From: Heyi Guo guoheyi@huawei.com
[ Upstream commit a050fa5476d418fc16b25abe168b3d38ba11e13c ]
When we run several VMs with PCI passthrough and GICv4 enabled, not pinning vCPUs, we will occasionally see below warnings in dmesg:
ITS queue timeout (65440 65504 480) ITS cmd its_build_vmovp_cmd failed
The reason for the above issue is that in BUILD_SINGLE_CMD_FUNC: 1. Post the write command. 2. Release the lock. 3. Start to read GITS_CREADR to get the reader pointer. 4. Compare the reader pointer to the target pointer. 5. If reader pointer does not reach the target, sleep 1us and continue to try.
If we have several processors running the above concurrently, other CPUs will post write commands while the 1st CPU is waiting the completion. So we may have below issue:
phase 1: ---rd_idx-----from_idx-----to_idx--0---------
wait 1us:
phase 2: --------------from_idx-----to_idx--0-rd_idx--
That is the rd_idx may fly ahead of to_idx, and if in case to_idx is near the wrap point, rd_idx will wrap around. So the below condition will not be met even after 1s:
if (from_idx < to_idx && rd_idx >= to_idx)
There is another theoretical issue. For a slow and busy ITS, the initial rd_idx may fall behind from_idx a lot, just as below:
---rd_idx---0--from_idx-----to_idx-----------
This will cause the wait function exit too early.
Actually, it does not make much sense to use from_idx to judge if to_idx is wrapped, but we need a initial rd_idx when lock is still acquired, and it can be used to judge whether to_idx is wrapped and the current rd_idx is wrapped.
We switch to a method of calculating the delta of two adjacent reads and accumulating it to get the sum, so that we can get the real rd_idx from the wrapped value even when the queue is almost full.
Cc: Thomas Gleixner tglx@linutronix.de Cc: Jason Cooper jason@lakedaemon.net Signed-off-by: Heyi Guo guoheyi@huawei.com Signed-off-by: Marc Zyngier marc.zyngier@arm.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/irqchip/irq-gic-v3-its.c | 35 ++++++++++++++++++++++---------- 1 file changed, 24 insertions(+), 11 deletions(-)
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 65ab2c80529c..ee30e8965d1b 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -740,32 +740,43 @@ static void its_flush_cmd(struct its_node *its, struct its_cmd_block *cmd) }
static int its_wait_for_range_completion(struct its_node *its, - struct its_cmd_block *from, + u64 prev_idx, struct its_cmd_block *to) { - u64 rd_idx, from_idx, to_idx; + u64 rd_idx, to_idx, linear_idx; u32 count = 1000000; /* 1s! */
- from_idx = its_cmd_ptr_to_offset(its, from); + /* Linearize to_idx if the command set has wrapped around */ to_idx = its_cmd_ptr_to_offset(its, to); + if (to_idx < prev_idx) + to_idx += ITS_CMD_QUEUE_SZ; + + linear_idx = prev_idx;
while (1) { + s64 delta; + rd_idx = readl_relaxed(its->base + GITS_CREADR);
- /* Direct case */ - if (from_idx < to_idx && rd_idx >= to_idx) - break; + /* + * Compute the read pointer progress, taking the + * potential wrap-around into account. + */ + delta = rd_idx - prev_idx; + if (rd_idx < prev_idx) + delta += ITS_CMD_QUEUE_SZ;
- /* Wrapped case */ - if (from_idx >= to_idx && rd_idx >= to_idx && rd_idx < from_idx) + linear_idx += delta; + if (linear_idx >= to_idx) break;
count--; if (!count) { - pr_err_ratelimited("ITS queue timeout (%llu %llu %llu)\n", - from_idx, to_idx, rd_idx); + pr_err_ratelimited("ITS queue timeout (%llu %llu)\n", + to_idx, linear_idx); return -1; } + prev_idx = rd_idx; cpu_relax(); udelay(1); } @@ -782,6 +793,7 @@ void name(struct its_node *its, \ struct its_cmd_block *cmd, *sync_cmd, *next_cmd; \ synctype *sync_obj; \ unsigned long flags; \ + u64 rd_idx; \ \ raw_spin_lock_irqsave(&its->lock, flags); \ \ @@ -803,10 +815,11 @@ void name(struct its_node *its, \ } \ \ post: \ + rd_idx = readl_relaxed(its->base + GITS_CREADR); \ next_cmd = its_post_commands(its); \ raw_spin_unlock_irqrestore(&its->lock, flags); \ \ - if (its_wait_for_range_completion(its, cmd, next_cmd)) \ + if (its_wait_for_range_completion(its, rd_idx, next_cmd)) \ pr_err_ratelimited("ITS cmd %ps failed\n", builder); \ }
From: Tony Lindgren tony@atomide.com
[ Upstream commit 41b3588dba6ef4b7995735a97e47ff0aeea6c276 ]
If we do a clk_get() for a clock that does not exists, we have _ti_omap4_clkctrl_xlate() return uninitialized data if no match is found. This can be seen in some cases with SLAB_DEBUG enabled:
Unable to handle kernel paging request at virtual address 5a5a5a5a ... clk_hw_create_clk.part.33 sysc_notifier_call notifier_call_chain blocking_notifier_call_chain device_add
Let's fix this by setting a found flag only when we find a match.
Reported-by: Tomi Valkeinen tomi.valkeinen@ti.com Fixes: 88a172526c32 ("clk: ti: add support for clkctrl clocks") Signed-off-by: Tony Lindgren tony@atomide.com Tested-by: Peter Ujfalusi peter.ujfalusi@ti.com Tested-by: Tomi Valkeinen tomi.valkeinen@ti.com Signed-off-by: Stephen Boyd sboyd@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/ti/clkctrl.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/ti/clkctrl.c b/drivers/clk/ti/clkctrl.c index ca3218337fd7..dfaa5aad0692 100644 --- a/drivers/clk/ti/clkctrl.c +++ b/drivers/clk/ti/clkctrl.c @@ -229,6 +229,7 @@ static struct clk_hw *_ti_omap4_clkctrl_xlate(struct of_phandle_args *clkspec, { struct omap_clkctrl_provider *provider = data; struct omap_clkctrl_clk *entry; + bool found = false;
if (clkspec->args_count != 2) return ERR_PTR(-EINVAL); @@ -238,11 +239,13 @@ static struct clk_hw *_ti_omap4_clkctrl_xlate(struct of_phandle_args *clkspec,
list_for_each_entry(entry, &provider->clocks, node) { if (entry->reg_offset == clkspec->args[0] && - entry->bit_offset == clkspec->args[1]) + entry->bit_offset == clkspec->args[1]) { + found = true; break; + } }
- if (!entry) + if (!found) return ERR_PTR(-EINVAL);
return entry->clk;
From: Hans de Goede hdegoede@redhat.com
[ Upstream commit a483fcab38b43fb34a7f12ab1daadd3907f150e2 ]
Starting with ACPI 6.2 bits 1 and 2 of the BGRT status field are no longer reserved. These bits are now used to indicate if the image needs to be rotated before being displayed.
The first device using these bits has now shown up (the GPD MicroPC) and the reserved bits check causes us to reject the valid BGRT table on this device.
Rather then changing the reserved bits check, allowing only the 2 new bits, instead just completely remove it so that we do not end up with a similar problem when more bits are added in the future.
Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Ard Biesheuvel ard.biesheuvel@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/firmware/efi/efi-bgrt.c | 5 ----- 1 file changed, 5 deletions(-)
diff --git a/drivers/firmware/efi/efi-bgrt.c b/drivers/firmware/efi/efi-bgrt.c index b22ccfb0c991..2bf4d31f4967 100644 --- a/drivers/firmware/efi/efi-bgrt.c +++ b/drivers/firmware/efi/efi-bgrt.c @@ -50,11 +50,6 @@ void __init efi_bgrt_init(struct acpi_table_header *table) bgrt->version); goto out; } - if (bgrt->status & 0xfe) { - pr_notice("Ignoring BGRT: reserved status bits are non-zero %u\n", - bgrt->status); - goto out; - } if (bgrt->image_type != 0) { pr_notice("Ignoring BGRT: invalid image type %u (expected 0)\n", bgrt->image_type);
From: Peter Zijlstra peterz@infradead.org
[ Upstream commit 085ebfe937d7a7a5df1729f35a12d6d655fea68c ]
perf_sample_regs_user() uses 'current->mm' to test for the presence of userspace, but this is insufficient, consider use_mm().
A better test is: '!(current->flags & PF_KTHREAD)', exec() clears PF_KTHREAD after it sets the new ->mm but before it drops to userspace for the first time.
Possibly obsoletes: bf05fc25f268 ("powerpc/perf: Fix oops when kthread execs user process")
Reported-by: Ravi Bangoria ravi.bangoria@linux.vnet.ibm.com Reported-by: Young Xiao 92siuyang@gmail.com Signed-off-by: Peter Zijlstra (Intel) peterz@infradead.org Acked-by: Will Deacon will.deacon@arm.com Cc: Arnaldo Carvalho de Melo acme@redhat.com Cc: Frederic Weisbecker fweisbec@gmail.com Cc: Jiri Olsa jolsa@redhat.com Cc: Linus Torvalds torvalds@linux-foundation.org Cc: Michael Ellerman mpe@ellerman.id.au Cc: Naveen N. Rao naveen.n.rao@linux.vnet.ibm.com Cc: Peter Zijlstra peterz@infradead.org Cc: Stephane Eranian eranian@google.com Cc: Thomas Gleixner tglx@linutronix.de Fixes: 4018994f3d87 ("perf: Add ability to attach user level registers dump to sample") Signed-off-by: Ingo Molnar mingo@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- kernel/events/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/events/core.c b/kernel/events/core.c index 171b83ebed4a..3b61ff40bfe2 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -5906,7 +5906,7 @@ static void perf_sample_regs_user(struct perf_regs *regs_user, if (user_mode(regs)) { regs_user->abi = perf_reg_abi(current); regs_user->regs = regs; - } else if (current->mm) { + } else if (!(current->flags & PF_KTHREAD)) { perf_get_regs_user(regs_user, regs, regs_user_copy); } else { regs_user->abi = PERF_SAMPLE_REGS_ABI_NONE;
From: Linus Walleij linus.walleij@linaro.org
[ Upstream commit 36558020128b1a48b7bddd5792ee70e3f64b04b0 ]
It's a simple typo in the DNS file, which was pretty serious. No scripts were working properly. Fix it up.
Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/boot/dts/gemini-dlink-dns-313.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/gemini-dlink-dns-313.dts b/arch/arm/boot/dts/gemini-dlink-dns-313.dts index d1329322b968..361dccd6c7ee 100644 --- a/arch/arm/boot/dts/gemini-dlink-dns-313.dts +++ b/arch/arm/boot/dts/gemini-dlink-dns-313.dts @@ -11,7 +11,7 @@
/ { model = "D-Link DNS-313 1-Bay Network Storage Enclosure"; - compatible = "dlink,dir-313", "cortina,gemini"; + compatible = "dlink,dns-313", "cortina,gemini"; #address-cells = <1>; #size-cells = <1>;
From: Arnd Bergmann arnd@arndb.de
[ Upstream commit 27e23d8975270df6999f8b5b3156fc0c04927451 ]
omap3xxx_prm_enable_io_wakeup() is marked __init, but its caller is not, so we get a warning with clang-8:
WARNING: vmlinux.o(.text+0x343c8): Section mismatch in reference from the function omap3xxx_prm_late_init() to the function .init.text:omap3xxx_prm_enable_io_wakeup() The function omap3xxx_prm_late_init() references the function __init omap3xxx_prm_enable_io_wakeup(). This is often because omap3xxx_prm_late_init lacks a __init annotation or the annotation of omap3xxx_prm_enable_io_wakeup is wrong.
When building with gcc, omap3xxx_prm_enable_io_wakeup() is always inlined, so we never noticed in the past.
Signed-off-by: Arnd Bergmann arnd@arndb.de Reviewed-by: Nathan Chancellor natechancellor@gmail.com Acked-by: Tony Lindgren tony@atomide.com Reviewed-by: Andrew Murray andrew.murray@arm.com Signed-off-by: Olof Johansson olof@lixom.net Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/mach-omap2/prm3xxx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/mach-omap2/prm3xxx.c b/arch/arm/mach-omap2/prm3xxx.c index 05858f966f7d..dfa65fc2c82b 100644 --- a/arch/arm/mach-omap2/prm3xxx.c +++ b/arch/arm/mach-omap2/prm3xxx.c @@ -433,7 +433,7 @@ static void omap3_prm_reconfigure_io_chain(void) * registers, and omap3xxx_prm_reconfigure_io_chain() must be called. * No return value. */ -static void __init omap3xxx_prm_enable_io_wakeup(void) +static void omap3xxx_prm_enable_io_wakeup(void) { if (prm_features & PRM_HAS_IO_WAKEUP) omap2_prm_set_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD,
From: David Howells dhowells@redhat.com
[ Upstream commit 90fa9b64523a645a97edc0bdcf2d74759957eeee ]
Fix the cb_break_lock spinlock in afs_volume struct by initialising it when the volume record is allocated.
Also rename the lock to cb_v_break_lock to distinguish it from the lock of the same name in the afs_server struct.
Without this, the following trace may be observed when a volume-break callback is received:
INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 2 PID: 50 Comm: kworker/2:1 Not tainted 5.2.0-rc1-fscache+ #3045 Hardware name: ASUS All Series/H97-PLUS, BIOS 2306 10/09/2014 Workqueue: afs SRXAFSCB_CallBack Call Trace: dump_stack+0x67/0x8e register_lock_class+0x23b/0x421 ? check_usage_forwards+0x13c/0x13c __lock_acquire+0x89/0xf73 lock_acquire+0x13b/0x166 ? afs_break_callbacks+0x1b2/0x3dd _raw_write_lock+0x2c/0x36 ? afs_break_callbacks+0x1b2/0x3dd afs_break_callbacks+0x1b2/0x3dd ? trace_event_raw_event_afs_server+0x61/0xac SRXAFSCB_CallBack+0x11f/0x16c process_one_work+0x2c5/0x4ee ? worker_thread+0x234/0x2ac worker_thread+0x1d8/0x2ac ? cancel_delayed_work_sync+0xf/0xf kthread+0x11f/0x127 ? kthread_park+0x76/0x76 ret_from_fork+0x24/0x30
Fixes: 68251f0a6818 ("afs: Fix whole-volume callback handling") Signed-off-by: David Howells dhowells@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/afs/callback.c | 4 ++-- fs/afs/internal.h | 2 +- fs/afs/volume.c | 1 + 3 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/fs/afs/callback.c b/fs/afs/callback.c index 5f261fbf2182..4ad701250299 100644 --- a/fs/afs/callback.c +++ b/fs/afs/callback.c @@ -276,9 +276,9 @@ static void afs_break_one_callback(struct afs_server *server, struct afs_super_info *as = AFS_FS_S(cbi->sb); struct afs_volume *volume = as->volume;
- write_lock(&volume->cb_break_lock); + write_lock(&volume->cb_v_break_lock); volume->cb_v_break++; - write_unlock(&volume->cb_break_lock); + write_unlock(&volume->cb_v_break_lock); } else { data.volume = NULL; data.fid = *fid; diff --git a/fs/afs/internal.h b/fs/afs/internal.h index 34c02fdcc25f..aea19614c082 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -477,7 +477,7 @@ struct afs_volume { unsigned int servers_seq; /* Incremented each time ->servers changes */
unsigned cb_v_break; /* Break-everything counter. */ - rwlock_t cb_break_lock; + rwlock_t cb_v_break_lock;
afs_voltype_t type; /* type of volume */ short error; diff --git a/fs/afs/volume.c b/fs/afs/volume.c index 3037bd01f617..5ec186ec5651 100644 --- a/fs/afs/volume.c +++ b/fs/afs/volume.c @@ -47,6 +47,7 @@ static struct afs_volume *afs_alloc_volume(struct afs_mount_params *params, atomic_set(&volume->usage, 1); INIT_LIST_HEAD(&volume->proc_link); rwlock_init(&volume->servers_lock); + rwlock_init(&volume->cb_v_break_lock); memcpy(volume->name, vldb->name, vldb->name_len + 1);
slist = afs_alloc_server_list(params->cell, params->key, vldb, type_mask);
From: Colin Ian King colin.king@canonical.com
[ Upstream commit ea136a112d89bade596314a1ae49f748902f4727 ]
The left shift of unsigned int cpu_khz will overflow for large values of cpu_khz, so cast it to a long long before shifting it to avoid overvlow. For example, this can happen when cpu_khz is 4194305, i.e. ~4.2 GHz.
Addresses-Coverity: ("Unintentional integer overflow") Fixes: 8c3ba8d04924 ("x86, apic: ack all pending irqs when crashed/on kexec") Signed-off-by: Colin Ian King colin.king@canonical.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Cc: Borislav Petkov bp@alien8.de Cc: "H . Peter Anvin" hpa@zytor.com Cc: kernel-janitors@vger.kernel.org Link: https://lkml.kernel.org/r/20190619181446.13635-1-colin.king@canonical.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/x86/kernel/apic/apic.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 84132eddb5a8..2646234380cc 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1452,7 +1452,8 @@ static void apic_pending_intr_clear(void) if (queued) { if (boot_cpu_has(X86_FEATURE_TSC) && cpu_khz) { ntsc = rdtsc(); - max_loops = (cpu_khz << 10) - (ntsc - tsc); + max_loops = (long long)cpu_khz << 10; + max_loops -= ntsc - tsc; } else { max_loops--; }
From: Petr Oros poros@redhat.com
[ Upstream commit 2e5db6eb3c23e5dc8171eb8f6af7a97ef9fcf3a9 ]
Certain cards in conjunction with certain switches need a little more time for link setup that results in ethtool link test failure after offline test. Patch adds a loop that waits for a link setup finish.
Changes in v2: - added fixes header
Fixes: 4276e47e2d1c ("be2net: Add link test to list of ethtool self tests.") Signed-off-by: Petr Oros poros@redhat.com Reviewed-by: Ivan Vecera ivecera@redhat.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/ethernet/emulex/benet/be_ethtool.c | 28 +++++++++++++++---- 1 file changed, 22 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/emulex/benet/be_ethtool.c b/drivers/net/ethernet/emulex/benet/be_ethtool.c index bfb16a474490..d1905d50c26c 100644 --- a/drivers/net/ethernet/emulex/benet/be_ethtool.c +++ b/drivers/net/ethernet/emulex/benet/be_ethtool.c @@ -895,7 +895,7 @@ static void be_self_test(struct net_device *netdev, struct ethtool_test *test, u64 *data) { struct be_adapter *adapter = netdev_priv(netdev); - int status; + int status, cnt; u8 link_status = 0;
if (adapter->function_caps & BE_FUNCTION_CAPS_SUPER_NIC) { @@ -906,6 +906,9 @@ static void be_self_test(struct net_device *netdev, struct ethtool_test *test,
memset(data, 0, sizeof(u64) * ETHTOOL_TESTS_NUM);
+ /* check link status before offline tests */ + link_status = netif_carrier_ok(netdev); + if (test->flags & ETH_TEST_FL_OFFLINE) { if (be_loopback_test(adapter, BE_MAC_LOOPBACK, &data[0]) != 0) test->flags |= ETH_TEST_FL_FAILED; @@ -926,13 +929,26 @@ static void be_self_test(struct net_device *netdev, struct ethtool_test *test, test->flags |= ETH_TEST_FL_FAILED; }
- status = be_cmd_link_status_query(adapter, NULL, &link_status, 0); - if (status) { - test->flags |= ETH_TEST_FL_FAILED; - data[4] = -1; - } else if (!link_status) { + /* link status was down prior to test */ + if (!link_status) { test->flags |= ETH_TEST_FL_FAILED; data[4] = 1; + return; + } + + for (cnt = 10; cnt; cnt--) { + status = be_cmd_link_status_query(adapter, NULL, &link_status, + 0); + if (status) { + test->flags |= ETH_TEST_FL_FAILED; + data[4] = -1; + break; + } + + if (link_status) + break; + + msleep_interruptible(500); } }
From: Takashi Iwai tiwai@suse.de
[ Upstream commit aad1dcc4f011ea409850e040363dff1e59aa4175 ]
The arc4 crypto is mandatory at ppp_mppe probe time, so let's put a softdep line, so that the corresponding module gets prepared gracefully. Without this, a simple inclusion to initrd via dracut failed due to the missing dependency, for example.
Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ppp/ppp_mppe.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/net/ppp/ppp_mppe.c b/drivers/net/ppp/ppp_mppe.c index a205750b431b..8609c1a0777b 100644 --- a/drivers/net/ppp/ppp_mppe.c +++ b/drivers/net/ppp/ppp_mppe.c @@ -63,6 +63,7 @@ MODULE_AUTHOR("Frank Cusack fcusack@fcusack.com"); MODULE_DESCRIPTION("Point-to-Point Protocol Microsoft Point-to-Point Encryption support"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_ALIAS("ppp-compress-" __stringify(CI_MPPE)); +MODULE_SOFTDEP("pre: arc4"); MODULE_VERSION("1.0.2");
static unsigned int
From: Roland Hii roland.king.guan.hii@intel.com
[ Upstream commit a1e5388b4d5fc78688e5e9ee6641f779721d6291 ]
When ADDSUB bit is set, the system time seconds field is calculated as the complement of the seconds part of the update value.
For example, if 3.000000001 seconds need to be subtracted from the system time, this field is calculated as 2^32 - 3 = 4294967296 - 3 = 0x100000000 - 3 = 0xFFFFFFFD
Previously, the 0x100000000 is mistakenly written as 100000000.
This is further simplified from sec = (0x100000000ULL - sec); to sec = -sec;
Fixes: ba1ffd74df74 ("stmmac: fix PTP support for GMAC4") Signed-off-by: Roland Hii roland.king.guan.hii@intel.com Signed-off-by: Ong Boon Leong boon.leong.ong@intel.com Signed-off-by: Voon Weifeng weifeng.voon@intel.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c index 8d9cc2157afd..7423262ce590 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c @@ -122,7 +122,7 @@ static int adjust_systime(void __iomem *ioaddr, u32 sec, u32 nsec, * programmed with (2^32 – <new_sec_value>) */ if (gmac4) - sec = (100000000ULL - sec); + sec = -sec;
value = readl(ioaddr + PTP_TCR); if (value & PTP_TCR_TSCTRLSSR)
From: Roland Hii roland.king.guan.hii@intel.com
[ Upstream commit d0bb82fd60183868f46c8ccc595a3d61c3334a18 ]
When transmitting certain PTP frames, e.g. SYNC and DELAY_REQ, the PTP daemon, e.g. ptp4l, is polling the driver for the frame transmit hardware timestamp. The polling will most likely timeout if the tx coalesce is enabled due to the Interrupt-on-Completion (IC) bit is not set in tx descriptor for those frames.
This patch will ignore the tx coalesce parameter and set the IC bit when transmitting PTP frames which need to report out the frame transmit hardware timestamp to user space.
Fixes: f748be531d70 ("net: stmmac: Rework coalesce timer and fix multi-queue races") Signed-off-by: Roland Hii roland.king.guan.hii@intel.com Signed-off-by: Ong Boon Leong boon.leong.ong@intel.com Signed-off-by: Voon Weifeng weifeng.voon@intel.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 22 ++++++++++++------- 1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 45e64d71a93f..5c18874614ba 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -2938,12 +2938,15 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
/* Manage tx mitigation */ tx_q->tx_count_frames += nfrags + 1; - if (priv->tx_coal_frames <= tx_q->tx_count_frames) { + if (likely(priv->tx_coal_frames > tx_q->tx_count_frames) && + !(priv->synopsys_id >= DWMAC_CORE_4_00 && + (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && + priv->hwts_tx_en)) { + stmmac_tx_timer_arm(priv, queue); + } else { + tx_q->tx_count_frames = 0; stmmac_set_tx_ic(priv, desc); priv->xstats.tx_set_ic_bit++; - tx_q->tx_count_frames = 0; - } else { - stmmac_tx_timer_arm(priv, queue); }
skb_tx_timestamp(skb); @@ -3157,12 +3160,15 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) * element in case of no SG. */ tx_q->tx_count_frames += nfrags + 1; - if (priv->tx_coal_frames <= tx_q->tx_count_frames) { + if (likely(priv->tx_coal_frames > tx_q->tx_count_frames) && + !(priv->synopsys_id >= DWMAC_CORE_4_00 && + (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && + priv->hwts_tx_en)) { + stmmac_tx_timer_arm(priv, queue); + } else { + tx_q->tx_count_frames = 0; stmmac_set_tx_ic(priv, desc); priv->xstats.tx_set_ic_bit++; - tx_q->tx_count_frames = 0; - } else { - stmmac_tx_timer_arm(priv, queue); }
skb_tx_timestamp(skb);
From: Sergej Benilov sergej.benilov@googlemail.com
[ Upstream commit 8ac8a01092b2added0749ef937037bf1912e13e3 ]
Since commit 605ad7f184b60cfaacbc038aa6c55ee68dee3c89 "tcp: refine TSO autosizing", outbound throughput is dramatically reduced for some connections, as sis900 is doing TX completion within idle states only.
Make TX completion happen after every transmitted packet.
Test: netperf
before patch:
netperf -H remote -l -2000000 -- -s 1000000
MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to 95.223.112.76 () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec
87380 327680 327680 253.44 0.06
after patch:
netperf -H remote -l -10000000 -- -s 1000000
MIGRATED TCP STREAM TEST from 0.0.0.0 () port 0 AF_INET to 95.223.112.76 () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec
87380 327680 327680 5.38 14.89
Thx to Dave Miller and Eric Dumazet for helpful hints
Signed-off-by: Sergej Benilov sergej.benilov@googlemail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/sis/sis900.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/sis/sis900.c b/drivers/net/ethernet/sis/sis900.c index 4bb89f74742c..d5bcbc40a55f 100644 --- a/drivers/net/ethernet/sis/sis900.c +++ b/drivers/net/ethernet/sis/sis900.c @@ -1057,7 +1057,7 @@ sis900_open(struct net_device *net_dev) sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
/* Enable all known interrupts by setting the interrupt mask. */ - sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE); + sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE | TxDESC); sw32(cr, RxENA | sr32(cr)); sw32(ier, IE);
@@ -1578,7 +1578,7 @@ static void sis900_tx_timeout(struct net_device *net_dev) sw32(txdp, sis_priv->tx_ring_dma);
/* Enable all known interrupts by setting the interrupt mask. */ - sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE); + sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE | TxDESC); }
/** @@ -1618,7 +1618,7 @@ sis900_start_xmit(struct sk_buff *skb, struct net_device *net_dev) spin_unlock_irqrestore(&sis_priv->lock, flags); return NETDEV_TX_OK; } - sis_priv->tx_ring[entry].cmdsts = (OWN | skb->len); + sis_priv->tx_ring[entry].cmdsts = (OWN | INTR | skb->len); sw32(cr, TxENA | sr32(cr));
sis_priv->cur_tx ++; @@ -1674,7 +1674,7 @@ static irqreturn_t sis900_interrupt(int irq, void *dev_instance) do { status = sr32(isr);
- if ((status & (HIBERR|TxURN|TxERR|TxIDLE|RxORN|RxERR|RxOK)) == 0) + if ((status & (HIBERR|TxURN|TxERR|TxIDLE|TxDESC|RxORN|RxERR|RxOK)) == 0) /* nothing intresting happened */ break; handled = 1; @@ -1684,7 +1684,7 @@ static irqreturn_t sis900_interrupt(int irq, void *dev_instance) /* Rx interrupt */ sis900_rx(net_dev);
- if (status & (TxURN | TxERR | TxIDLE)) + if (status & (TxURN | TxERR | TxIDLE | TxDESC)) /* Tx interrupt */ sis900_finish_xmit(net_dev);
@@ -1896,8 +1896,8 @@ static void sis900_finish_xmit (struct net_device *net_dev)
if (tx_status & OWN) { /* The packet is not transmitted yet (owned by hardware) ! - * Note: the interrupt is generated only when Tx Machine - * is idle, so this is an almost impossible case */ + * Note: this is an almost impossible condition + * in case of TxDESC ('descriptor interrupt') */ break; }
@@ -2473,7 +2473,7 @@ static int sis900_resume(struct pci_dev *pci_dev) sis900_set_mode(sis_priv, HW_SPEED_10_MBPS, FDX_CAPABLE_HALF_SELECTED);
/* Enable all known interrupts by setting the interrupt mask. */ - sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE); + sw32(imr, RxSOVR | RxORN | RxERR | RxOK | TxURN | TxERR | TxIDLE | TxDESC); sw32(cr, RxENA | sr32(cr)); sw32(ier, IE);
From: Sébastien Szymanski sebastien.szymanski@armadeus.com
[ Upstream commit 3cf10132ac8d536565f2c02f60a3aeb315863a52 ]
According to the i.MX6UL/L RM, table 3.1 "ARM Cortex A7 domain interrupt summary", the interrupts for the PWM[1-4] go from 83 to 86.
Fixes: b9901fe84f02 ("ARM: dts: imx6ul: add pwm[1-4] nodes") Signed-off-by: Sébastien Szymanski sebastien.szymanski@armadeus.com Reviewed-by: Fabio Estevam festevam@gmail.com Signed-off-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/boot/dts/imx6ul.dtsi | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm/boot/dts/imx6ul.dtsi b/arch/arm/boot/dts/imx6ul.dtsi index 2366f093cc76..336cdead3da5 100644 --- a/arch/arm/boot/dts/imx6ul.dtsi +++ b/arch/arm/boot/dts/imx6ul.dtsi @@ -359,7 +359,7 @@ pwm1: pwm@2080000 { compatible = "fsl,imx6ul-pwm", "fsl,imx27-pwm"; reg = <0x02080000 0x4000>; - interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>; clocks = <&clks IMX6UL_CLK_PWM1>, <&clks IMX6UL_CLK_PWM1>; clock-names = "ipg", "per"; @@ -370,7 +370,7 @@ pwm2: pwm@2084000 { compatible = "fsl,imx6ul-pwm", "fsl,imx27-pwm"; reg = <0x02084000 0x4000>; - interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>; clocks = <&clks IMX6UL_CLK_PWM2>, <&clks IMX6UL_CLK_PWM2>; clock-names = "ipg", "per"; @@ -381,7 +381,7 @@ pwm3: pwm@2088000 { compatible = "fsl,imx6ul-pwm", "fsl,imx27-pwm"; reg = <0x02088000 0x4000>; - interrupts = <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>; clocks = <&clks IMX6UL_CLK_PWM3>, <&clks IMX6UL_CLK_PWM3>; clock-names = "ipg", "per"; @@ -392,7 +392,7 @@ pwm4: pwm@208c000 { compatible = "fsl,imx6ul-pwm", "fsl,imx27-pwm"; reg = <0x0208c000 0x4000>; - interrupts = <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>; + interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>; clocks = <&clks IMX6UL_CLK_PWM4>, <&clks IMX6UL_CLK_PWM4>; clock-names = "ipg", "per";
From: Bjørn Mork bjorn@mork.no
[ Upstream commit 904d88d743b0c94092c5117955eab695df8109e8 ]
The syzbot reported
Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 print_address_description+0x67/0x231 mm/kasan/report.c:188 __kasan_report.cold+0x1a/0x32 mm/kasan/report.c:317 kasan_report+0xe/0x20 mm/kasan/common.c:614 qmi_wwan_probe+0x342/0x360 drivers/net/usb/qmi_wwan.c:1417 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361 really_probe+0x281/0x660 drivers/base/dd.c:509 driver_probe_device+0x104/0x210 drivers/base/dd.c:670 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
Caused by too many confusing indirections and casts. id->driver_info is a pointer stored in a long. We want the pointer here, not the address of it.
Thanks-to: Hillf Danton hdanton@sina.com Reported-by: syzbot+b68605d7fadd21510de1@syzkaller.appspotmail.com Cc: Kristian Evensen kristian.evensen@gmail.com Fixes: e4bf63482c30 ("qmi_wwan: Add quirk for Quectel dynamic config") Signed-off-by: Bjørn Mork bjorn@mork.no Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/usb/qmi_wwan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index d9a6699abe59..e657d8947125 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -1412,7 +1412,7 @@ static int qmi_wwan_probe(struct usb_interface *intf, * different. Ignore the current interface if the number of endpoints * equals the number for the diag interface (two). */ - info = (void *)&id->driver_info; + info = (void *)id->driver_info;
if (info->data & QMI_WWAN_QUIRK_QUECTEL_DYNCFG) { if (desc->bNumEndpoints == 2)
From: Phil Reid preid@electromag.com.au
[ Upstream commit 6dbc6e6f58556369bf999cd7d9793586f1b0e4b4 ]
Currently probing of the mcp23s08 results in an error message "detected irqchip that is shared with multiple gpiochips: please fix the driver"
This is due to the following:
Call to mcp23s08_irqchip_setup() with call hierarchy: mcp23s08_irqchip_setup() gpiochip_irqchip_add_nested() gpiochip_irqchip_add_key() gpiochip_set_irq_hooks()
Call to devm_gpiochip_add_data() with call hierarchy: devm_gpiochip_add_data() gpiochip_add_data_with_key() gpiochip_add_irqchip() gpiochip_set_irq_hooks()
The gpiochip_add_irqchip() returns immediately if there isn't a irqchip but we added a irqchip due to the previous mcp23s08_irqchip_setup() call. So it calls gpiochip_set_irq_hooks() a second time.
Fix this by moving the call to devm_gpiochip_add_data before the call to mcp23s08_irqchip_setup
Fixes: 02e389e63e35 ("pinctrl: mcp23s08: fix irq setup order") Suggested-by: Marco Felsch m.felsch@pengutronix.de Signed-off-by: Phil Reid preid@electromag.com.au Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pinctrl/pinctrl-mcp23s08.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-mcp23s08.c b/drivers/pinctrl/pinctrl-mcp23s08.c index cecbce21d01f..33c3eca0ece9 100644 --- a/drivers/pinctrl/pinctrl-mcp23s08.c +++ b/drivers/pinctrl/pinctrl-mcp23s08.c @@ -889,6 +889,10 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev, if (ret < 0) goto fail;
+ ret = devm_gpiochip_add_data(dev, &mcp->chip, mcp); + if (ret < 0) + goto fail; + mcp->irq_controller = device_property_read_bool(dev, "interrupt-controller"); if (mcp->irq && mcp->irq_controller) { @@ -930,10 +934,6 @@ static int mcp23s08_probe_one(struct mcp23s08 *mcp, struct device *dev, goto fail; }
- ret = devm_gpiochip_add_data(dev, &mcp->chip, mcp); - if (ret < 0) - goto fail; - if (one_regmap_config) { mcp->pinctrl_desc.name = devm_kasprintf(dev, GFP_KERNEL, "mcp23xxx-pinctrl.%d", raw_chip_address);
From: Jerome Marchand jmarchan@redhat.com
[ Upstream commit a0651926553cfe7992166432e418987760882652 ]
For the first call to realloc_argv() in dm_split_args(), old_argv is NULL and size is zero. Then memcpy is called, with the NULL old_argv as the source argument and a zero size argument. AFAIK, this is undefined behavior and generates the following warning when compiled with UBSAN on ppc64le:
In file included from ./arch/powerpc/include/asm/paca.h:19, from ./arch/powerpc/include/asm/current.h:16, from ./include/linux/sched.h:12, from ./include/linux/kthread.h:6, from drivers/md/dm-core.h:12, from drivers/md/dm-table.c:8: In function 'memcpy', inlined from 'realloc_argv' at drivers/md/dm-table.c:565:3, inlined from 'dm_split_args' at drivers/md/dm-table.c:588:9: ./include/linux/string.h:345:9: error: argument 2 null where non-null expected [-Werror=nonnull] return __builtin_memcpy(p, q, size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/md/dm-table.c: In function 'dm_split_args': ./include/linux/string.h:345:9: note: in a call to built-in function '__builtin_memcpy'
Signed-off-by: Jerome Marchand jmarchan@redhat.com Signed-off-by: Mike Snitzer snitzer@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/dm-table.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index c7fe4789c40e..34ab30dd5de9 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -562,7 +562,7 @@ static char **realloc_argv(unsigned *size, char **old_argv) gfp = GFP_NOIO; } argv = kmalloc_array(new_size, sizeof(*argv), gfp); - if (argv) { + if (argv && old_argv) { memcpy(argv, old_argv, *size * sizeof(*argv)); *size = new_size; }
From: Milan Broz gmazyland@gmail.com
[ Upstream commit 2eba4e640b2c4161e31ae20090a53ee02a518657 ]
DM verity should also use DMERR_LIMIT to limit repeat data block corruption messages.
Signed-off-by: Milan Broz gmazyland@gmail.com Signed-off-by: Mike Snitzer snitzer@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/dm-verity-target.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/md/dm-verity-target.c b/drivers/md/dm-verity-target.c index fc65f0dedf7f..e3599b43f9eb 100644 --- a/drivers/md/dm-verity-target.c +++ b/drivers/md/dm-verity-target.c @@ -236,8 +236,8 @@ static int verity_handle_err(struct dm_verity *v, enum verity_block_type type, BUG(); }
- DMERR("%s: %s block %llu is corrupted", v->data_dev->name, type_str, - block); + DMERR_LIMIT("%s: %s block %llu is corrupted", v->data_dev->name, + type_str, block);
if (v->corrupted_errs == DM_VERITY_MAX_CORRUPTED_ERRS) DMERR("%s: reached maximum errors", v->data_dev->name);
From: "Kirill A. Shutemov" kirill@shutemov.name
[ Upstream commit 81c7ed296dcd02bc0b4488246d040e03e633737a ]
A kernel which boots in 5-level paging mode crashes in a small percentage of cases if KASLR is enabled.
This issue was tracked down to the case when the kernel image unpacks in a way that it crosses an 1G boundary. The crash is caused by an overrun of the PMD page table in __startup_64() and corruption of P4D page table allocated next to it. This particular issue is not visible with 4-level paging as P4D page tables are not used.
But the P4D and the PUD calculation have similar problems.
The PMD index calculation is wrong due to operator precedence, which fails to confine the PMDs in the PMD array on wrap around.
The P4D calculation for 5-level paging and the PUD calculation calculate the first index correctly, but then blindly increment it which causes the same issue when a kernel image is located across a 512G and for 5-level paging across a 46T boundary.
This wrap around mishandling was introduced when these parts moved from assembly to C.
Restore it to the correct behaviour.
Fixes: c88d71508e36 ("x86/boot/64: Rewrite startup_64() in C") Signed-off-by: Kirill A. Shutemov kirill.shutemov@linux.intel.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Cc: Borislav Petkov bp@alien8.de Cc: "H. Peter Anvin" hpa@zytor.com Cc: Dave Hansen dave.hansen@linux.intel.com Cc: Andy Lutomirski luto@kernel.org Cc: Peter Zijlstra peterz@infradead.org Link: https://lkml.kernel.org/r/20190620112345.28833-1-kirill.shutemov@linux.intel... Signed-off-by: Sasha Levin sashal@kernel.org --- arch/x86/kernel/head64.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-)
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index ddee1f0870c4..cc5b519dc687 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -190,18 +190,18 @@ unsigned long __head __startup_64(unsigned long physaddr, pgd[i + 0] = (pgdval_t)p4d + pgtable_flags; pgd[i + 1] = (pgdval_t)p4d + pgtable_flags;
- i = (physaddr >> P4D_SHIFT) % PTRS_PER_P4D; - p4d[i + 0] = (pgdval_t)pud + pgtable_flags; - p4d[i + 1] = (pgdval_t)pud + pgtable_flags; + i = physaddr >> P4D_SHIFT; + p4d[(i + 0) % PTRS_PER_P4D] = (pgdval_t)pud + pgtable_flags; + p4d[(i + 1) % PTRS_PER_P4D] = (pgdval_t)pud + pgtable_flags; } else { i = (physaddr >> PGDIR_SHIFT) % PTRS_PER_PGD; pgd[i + 0] = (pgdval_t)pud + pgtable_flags; pgd[i + 1] = (pgdval_t)pud + pgtable_flags; }
- i = (physaddr >> PUD_SHIFT) % PTRS_PER_PUD; - pud[i + 0] = (pudval_t)pmd + pgtable_flags; - pud[i + 1] = (pudval_t)pmd + pgtable_flags; + i = physaddr >> PUD_SHIFT; + pud[(i + 0) % PTRS_PER_PUD] = (pudval_t)pmd + pgtable_flags; + pud[(i + 1) % PTRS_PER_PUD] = (pudval_t)pmd + pgtable_flags;
pmd_entry = __PAGE_KERNEL_LARGE_EXEC & ~_PAGE_GLOBAL; /* Filter out unsupported __PAGE_KERNEL_* bits: */ @@ -211,8 +211,9 @@ unsigned long __head __startup_64(unsigned long physaddr, pmd_entry += physaddr;
for (i = 0; i < DIV_ROUND_UP(_end - _text, PMD_SIZE); i++) { - int idx = i + (physaddr >> PMD_SHIFT) % PTRS_PER_PMD; - pmd[idx] = pmd_entry + i * PMD_SIZE; + int idx = i + (physaddr >> PMD_SHIFT); + + pmd[idx % PTRS_PER_PMD] = pmd_entry + i * PMD_SIZE; }
/*
From: "Kirill A. Shutemov" kirill@shutemov.name
[ Upstream commit c1887159eb48ba40e775584cfb2a443962cf1a05 ]
__startup_64() uses fixup_pointer() to access global variables in a position-independent fashion. Access to next_early_pgt was wrapped into the helper, but one instance in the 5-level paging branch was missed.
GCC generates a R_X86_64_PC32 PC-relative relocation for the access which doesn't trigger the issue, but Clang emmits a R_X86_64_32S which leads to an invalid memory access and system reboot.
Fixes: 187e91fe5e91 ("x86/boot/64/clang: Use fixup_pointer() to access 'next_early_pgt'") Signed-off-by: Kirill A. Shutemov kirill.shutemov@linux.intel.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Cc: Borislav Petkov bp@alien8.de Cc: "H. Peter Anvin" hpa@zytor.com Cc: Dave Hansen dave.hansen@linux.intel.com Cc: Andy Lutomirski luto@kernel.org Cc: Peter Zijlstra peterz@infradead.org Cc: Alexander Potapenko glider@google.com Link: https://lkml.kernel.org/r/20190620112422.29264-1-kirill.shutemov@linux.intel... Signed-off-by: Sasha Levin sashal@kernel.org --- arch/x86/kernel/head64.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index cc5b519dc687..250cfa85b633 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -184,7 +184,8 @@ unsigned long __head __startup_64(unsigned long physaddr, pgtable_flags = _KERNPG_TABLE_NOENC + sme_get_me_mask();
if (la57) { - p4d = fixup_pointer(early_dynamic_pgts[next_early_pgt++], physaddr); + p4d = fixup_pointer(early_dynamic_pgts[(*next_pgt_ptr)++], + physaddr);
i = (physaddr >> PGDIR_SHIFT) % PTRS_PER_PGD; pgd[i + 0] = (pgdval_t)p4d + pgtable_flags;
From: Oleksandr Natalenko oleksandr@redhat.com
[ Upstream commit dcf768b0ac868630e7bdb6f2f1c9fe72788012fa ]
I've spotted another Chicony PixArt mouse in the wild, which requires HID_QUIRK_ALWAYS_POLL quirk, otherwise it disconnects each minute.
USB ID of this device is 0x04f2:0x0939.
We've introduced quirks like this for other models before, so lets add this mouse too.
Link: https://github.com/sriemer/fix-linux-mouse#usb-mouse-disconnectsreconnects-e... Signed-off-by: Oleksandr Natalenko oleksandr@redhat.com Acked-by: Sebastian Parschauer s.parschauer@gmx.de Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hid/hid-ids.h | 1 + drivers/hid/hid-quirks.c | 1 + 2 files changed, 2 insertions(+)
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 97d33b8ed36c..4ff61fb43500 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -265,6 +265,7 @@ #define USB_DEVICE_ID_CHICONY_MULTI_TOUCH 0xb19d #define USB_DEVICE_ID_CHICONY_WIRELESS 0x0618 #define USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE 0x1053 +#define USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE2 0x0939 #define USB_DEVICE_ID_CHICONY_WIRELESS2 0x1123 #define USB_DEVICE_ID_ASUS_AK1D 0x1125 #define USB_DEVICE_ID_CHICONY_ACER_SWITCH12 0x1421 diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c index e24790c988c0..6046c2439700 100644 --- a/drivers/hid/hid-quirks.c +++ b/drivers/hid/hid-quirks.c @@ -45,6 +45,7 @@ static const struct hid_device_id hid_quirks[] = { { HID_USB_DEVICE(USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM), HID_QUIRK_NOGET }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_MULTI_TOUCH), HID_QUIRK_MULTI_INPUT }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE), HID_QUIRK_ALWAYS_POLL }, + { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE2), HID_QUIRK_ALWAYS_POLL }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS), HID_QUIRK_MULTI_INPUT }, { HID_USB_DEVICE(USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD), HID_QUIRK_BADPAD }, { HID_USB_DEVICE(USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_3AXIS_5BUTTON_STICK), HID_QUIRK_NOGET },
From: Kai-Heng Feng kai.heng.feng@canonical.com
[ Upstream commit 0a95fc733da375de0688d0f1fd3a2869a1c1d499 ]
There's a new ALPS touchpad/pointstick combo device that requires MT_CLS_WIN_8_DUAL to make its pointsitck work as a mouse.
The device can be found on HP ZBook 17 G5.
Signed-off-by: Kai-Heng Feng kai.heng.feng@canonical.com Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/hid/hid-ids.h | 1 + drivers/hid/hid-multitouch.c | 4 ++++ 2 files changed, 5 insertions(+)
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 4ff61fb43500..700874ab9b5f 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -82,6 +82,7 @@ #define HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP 0x1220 #define HID_DEVICE_ID_ALPS_U1 0x1215 #define HID_DEVICE_ID_ALPS_T4_BTNLESS 0x120C +#define HID_DEVICE_ID_ALPS_1222 0x1222
#define USB_VENDOR_ID_AMI 0x046b diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 184e49036e1d..f9167d0e095c 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -1788,6 +1788,10 @@ static const struct hid_device_id mt_devices[] = { HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) }, + { .driver_data = MT_CLS_WIN_8_DUAL, + HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, + USB_VENDOR_ID_ALPS_JP, + HID_DEVICE_ID_ALPS_1222) },
/* Lenovo X1 TAB Gen 2 */ { .driver_data = MT_CLS_WIN_8_DUAL,
From: Nicolas Boichat drinkcat@chromium.org
[ Upstream commit 35594bc7cecf3a78504b590e350570e8f4d7779e ]
Before suspending, mtk-eint would set the interrupt mask to the one in wake_mask. However, some of these interrupts may not have a corresponding interrupt handler, or the interrupt may be disabled.
On resume, the eint irq handler would trigger nevertheless, and irq/pm.c:irq_pm_check_wakeup would be called, which would try to call irq_disable. However, if the interrupt is not enabled (irqd_irq_disabled(&desc->irq_data) is true), the call does nothing, and the interrupt is left enabled in the eint driver.
Especially for level-sensitive interrupts, this will lead to an interrupt storm on resume.
If we detect that an interrupt is only in wake_mask, but not in cur_mask, we can just mask it out immediately (as mtk_eint_resume would do anyway at a later stage in the resume sequence, when restoring cur_mask).
Fixes: bf22ff45bed6 ("genirq: Avoid unnecessary low level irq function calls") Signed-off-by: Nicolas Boichat drinkcat@chromium.org Acked-by: Sean Wang sean.wang@kernel.org Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pinctrl/mediatek/mtk-eint.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/pinctrl/mediatek/mtk-eint.c b/drivers/pinctrl/mediatek/mtk-eint.c index a613e546717a..b9f3c02ba59d 100644 --- a/drivers/pinctrl/mediatek/mtk-eint.c +++ b/drivers/pinctrl/mediatek/mtk-eint.c @@ -318,7 +318,7 @@ static void mtk_eint_irq_handler(struct irq_desc *desc) struct irq_chip *chip = irq_desc_get_chip(desc); struct mtk_eint *eint = irq_desc_get_handler_data(desc); unsigned int status, eint_num; - int offset, index, virq; + int offset, mask_offset, index, virq; void __iomem *reg = mtk_eint_get_offset(eint, 0, eint->regs->stat); int dual_edge, start_level, curr_level;
@@ -328,10 +328,24 @@ static void mtk_eint_irq_handler(struct irq_desc *desc) status = readl(reg); while (status) { offset = __ffs(status); + mask_offset = eint_num >> 5; index = eint_num + offset; virq = irq_find_mapping(eint->domain, index); status &= ~BIT(offset);
+ /* + * If we get an interrupt on pin that was only required + * for wake (but no real interrupt requested), mask the + * interrupt (as would mtk_eint_resume do anyway later + * in the resume sequence). + */ + if (eint->wake_mask[mask_offset] & BIT(offset) && + !(eint->cur_mask[mask_offset] & BIT(offset))) { + writel_relaxed(BIT(offset), reg - + eint->regs->stat + + eint->regs->mask_set); + } + dual_edge = eint->dual_edge[index]; if (dual_edge) { /*
From: Eiichi Tsukata devel@etsukata.com
[ Upstream commit 33d4a5a7a5b4d02915d765064b2319e90a11cbde ]
Setting invalid value to /sys/devices/system/cpu/cpuX/hotplug/fail can control `struct cpuhp_step *sp` address, results in the following global-out-of-bounds read.
Reproducer:
# echo -2 > /sys/devices/system/cpu/cpu0/hotplug/fail
KASAN report:
BUG: KASAN: global-out-of-bounds in write_cpuhp_fail+0x2cd/0x2e0 Read of size 8 at addr ffffffff89734438 by task bash/1941
CPU: 0 PID: 1941 Comm: bash Not tainted 5.2.0-rc6+ #31 Call Trace: write_cpuhp_fail+0x2cd/0x2e0 dev_attr_store+0x58/0x80 sysfs_kf_write+0x13d/0x1a0 kernfs_fop_write+0x2bc/0x460 vfs_write+0x1e1/0x560 ksys_write+0x126/0x250 do_syscall_64+0xc1/0x390 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f05e4f4c970
The buggy address belongs to the variable: cpu_hotplug_lock+0x98/0xa0
Memory state around the buggy address: ffffffff89734300: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00 ffffffff89734380: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00
ffffffff89734400: 00 00 00 00 fa fa fa fa 00 00 00 00 fa fa fa fa
^ ffffffff89734480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffffff89734500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Add a sanity check for the value written from user space.
Fixes: 1db49484f21ed ("smp/hotplug: Hotplug state fail injection") Signed-off-by: Eiichi Tsukata devel@etsukata.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Cc: peterz@infradead.org Link: https://lkml.kernel.org/r/20190627024732.31672-1-devel@etsukata.com Signed-off-by: Sasha Levin sashal@kernel.org --- kernel/cpu.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/kernel/cpu.c b/kernel/cpu.c index 5d65eae893bd..ad33c03c69b0 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -1925,6 +1925,9 @@ static ssize_t write_cpuhp_fail(struct device *dev, if (ret) return ret;
+ if (fail < CPUHP_OFFLINE || fail > CPUHP_ONLINE) + return -EINVAL; + /* * Cannot fail STARTING/DYING callbacks. */
From: Nicolas Boichat drinkcat@chromium.org
[ Upstream commit 9d957a959bc8c3dfe37572ac8e99affb5a885965 ]
During suspend/resume, mtk_eint_mask may be called while wake_mask is active. For example, this happens if a wake-source with an active interrupt handler wakes the system: irq/pm.c:irq_pm_check_wakeup would disable the interrupt, so that it can be handled later on in the resume flow.
However, this may happen before mtk_eint_do_resume is called: in this case, wake_mask is loaded, and cur_mask is restored from an older copy, re-enabling the interrupt, and causing an interrupt storm (especially for level interrupts).
Step by step, for a line that has both wake and interrupt enabled: 1. cur_mask[irq] = 1; wake_mask[irq] = 1; EINT_EN[irq] = 1 (interrupt enabled at hardware level) 2. System suspends, resumes due to that line (at this stage EINT_EN == wake_mask) 3. irq_pm_check_wakeup is called, and disables the interrupt => EINT_EN[irq] = 0, but we still have cur_mask[irq] = 1 4. mtk_eint_do_resume is called, and restores EINT_EN = cur_mask, so it reenables EINT_EN[irq] = 1 => interrupt storm as the driver is not yet ready to handle the interrupt.
This patch fixes the issue in step 3, by recording all mask/unmask changes in cur_mask. This also avoids the need to read the current mask in eint_do_suspend, and we can remove mtk_eint_chip_read_mask function.
The interrupt will be re-enabled properly later on, sometimes after mtk_eint_do_resume, when the driver is ready to handle it.
Fixes: 58a5e1b64bb0 ("pinctrl: mediatek: Implement wake handler and suspend resume") Signed-off-by: Nicolas Boichat drinkcat@chromium.org Acked-by: Sean Wang sean.wang@kernel.org Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pinctrl/mediatek/mtk-eint.c | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-)
diff --git a/drivers/pinctrl/mediatek/mtk-eint.c b/drivers/pinctrl/mediatek/mtk-eint.c index b9f3c02ba59d..564cfaee129d 100644 --- a/drivers/pinctrl/mediatek/mtk-eint.c +++ b/drivers/pinctrl/mediatek/mtk-eint.c @@ -113,6 +113,8 @@ static void mtk_eint_mask(struct irq_data *d) void __iomem *reg = mtk_eint_get_offset(eint, d->hwirq, eint->regs->mask_set);
+ eint->cur_mask[d->hwirq >> 5] &= ~mask; + writel(mask, reg); }
@@ -123,6 +125,8 @@ static void mtk_eint_unmask(struct irq_data *d) void __iomem *reg = mtk_eint_get_offset(eint, d->hwirq, eint->regs->mask_clr);
+ eint->cur_mask[d->hwirq >> 5] |= mask; + writel(mask, reg);
if (eint->dual_edge[d->hwirq]) @@ -217,19 +221,6 @@ static void mtk_eint_chip_write_mask(const struct mtk_eint *eint, } }
-static void mtk_eint_chip_read_mask(const struct mtk_eint *eint, - void __iomem *base, u32 *buf) -{ - int port; - void __iomem *reg; - - for (port = 0; port < eint->hw->ports; port++) { - reg = base + eint->regs->mask + (port << 2); - buf[port] = ~readl_relaxed(reg); - /* Mask is 0 when irq is enabled, and 1 when disabled. */ - } -} - static int mtk_eint_irq_request_resources(struct irq_data *d) { struct mtk_eint *eint = irq_data_get_irq_chip_data(d); @@ -384,7 +375,6 @@ static void mtk_eint_irq_handler(struct irq_desc *desc)
int mtk_eint_do_suspend(struct mtk_eint *eint) { - mtk_eint_chip_read_mask(eint, eint->base, eint->cur_mask); mtk_eint_chip_write_mask(eint, eint->base, eint->wake_mask);
return 0;
From: Vinod Koul vkoul@kernel.org
[ Upstream commit 8f9fab480c7a87b10bb5440b5555f370272a5d59 ]
DIV_ROUND_UP_ULL adds the two arguments and then invokes DIV_ROUND_DOWN_ULL. But on a 32bit system the addition of two 32 bit values can overflow. DIV_ROUND_DOWN_ULL does it correctly and stashes the addition into a unsigned long long so cast the result to unsigned long long here to avoid the overflow condition.
[akpm@linux-foundation.org: DIV_ROUND_UP_ULL must be an rval] Link: http://lkml.kernel.org/r/20190625100518.30753-1-vkoul@kernel.org Signed-off-by: Vinod Koul vkoul@kernel.org Reviewed-by: Andrew Morton akpm@linux-foundation.org Cc: Bjorn Andersson bjorn.andersson@linaro.org Cc: Randy Dunlap rdunlap@infradead.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- include/linux/kernel.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 3d83ebb302cf..f6f94e54ab96 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -118,7 +118,8 @@ #define DIV_ROUND_DOWN_ULL(ll, d) \ ({ unsigned long long _tmp = (ll); do_div(_tmp, d); _tmp; })
-#define DIV_ROUND_UP_ULL(ll, d) DIV_ROUND_DOWN_ULL((ll) + (d) - 1, (d)) +#define DIV_ROUND_UP_ULL(ll, d) \ + DIV_ROUND_DOWN_ULL((unsigned long long)(ll) + (d) - 1, (d))
#if BITS_PER_LONG == 32 # define DIV_ROUND_UP_SECTOR_T(ll,d) DIV_ROUND_UP_ULL(ll, d)
linux-stable-mirror@lists.linaro.org
-
Sasha Levin