
: be swapping heavily instead).
Fix this by removing __GFP_THISNODE for THP requests which are requesting
the direct reclaim. This effectivelly reverts 5265047ac301 on the grounds
that the zone/node reclaim was known to be disruptive due to premature
reclaim when there was memory free. While it made sense at the time for
HPC workloads without NUMA awareness on rare machines, it was ultimately
harmful in the majority of cases. The existing behaviour is similar, if
not as widespare as it applies to a corner case but crucially, it cannot
be tuned around like zone_reclaim_mode can. The default behaviour should
always be to cause the least harm for the common case.
If there are specialised use cases out there that want zone_reclaim_mode
in specific cases, then it can be built on top. Longterm we should
consider a memory policy which allows for the node reclaim like behavior
for the specific memory ranges which would allow a
[1] http://lkml.kernel.org/r/20180820032204.9591-1-aarcange@redhat.com
Mel said:
: Both patches look correct to me but I'm responding to this one because
: it's the fix. The change makes sense and moves further away from the
: severe stalling behaviour we used to see with both THP and zone reclaim
: mode.
:
: I put together a basic experiment with usemem configured to reference a
: buffer multiple times that is 80% the size of main memory on a 2-socket
: box with symmetric node sizes and defrag set to "always". The defrag
: setting is not the default but it would be functionally similar to
: accessing a buffer with madvise(MADV_HUGEPAGE). Usemem is configured to
: reference the buffer multiple times and while it's not an interesting
: workload, it would be expected to complete reasonably quickly as it fits
: within memory. The results were;
:
: usemem
: vanilla noreclaim-v1
: Amean Elapsd-1 42.78 ( 0.00%) 26.87 ( 37.18%)
: Amean Elapsd-3 27.55 ( 0.00%) 7.44 ( 73.00%)
: Amean Elapsd-4 5.72 ( 0.00%) 5.69 ( 0.45%)
:
: This shows the elapsed time in seconds for 1 thread, 3 threads and 4
: threads referencing buffers 80% the size of memory. With the patches
: applied, it's 37.18% faster for the single thread and 73% faster with two
: threads. Note that 4 threads showing little difference does not indicate
: the problem is related to thread counts. It's simply the case that 4
: threads gets spread so their workload mostly fits in one node.
:
: The overall view from /proc/vmstats is more startling
:
: 4.19.0-rc1 4.19.0-rc1
: vanillanoreclaim-v1r1
: Minor Faults 35593425 708164
: Major Faults 484088 36
: Swap Ins 3772837 0
: Swap Outs 3932295 0
:
: Massive amounts of swap in/out without the patch
:
: Direct pages scanned 6013214 0
: Kswapd pages scanned 0 0
: Kswapd pages reclaimed 0 0
: Direct pages reclaimed 4033009 0
:
: Lots of reclaim activity without the patch
:
: Kswapd efficiency 100% 100%
: Kswapd velocity 0.000 0.000
: Direct efficiency 67% 100%
: Direct velocity 11191.956 0.000
:
: Mostly from direct reclaim context as you'd expect without the patch.
:
: Page writes by reclaim 3932314.000 0.000
: Page writes file 19 0
: Page writes anon 3932295 0
: Page reclaim immediate 42336 0
:
: Writes from reclaim context is never good but the patch eliminates it.
:
: We should never have default behaviour to thrash the system for such a
: basic workload. If zone reclaim mode behaviour is ever desired but on a
: single task instead of a global basis then the sensible option is to build
: a mempolicy that enforces that behaviour.
This was a severe regression compared to previous kernels that made
important workloads unusable and it starts when __GFP_THISNODE was
added to THP allocations under MADV_HUGEPAGE. It is not a significant
risk to go to the previous behavior before __GFP_THISNODE was added, it
worked like that for years.
This was simply an optimization to some lucky workloads that can fit in
a single node, but it ended up breaking the VM for others that can't
possibly fit in a single node, so going back is safe.
[mhocko(a)suse.com: rewrote the changelog based on the one from Andrea]
Link: http://lkml.kernel.org/r/20180925120326.24392-2-mhocko@kernel.org
Fixes: 5265047ac301 ("mm, thp: really limit transparent hugepage allocation to local node")
Signed-off-by: Andrea Arcangeli <aarcange(a)redhat.com>
Signed-off-by: Michal Hocko <mhocko(a)suse.com>
Reported-by: Stefan Priebe <s.priebe(a)profihost.ag>
Debugged-by: Andrea Arcangeli <aarcange(a)redhat.com>
Reported-by: Alex Williamson <alex.williamson(a)redhat.com>
Reviewed-by: Mel Gorman <mgorman(a)techsingularity.net>
Tested-by: Mel Gorman <mgorman(a)techsingularity.net>
Cc: Zi Yan <zi.yan(a)cs.rutgers.edu>
Cc: Vlastimil Babka <vbabka(a)suse.cz>
Cc: David Rientjes <rientjes(a)google.com>
Cc: "Kirill A. Shutemov" <kirill(a)shutemov.name>
Cc: <stable(a)vger.kernel.org> [4.1+]
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
---
mm/mempolicy.c | 32 ++++++++++++++++++++++++++++++--
1 file changed, 30 insertions(+), 2 deletions(-)
--- a/mm/mempolicy.c~mm-thp-relax-__gfp_thisnode-for-madv_hugepage-mappings
+++ a/mm/mempolicy.c
@@ -2060,8 +2060,36 @@ alloc_pages_vma(gfp_t gfp, int order, st
nmask = policy_nodemask(gfp, pol);
if (!nmask || node_isset(hpage_node, *nmask)) {
mpol_cond_put(pol);
- page = __alloc_pages_node(hpage_node,
- gfp | __GFP_THISNODE, order);
+ /*
+ * We cannot invoke reclaim if __GFP_THISNODE
+ * is set. Invoking reclaim with
+ * __GFP_THISNODE set, would cause THP
+ * allocations to trigger heavy swapping
+ * despite there may be tons of free memory
+ * (including potentially plenty of THP
+ * already available in the buddy) on all the
+ * other NUMA nodes.
+ *
+ * At most we could invoke compaction when
+ * __GFP_THISNODE is set (but we would need to
+ * refrain from invoking reclaim even if
+ * compaction returned COMPACT_SKIPPED because
+ * there wasn't not enough memory to succeed
+ * compaction). For now just avoid
+ * __GFP_THISNODE instead of limiting the
+ * allocation path to a strict and single
+ * compaction invocation.
+ *
+ * Supposedly if direct reclaim was enabled by
+ * the caller, the app prefers THP regardless
+ * of the node it comes from so this would be
+ * more desiderable behavior than only
+ * providing THP originated from the local
+ * node in such case.
+ */
+ if (!(gfp & __GFP_DIRECT_RECLAIM))
+ gfp |= __GFP_THISNODE;
+ page = __alloc_pages_node(hpage_node, gfp, order);
goto out;
}
}
_
stable-rc/linux-3.18.y build: 183 builds: 3 failed, 180 passed, 4 errors, 291 warnings (v3.18.124-131-g7e61c1e8ba56)
Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-3.18.y/kernel/v3.18.124-1…
Tree: stable-rc
Branch: linux-3.18.y
Git Describe: v3.18.124-131-g7e61c1e8ba56
Git Commit: 7e61c1e8ba569baf6f4b525cdffa9a545876f6e0
Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
Built: 4 unique architectures
Build Failures Detected:
arm: gcc version 7.3.0 (Debian 7.3.0-28)
exynos_defconfig: FAIL
multi_v7_defconfig: FAIL
omap2plus_defconfig: FAIL
Errors and Warnings Detected:
arm64: gcc version 7.3.0 (Debian 7.3.0-28)
allnoconfig: 2 warnings
defconfig: 2 warnings
tinyconfig: 2 warnings
arm: gcc version 7.3.0 (Debian 7.3.0-28)
acs5k_defconfig: 2 warnings
acs5k_tiny_defconfig: 2 warnings
allnoconfig: 2 warnings
am200epdkit_defconfig: 2 warnings
ape6evm_defconfig: 2 warnings
armadillo800eva_defconfig: 2 warnings
assabet_defconfig: 2 warnings
at91_dt_defconfig: 2 warnings
at91rm9200_defconfig: 2 warnings
at91sam9260_9g20_defconfig: 2 warnings
at91sam9261_9g10_defconfig: 2 warnings
at91sam9263_defconfig: 2 warnings
at91sam9g45_defconfig: 2 warnings
at91sam9rl_defconfig: 2 warnings
at91x40_defconfig: 2 warnings
axm55xx_defconfig: 2 warnings
badge4_defconfig: 2 warnings
bcm2835_defconfig: 2 warnings
bcm_defconfig: 2 warnings
bockw_defconfig: 2 warnings
cerfcube_defconfig: 2 warnings
clps711x_defconfig: 2 warnings
cm_x2xx_defconfig: 2 warnings
cm_x300_defconfig: 2 warnings
cns3420vb_defconfig: 2 warnings
colibri_pxa270_defconfig: 2 warnings
colibri_pxa300_defconfig: 2 warnings
collie_defconfig: 2 warnings
corgi_defconfig: 2 warnings
davinci_all_defconfig: 2 warnings
dove_defconfig: 2 warnings
ebsa110_defconfig: 2 warnings
efm32_defconfig: 2 warnings
em_x270_defconfig: 2 warnings
ep93xx_defconfig: 2 warnings
eseries_pxa_defconfig: 2 warnings
exynos_defconfig: 1 error, 2 warnings
ezx_defconfig: 2 warnings
footbridge_defconfig: 2 warnings
h3600_defconfig: 2 warnings
h5000_defconfig: 2 warnings
hackkit_defconfig: 2 warnings
hisi_defconfig: 2 warnings
imote2_defconfig: 2 warnings
imx_v4_v5_defconfig: 2 warnings
imx_v6_v7_defconfig: 2 warnings
integrator_defconfig: 2 warnings
iop13xx_defconfig: 2 warnings
iop32x_defconfig: 2 warnings
iop33x_defconfig: 2 warnings
ixp4xx_defconfig: 2 warnings
jornada720_defconfig: 2 warnings
keystone_defconfig: 2 warnings
koelsch_defconfig: 2 warnings
ks8695_defconfig: 2 warnings
kzm9g_defconfig: 2 warnings
lager_defconfig: 2 warnings
lart_defconfig: 2 warnings
lpc32xx_defconfig: 2 warnings
lpd270_defconfig: 2 warnings
lubbock_defconfig: 2 warnings
mackerel_defconfig: 2 warnings
magician_defconfig: 2 warnings
mainstone_defconfig: 2 warnings
marzen_defconfig: 2 warnings
mini2440_defconfig: 2 warnings
mmp2_defconfig: 2 warnings
moxart_defconfig: 2 warnings
msm_defconfig: 2 warnings
multi_v5_defconfig: 2 warnings
multi_v7_defconfig: 2 errors, 2 warnings
mv78xx0_defconfig: 2 warnings
mvebu_v5_defconfig: 2 warnings
mvebu_v7_defconfig: 2 warnings
mxs_defconfig: 2 warnings
neponset_defconfig: 2 warnings
netwinder_defconfig: 2 warnings
netx_defconfig: 2 warnings
nhk8815_defconfig: 2 warnings
nuc910_defconfig: 2 warnings
nuc950_defconfig: 2 warnings
nuc960_defconfig: 2 warnings
omap1_defconfig: 2 warnings
omap2plus_defconfig: 1 error, 2 warnings
orion5x_defconfig: 2 warnings
palmz72_defconfig: 2 warnings
pcm027_defconfig: 2 warnings
pleb_defconfig: 2 warnings
prima2_defconfig: 2 warnings
pxa168_defconfig: 2 warnings
pxa255-idp_defconfig: 2 warnings
pxa3xx_defconfig: 2 warnings
pxa910_defconfig: 2 warnings
qcom_defconfig: 2 warnings
raumfeld_defconfig: 2 warnings
realview-smp_defconfig: 2 warnings
realview_defconfig: 2 warnings
rpc_defconfig: 2 warnings
s3c2410_defconfig: 2 warnings
s3c6400_defconfig: 2 warnings
s5pv210_defconfig: 2 warnings
sama5_defconfig: 2 warnings
shannon_defconfig: 2 warnings
shmobile_defconfig: 2 warnings
simpad_defconfig: 2 warnings
socfpga_defconfig: 2 warnings
spear13xx_defconfig: 2 warnings
spear3xx_defconfig: 2 warnings
spear6xx_defconfig: 2 warnings
spitz_defconfig: 2 warnings
sunxi_defconfig: 2 warnings
tct_hammer_defconfig: 2 warnings
tegra_defconfig: 2 warnings
tinyconfig: 2 warnings
trizeps4_defconfig: 2 warnings
u300_defconfig: 2 warnings
u8500_defconfig: 2 warnings
versatile_defconfig: 2 warnings
vexpress_defconfig: 2 warnings
viper_defconfig: 2 warnings
vt8500_v6_v7_defconfig: 2 warnings
xcep_defconfig: 2 warnings
zeus_defconfig: 2 warnings
x86: gcc version 7.3.0 (Debian 7.3.0-29)
allnoconfig: 3 warnings
i386_defconfig: 3 warnings
tinyconfig: 3 warnings
x86_64_defconfig: 30 warnings
Errors summary:
2 drivers/clocksource/exynos_mct.c:490:26: error: 'mevt' undeclared (first use in this function); did you mean 'evt'?
2 arch/arm/mach-omap2/omap-headsmp.S:60: Error: bad instruction `badr r0,hyp_boot'
Warnings summary:
126 scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
126 scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
3 arch/x86/kernel/head_32.S:679: Warning: ignoring fill value in section `.bss..page_aligned'
3 arch/x86/kernel/head_32.S:677: Warning: ignoring fill value in section `.bss..page_aligned'
3 arch/x86/kernel/head_32.S:672: Warning: ignoring fill value in section `.bss..page_aligned'
2 include/linux/ftrace.h:632:36: warning: calling '__builtin_return_address' with a nonzero argument is unsafe [-Wframe-address]
1 net/sunrpc/clnt.c:527:46: warning: '%s' directive output may be truncated writing up to 107 bytes into a region of size 48 [-Wformat-truncation=]
1 lib/string_helpers.c:64:33: warning: '%03lld' directive output may be truncated writing between 3 and 13 bytes into a region of size 7 [-Wformat-truncation=]
1 kernel/relay.c:423:35: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=]
1 fs/nfs/client.c:1380:23: warning: '%u' directive output may be truncated writing between 1 and 7 bytes into a region of size between 3 and 6 [-Wformat-truncation=]
1 drivers/video/fbdev/core/../edid.h:74:72: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
1 drivers/usb/core/usb.c:471:9: warning: '%d' directive output may be truncated writing between 1 and 11 bytes into a region of size between 0 and 15 [-Wformat-truncation=]
1 drivers/usb/core/hcd.c:450:34: warning: '%s' directive output may be truncated writing up to 64 bytes into a region of size between 35 and 99 [-Wformat-truncation=]
1 drivers/net/ethernet/broadcom/tg3.c:11184:10: warning: '%d' directive output may be truncated writing between 1 and 11 bytes into a region of size between 0 and 15 [-Wformat-truncation=]
1 drivers/net/ethernet/broadcom/tg3.c:11181:9: warning: '-rx-' directive output may be truncated writing 4 bytes into a region of size between 1 and 16 [-Wformat-truncation=]
1 drivers/net/ethernet/broadcom/tg3.c:11178:9: warning: '-tx-' directive output may be truncated writing 4 bytes into a region of size between 1 and 16 [-Wformat-truncation=]
1 drivers/net/ethernet/broadcom/tg3.c:11175:9: warning: '-txrx-' directive output may be truncated writing 6 bytes into a region of size between 1 and 16 [-Wformat-truncation=]
1 drivers/input/mouse/psmouse-base.c:1466:52: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
1 drivers/input/mouse/lifebook.c:287:7: warning: '/input1' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
1 drivers/input/mouse/alps.c:2418:46: warning: '/input1' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
1 drivers/input/keyboard/atkbd.c:1069:7: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
1 drivers/ata/libata-core.c:2970:30: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
1 drivers/ata/libata-core.c:2969:30: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
1 drivers/ata/libata-core.c:2968:35: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
1 drivers/ata/libata-core.c:2967:32: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
1 drivers/ata/libata-core.c:2966:31: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
1 drivers/ata/libata-core.c:2965:30: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
1 drivers/ata/libata-core.c:2964:30: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
1 drivers/ata/libata-core.c:2963:30: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
1 drivers/ata/libata-core.c:2962:30: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
1 drivers/ata/libata-core.c:2141:42: warning: '%d' directive output may be truncated writing between 1 and 2 bytes into a region of size between 1 and 11 [-Wformat-truncation=]
1 block/partition-generic.c:41:37: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=]
1 block/partition-generic.c:39:36: warning: '%d' directive output may be truncated writing between 1 and 11 bytes into a region of size between 0 and 31 [-Wformat-truncation=]
1 block/elevator.c:841:14: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=]
================================================================================
Detailed per-defconfig build reports:
--------------------------------------------------------------------------------
acs5k_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
acs5k_tiny_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
allnoconfig (x86) — PASS, 0 errors, 3 warnings, 0 section mismatches
Warnings:
arch/x86/kernel/head_32.S:672: Warning: ignoring fill value in section `.bss..page_aligned'
arch/x86/kernel/head_32.S:677: Warning: ignoring fill value in section `.bss..page_aligned'
arch/x86/kernel/head_32.S:679: Warning: ignoring fill value in section `.bss..page_aligned'
--------------------------------------------------------------------------------
allnoconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
allnoconfig (arm64) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
allnoconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
am200epdkit_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
ape6evm_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
ar7_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
armadillo800eva_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
assabet_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
at91_dt_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
at91rm9200_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
at91sam9260_9g20_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
at91sam9261_9g10_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
at91sam9263_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
at91sam9g45_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
at91sam9rl_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
at91x40_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
ath79_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
axm55xx_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
badge4_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
bcm2835_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
bcm47xx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
bcm63xx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
bcm_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
bigsur_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
bockw_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
capcella_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
cavium_octeon_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
cerfcube_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
clps711x_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
cm_x2xx_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
cm_x300_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
cns3420vb_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
cobalt_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
colibri_pxa270_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
colibri_pxa300_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
collie_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
corgi_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
davinci_all_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
db1xxx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
decstation_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
defconfig (arm64) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
dove_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
e55_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
ebsa110_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
efm32_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
em_x270_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
ep93xx_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
eseries_pxa_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
exynos_defconfig (arm) — FAIL, 1 error, 2 warnings, 0 section mismatches
Errors:
drivers/clocksource/exynos_mct.c:490:26: error: 'mevt' undeclared (first use in this function); did you mean 'evt'?
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
ezx_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
footbridge_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
fuloong2e_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
gpr_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
h3600_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
h5000_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
hackkit_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
hisi_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
i386_defconfig (x86) — PASS, 0 errors, 3 warnings, 0 section mismatches
Warnings:
arch/x86/kernel/head_32.S:672: Warning: ignoring fill value in section `.bss..page_aligned'
arch/x86/kernel/head_32.S:677: Warning: ignoring fill value in section `.bss..page_aligned'
arch/x86/kernel/head_32.S:679: Warning: ignoring fill value in section `.bss..page_aligned'
--------------------------------------------------------------------------------
imote2_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
imx_v4_v5_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
imx_v6_v7_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
integrator_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
iop13xx_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
iop32x_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
iop33x_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
ip22_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
ip27_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
ip28_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
ip32_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
ixp4xx_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
jazz_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
jmr3927_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
jornada720_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
keystone_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
koelsch_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
ks8695_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
kzm9g_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
lager_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
lart_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
lasat_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
lemote2f_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
loongson3_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
lpc32xx_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
lpd270_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
ls1b_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
lubbock_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
mackerel_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
magician_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
mainstone_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
malta_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
malta_kvm_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
malta_kvm_guest_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
maltaaprp_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
maltasmvp_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
maltasmvp_eva_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
maltaup_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
markeins_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
marzen_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
mini2440_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
mips_paravirt_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
mmp2_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
moxart_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
mpc30x_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
msm_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
msp71xx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
mtx1_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
multi_v5_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
multi_v7_defconfig (arm) — FAIL, 2 errors, 2 warnings, 0 section mismatches
Errors:
arch/arm/mach-omap2/omap-headsmp.S:60: Error: bad instruction `badr r0,hyp_boot'
drivers/clocksource/exynos_mct.c:490:26: error: 'mevt' undeclared (first use in this function); did you mean 'evt'?
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
mv78xx0_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
mvebu_v5_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
mvebu_v7_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
mxs_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
neponset_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
netwinder_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
netx_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
nhk8815_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
nlm_xlp_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
nuc910_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
nuc950_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
nuc960_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
omap1_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
omap2plus_defconfig (arm) — FAIL, 1 error, 2 warnings, 0 section mismatches
Errors:
arch/arm/mach-omap2/omap-headsmp.S:60: Error: bad instruction `badr r0,hyp_boot'
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
orion5x_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
palmz72_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
pcm027_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
pleb_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
pnx8335_stb225_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
prima2_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
pxa168_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
pxa255-idp_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
pxa3xx_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
pxa910_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
qcom_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
qi_lb60_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
raumfeld_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
rb532_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
rbtx49xx_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
realview-smp_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
realview_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
rm200_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
rpc_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
rt305x_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
s3c2410_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
s3c6400_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
s5pv210_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
sama5_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
sb1250_swarm_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
sead3_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
sead3micro_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
shannon_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
shmobile_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
simpad_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
socfpga_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
spear13xx_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
spear3xx_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
spear6xx_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
spitz_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
sunxi_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
tb0219_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
tb0226_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
tb0287_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
tct_hammer_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
tegra_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
tinyconfig (x86) — PASS, 0 errors, 3 warnings, 0 section mismatches
Warnings:
arch/x86/kernel/head_32.S:672: Warning: ignoring fill value in section `.bss..page_aligned'
arch/x86/kernel/head_32.S:677: Warning: ignoring fill value in section `.bss..page_aligned'
arch/x86/kernel/head_32.S:679: Warning: ignoring fill value in section `.bss..page_aligned'
--------------------------------------------------------------------------------
tinyconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
tinyconfig (arm64) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
tinyconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
trizeps4_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
u300_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
u8500_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
versatile_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
vexpress_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
viper_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
vt8500_v6_v7_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
workpad_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
x86_64_defconfig (x86) — PASS, 0 errors, 30 warnings, 0 section mismatches
Warnings:
include/linux/ftrace.h:632:36: warning: calling '__builtin_return_address' with a nonzero argument is unsafe [-Wframe-address]
include/linux/ftrace.h:632:36: warning: calling '__builtin_return_address' with a nonzero argument is unsafe [-Wframe-address]
kernel/relay.c:423:35: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=]
block/elevator.c:841:14: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=]
block/partition-generic.c:39:36: warning: '%d' directive output may be truncated writing between 1 and 11 bytes into a region of size between 0 and 31 [-Wformat-truncation=]
block/partition-generic.c:41:37: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=]
fs/nfs/client.c:1380:23: warning: '%u' directive output may be truncated writing between 1 and 7 bytes into a region of size between 3 and 6 [-Wformat-truncation=]
lib/string_helpers.c:64:33: warning: '%03lld' directive output may be truncated writing between 3 and 13 bytes into a region of size 7 [-Wformat-truncation=]
drivers/ata/libata-core.c:2962:30: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
drivers/ata/libata-core.c:2963:30: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
drivers/ata/libata-core.c:2964:30: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
drivers/ata/libata-core.c:2965:30: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
drivers/ata/libata-core.c:2966:31: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
drivers/ata/libata-core.c:2967:32: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
drivers/ata/libata-core.c:2968:35: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
drivers/ata/libata-core.c:2969:30: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
drivers/ata/libata-core.c:2970:30: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
drivers/ata/libata-core.c:2141:42: warning: '%d' directive output may be truncated writing between 1 and 2 bytes into a region of size between 1 and 11 [-Wformat-truncation=]
drivers/input/keyboard/atkbd.c:1069:7: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
drivers/input/mouse/psmouse-base.c:1466:52: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
drivers/input/mouse/alps.c:2418:46: warning: '/input1' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
drivers/input/mouse/lifebook.c:287:7: warning: '/input1' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
drivers/net/ethernet/broadcom/tg3.c:11175:9: warning: '-txrx-' directive output may be truncated writing 6 bytes into a region of size between 1 and 16 [-Wformat-truncation=]
drivers/net/ethernet/broadcom/tg3.c:11178:9: warning: '-tx-' directive output may be truncated writing 4 bytes into a region of size between 1 and 16 [-Wformat-truncation=]
drivers/net/ethernet/broadcom/tg3.c:11181:9: warning: '-rx-' directive output may be truncated writing 4 bytes into a region of size between 1 and 16 [-Wformat-truncation=]
drivers/net/ethernet/broadcom/tg3.c:11184:10: warning: '%d' directive output may be truncated writing between 1 and 11 bytes into a region of size between 0 and 15 [-Wformat-truncation=]
net/sunrpc/clnt.c:527:46: warning: '%s' directive output may be truncated writing up to 107 bytes into a region of size 48 [-Wformat-truncation=]
drivers/usb/core/usb.c:471:9: warning: '%d' directive output may be truncated writing between 1 and 11 bytes into a region of size between 0 and 15 [-Wformat-truncation=]
drivers/usb/core/hcd.c:450:34: warning: '%s' directive output may be truncated writing up to 64 bytes into a region of size between 35 and 99 [-Wformat-truncation=]
drivers/video/fbdev/core/../edid.h:74:72: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
--------------------------------------------------------------------------------
xcep_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
--------------------------------------------------------------------------------
xway_defconfig (mips) — PASS, 0 errors, 0 warnings, 0 section mismatches
--------------------------------------------------------------------------------
zeus_defconfig (arm) — PASS, 0 errors, 2 warnings, 0 section mismatches
Warnings:
scripts/kconfig/confdata.c:767:19: warning: '%s' directive writing likely 7 or more bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
scripts/kconfig/confdata.c:770:20: warning: '.tmpconfig.' directive writing 11 bytes into a region of size between 1 and 4097 [-Wformat-overflow=]
---
For more info write to <info(a)kernelci.org>
From: Linus Torvalds <torvalds(a)linux-foundation.org>
Commit eb66ae030829605d61fbef1909ce310e29f78821 upstream.
This is a backport to stable 4.4.y.
Jann Horn points out that our TLB flushing was subtly wrong for the
mremap() case. What makes mremap() special is that we don't follow the
usual "add page to list of pages to be freed, then flush tlb, and then
free pages". No, mremap() obviously just _moves_ the page from one page
table location to another.
That matters, because mremap() thus doesn't directly control the
lifetime of the moved page with a freelist: instead, the lifetime of the
page is controlled by the page table locking, that serializes access to
the entry.
As a result, we need to flush the TLB not just before releasing the lock
for the source location (to avoid any concurrent accesses to the entry),
but also before we release the destination page table lock (to avoid the
TLB being flushed after somebody else has already done something to that
page).
This also makes the whole "need_flush" logic unnecessary, since we now
always end up flushing the TLB for every valid entry.
Reported-and-tested-by: Jann Horn <jannh(a)google.com>
Acked-by: Will Deacon <will.deacon(a)arm.com>
Tested-by: Ingo Molnar <mingo(a)kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz(a)infradead.org>
Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
[will: backport to 4.4 stable]
Signed-off-by: Will Deacon <will.deacon(a)arm.com>
---
mm/huge_memory.c | 6 +++++-
mm/mremap.c | 21 ++++++++++++++++-----
2 files changed, 21 insertions(+), 6 deletions(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index c4ea57ee2fd1..465786cd6490 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1511,7 +1511,7 @@ int move_huge_pmd(struct vm_area_struct *vma, struct vm_area_struct *new_vma,
spinlock_t *old_ptl, *new_ptl;
int ret = 0;
pmd_t pmd;
-
+ bool force_flush = false;
struct mm_struct *mm = vma->vm_mm;
if ((old_addr & ~HPAGE_PMD_MASK) ||
@@ -1539,6 +1539,8 @@ int move_huge_pmd(struct vm_area_struct *vma, struct vm_area_struct *new_vma,
if (new_ptl != old_ptl)
spin_lock_nested(new_ptl, SINGLE_DEPTH_NESTING);
pmd = pmdp_huge_get_and_clear(mm, old_addr, old_pmd);
+ if (pmd_present(pmd))
+ force_flush = true;
VM_BUG_ON(!pmd_none(*new_pmd));
if (pmd_move_must_withdraw(new_ptl, old_ptl)) {
@@ -1547,6 +1549,8 @@ int move_huge_pmd(struct vm_area_struct *vma, struct vm_area_struct *new_vma,
pgtable_trans_huge_deposit(mm, new_pmd, pgtable);
}
set_pmd_at(mm, new_addr, new_pmd, pmd_mksoft_dirty(pmd));
+ if (force_flush)
+ flush_tlb_range(vma, old_addr, old_addr + PMD_SIZE);
if (new_ptl != old_ptl)
spin_unlock(new_ptl);
spin_unlock(old_ptl);
diff --git a/mm/mremap.c b/mm/mremap.c
index fe7b7f65f4f4..450b306d473e 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -96,6 +96,8 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd,
struct mm_struct *mm = vma->vm_mm;
pte_t *old_pte, *new_pte, pte;
spinlock_t *old_ptl, *new_ptl;
+ bool force_flush = false;
+ unsigned long len = old_end - old_addr;
/*
* When need_rmap_locks is true, we take the i_mmap_rwsem and anon_vma
@@ -143,12 +145,26 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd,
if (pte_none(*old_pte))
continue;
pte = ptep_get_and_clear(mm, old_addr, old_pte);
+ /*
+ * If we are remapping a valid PTE, make sure
+ * to flush TLB before we drop the PTL for the PTE.
+ *
+ * NOTE! Both old and new PTL matter: the old one
+ * for racing with page_mkclean(), the new one to
+ * make sure the physical page stays valid until
+ * the TLB entry for the old mapping has been
+ * flushed.
+ */
+ if (pte_present(pte))
+ force_flush = true;
pte = move_pte(pte, new_vma->vm_page_prot, old_addr, new_addr);
pte = move_soft_dirty_pte(pte);
set_pte_at(mm, new_addr, new_pte, pte);
}
arch_leave_lazy_mmu_mode();
+ if (force_flush)
+ flush_tlb_range(vma, old_end - len, old_end);
if (new_ptl != old_ptl)
spin_unlock(new_ptl);
pte_unmap(new_pte - 1);
@@ -168,7 +184,6 @@ unsigned long move_page_tables(struct vm_area_struct *vma,
{
unsigned long extent, next, old_end;
pmd_t *old_pmd, *new_pmd;
- bool need_flush = false;
unsigned long mmun_start; /* For mmu_notifiers */
unsigned long mmun_end; /* For mmu_notifiers */
@@ -207,7 +222,6 @@ unsigned long move_page_tables(struct vm_area_struct *vma,
anon_vma_unlock_write(vma->anon_vma);
}
if (err > 0) {
- need_flush = true;
continue;
} else if (!err) {
split_huge_page_pmd(vma, old_addr, old_pmd);
@@ -224,10 +238,7 @@ unsigned long move_page_tables(struct vm_area_struct *vma,
extent = LATENCY_LIMIT;
move_ptes(vma, old_pmd, old_addr, old_addr + extent,
new_vma, new_pmd, new_addr, need_rmap_locks);
- need_flush = true;
}
- if (likely(need_flush))
- flush_tlb_range(vma, old_end-len, old_addr);
mmu_notifier_invalidate_range_end(vma->vm_mm, mmun_start, mmun_end);
--
2.1.4
There's no point to register the cpuidle driver for the current CPU, when
the initialization of the arch specific back-end data fails by returning
-ENXIO.
Instead, let's re-order the sequence to its original flow, by first trying
to initialize the back-end part and then act accordingly on the returned
error code. Additionally, let's print the error message, no matter of what
error code that was returned.
Signed-off-by: Ulf Hansson <ulf.hansson(a)linaro.org>
Fixes: a0d46a3dfdc3 ("ARM: cpuidle: Register per cpuidle device")
Cc: <stable(a)vger.kernel.org> # v4.19+
---
Changes in v2:
- Added a fixes and a stable tag.
---
drivers/cpuidle/cpuidle-arm.c | 22 ++++++++++------------
1 file changed, 10 insertions(+), 12 deletions(-)
diff --git a/drivers/cpuidle/cpuidle-arm.c b/drivers/cpuidle/cpuidle-arm.c
index 073557f433eb..df564d783216 100644
--- a/drivers/cpuidle/cpuidle-arm.c
+++ b/drivers/cpuidle/cpuidle-arm.c
@@ -103,13 +103,6 @@ static int __init arm_idle_init_cpu(int cpu)
goto out_kfree_drv;
}
- ret = cpuidle_register_driver(drv);
- if (ret) {
- if (ret != -EBUSY)
- pr_err("Failed to register cpuidle driver\n");
- goto out_kfree_drv;
- }
-
/*
* Call arch CPU operations in order to initialize
* idle states suspend back-end specific data
@@ -117,15 +110,20 @@ static int __init arm_idle_init_cpu(int cpu)
ret = arm_cpuidle_init(cpu);
/*
- * Skip the cpuidle device initialization if the reported
+ * Allow the initialization to continue for other CPUs, if the reported
* failure is a HW misconfiguration/breakage (-ENXIO).
*/
- if (ret == -ENXIO)
- return 0;
-
if (ret) {
pr_err("CPU %d failed to init idle CPU ops\n", cpu);
- goto out_unregister_drv;
+ ret = ret == -ENXIO ? 0 : ret;
+ goto out_kfree_drv;
+ }
+
+ ret = cpuidle_register_driver(drv);
+ if (ret) {
+ if (ret != -EBUSY)
+ pr_err("Failed to register cpuidle driver\n");
+ goto out_kfree_drv;
}
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
--
2.17.1
Quoting Dean Wallace (2018-10-25 16:25:17)
> I have found a regression in 4.18.15 that means I lose sound on my old
> Toshiba Chromebook 2 (Swanky). My system details are:-
>
> Toshiba Chromebook (Swanky)
> MrChromebox UEFI coreboot
> Arch Linux running latest alsa/pulseaudio
>
> Upgraded kernel from 4.18.14 to 4.18.15 and lost all sound output. By
> output I mean, the card is still detected, the module loaded, all apps
> showing sound is being playing, but no actual audible sound comes
> through. Upgraded to 4.18.16 same issue.
>
> Dug around and found Upstream commit 648e921888ad96ea3dc922739e96716ad3225d7f
> clk: x86: Stop marking clocks as CLK_IS_CRITICAL
> "This commit removes the CLK_IS_CRITICAL marking, fixing Cherry Trail
> devices not being able to reach S0i3 greatly decreasing their battery
> drain when suspended."
>
> I reverted it and compiled 4.18.16 and have sound back again. Could
> this be looked into, with possibility of fix.
>
Thanks for the bug report. I'm adding some people involved in the commit
you mention is causing audio regressions. The best plan is to probably
revert the commit from the 4.18 linux stable tree. Or there may be
another patch missing that would be useful to make this backported patch
work. Hopefully Hans or Andy knows.
This is an automatic generated email to let you know that the following patch were queued:
Subject: media: v4l: event: Prevent freeing event subscriptions while accessed
Author: Sakari Ailus <sakari.ailus(a)linux.intel.com>
Date: Tue Sep 11 05:32:37 2018 -0400
The event subscriptions are added to the subscribed event list while
holding a spinlock, but that lock is subsequently released while still
accessing the subscription object. This makes it possible to unsubscribe
the event --- and freeing the subscription object's memory --- while
the subscription object is simultaneously accessed.
Prevent this by adding a mutex to serialise the event subscription and
unsubscription. This also gives a guarantee to the callback ops that the
add op has returned before the del op is called.
This change also results in making the elems field less special:
subscriptions are only added to the event list once they are fully
initialised.
Signed-off-by: Sakari Ailus <sakari.ailus(a)linux.intel.com>
Reviewed-by: Hans Verkuil <hans.verkuil(a)cisco.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart(a)ideasonboard.com>
Cc: stable(a)vger.kernel.org # for 4.14 and up
Fixes: c3b5b0241f62 ("V4L/DVB: V4L: Events: Add backend")
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung(a)kernel.org>
drivers/media/v4l2-core/v4l2-event.c | 38 +++++++++++++++++++-----------------
drivers/media/v4l2-core/v4l2-fh.c | 2 ++
include/media/v4l2-fh.h | 4 ++++
3 files changed, 26 insertions(+), 18 deletions(-)
---
diff --git a/drivers/media/v4l2-core/v4l2-event.c b/drivers/media/v4l2-core/v4l2-event.c
index 127fe6eb91d9..a3ef1f50a4b3 100644
--- a/drivers/media/v4l2-core/v4l2-event.c
+++ b/drivers/media/v4l2-core/v4l2-event.c
@@ -115,14 +115,6 @@ static void __v4l2_event_queue_fh(struct v4l2_fh *fh, const struct v4l2_event *e
if (sev == NULL)
return;
- /*
- * If the event has been added to the fh->subscribed list, but its
- * add op has not completed yet elems will be 0, treat this as
- * not being subscribed.
- */
- if (!sev->elems)
- return;
-
/* Increase event sequence number on fh. */
fh->sequence++;
@@ -208,6 +200,7 @@ int v4l2_event_subscribe(struct v4l2_fh *fh,
struct v4l2_subscribed_event *sev, *found_ev;
unsigned long flags;
unsigned i;
+ int ret = 0;
if (sub->type == V4L2_EVENT_ALL)
return -EINVAL;
@@ -225,31 +218,36 @@ int v4l2_event_subscribe(struct v4l2_fh *fh,
sev->flags = sub->flags;
sev->fh = fh;
sev->ops = ops;
+ sev->elems = elems;
+
+ mutex_lock(&fh->subscribe_lock);
spin_lock_irqsave(&fh->vdev->fh_lock, flags);
found_ev = v4l2_event_subscribed(fh, sub->type, sub->id);
- if (!found_ev)
- list_add(&sev->list, &fh->subscribed);
spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
if (found_ev) {
+ /* Already listening */
kvfree(sev);
- return 0; /* Already listening */
+ goto out_unlock;
}
if (sev->ops && sev->ops->add) {
- int ret = sev->ops->add(sev, elems);
+ ret = sev->ops->add(sev, elems);
if (ret) {
- sev->ops = NULL;
- v4l2_event_unsubscribe(fh, sub);
- return ret;
+ kvfree(sev);
+ goto out_unlock;
}
}
- /* Mark as ready for use */
- sev->elems = elems;
+ spin_lock_irqsave(&fh->vdev->fh_lock, flags);
+ list_add(&sev->list, &fh->subscribed);
+ spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
- return 0;
+out_unlock:
+ mutex_unlock(&fh->subscribe_lock);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(v4l2_event_subscribe);
@@ -288,6 +286,8 @@ int v4l2_event_unsubscribe(struct v4l2_fh *fh,
return 0;
}
+ mutex_lock(&fh->subscribe_lock);
+
spin_lock_irqsave(&fh->vdev->fh_lock, flags);
sev = v4l2_event_subscribed(fh, sub->type, sub->id);
@@ -305,6 +305,8 @@ int v4l2_event_unsubscribe(struct v4l2_fh *fh,
if (sev && sev->ops && sev->ops->del)
sev->ops->del(sev);
+ mutex_unlock(&fh->subscribe_lock);
+
kvfree(sev);
return 0;
diff --git a/drivers/media/v4l2-core/v4l2-fh.c b/drivers/media/v4l2-core/v4l2-fh.c
index 3895999bf880..c91a7bd3ecfc 100644
--- a/drivers/media/v4l2-core/v4l2-fh.c
+++ b/drivers/media/v4l2-core/v4l2-fh.c
@@ -45,6 +45,7 @@ void v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev)
INIT_LIST_HEAD(&fh->available);
INIT_LIST_HEAD(&fh->subscribed);
fh->sequence = -1;
+ mutex_init(&fh->subscribe_lock);
}
EXPORT_SYMBOL_GPL(v4l2_fh_init);
@@ -90,6 +91,7 @@ void v4l2_fh_exit(struct v4l2_fh *fh)
return;
v4l_disable_media_source(fh->vdev);
v4l2_event_unsubscribe_all(fh);
+ mutex_destroy(&fh->subscribe_lock);
fh->vdev = NULL;
}
EXPORT_SYMBOL_GPL(v4l2_fh_exit);
diff --git a/include/media/v4l2-fh.h b/include/media/v4l2-fh.h
index ea73fef8bdc0..8586cfb49828 100644
--- a/include/media/v4l2-fh.h
+++ b/include/media/v4l2-fh.h
@@ -38,10 +38,13 @@ struct v4l2_ctrl_handler;
* @prio: priority of the file handler, as defined by &enum v4l2_priority
*
* @wait: event' s wait queue
+ * @subscribe_lock: serialise changes to the subscribed list; guarantee that
+ * the add and del event callbacks are orderly called
* @subscribed: list of subscribed events
* @available: list of events waiting to be dequeued
* @navailable: number of available events at @available list
* @sequence: event sequence number
+ *
* @m2m_ctx: pointer to &struct v4l2_m2m_ctx
*/
struct v4l2_fh {
@@ -52,6 +55,7 @@ struct v4l2_fh {
/* Events */
wait_queue_head_t wait;
+ struct mutex subscribe_lock;
struct list_head subscribed;
struct list_head available;
unsigned int navailable;
On 02/11/2018 08:26, Jan Beulich wrote:
>>>> On 01.11.18 at 17:27, <jgross(a)suse.com> wrote:
>> On 01/11/2018 16:50, Jan Beulich wrote:
>>>>>> Juergen Gross <jgross(a)suse.com> 11/01/18 3:23 PM >>>
>>>> On 01/11/2018 15:18, Jan Beulich wrote:
>>>>>>>> Juergen Gross <jgross(a)suse.com> 11/01/18 1:34 PM >>>
>>>>>> Currently the size of hypercall buffers allocated via
>>>>>> /dev/xen/hypercall is limited to a default of 64 memory pages. For live
>>>>>> migration of guests this might be too small as the page dirty bitmask
>>>>>> needs to be sized according to the size of the guest. This means
>>>>>> migrating a 8GB sized guest is already exhausting the default buffer
>>>>>> size for the dirty bitmap.
>>>>>>
>>>>>> There is no sensible way to set a sane limit, so just remove it
>>>>>> completely. The device node's usage is limited to root anyway, so there
>>>>>> is no additional DOS scenario added by allowing unlimited buffers.
>>>>>
>>>>> But is this setting of permissions what we want long term? What about a
>>>>> de-privileged qemu, which still needs to be able to issue at least dm-op
>>>>> hypercalls?
>>>>
>>>> Wouldn't that qemu have opened the node while still being privileged?
>>>
>>> Possibly, but how does this help? As soon as it's unprivileged it must not
>>> be able to hog resources anymore.
>>>
>>> Anyway, with Andrew's reply my point may be irrelevant, but I have to
>>> admit I'm not entirely sure.
>>
>> I guess we want Xen tools to close /dev/xen/hypercall (or more precise:
>> don't dup2() it) when qemu is de-privileging itself. This will make it
>> very clear that it can't hog memory via mmap().
>>
>> When you are fine with that I'll send a Xen patch for this.
>
> If that doesn't prevent the process from making the hypercalls it
> is permitted to do (I have to admit I don't recall if there are any
> still needed besides the dmop ones), sure.
Turns out that is already done: the restrict_all callback of libxencall
will associate /dev/null with the file descriptor of /dev/xen/hypercall.
Juergen
On Fri, Nov 02, 2018 at 06:13:17AM +0100, gregkh(a)linuxfoundation.org wrote:
>
> This is a note to let you know that I've just added the patch titled
>
> bridge: do not add port to router list when receives query with source 0.0.0.0
>
> to the 4.18-stable tree which can be found at:
> http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
>
> The filename of the patch is:
> bridge-do-not-add-port-to-router-list-when-receives-query-with-source-0.0.0.0.patch
> and it can be found in the queue-4.18 subdirectory.
>
> If you, or anyone else, feels it should not be added to the stable tree,
> please let <stable(a)vger.kernel.org> know about it.
Hi,
Please also include patch
commit 0fe5119e267f3e3d8ac206895f5922195ec55a8a
Author: Nikolay Aleksandrov <nikolay(a)cumulusnetworks.com>
Date: Sat Oct 27 12:07:47 2018 +0300
net: bridge: remove ipv6 zero address check in mcast queries
which fixed the patch.
Thanks
Hangbin
>
>
> From foo@baz Fri Nov 2 06:12:44 CET 2018
> From: Hangbin Liu <liuhangbin(a)gmail.com>
> Date: Fri, 26 Oct 2018 10:28:43 +0800
> Subject: bridge: do not add port to router list when receives query with source 0.0.0.0
>
> From: Hangbin Liu <liuhangbin(a)gmail.com>
>
> [ Upstream commit 5a2de63fd1a59c30c02526d427bc014b98adf508 ]
>
> Based on RFC 4541, 2.1.1. IGMP Forwarding Rules
>
> The switch supporting IGMP snooping must maintain a list of
> multicast routers and the ports on which they are attached. This
> list can be constructed in any combination of the following ways:
>
> a) This list should be built by the snooping switch sending
> Multicast Router Solicitation messages as described in IGMP
> Multicast Router Discovery [MRDISC]. It may also snoop
> Multicast Router Advertisement messages sent by and to other
> nodes.
>
> b) The arrival port for IGMP Queries (sent by multicast routers)
> where the source address is not 0.0.0.0.
>
> We should not add the port to router list when receives query with source
> 0.0.0.0.
>
> Reported-by: Ying Xu <yinxu(a)redhat.com>
> Signed-off-by: Hangbin Liu <liuhangbin(a)gmail.com>
> Acked-by: Nikolay Aleksandrov <nikolay(a)cumulusnetworks.com>
> Acked-by: Roopa Prabhu <roopa(a)cumulusnetworks.com>
> Signed-off-by: David S. Miller <davem(a)davemloft.net>
> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
> ---
> net/bridge/br_multicast.c | 10 +++++++++-
> 1 file changed, 9 insertions(+), 1 deletion(-)
>
> --- a/net/bridge/br_multicast.c
> +++ b/net/bridge/br_multicast.c
> @@ -1420,7 +1420,15 @@ static void br_multicast_query_received(
> return;
>
> br_multicast_update_query_timer(br, query, max_delay);
> - br_multicast_mark_router(br, port);
> +
> + /* Based on RFC4541, section 2.1.1 IGMP Forwarding Rules,
> + * the arrival port for IGMP Queries where the source address
> + * is 0.0.0.0 should not be added to router port list.
> + */
> + if ((saddr->proto == htons(ETH_P_IP) && saddr->u.ip4) ||
> + (saddr->proto == htons(ETH_P_IPV6) &&
> + !ipv6_addr_any(&saddr->u.ip6)))
> + br_multicast_mark_router(br, port);
> }
>
> static int br_ip4_multicast_query(struct net_bridge *br,
>
>
> Patches currently in stable-queue which might be from liuhangbin(a)gmail.com are
>
> queue-4.18/bridge-do-not-add-port-to-router-list-when-receives-query-with-source-0.0.0.0.patch
On 01/11/2018 16:50, Jan Beulich wrote:
>>>> Juergen Gross <jgross(a)suse.com> 11/01/18 3:23 PM >>>
>> On 01/11/2018 15:18, Jan Beulich wrote:
>>>>>> Juergen Gross <jgross(a)suse.com> 11/01/18 1:34 PM >>>
>>>> Currently the size of hypercall buffers allocated via
>>>> /dev/xen/hypercall is limited to a default of 64 memory pages. For live
>>>> migration of guests this might be too small as the page dirty bitmask
>>>> needs to be sized according to the size of the guest. This means
>>>> migrating a 8GB sized guest is already exhausting the default buffer
>>>> size for the dirty bitmap.
>>>>
>>>> There is no sensible way to set a sane limit, so just remove it
>>>> completely. The device node's usage is limited to root anyway, so there
>>>> is no additional DOS scenario added by allowing unlimited buffers.
>>>
>>> But is this setting of permissions what we want long term? What about a
>>> de-privileged qemu, which still needs to be able to issue at least dm-op
>>> hypercalls?
>>
>> Wouldn't that qemu have opened the node while still being privileged?
>
> Possibly, but how does this help? As soon as it's unprivileged it must not
> be able to hog resources anymore.
>
> Anyway, with Andrew's reply my point may be irrelevant, but I have to
> admit I'm not entirely sure.
I guess we want Xen tools to close /dev/xen/hypercall (or more precise:
don't dup2() it) when qemu is de-privileging itself. This will make it
very clear that it can't hog memory via mmap().
When you are fine with that I'll send a Xen patch for this.
Juergen
On Fri, Nov 02, 2018 at 06:16:13AM +0100, gregkh(a)linuxfoundation.org wrote:
>
> This is a note to let you know that I've just added the patch titled
>
> bridge: do not add port to router list when receives query with source 0.0.0.0
>
> to the 4.19-stable tree which can be found at:
> http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum…
>
> The filename of the patch is:
> bridge-do-not-add-port-to-router-list-when-receives-query-with-source-0.0.0.0.patch
> and it can be found in the queue-4.19 subdirectory.
>
> If you, or anyone else, feels it should not be added to the stable tree,
> please let <stable(a)vger.kernel.org> know about it.
Hi,
Patch
commit 0fe5119e267f3e3d8ac206895f5922195ec55a8a
Author: Nikolay Aleksandrov <nikolay(a)cumulusnetworks.com>
Date: Sat Oct 27 12:07:47 2018 +0300
net: bridge: remove ipv6 zero address check in mcast queries
is also needed to fix this patch.
Thanks
Hangbin
>
>
> From foo@baz Fri Nov 2 06:12:28 CET 2018
> From: Hangbin Liu <liuhangbin(a)gmail.com>
> Date: Fri, 26 Oct 2018 10:28:43 +0800
> Subject: bridge: do not add port to router list when receives query with source 0.0.0.0
>
> From: Hangbin Liu <liuhangbin(a)gmail.com>
>
> [ Upstream commit 5a2de63fd1a59c30c02526d427bc014b98adf508 ]
>
> Based on RFC 4541, 2.1.1. IGMP Forwarding Rules
>
> The switch supporting IGMP snooping must maintain a list of
> multicast routers and the ports on which they are attached. This
> list can be constructed in any combination of the following ways:
>
> a) This list should be built by the snooping switch sending
> Multicast Router Solicitation messages as described in IGMP
> Multicast Router Discovery [MRDISC]. It may also snoop
> Multicast Router Advertisement messages sent by and to other
> nodes.
>
> b) The arrival port for IGMP Queries (sent by multicast routers)
> where the source address is not 0.0.0.0.
>
> We should not add the port to router list when receives query with source
> 0.0.0.0.
>
> Reported-by: Ying Xu <yinxu(a)redhat.com>
> Signed-off-by: Hangbin Liu <liuhangbin(a)gmail.com>
> Acked-by: Nikolay Aleksandrov <nikolay(a)cumulusnetworks.com>
> Acked-by: Roopa Prabhu <roopa(a)cumulusnetworks.com>
> Signed-off-by: David S. Miller <davem(a)davemloft.net>
> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
> ---
> net/bridge/br_multicast.c | 10 +++++++++-
> 1 file changed, 9 insertions(+), 1 deletion(-)
>
> --- a/net/bridge/br_multicast.c
> +++ b/net/bridge/br_multicast.c
> @@ -1420,7 +1420,15 @@ static void br_multicast_query_received(
> return;
>
> br_multicast_update_query_timer(br, query, max_delay);
> - br_multicast_mark_router(br, port);
> +
> + /* Based on RFC4541, section 2.1.1 IGMP Forwarding Rules,
> + * the arrival port for IGMP Queries where the source address
> + * is 0.0.0.0 should not be added to router port list.
> + */
> + if ((saddr->proto == htons(ETH_P_IP) && saddr->u.ip4) ||
> + (saddr->proto == htons(ETH_P_IPV6) &&
> + !ipv6_addr_any(&saddr->u.ip6)))
> + br_multicast_mark_router(br, port);
> }
>
> static void br_ip4_multicast_query(struct net_bridge *br,
>
>
> Patches currently in stable-queue which might be from liuhangbin(a)gmail.com are
>
> queue-4.19/bridge-do-not-add-port-to-router-list-when-receives-query-with-source-0.0.0.0.patch
commit 0962590e553331db2cc0aef2dc35c57f6300dbbe upstream.
ALU operations on pointers such as scalar_reg += map_value_ptr are
handled in adjust_ptr_min_max_vals(). Problem is however that map_ptr
and range in the register state share a union, so transferring state
through dst_reg->range = ptr_reg->range is just buggy as any new
map_ptr in the dst_reg is then truncated (or null) for subsequent
checks. Fix this by adding a raw member and use it for copying state
over to dst_reg.
Fixes: f1174f77b50c ("bpf/verifier: rework value tracking")
Signed-off-by: Daniel Borkmann <daniel(a)iogearbox.net>
Cc: Edward Cree <ecree(a)solarflare.com>
Acked-by: Alexei Starovoitov <ast(a)kernel.org>
Signed-off-by: Alexei Starovoitov <ast(a)kernel.org>
Acked-by: Edward Cree <ecree(a)solarflare.com>
---
include/linux/bpf_verifier.h | 3 +++
kernel/bpf/verifier.c | 10 ++++++----
2 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h
index 73bec75..a333300 100644
--- a/include/linux/bpf_verifier.h
+++ b/include/linux/bpf_verifier.h
@@ -50,6 +50,9 @@ struct bpf_reg_state {
* PTR_TO_MAP_VALUE_OR_NULL
*/
struct bpf_map *map_ptr;
+
+ /* Max size from any of the above. */
+ unsigned long raw;
};
/* Fixed part of pointer offset, pointer types only */
s32 off;
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index a0ffc62..013b0cd 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -1935,7 +1935,7 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env,
dst_reg->umax_value = umax_ptr;
dst_reg->var_off = ptr_reg->var_off;
dst_reg->off = ptr_reg->off + smin_val;
- dst_reg->range = ptr_reg->range;
+ dst_reg->raw = ptr_reg->raw;
break;
}
/* A new variable offset is created. Note that off_reg->off
@@ -1965,10 +1965,11 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env,
}
dst_reg->var_off = tnum_add(ptr_reg->var_off, off_reg->var_off);
dst_reg->off = ptr_reg->off;
+ dst_reg->raw = ptr_reg->raw;
if (ptr_reg->type == PTR_TO_PACKET) {
dst_reg->id = ++env->id_gen;
/* something was added to pkt_ptr, set range to zero */
- dst_reg->range = 0;
+ dst_reg->raw = 0;
}
break;
case BPF_SUB:
@@ -1999,7 +2000,7 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env,
dst_reg->var_off = ptr_reg->var_off;
dst_reg->id = ptr_reg->id;
dst_reg->off = ptr_reg->off - smin_val;
- dst_reg->range = ptr_reg->range;
+ dst_reg->raw = ptr_reg->raw;
break;
}
/* A new variable offset is created. If the subtrahend is known
@@ -2025,11 +2026,12 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env,
}
dst_reg->var_off = tnum_sub(ptr_reg->var_off, off_reg->var_off);
dst_reg->off = ptr_reg->off;
+ dst_reg->raw = ptr_reg->raw;
if (ptr_reg->type == PTR_TO_PACKET) {
dst_reg->id = ++env->id_gen;
/* something was added to pkt_ptr, set range to zero */
if (smin_val < 0)
- dst_reg->range = 0;
+ dst_reg->raw = 0;
}
break;
case BPF_AND:
--
2.9.5
From: Ivan Khoronzhuk <ivan.khoronzhuk(a)linaro.org>
[ Upstream commit 9737cc99dd14b5b8b9d267618a6061feade8ea68 ]
After flushing all mcast entries from the table, the ones contained in
mc list of ndev are not restored when promisc mode is toggled off,
because they are considered as synched with ALE, thus, in order to
restore them after promisc mode - reset syncing info. This fix
touches only switch mode devices, including single port boards
like Beagle Bone.
Fixes: commit 5da1948969bc
("net: ethernet: ti: cpsw: fix lost of mcast packets while rx_mode update")
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk(a)linaro.org>
Reviewed-by: Grygorii Strashko <grygorii.strashko(a)ti.com>
Signed-off-by: David S. Miller <davem(a)davemloft.net>
Signed-off-by: Sasha Levin <sashal(a)kernel.org>
---
drivers/net/ethernet/ti/cpsw.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 8cb44eabc283..a44838aac97d 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -601,6 +601,7 @@ static void cpsw_set_promiscious(struct net_device *ndev, bool enable)
/* Clear all mcast from ALE */
cpsw_ale_flush_multicast(ale, ALE_ALL_PORTS, -1);
+ __dev_mc_unsync(ndev, NULL);
/* Flood All Unicast Packets to Host port */
cpsw_ale_control_set(ale, 0, ALE_P0_UNI_FLOOD, 1);
--
2.17.1
UBIFS's recovery code strictly assumes that a deleted inode will never
come back, therefore it removes all data which belongs to that inode
as soon it faces an inode with link count 0 in the replay list.
Before O_TMPFILE this assumption was perfectly fine. With O_TMPFILE
it can lead to data loss upon a power-cut.
Consider a journal with entries like:
0: inode X (nlink = 0) /* O_TMPFILE was created */
1: data for inode X /* Someone writes to the temp file */
2: inode X (nlink = 0) /* inode was changed, xattr, chmod, … */
3: inode X (nlink = 1) /* inode was re-linked via linkat() */
Upon replay of entry #2 UBIFS will drop all data that belongs to inode X,
this will lead to an empty file after mounting.
As solution for this problem, scan the replay list for a re-link entry
before dropping data.
Fixes: 474b93704f32 ("ubifs: Implement O_TMPFILE")
Cc: stable(a)vger.kernel.org
Reported-by: Russell Senior <russell(a)personaltelco.net>
Reported-by: Rafał Miłecki <zajec5(a)gmail.com>
Signed-off-by: Richard Weinberger <richard(a)nod.at>
---
Russel, Rafał,
please give this patch another testing.
I'll also run it on different test systems before merging.
Thanks,
//richard
---
fs/ubifs/replay.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/fs/ubifs/replay.c b/fs/ubifs/replay.c
index 4844538eb926..65a780685b82 100644
--- a/fs/ubifs/replay.c
+++ b/fs/ubifs/replay.c
@@ -209,6 +209,34 @@ static int trun_remove_range(struct ubifs_info *c, struct replay_entry *r)
return ubifs_tnc_remove_range(c, &min_key, &max_key);
}
+/**
+ * inode_relinked - check whether inode in question will be re-linked.
+ * @c: UBIFS file-system description object
+ * @rino: replay entry to test
+ *
+ * O_TMPFILE files can be re-linked, this means link count goes from 0 to 1.
+ * This case needs special care, otherwise all references to the inode will
+ * be removed upon the first replay entry of an inode with link count 0
+ * is found.
+ */
+static bool inode_relinked(struct ubifs_info *c, struct replay_entry *rino)
+{
+ struct replay_entry *r = rino;
+
+ ubifs_assert(c, rino->deletion);
+ ubifs_assert(c, key_type(c, &rino->key) == UBIFS_INO_KEY);
+
+ list_for_each_entry_from(r, &c->replay_list, list) {
+ if (key_inum(c, &r->key) == key_inum(c, &rino->key) &&
+ r->deletion == 0) {
+ ubifs_assert(c, r->sqnum > rino->sqnum);
+ return true;
+ }
+ }
+
+ return false;
+}
+
/**
* apply_replay_entry - apply a replay entry to the TNC.
* @c: UBIFS file-system description object
@@ -236,6 +264,11 @@ static int apply_replay_entry(struct ubifs_info *c, struct replay_entry *r)
{
ino_t inum = key_inum(c, &r->key);
+ if (inode_relinked(c, r)) {
+ err = 0;
+ break;
+ }
+
err = ubifs_tnc_remove_ino(c, inum);
break;
}
--
2.19.1
commit e259221763a40403d5bb232209998e8c45804ab8 ("fs: simplify the
generic_write_sync prototype") reworked callers of generic_write_sync(),
and ended up dropping the error return for the directio path. Prior to
that commit, in dio_complete(), an error would be bubbled up the stack,
but after that commit, errors passed on to dio_complete were eaten up.
This was reported on the list earlier, and a fix was proposed in
https://lore.kernel.org/lkml/20160921141539.GA17898@infradead.org/, but
never followed up with. We recently hit this bug in our testing where
fencing io errors, which were previously erroring out with EIO, were
being returned as success operations after this commit.
The fix proposed on the list earlier was a little short -- it would have
still called generic_write_sync() in case `ret` already contained an
error. This fix ensures generic_write_sync() is only called when
there's no pending error in the write.
CC: stable(a)vger.kernel.org
Reported-by: Ravi Nankani <rnankani(a)amazon.com>
Signed-off-by: Maximilian Heyne <mheyne(a)amazon.de>
Signed-off-by: Torsten Mehlan <tomeh(a)amazon.de>
Signed-off-by: Uwe Dannowski <uwed(a)amazon.de>
Signed-off-by: Amit Shah <aams(a)amazon.de>
Signed-off-by: David Woodhouse <dwmw(a)amazon.co.uk>
---
fs/direct-io.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/direct-io.c b/fs/direct-io.c
index 093fb54cd316..199146036093 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -325,8 +325,8 @@ static ssize_t dio_complete(struct dio *dio, ssize_t ret, unsigned int flags)
*/
dio->iocb->ki_pos += transferred;
- if (dio->op == REQ_OP_WRITE)
- ret = generic_write_sync(dio->iocb, transferred);
+ if (ret > 0 && dio->op == REQ_OP_WRITE)
+ ret = generic_write_sync(dio->iocb, ret);
dio->iocb->ki_complete(dio->iocb, ret, 0);
}
--
2.16.2
Amazon Development Center Germany GmbH
Berlin - Dresden - Aachen
main office: Krausenstr. 38, 10117 Berlin
Geschaeftsfuehrer: Dr. Ralf Herbrich, Christian Schlaeger
Ust-ID: DE289237879
Eingetragen am Amtsgericht Charlottenburg HRB 149173 B
PageTransCompoundMap() returns true for hugetlbfs and THP
hugepages. This behaviour incorrectly leads to stage 2 faults for
unsupported hugepage sizes (e.g., 64K hugepage with 4K pages) to be
treated as THP faults.
Tighten the check to filter out hugetlbfs pages. This also leads to
consistently mapping all unsupported hugepage sizes as PTE level
entries at stage 2.
Signed-off-by: Punit Agrawal <punit.agrawal(a)arm.com>
Reviewed-by: Suzuki Poulose <suzuki.poulose(a)arm.com>
Cc: Christoffer Dall <christoffer.dall(a)arm.com>
Cc: Marc Zyngier <marc.zyngier(a)arm.com>
Cc: stable(a)vger.kernel.org # v4.13+
---
virt/kvm/arm/mmu.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c
index 7e477b3cae5b..c23a1b323aad 100644
--- a/virt/kvm/arm/mmu.c
+++ b/virt/kvm/arm/mmu.c
@@ -1231,8 +1231,14 @@ static bool transparent_hugepage_adjust(kvm_pfn_t *pfnp, phys_addr_t *ipap)
{
kvm_pfn_t pfn = *pfnp;
gfn_t gfn = *ipap >> PAGE_SHIFT;
+ struct page *page = pfn_to_page(pfn);
- if (PageTransCompoundMap(pfn_to_page(pfn))) {
+ /*
+ * PageTransCompoungMap() returns true for THP and
+ * hugetlbfs. Make sure the adjustment is done only for THP
+ * pages.
+ */
+ if (!PageHuge(page) && PageTransCompoundMap(page)) {
unsigned long mask;
/*
* The address we faulted on is backed by a transparent huge
--
2.18.0
From: Waiman Long <longman(a)redhat.com>
[ Upstream commit 9506a7425b094d2f1d9c877ed5a78f416669269b ]
It was found that when debug_locks was turned off because of a problem
found by the lockdep code, the system performance could drop quite
significantly when the lock_stat code was also configured into the
kernel. For instance, parallel kernel build time on a 4-socket x86-64
server nearly doubled.
Further analysis into the cause of the slowdown traced back to the
frequent call to debug_locks_off() from the __lock_acquired() function
probably due to some inconsistent lockdep states with debug_locks
off. The debug_locks_off() function did an unconditional atomic xchg
to write a 0 value into debug_locks which had already been set to 0.
This led to severe cacheline contention in the cacheline that held
debug_locks. As debug_locks is being referenced in quite a few different
places in the kernel, this greatly slow down the system performance.
To prevent that trashing of debug_locks cacheline, lock_acquired()
and lock_contended() now checks the state of debug_locks before
proceeding. The debug_locks_off() function is also modified to check
debug_locks before calling __debug_locks_off().
Signed-off-by: Waiman Long <longman(a)redhat.com>
Cc: Andrew Morton <akpm(a)linux-foundation.org>
Cc: Linus Torvalds <torvalds(a)linux-foundation.org>
Cc: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz(a)infradead.org>
Cc: Thomas Gleixner <tglx(a)linutronix.de>
Cc: Will Deacon <will.deacon(a)arm.com>
Link: http://lkml.kernel.org/r/1539913518-15598-1-git-send-email-longman@redhat.c…
Signed-off-by: Ingo Molnar <mingo(a)kernel.org>
Signed-off-by: Sasha Levin <sashal(a)kernel.org>
---
kernel/locking/lockdep.c | 4 ++--
lib/debug_locks.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index f99008534275..fb90ca3a296e 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -3808,7 +3808,7 @@ void lock_contended(struct lockdep_map *lock, unsigned long ip)
{
unsigned long flags;
- if (unlikely(!lock_stat))
+ if (unlikely(!lock_stat || !debug_locks))
return;
if (unlikely(current->lockdep_recursion))
@@ -3828,7 +3828,7 @@ void lock_acquired(struct lockdep_map *lock, unsigned long ip)
{
unsigned long flags;
- if (unlikely(!lock_stat))
+ if (unlikely(!lock_stat || !debug_locks))
return;
if (unlikely(current->lockdep_recursion))
diff --git a/lib/debug_locks.c b/lib/debug_locks.c
index 96c4c633d95e..124fdf238b3d 100644
--- a/lib/debug_locks.c
+++ b/lib/debug_locks.c
@@ -37,7 +37,7 @@ EXPORT_SYMBOL_GPL(debug_locks_silent);
*/
int debug_locks_off(void)
{
- if (__debug_locks_off()) {
+ if (debug_locks && __debug_locks_off()) {
if (!debug_locks_silent) {
console_verbose();
return 1;
--
2.17.1
From: Masahisa Kojima <masahisa.kojima(a)linaro.org>
[ Upstream commit 8d5b0bf611ec5b7618d5b772dddc93b8afa78cb8 ]
We observed that packets and bytes count are not reset
when user performs interface down. Eventually, tx queue is
exhausted and packets will not be sent out.
To avoid this problem, resets tx queue in ndo_stop.
Fixes: 533dd11a12f6 ("net: socionext: Add Synquacer NetSec driver")
Signed-off-by: Masahisa Kojima <masahisa.kojima(a)linaro.org>
Signed-off-by: Yoshitoyo Osaki <osaki.yoshitoyo(a)socionext.com>
Signed-off-by: David S. Miller <davem(a)davemloft.net>
Signed-off-by: Sasha Levin <sashal(a)kernel.org>
---
drivers/net/ethernet/socionext/netsec.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c
index e080d3e7c582..4d7d53fbc0ef 100644
--- a/drivers/net/ethernet/socionext/netsec.c
+++ b/drivers/net/ethernet/socionext/netsec.c
@@ -945,6 +945,9 @@ static void netsec_uninit_pkt_dring(struct netsec_priv *priv, int id)
dring->head = 0;
dring->tail = 0;
dring->pkt_cnt = 0;
+
+ if (id == NETSEC_RING_TX)
+ netdev_reset_queue(priv->ndev);
}
static void netsec_free_dring(struct netsec_priv *priv, int id)
--
2.17.1
We need to make sure, that the carrier check polling is disabled
while suspending. Otherwise we can end up with usbnet_read_cmd()
being issued when only usbnet_read_cmd_nopm() is allowed. If this
happens, read operations lock up.
Fixes: d69d169493 ("usbnet: smsc95xx: fix link detection for disabled autonegotiation")
Cc: <stable(a)vger.kernel.org>
Signed-off-by: Frieder Schrempf <frieder.schrempf(a)kontron.de>
---
drivers/net/usb/smsc95xx.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 262e7a3..3bc9633 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -1592,6 +1592,8 @@ static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
u32 val, link_up;
int ret;
+ cancel_delayed_work_sync(&pdata->carrier_check);
+
ret = usbnet_suspend(intf, message);
if (ret < 0) {
netdev_warn(dev->net, "usbnet_suspend error\n");
@@ -1840,6 +1842,11 @@ static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
*/
if (ret && PMSG_IS_AUTO(message))
usbnet_resume(intf);
+
+ if (ret)
+ schedule_delayed_work(&pdata->carrier_check,
+ CARRIER_CHECK_DELAY);
+
return ret;
}
--
2.7.4
Dear Friend,
My name is Mr. Edward Yuan, a consultant/broker. I know you might be a bit apprehensive because you do not know me. Nevertheless, I have a proposal on behalf of a client, a lucrative business that might be of mutual benefit to you.
If interested in this proposition please kindly and urgently contact me for more details.
Best Regards.
Mr. Edward Yuan.
---
This email has been checked for viruses by AVG.
https://www.avg.com
The patch titled
Subject: memory_hotplug: cond_resched in __remove_pages
has been added to the -mm tree. Its filename is
memory_hotplug-cond_resched-in-__remove_pages.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/memory_hotplug-cond_resched-in-__r…
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/memory_hotplug-cond_resched-in-__r…
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Michal Hocko <mhocko(a)suse.com>
Subject: memory_hotplug: cond_resched in __remove_pages
We have received a bug report that unbinding a large pmem (>1TB) can
result in a soft lockup:
[ 380.339203] NMI watchdog: BUG: soft lockup - CPU#9 stuck for 23s! [ndctl:4365]
[...]
[ 380.339316] Supported: Yes
[ 380.339318] CPU: 9 PID: 4365 Comm: ndctl Not tainted 4.12.14-94.40-default #1 SLE12-SP4
[ 380.339318] Hardware name: Intel Corporation S2600WFD/S2600WFD, BIOS SE5C620.86B.01.00.0833.051120182255 05/11/2018
[ 380.339319] task: ffff9cce7d4410c0 task.stack: ffffbe9eb1bc4000
[ 380.339325] RIP: 0010:__put_page+0x62/0x80
[ 380.339326] RSP: 0018:ffffbe9eb1bc7d30 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
[ 380.339327] RAX: 000040540081c0d3 RBX: ffffeb8f03557200 RCX: 000063af40000000
[ 380.339328] RDX: 0000000000000002 RSI: ffff9cce75bff498 RDI: ffff9e4a76072ff8
[ 380.339329] RBP: 0000000a43557200 R08: 0000000000000000 R09: ffffbe9eb1bc7bb0
[ 380.339329] R10: ffffbe9eb1bc7d08 R11: 0000000000000000 R12: ffff9e194a22a0e0
[ 380.339330] R13: ffff9cce7062fc10 R14: ffff9e194a22a0a0 R15: ffff9cce6559c0e0
[ 380.339331] FS: 00007fd132368880(0000) GS:ffff9cce7ea40000(0000) knlGS:0000000000000000
[ 380.339332] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 380.339332] CR2: 00000000020820a0 CR3: 000000017ef7a003 CR4: 00000000007606e0
[ 380.339333] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 380.339334] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 380.339334] PKRU: 55555554
[ 380.339334] Call Trace:
[ 380.339338] devm_memremap_pages_release+0x152/0x260
[ 380.339342] release_nodes+0x18d/0x1d0
[ 380.339347] device_release_driver_internal+0x160/0x210
[ 380.339350] unbind_store+0xb3/0xe0
[ 380.339355] kernfs_fop_write+0x102/0x180
[ 380.339358] __vfs_write+0x26/0x150
[ 380.339363] ? security_file_permission+0x3c/0xc0
[ 380.339364] vfs_write+0xad/0x1a0
[ 380.339366] SyS_write+0x42/0x90
[ 380.339370] do_syscall_64+0x74/0x150
[ 380.339375] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 380.339377] RIP: 0033:0x7fd13166b3d0
It has been reported on an older (4.12) kernel but the current upstream
code doesn't cond_resched in the hot remove code at all and the given
range to remove might be really large. Fix the issue by calling
cond_resched once per memory section.
Link: http://lkml.kernel.org/r/20181031125840.23982-1-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko(a)suse.com>
Acked-by: Johannes Thumshirn <jthumshirn(a)suse.de>
Cc: Dan Williams <dan.j.williams(a)gmail.com>
Cc: <stable(a)vger.kernel.org>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
---
mm/memory_hotplug.c | 1 +
1 file changed, 1 insertion(+)
--- a/mm/memory_hotplug.c~memory_hotplug-cond_resched-in-__remove_pages
+++ a/mm/memory_hotplug.c
@@ -586,6 +586,7 @@ int __remove_pages(struct zone *zone, un
for (i = 0; i < sections_to_remove; i++) {
unsigned long pfn = phys_start_pfn + i*PAGES_PER_SECTION;
+ cond_resched();
ret = __remove_section(zone, __pfn_to_section(pfn), map_offset,
altmap);
map_offset = 0;
_
Patches currently in -mm which might be from mhocko(a)suse.com are
memory_hotplug-cond_resched-in-__remove_pages.patch
mm-thp-consolidate-thp-gfp-handling-into-alloc_hugepage_direct_gfpmask.patch
The patch titled
Subject: kbuild: fix kernel/bounds.c 'W=1' warning
has been removed from the -mm tree. Its filename was
kbuild-fix-kernel-boundsc-w=1-warning.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Arnd Bergmann <arnd(a)arndb.de>
Subject: kbuild: fix kernel/bounds.c 'W=1' warning
Building any configuration with 'make W=1' produces a warning:
kernel/bounds.c:16:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes]
When also passing -Werror, this prevents us from building any other files.
Nobody ever calls the function, but we can't make it 'static' either
since we want the compiler output.
Calling it 'main' instead however avoids the warning, because gcc
does not insist on having a declaration for main.
Link: http://lkml.kernel.org/r/20181005083313.2088252-1-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd(a)arndb.de>
Reported-by: Kieran Bingham <kieran.bingham+renesas(a)ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas(a)ideasonboard.com>
Cc: David Laight <David.Laight(a)ACULAB.COM>
Cc: Masahiro Yamada <yamada.masahiro(a)socionext.com>
Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
Cc: <stable(a)vger.kernel.org>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
---
kernel/bounds.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/kernel/bounds.c~kbuild-fix-kernel-boundsc-w=1-warning
+++ a/kernel/bounds.c
@@ -13,7 +13,7 @@
#include <linux/log2.h>
#include <linux/spinlock_types.h>
-void foo(void)
+int main(void)
{
/* The enum constants to put into include/generated/bounds.h */
DEFINE(NR_PAGEFLAGS, __NR_PAGEFLAGS);
@@ -23,4 +23,6 @@ void foo(void)
#endif
DEFINE(SPINLOCK_SIZE, sizeof(spinlock_t));
/* End of constants */
+
+ return 0;
}
_
Patches currently in -mm which might be from arnd(a)arndb.de are
ocfs2-dlmglue-clean-up-timestamp-handling.patch
vfs-replace-current_kernel_time64-with-ktime-equivalent.patch
The patch titled
Subject: mm/hmm: fix race between hmm_mirror_unregister() and mmu_notifier callback
has been removed from the -mm tree. Its filename was
mm-hmm-fix-race-between-hmm_mirror_unregister-and-mmu_notifier-callback.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Ralph Campbell <rcampbell(a)nvidia.com>
Subject: mm/hmm: fix race between hmm_mirror_unregister() and mmu_notifier callback
In hmm_mirror_unregister(), mm->hmm is set to NULL and then
mmu_notifier_unregister_no_release() is called. That creates a small
window where mmu_notifier can call mmu_notifier_ops with mm->hmm equal to
NULL. Fix this by first unregistering mmu notifier callbacks and then
setting mm->hmm to NULL.
Similarly in hmm_register(), set mm->hmm before registering mmu_notifier
callbacks so callback functions always see mm->hmm set.
Link: http://lkml.kernel.org/r/20181019160442.18723-4-jglisse@redhat.com
Signed-off-by: Ralph Campbell <rcampbell(a)nvidia.com>
Signed-off-by: Jérôme Glisse <jglisse(a)redhat.com>
Reviewed-by: John Hubbard <jhubbard(a)nvidia.com>
Reviewed-by: Jérôme Glisse <jglisse(a)redhat.com>
Reviewed-by: Balbir Singh <bsingharora(a)gmail.com>
Cc: <stable(a)vger.kernel.org>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
---
mm/hmm.c | 36 +++++++++++++++++++++---------------
1 file changed, 21 insertions(+), 15 deletions(-)
--- a/mm/hmm.c~mm-hmm-fix-race-between-hmm_mirror_unregister-and-mmu_notifier-callback
+++ a/mm/hmm.c
@@ -91,16 +91,6 @@ static struct hmm *hmm_register(struct m
spin_lock_init(&hmm->lock);
hmm->mm = mm;
- /*
- * We should only get here if hold the mmap_sem in write mode ie on
- * registration of first mirror through hmm_mirror_register()
- */
- hmm->mmu_notifier.ops = &hmm_mmu_notifier_ops;
- if (__mmu_notifier_register(&hmm->mmu_notifier, mm)) {
- kfree(hmm);
- return NULL;
- }
-
spin_lock(&mm->page_table_lock);
if (!mm->hmm)
mm->hmm = hmm;
@@ -108,12 +98,27 @@ static struct hmm *hmm_register(struct m
cleanup = true;
spin_unlock(&mm->page_table_lock);
- if (cleanup) {
- mmu_notifier_unregister(&hmm->mmu_notifier, mm);
- kfree(hmm);
- }
+ if (cleanup)
+ goto error;
+
+ /*
+ * We should only get here if hold the mmap_sem in write mode ie on
+ * registration of first mirror through hmm_mirror_register()
+ */
+ hmm->mmu_notifier.ops = &hmm_mmu_notifier_ops;
+ if (__mmu_notifier_register(&hmm->mmu_notifier, mm))
+ goto error_mm;
return mm->hmm;
+
+error_mm:
+ spin_lock(&mm->page_table_lock);
+ if (mm->hmm == hmm)
+ mm->hmm = NULL;
+ spin_unlock(&mm->page_table_lock);
+error:
+ kfree(hmm);
+ return NULL;
}
void hmm_mm_destroy(struct mm_struct *mm)
@@ -278,12 +283,13 @@ void hmm_mirror_unregister(struct hmm_mi
if (!should_unregister || mm == NULL)
return;
+ mmu_notifier_unregister_no_release(&hmm->mmu_notifier, mm);
+
spin_lock(&mm->page_table_lock);
if (mm->hmm == hmm)
mm->hmm = NULL;
spin_unlock(&mm->page_table_lock);
- mmu_notifier_unregister_no_release(&hmm->mmu_notifier, mm);
kfree(hmm);
}
EXPORT_SYMBOL(hmm_mirror_unregister);
_
Patches currently in -mm which might be from rcampbell(a)nvidia.com are
The patch titled
Subject: mm/rmap: map_pte() was not handling private ZONE_DEVICE page properly
has been removed from the -mm tree. Its filename was
mm-rmap-map_pte-was-not-handling-private-zone_device-page-properly-v3.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Ralph Campbell <rcampbell(a)nvidia.com>
Subject: mm/rmap: map_pte() was not handling private ZONE_DEVICE page properly
Private ZONE_DEVICE pages use a special pte entry and thus are not
present. Properly handle this case in map_pte(), it is already handled in
check_pte(), the map_pte() part was lost in some rebase most probably.
Without this patch the slow migration path can not migrate back to any
private ZONE_DEVICE memory to regular memory. This was found after stress
testing migration back to system memory. This ultimatly can lead to the
CPU constantly page fault looping on the special swap entry.
Link: http://lkml.kernel.org/r/20181019160442.18723-3-jglisse@redhat.com
Signed-off-by: Ralph Campbell <rcampbell(a)nvidia.com>
Signed-off-by: Jérôme Glisse <jglisse(a)redhat.com>
Reviewed-by: Balbir Singh <bsingharora(a)gmail.com>
Cc: Andrew Morton <akpm(a)linux-foundation.org>
Cc: Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com>
Cc: <stable(a)vger.kernel.org>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
---
mm/page_vma_mapped.c | 24 +++++++++++++++++++++++-
1 file changed, 23 insertions(+), 1 deletion(-)
--- a/mm/page_vma_mapped.c~mm-rmap-map_pte-was-not-handling-private-zone_device-page-properly-v3
+++ a/mm/page_vma_mapped.c
@@ -21,7 +21,29 @@ static bool map_pte(struct page_vma_mapp
if (!is_swap_pte(*pvmw->pte))
return false;
} else {
- if (!pte_present(*pvmw->pte))
+ /*
+ * We get here when we are trying to unmap a private
+ * device page from the process address space. Such
+ * page is not CPU accessible and thus is mapped as
+ * a special swap entry, nonetheless it still does
+ * count as a valid regular mapping for the page (and
+ * is accounted as such in page maps count).
+ *
+ * So handle this special case as if it was a normal
+ * page mapping ie lock CPU page table and returns
+ * true.
+ *
+ * For more details on device private memory see HMM
+ * (include/linux/hmm.h or mm/hmm.c).
+ */
+ if (is_swap_pte(*pvmw->pte)) {
+ swp_entry_t entry;
+
+ /* Handle un-addressable ZONE_DEVICE memory */
+ entry = pte_to_swp_entry(*pvmw->pte);
+ if (!is_device_private_entry(entry))
+ return false;
+ } else if (!pte_present(*pvmw->pte))
return false;
}
}
_
Patches currently in -mm which might be from rcampbell(a)nvidia.com are