March 2018 - Linux-stable-mirror

+ x86-mm-implement-free-pmd-pte-page-interfaces.patch added to -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: x86/mm: implement free pmd/pte page interfaces has been added to the -mm tree. Its filename is x86-mm-implement-free-pmd-pte-page-interfaces.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/x86-mm-implement-free-pmd-pte-page… and later at http://ozlabs.org/~akpm/mmotm/broken-out/x86-mm-implement-free-pmd-pte-page… 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: Toshi Kani <toshi.kani(a)hpe.com> Subject: x86/mm: implement free pmd/pte page interfaces Implement pud_free_pmd_page() and pmd_free_pte_page() on x86, which clear a given pud/pmd entry and free up lower level page table(s). Address range associated with the pud/pmd entry must have been purged by INVLPG. Link: http://lkml.kernel.org/r/20180314180155.19492-3-toshi.kani@hpe.com Fixes: e61ce6ade404e ("mm: change ioremap to set up huge I/O mappings") Signed-off-by: Toshi Kani <toshi.kani(a)hpe.com> Reported-by: Lei Li <lious.lilei(a)hisilicon.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Ingo Molnar <mingo(a)redhat.com> Cc: "H. Peter Anvin" <hpa(a)zytor.com> Cc: Borislav Petkov <bp(a)suse.de> Cc: Matthew Wilcox <willy(a)infradead.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- arch/x86/mm/pgtable.c | 28 ++++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) diff -puN arch/x86/mm/pgtable.c~x86-mm-implement-free-pmd-pte-page-interfaces arch/x86/mm/pgtable.c --- a/arch/x86/mm/pgtable.c~x86-mm-implement-free-pmd-pte-page-interfaces +++ a/arch/x86/mm/pgtable.c @@ -712,7 +712,22 @@ int pmd_clear_huge(pmd_t *pmd) */ int pud_free_pmd_page(pud_t *pud) { - return pud_none(*pud); + pmd_t *pmd; + int i; + + if (pud_none(*pud)) + return 1; + + pmd = (pmd_t *)pud_page_vaddr(*pud); + + for (i = 0; i < PTRS_PER_PMD; i++) + if (!pmd_free_pte_page(&pmd[i])) + return 0; + + pud_clear(pud); + free_page((unsigned long)pmd); + + return 1; } /** @@ -724,6 +739,15 @@ int pud_free_pmd_page(pud_t *pud) */ int pmd_free_pte_page(pmd_t *pmd) { - return pmd_none(*pmd); + pte_t *pte; + + if (pmd_none(*pmd)) + return 1; + + pte = (pte_t *)pmd_page_vaddr(*pmd); + pmd_clear(pmd); + free_page((unsigned long)pte); + + return 1; } #endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */ _ Patches currently in -mm which might be from toshi.kani(a)hpe.com are mm-vmalloc-add-interfaces-to-free-unmapped-page-table.patch x86-mm-implement-free-pmd-pte-page-interfaces.patch

6 years, 10 months

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+ mm-vmalloc-add-interfaces-to-free-unmapped-page-table.patch added to -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: mm/vmalloc: add interfaces to free unmapped page table has been added to the -mm tree. Its filename is mm-vmalloc-add-interfaces-to-free-unmapped-page-table.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/mm-vmalloc-add-interfaces-to-free-… and later at http://ozlabs.org/~akpm/mmotm/broken-out/mm-vmalloc-add-interfaces-to-free-… 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: Toshi Kani <toshi.kani(a)hpe.com> Subject: mm/vmalloc: add interfaces to free unmapped page table On architectures with CONFIG_HAVE_ARCH_HUGE_VMAP set, ioremap() may create pud/pmd mappings. Kernel panic was observed on arm64 systems with Cortex-A75 in the following steps as described by Hanjun Guo. 1. ioremap a 4K size, valid page table will build, 2. iounmap it, pte0 will set to 0; 3. ioremap the same address with 2M size, pgd/pmd is unchanged, then set the a new value for pmd; 4. pte0 is leaked; 5. CPU may meet exception because the old pmd is still in TLB, which will lead to kernel panic. This panic is not reproducible on x86. INVLPG, called from iounmap, purges all levels of entries associated with purged address on x86. x86 still has memory leak. The patch changes the ioremap path to free unmapped page table(s) since doing so in the unmap path has the following issues: - The iounmap() path is shared with vunmap(). Since vmap() only supports pte mappings, making vunmap() to free a pte page is an overhead for regular vmap users as they do not need a pte page freed up. - Checking if all entries in a pte page are cleared in the unmap path is racy, and serializing this check is expensive. - The unmap path calls free_vmap_area_noflush() to do lazy TLB purges. Clearing a pud/pmd entry before the lazy TLB purges needs extra TLB purge. Add two interfaces, pud_free_pmd_page() and pmd_free_pte_page(), which clear a given pud/pmd entry and free up a page for the lower level entries. This patch implements their stub functions on x86 and arm64, which work as workaround. Link: http://lkml.kernel.org/r/20180314180155.19492-2-toshi.kani@hpe.com Fixes: e61ce6ade404e ("mm: change ioremap to set up huge I/O mappings") Reported-by: Lei Li <lious.lilei(a)hisilicon.com> Signed-off-by: Toshi Kani <toshi.kani(a)hpe.com> Cc: Catalin Marinas <catalin.marinas(a)arm.com> Cc: Wang Xuefeng <wxf.wang(a)hisilicon.com> Cc: Will Deacon <will.deacon(a)arm.com> Cc: Hanjun Guo <guohanjun(a)huawei.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Ingo Molnar <mingo(a)redhat.com> Cc: "H. Peter Anvin" <hpa(a)zytor.com> Cc: Borislav Petkov <bp(a)suse.de> Cc: Matthew Wilcox <willy(a)infradead.org> Cc: Chintan Pandya <cpandya(a)codeaurora.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- arch/arm64/mm/mmu.c | 10 ++++++++++ arch/x86/mm/pgtable.c | 24 ++++++++++++++++++++++++ include/asm-generic/pgtable.h | 10 ++++++++++ lib/ioremap.c | 6 ++++-- 4 files changed, 48 insertions(+), 2 deletions(-) diff -puN arch/arm64/mm/mmu.c~mm-vmalloc-add-interfaces-to-free-unmapped-page-table arch/arm64/mm/mmu.c --- a/arch/arm64/mm/mmu.c~mm-vmalloc-add-interfaces-to-free-unmapped-page-table +++ a/arch/arm64/mm/mmu.c @@ -972,3 +972,13 @@ int pmd_clear_huge(pmd_t *pmdp) pmd_clear(pmdp); return 1; } + +int pud_free_pmd_page(pud_t *pud) +{ + return pud_none(*pud); +} + +int pmd_free_pte_page(pmd_t *pmd) +{ + return pmd_none(*pmd); +} diff -puN arch/x86/mm/pgtable.c~mm-vmalloc-add-interfaces-to-free-unmapped-page-table arch/x86/mm/pgtable.c --- a/arch/x86/mm/pgtable.c~mm-vmalloc-add-interfaces-to-free-unmapped-page-table +++ a/arch/x86/mm/pgtable.c @@ -702,4 +702,28 @@ int pmd_clear_huge(pmd_t *pmd) return 0; } + +/** + * pud_free_pmd_page - Clear pud entry and free pmd page. + * @pud: Pointer to a PUD. + * + * Context: The pud range has been unmaped and TLB purged. + * Return: 1 if clearing the entry succeeded. 0 otherwise. + */ +int pud_free_pmd_page(pud_t *pud) +{ + return pud_none(*pud); +} + +/** + * pmd_free_pte_page - Clear pmd entry and free pte page. + * @pmd: Pointer to a PMD. + * + * Context: The pmd range has been unmaped and TLB purged. + * Return: 1 if clearing the entry succeeded. 0 otherwise. + */ +int pmd_free_pte_page(pmd_t *pmd) +{ + return pmd_none(*pmd); +} #endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */ diff -puN include/asm-generic/pgtable.h~mm-vmalloc-add-interfaces-to-free-unmapped-page-table include/asm-generic/pgtable.h --- a/include/asm-generic/pgtable.h~mm-vmalloc-add-interfaces-to-free-unmapped-page-table +++ a/include/asm-generic/pgtable.h @@ -983,6 +983,8 @@ int pud_set_huge(pud_t *pud, phys_addr_t int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot); int pud_clear_huge(pud_t *pud); int pmd_clear_huge(pmd_t *pmd); +int pud_free_pmd_page(pud_t *pud); +int pmd_free_pte_page(pmd_t *pmd); #else /* !CONFIG_HAVE_ARCH_HUGE_VMAP */ static inline int p4d_set_huge(p4d_t *p4d, phys_addr_t addr, pgprot_t prot) { @@ -1008,6 +1010,14 @@ static inline int pmd_clear_huge(pmd_t * { return 0; } +static inline int pud_free_pmd_page(pud_t *pud) +{ + return 0; +} +static inline int pmd_free_pte_page(pud_t *pmd) +{ + return 0; +} #endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */ #ifndef __HAVE_ARCH_FLUSH_PMD_TLB_RANGE diff -puN lib/ioremap.c~mm-vmalloc-add-interfaces-to-free-unmapped-page-table lib/ioremap.c --- a/lib/ioremap.c~mm-vmalloc-add-interfaces-to-free-unmapped-page-table +++ a/lib/ioremap.c @@ -91,7 +91,8 @@ static inline int ioremap_pmd_range(pud_ if (ioremap_pmd_enabled() && ((next - addr) == PMD_SIZE) && - IS_ALIGNED(phys_addr + addr, PMD_SIZE)) { + IS_ALIGNED(phys_addr + addr, PMD_SIZE) && + pmd_free_pte_page(pmd)) { if (pmd_set_huge(pmd, phys_addr + addr, prot)) continue; } @@ -117,7 +118,8 @@ static inline int ioremap_pud_range(p4d_ if (ioremap_pud_enabled() && ((next - addr) == PUD_SIZE) && - IS_ALIGNED(phys_addr + addr, PUD_SIZE)) { + IS_ALIGNED(phys_addr + addr, PUD_SIZE) && + pud_free_pmd_page(pud)) { if (pud_set_huge(pud, phys_addr + addr, prot)) continue; } _ Patches currently in -mm which might be from toshi.kani(a)hpe.com are mm-vmalloc-add-interfaces-to-free-unmapped-page-table.patch x86-mm-implement-free-pmd-pte-page-interfaces.patch

6 years, 10 months

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[PATCH 1/8] fs/aio: Add explicit RCU grace period when freeing kioctx

by Tejun Heo

While fixing refcounting, e34ecee2ae79 ("aio: Fix a trinity splat") incorrectly removed explicit RCU grace period before freeing kioctx. The intention seems to be depending on the internal RCU grace periods of percpu_ref; however, percpu_ref uses a different flavor of RCU, sched-RCU. This can lead to kioctx being freed while RCU read protected dereferences are still in progress. Fix it by updating free_ioctx() to go through call_rcu() explicitly. v2: Comment added to explain double bouncing. Signed-off-by: Tejun Heo <tj(a)kernel.org> Reported-by: Jann Horn <jannh(a)google.com> Fixes: e34ecee2ae79 ("aio: Fix a trinity splat") Cc: Kent Overstreet <kent.overstreet(a)gmail.com> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: stable(a)vger.kernel.org --- fs/aio.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/fs/aio.c b/fs/aio.c index a062d75..eb2e0cf 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -115,7 +115,8 @@ struct kioctx { struct page **ring_pages; long nr_pages; - struct work_struct free_work; + struct rcu_head free_rcu; + struct work_struct free_work; /* see free_ioctx() */ /* * signals when all in-flight requests are done @@ -588,6 +589,12 @@ static int kiocb_cancel(struct aio_kiocb *kiocb) return cancel(&kiocb->common); } +/* + * free_ioctx() should be RCU delayed to synchronize against the RCU + * protected lookup_ioctx() and also needs process context to call + * aio_free_ring(), so the double bouncing through kioctx->free_rcu and + * ->free_work. + */ static void free_ioctx(struct work_struct *work) { struct kioctx *ctx = container_of(work, struct kioctx, free_work); @@ -601,6 +608,14 @@ static void free_ioctx(struct work_struct *work) kmem_cache_free(kioctx_cachep, ctx); } +static void free_ioctx_rcufn(struct rcu_head *head) +{ + struct kioctx *ctx = container_of(head, struct kioctx, free_rcu); + + INIT_WORK(&ctx->free_work, free_ioctx); + schedule_work(&ctx->free_work); +} + static void free_ioctx_reqs(struct percpu_ref *ref) { struct kioctx *ctx = container_of(ref, struct kioctx, reqs); @@ -609,8 +624,8 @@ static void free_ioctx_reqs(struct percpu_ref *ref) if (ctx->rq_wait && atomic_dec_and_test(&ctx->rq_wait->count)) complete(&ctx->rq_wait->comp); - INIT_WORK(&ctx->free_work, free_ioctx); - schedule_work(&ctx->free_work); + /* Synchronize against RCU protected table->table[] dereferences */ + call_rcu(&ctx->free_rcu, free_ioctx_rcufn); } /* @@ -838,7 +853,7 @@ static int kill_ioctx(struct mm_struct *mm, struct kioctx *ctx, table->table[ctx->id] = NULL; spin_unlock(&mm->ioctx_lock); - /* percpu_ref_kill() will do the necessary call_rcu() */ + /* free_ioctx_reqs() will do the necessary RCU synchronization */ wake_up_all(&ctx->wait); /* -- 2.9.5

6 years, 10 months

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patch "mei: remove dev_err message on an unsupported ioctl" added to char-misc-testing

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled mei: remove dev_err message on an unsupported ioctl to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-testing branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will be merged to the char-misc-next branch sometime soon, after it passes testing, and the merge window is open. If you have any questions about this process, please let me know. >From bb0829a741792b56c908d7745bc0b2b540293bcc Mon Sep 17 00:00:00 2001 From: Colin Ian King <colin.king(a)canonical.com> Date: Tue, 27 Feb 2018 16:21:05 +0000 Subject: mei: remove dev_err message on an unsupported ioctl Currently the driver spams the kernel log on unsupported ioctls which is unnecessary as the ioctl returns -ENOIOCTLCMD to indicate this anyway. I suspect this was originally for debugging purposes but it really is not required so remove it. Signed-off-by: Colin Ian King <colin.king(a)canonical.com> Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/misc/mei/main.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index 401b1bc4d282..7465f17e1559 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -528,7 +528,6 @@ static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data) break; default: - dev_err(dev->dev, ": unsupported ioctl %d.\n", cmd); rets = -ENOIOCTLCMD; } -- 2.16.2

6 years, 10 months

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[PATCH 4.14 000/140] 4.14.27-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.14.27 release. There are 140 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Thu Mar 15 15:24:23 UTC 2018. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.14.27-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.14.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.14.27-rc1 Francis Deslauriers <francis.deslauriers(a)efficios.com> x86/kprobes: Fix kernel crash when probing .entry_trampoline code Josh Poimboeuf <jpoimboe(a)redhat.com> objtool: Fix 32-bit build Josh Poimboeuf <jpoimboe(a)redhat.com> objtool: Fix another switch table detection issue Peter Zijlstra <peterz(a)infradead.org> objtool, retpolines: Integrate objtool with retpoline support more closely Peter Zijlstra <peterz(a)infradead.org> objtool: Add module specific retpoline rules Masahiro Yamada <yamada.masahiro(a)socionext.com> kbuild: move cc-option and cc-disable-warning after incl. arch Makefile Chris Fries <cfries(a)google.com> kbuild: Set KBUILD_CFLAGS before incl. arch Makefile Masahiro Yamada <yamada.masahiro(a)socionext.com> kbuild: re-order the code to not parse unnecessary variables Peter Zijlstra <peterz(a)infradead.org> objtool: Add retpoline validation Peter Zijlstra <peterz(a)infradead.org> objtool: Use existing global variables for options Peter Zijlstra <peterz(a)infradead.org> x86/mm/sme, objtool: Annotate indirect call in sme_encrypt_execute() Peter Zijlstra <peterz(a)infradead.org> x86/boot, objtool: Annotate indirect jump in secondary_startup_64() Peter Zijlstra <peterz(a)infradead.org> x86/paravirt, objtool: Annotate indirect calls Ingo Molnar <mingo(a)kernel.org> x86/speculation: Move firmware_restrict_branch_speculation_*() from C to CPP Peter Zijlstra <peterz(a)infradead.org> x86/speculation, objtool: Annotate indirect calls/jumps for objtool David Woodhouse <dwmw(a)amazon.co.uk> x86/retpoline: Support retpoline builds with Clang David Woodhouse <dwmw(a)amazon.co.uk> x86/speculation: Use IBRS if available before calling into firmware David Woodhouse <dwmw(a)amazon.co.uk> Revert "x86/retpoline: Simplify vmexit_fill_RSB()" Jan Beulich <JBeulich(a)suse.com> x86-64/realmode: Add instruction suffix Jan Beulich <JBeulich(a)suse.com> x86/LDT: Avoid warning in 32-bit builds with older gcc Jan Beulich <JBeulich(a)suse.com> x86/asm: Improve how GEN_*_SUFFIXED_RMWcc() specify clobbers Jann Horn <jannh(a)google.com> x86/mm: Remove stale comment about KMEMCHECK Dominik Brodowski <linux(a)dominikbrodowski.net> x86/entry/64: Use 'xorl' for faster register clearing Dominik Brodowski <linux(a)dominikbrodowski.net> x86/entry: Reduce the code footprint of the 'idtentry' macro Dan Williams <dan.j.williams(a)intel.com> nospec: Include <asm/barrier.h> dependency Dan Williams <dan.j.williams(a)intel.com> nospec: Kill array_index_nospec_mask_check() Paul Burton <paul.burton(a)mips.com> MIPS: CPC: Map registers using DT in mips_cpc_default_phys_base() Paul Burton <paul.burton(a)mips.com> dt-bindings: Document mti,mips-cpc binding himanshu.madhani(a)cavium.com <himanshu.madhani(a)cavium.com> scsi: qla2xxx: Fix recursion while sending terminate exchange himanshu.madhani(a)cavium.com <himanshu.madhani(a)cavium.com> scsi: qla2xxx: Fix NULL pointer crash due to probe failure Dennis Wassenberg <dennis.wassenberg(a)secunet.com> ALSA: hda: add dock and led support for HP ProBook 640 G2 Dennis Wassenberg <dennis.wassenberg(a)secunet.com> ALSA: hda: add dock and led support for HP EliteBook 820 G3 Hui Wang <hui.wang(a)canonical.com> ALSA: hda - Fix a wrong FIXUP for alc289 on Dell machines Takashi Iwai <tiwai(a)suse.de> ALSA: seq: More protection for concurrent write and ioctl races Takashi Iwai <tiwai(a)suse.de> ALSA: seq: Don't allow resizing pool in use Dennis Wassenberg <dennis.wassenberg(a)secunet.com> ALSA: hda/realtek - Make dock sound work on ThinkPad L570 Takashi Iwai <tiwai(a)suse.de> ALSA: hda/realtek - Fix dock line-out volume on Dell Precision 7520 Benjamin Berg <bberg(a)redhat.com> ALSA: hda/realtek: Limit mic boost on T480 Kailang Yang <kailang(a)realtek.com> ALSA: hda/realtek - Add headset mode support for Dell laptop Kailang Yang <kailang(a)realtek.com> ALSA: hda/realtek - Add support headset mode for DELL WYSE Konrad Rzeszutek Wilk <konrad.wilk(a)oracle.com> x86/spectre_v2: Don't check microcode versions when running under hypervisors Adrian Hunter <adrian.hunter(a)intel.com> perf tools: Fix trigger class trigger_on() Seunghun Han <kkamagui(a)gmail.com> x86/MCE: Serialize sysfs changes Tony Luck <tony.luck(a)intel.com> x86/MCE: Save microcode revision in machine check records Michael Lyle <mlyle(a)lyle.org> bcache: don't attach backing with duplicate UUID Tang Junhui <tang.junhui(a)zte.com.cn> bcache: fix crashes in duplicate cache device register Sergey Gorenko <sergeygo(a)mellanox.com> IB/mlx5: Fix incorrect size of klms in the memory region Arnd Bergmann <arnd(a)arndb.de> dm bufio: avoid false-positive Wmaybe-uninitialized warning James Hogan <jhogan(a)kernel.org> kbuild: Handle builtin dtb file names containing hyphens Parav Pandit <parav(a)mellanox.com> IB/core: Fix missing RDMA cgroups release in case of failure to register device Ard Biesheuvel <ard.biesheuvel(a)linaro.org> arm64: mm: fix thinko in non-global page table attribute check David Hildenbrand <david(a)redhat.com> KVM: s390: fix memory overwrites when not using SCA entries Tiwei Bie <tiwei.bie(a)intel.com> virtio_ring: fix num_free handling in error case Ross Zwisler <ross.zwisler(a)linux.intel.com> loop: Fix lost writes caused by missing flag Matthew Wilcox <mawilcox(a)microsoft.com> Documentation/sphinx: Fix Directive import error Daniel Vacek <neelx(a)redhat.com> mm/page_alloc: fix memmap_init_zone pageblock alignment Daniel Vacek <neelx(a)redhat.com> mm/memblock.c: hardcode the end_pfn being -1 Kees Cook <keescook(a)chromium.org> lib/bug.c: exclude non-BUG/WARN exceptions from report_bug() Zhang Bo <zbsdta(a)126.com> Input: matrix_keypad - fix race when disabling interrupts Koen Vandeputte <koen.vandeputte(a)ncentric.com> PCI: dwc: Fix enumeration end when reaching root subordinate Colin Ian King <colin.king(a)canonical.com> MIPS: OCTEON: irq: Check for null return on kzalloc allocation Colin Ian King <colin.king(a)canonical.com> MIPS: ath25: Check for kzalloc allocation failure Justin Chen <justinpopo6(a)gmail.com> MIPS: BMIPS: Do not mask IPIs during suspend James Zhu <James.Zhu(a)amd.com> drm/amdgpu:Always save uvd vcpu_bo in VM Mode James Zhu <James.Zhu(a)amd.com> drm/amdgpu:Correct max uvd handles Alex Deucher <alexander.deucher(a)amd.com> drm/amdgpu: fix KV harvesting Alex Deucher <alexander.deucher(a)amd.com> drm/radeon: fix KV harvesting Rex Zhu <Rex.Zhu(a)amd.com> drm/amdgpu: Notify sbios device ready before send request Alex Deucher <alexander.deucher(a)amd.com> drm/amdgpu: used cached pcie gen info for SI (v2) Eric Huang <JinHuiEric.Huang(a)amd.com> drm/amd/powerplay: fix power over limit on Fiji Ben Crocker <bcrocker(a)redhat.com> drm/radeon: insist on 32-bit DMA for Cedar on PPC64/PPC64LE Alex Deucher <alexander.deucher(a)amd.com> Revert "drm/radeon/pm: autoswitch power state when in balanced mode" Alex Deucher <alexander.deucher(a)amd.com> drm/amd/powerplay/vega10: allow mclk switching with no displays Alex Deucher <alexander.deucher(a)amd.com> drm/amd/powerplay/smu7: allow mclk switching with no displays Ilia Mirkin <imirkin(a)alum.mit.edu> drm/nouveau: prefer XBGR2101010 for addfb ioctl Lukas Wunner <lukas(a)wunner.de> drm/amdgpu: Fix deadlock on runtime suspend Lukas Wunner <lukas(a)wunner.de> drm/radeon: Fix deadlock on runtime suspend Lukas Wunner <lukas(a)wunner.de> drm/nouveau: Fix deadlock on runtime suspend Lukas Wunner <lukas(a)wunner.de> drm: Allow determining if current task is output poll worker Lukas Wunner <lukas(a)wunner.de> workqueue: Allow retrieval of current task's work struct Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> drm/i915: Always call to intel_display_set_init_power() in resume_early. himanshu.madhani(a)cavium.com <himanshu.madhani(a)cavium.com> scsi: qla2xxx: Fix NULL pointer crash due to active timer for ABTS Bart Van Assche <bart.vanassche(a)wdc.com> scsi: core: Avoid that ATA error handling can trigger a kernel hang or oops Lionel Landwerlin <lionel.g.landwerlin(a)intel.com> drm/i915/perf: fix perf stream opening lock Stefan Brüns <stefan.bruens(a)rwth-aachen.de> drm/i915: Try EDID bitbanging on HDMI after failed read Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> drm/i915: Update watermark state correctly in sanitize_watermarks Ville Syrjälä <ville.syrjala(a)linux.intel.com> drm/i915: Disable DC states around GMBUS on GLK Chris Wilson <chris(a)chris-wilson.co.uk> drm/i915: Clear the in-use marker on execbuf failure Daniele Ceraolo Spurio <daniele.ceraolospurio(a)intel.com> drm/i915: Fix rsvd2 mask when out-fence is returned Fabrice Gasnier <fabrice.gasnier(a)st.com> regulator: stm32-vrefbuf: fix check on ready flag Davide Caratti <dcaratti(a)redhat.com> net/smc: fix NULL pointer dereference on sock_create_kern() error path Jason Gunthorpe <jgg(a)mellanox.com> IB/uverbs: Improve lockdep_check Leon Romanovsky <leonro(a)mellanox.com> RDMA/mlx5: Fix integer overflow while resizing CQ Leon Romanovsky <leonro(a)mellanox.com> RDMA/ucma: Check that user doesn't overflow QP state Leon Romanovsky <leonro(a)mellanox.com> RDMA/ucma: Limit possible option size Trond Myklebust <trond.myklebust(a)primarydata.com> NFS: Fix unstable write completion Trond Myklebust <trond.myklebust(a)primarydata.com> pNFS: Prevent the layout header refcount going to zero in pnfs_roc() Trond Myklebust <trond.myklebust(a)primarydata.com> NFS: Fix an incorrect type in struct nfs_direct_req himanshu.madhani(a)cavium.com <himanshu.madhani(a)cavium.com> scsi: qla2xxx: Fix memory leak in dual/target mode Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Fix system crash in qlt_plogi_ack_unref Giridhar Malavali <giridhar.malavali(a)cavium.com> scsi: qla2xxx: Remove aborting ELS IOCB call issued as part of timeout. Giridhar Malavali <giridhar.malavali(a)cavium.com> scsi: qla2xxx: Defer processing of GS IOCB calls Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Clear loop id after delete Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Fix scan state field for fcport Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Replace fcport alloc with qla2x00_alloc_fcport Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Fix abort command deadlock due to spinlock Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Fix PRLI state check Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Fix Relogin being triggered too fast Sawan Chandak <sawan.chandak(a)cavium.com> scsi: qla2xxx: Fix NPIV host cleanup in target mode Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Fix login state machine stuck at GPDB Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Serialize GPNID for multiple RSCN Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Retry switch command on time out Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Fix re-login for Nport Handle in use Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Skip IRQ affinity for Target QPairs Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Move session delete to driver work queue Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Fix gpnid error processing Quinn Tran <quinn.tran(a)cavium.com> scsi: qla2xxx: Fix system crash for Notify ack timeout handling Javier Martinez Canillas <javierm(a)redhat.com> tpm: only attempt to disable the LPC CLKRUN if is already enabled Arnd Bergmann <arnd(a)arndb.de> tpm: remove unused variables Javier Martinez Canillas <javierm(a)redhat.com> tpm: delete the TPM_TIS_CLK_ENABLE flag Azhar Shaikh <azhar.shaikh(a)intel.com> tpm: Keep CLKRUN enabled throughout the duration of transmit_cmd() Azhar Shaikh <azhar.shaikh(a)intel.com> tpm_tis: Move ilb_base_addr to tpm_tis_data Eric Dumazet <edumazet(a)google.com> netfilter: use skb_to_full_sk in ip6_route_me_harder Florian Westphal <fw(a)strlen.de> netfilter: ipv6: fix use-after-free Write in nf_nat_ipv6_manip_pkt Florian Westphal <fw(a)strlen.de> netfilter: bridge: ebt_among: add missing match size checks Florian Westphal <fw(a)strlen.de> netfilter: ebtables: CONFIG_COMPAT: don't trust userland offsets Eric Dumazet <edumazet(a)google.com> netfilter: IDLETIMER: be syzkaller friendly Paolo Abeni <pabeni(a)redhat.com> netfilter: nat: cope with negative port range Paolo Abeni <pabeni(a)redhat.com> netfilter: x_tables: fix missing timer initialization in xt_LED Eric Dumazet <edumazet(a)google.com> netfilter: xt_hashlimit: fix lock imbalance Cong Wang <xiyou.wangcong(a)gmail.com> netfilter: ipt_CLUSTERIP: fix a race condition of proc file creation Florian Westphal <fw(a)strlen.de> netfilter: add back stackpointer size checks Vinod Koul <vinod.koul(a)intel.com> ASoC: Intel: kbl: fix jack name Chintan Patel <chintan.m.patel(a)intel.com> ASoC: Intel: Skylake: Fix jack name format substitution Arnd Bergmann <arnd(a)arndb.de> ARM: omap2: hide omap3_save_secure_ram on non-OMAP3 builds Jerry Hoemann <jerry.hoemann(a)hpe.com> watchdog: hpwdt: Remove legacy NMI sourcing. Arnd Bergmann <arnd(a)arndb.de> watchdog: hpwdt: fix unused variable warning Jerry Hoemann <jerry.hoemann(a)hpe.com> watchdog: hpwdt: Check source of NMI Jerry Hoemann <jerry.hoemann(a)hpe.com> watchdog: hpwdt: SMBIOS check Masahiro Yamada <yamada.masahiro(a)socionext.com> kbuild: move "_all" target out of $(KBUILD_SRC) conditional ------------- Diffstat: .../devicetree/bindings/power/mti,mips-cpc.txt | 8 + Documentation/sphinx/kerneldoc.py | 3 +- MAINTAINERS | 1 + Makefile | 261 ++++++----- arch/arm/mach-omap2/omap-secure.c | 2 + arch/arm64/mm/mmu.c | 8 +- arch/mips/ath25/board.c | 2 + arch/mips/cavium-octeon/octeon-irq.c | 2 + arch/mips/kernel/mips-cpc.c | 13 + arch/mips/kernel/smp-bmips.c | 8 +- arch/s390/kvm/kvm-s390.c | 1 + arch/x86/Kconfig | 1 + arch/x86/Makefile | 7 +- arch/x86/entry/calling.h | 27 +- arch/x86/entry/entry_32.S | 3 +- arch/x86/entry/entry_64.S | 21 +- arch/x86/entry/entry_64_compat.S | 54 +-- arch/x86/include/asm/apm.h | 6 + arch/x86/include/asm/asm-prototypes.h | 3 - arch/x86/include/asm/cpufeatures.h | 1 + arch/x86/include/asm/efi.h | 17 +- arch/x86/include/asm/mmu_context.h | 1 + arch/x86/include/asm/nospec-branch.h | 138 +++++- arch/x86/include/asm/paravirt.h | 17 +- arch/x86/include/asm/paravirt_types.h | 5 +- arch/x86/include/asm/refcount.h | 4 +- arch/x86/include/asm/rmwcc.h | 16 +- arch/x86/include/asm/sections.h | 1 + arch/x86/include/uapi/asm/mce.h | 1 + arch/x86/kernel/cpu/bugs.c | 12 +- arch/x86/kernel/cpu/intel.c | 7 + arch/x86/kernel/cpu/mcheck/mce.c | 26 +- arch/x86/kernel/head_64.S | 2 + arch/x86/kernel/kprobes/core.c | 10 +- arch/x86/kernel/vmlinux.lds.S | 2 + arch/x86/lib/Makefile | 1 - arch/x86/lib/retpoline.S | 56 --- arch/x86/mm/fault.c | 4 - arch/x86/mm/mem_encrypt_boot.S | 2 + arch/x86/realmode/rm/trampoline_64.S | 2 +- drivers/block/loop.c | 2 +- drivers/char/tpm/tpm-interface.c | 6 + drivers/char/tpm/tpm_tis.c | 108 ----- drivers/char/tpm/tpm_tis_core.c | 121 ++++- drivers/char/tpm/tpm_tis_core.h | 16 + drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 3 + drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c | 58 ++- drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 13 +- drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 30 +- drivers/gpu/drm/amd/amdgpu/si.c | 22 +- drivers/gpu/drm/amd/amdgpu/si_dpm.c | 50 +- drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 18 +- drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c | 11 +- drivers/gpu/drm/drm_framebuffer.c | 4 + drivers/gpu/drm/drm_probe_helper.c | 20 + drivers/gpu/drm/i915/i915_drv.c | 2 + drivers/gpu/drm/i915/i915_gem_execbuffer.c | 4 +- drivers/gpu/drm/i915/i915_perf.c | 38 +- drivers/gpu/drm/i915/intel_display.c | 2 + drivers/gpu/drm/i915/intel_hdmi.c | 14 +- drivers/gpu/drm/i915/intel_runtime_pm.c | 1 + drivers/gpu/drm/nouveau/nouveau_connector.c | 18 +- drivers/gpu/drm/nouveau/nv50_display.c | 1 + drivers/gpu/drm/radeon/cik.c | 31 +- drivers/gpu/drm/radeon/radeon_connectors.c | 74 ++- drivers/gpu/drm/radeon/radeon_device.c | 4 + drivers/gpu/drm/radeon/radeon_pm.c | 6 +- drivers/infiniband/core/device.c | 6 +- drivers/infiniband/core/rdma_core.c | 12 +- drivers/infiniband/core/ucma.c | 6 + drivers/infiniband/hw/mlx5/cq.c | 7 +- drivers/infiniband/hw/mlx5/mr.c | 2 +- drivers/input/keyboard/matrix_keypad.c | 4 +- drivers/md/bcache/super.c | 27 +- drivers/md/dm-bufio.c | 16 +- drivers/pci/dwc/pcie-designware-host.c | 2 +- drivers/regulator/stm32-vrefbuf.c | 2 +- drivers/scsi/hosts.c | 3 - drivers/scsi/qla2xxx/qla_def.h | 49 +- drivers/scsi/qla2xxx/qla_gs.c | 72 ++- drivers/scsi/qla2xxx/qla_init.c | 64 ++- drivers/scsi/qla2xxx/qla_iocb.c | 13 - drivers/scsi/qla2xxx/qla_isr.c | 7 +- drivers/scsi/qla2xxx/qla_mbx.c | 3 +- drivers/scsi/qla2xxx/qla_mid.c | 42 +- drivers/scsi/qla2xxx/qla_os.c | 51 ++- drivers/scsi/qla2xxx/qla_target.c | 26 +- drivers/scsi/scsi_error.c | 5 +- drivers/scsi/scsi_lib.c | 2 + drivers/virtio/virtio_ring.c | 2 - drivers/watchdog/hpwdt.c | 507 +-------------------- fs/nfs/direct.c | 2 +- fs/nfs/pnfs.c | 13 +- fs/nfs/write.c | 83 ++-- include/drm/drm_crtc_helper.h | 1 + include/drm/drm_drv.h | 1 + include/linux/compiler-clang.h | 5 + include/linux/compiler-gcc.h | 4 + include/linux/init.h | 8 +- include/linux/nospec.h | 23 +- include/linux/tpm.h | 1 + include/linux/workqueue.h | 1 + include/scsi/scsi_cmnd.h | 3 + include/scsi/scsi_host.h | 2 - kernel/workqueue.c | 16 + lib/bug.c | 2 + mm/memblock.c | 10 +- mm/page_alloc.c | 9 +- net/bridge/netfilter/ebt_among.c | 21 +- net/bridge/netfilter/ebtables.c | 13 +- net/ipv4/netfilter/arp_tables.c | 4 + net/ipv4/netfilter/ip_tables.c | 7 +- net/ipv4/netfilter/ipt_CLUSTERIP.c | 12 +- net/ipv6/netfilter.c | 9 +- net/ipv6/netfilter/ip6_tables.c | 4 + net/ipv6/netfilter/nf_nat_l3proto_ipv6.c | 4 + net/netfilter/nf_nat_proto_common.c | 7 +- net/netfilter/xt_IDLETIMER.c | 9 +- net/netfilter/xt_LED.c | 12 +- net/netfilter/xt_hashlimit.c | 2 +- net/smc/af_smc.c | 4 +- scripts/Makefile.build | 8 + scripts/Makefile.lib | 8 +- sound/core/seq/seq_clientmgr.c | 21 +- sound/core/seq/seq_fifo.c | 2 +- sound/core/seq/seq_memory.c | 14 +- sound/core/seq/seq_memory.h | 3 +- sound/pci/hda/patch_conexant.c | 2 + sound/pci/hda/patch_realtek.c | 45 +- .../soc/intel/boards/kbl_rt5663_rt5514_max98927.c | 2 + tools/objtool/builtin-check.c | 6 +- tools/objtool/builtin-orc.c | 6 +- tools/objtool/builtin.h | 5 + tools/objtool/check.c | 93 +++- tools/objtool/check.h | 3 +- tools/perf/util/trigger.h | 9 +- 136 files changed, 1486 insertions(+), 1396 deletions(-)

6 years, 10 months

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patch "parport_pc: Add support for WCH CH382L PCI-E single parallel port" added to char-misc-next

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled parport_pc: Add support for WCH CH382L PCI-E single parallel port to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-next branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will also be merged in the next major kernel release during the merge window. If you have any questions about this process, please let me know. >From 823f7923833c6cc2b16e601546d607dcfb368004 Mon Sep 17 00:00:00 2001 From: Alexander Gerasiov <gq(a)redlab-i.ru> Date: Sun, 4 Feb 2018 02:50:22 +0300 Subject: parport_pc: Add support for WCH CH382L PCI-E single parallel port card. WCH CH382L is a PCI-E adapter with 1 parallel port. It is similair to CH382 but serial ports are not soldered on board. Detected as Serial controller: Device 1c00:3050 (rev 10) (prog-if 05 [16850]) Signed-off-by: Alexander Gerasiov <gq(a)redlab-i.ru> Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/parport/parport_pc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/parport/parport_pc.c b/drivers/parport/parport_pc.c index 489492b608cf..380916bff9e0 100644 --- a/drivers/parport/parport_pc.c +++ b/drivers/parport/parport_pc.c @@ -2646,6 +2646,7 @@ enum parport_pc_pci_cards { netmos_9901, netmos_9865, quatech_sppxp100, + wch_ch382l, }; @@ -2708,6 +2709,7 @@ static struct parport_pc_pci { /* netmos_9901 */ { 1, { { 0, -1 }, } }, /* netmos_9865 */ { 1, { { 0, -1 }, } }, /* quatech_sppxp100 */ { 1, { { 0, 1 }, } }, + /* wch_ch382l */ { 1, { { 2, -1 }, } }, }; static const struct pci_device_id parport_pc_pci_tbl[] = { @@ -2797,6 +2799,8 @@ static const struct pci_device_id parport_pc_pci_tbl[] = { /* Quatech SPPXP-100 Parallel port PCI ExpressCard */ { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_SPPXP_100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, quatech_sppxp100 }, + /* WCH CH382L PCI-E single parallel port card */ + { 0x1c00, 0x3050, 0x1c00, 0x3050, 0, 0, wch_ch382l }, { 0, } /* terminate list */ }; MODULE_DEVICE_TABLE(pci, parport_pc_pci_tbl); -- 2.16.2

6 years, 10 months

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patch "vt: change SGR 21 to follow the standards" added to tty-next

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled vt: change SGR 21 to follow the standards to my tty git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git in the tty-next branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will also be merged in the next major kernel release during the merge window. If you have any questions about this process, please let me know. >From 65d9982d7e523a1a8e7c9af012da0d166f72fc56 Mon Sep 17 00:00:00 2001 From: Mike Frysinger <vapier(a)chromium.org> Date: Mon, 29 Jan 2018 17:08:21 -0500 Subject: vt: change SGR 21 to follow the standards ECMA-48 [1] (aka ISO 6429) has defined SGR 21 as "doubly underlined" since at least March 1984. The Linux kernel has treated it as SGR 22 "normal intensity" since it was added in Linux-0.96b in June 1992. Before that, it was simply ignored. Other terminal emulators have either ignored it, or treat it as double underline now. xterm for example added support in its 304 release (May 2014) [2] where it was previously ignoring it. Changing this behavior shouldn't be an issue: - It isn't a named capability in ncurses's terminfo database, so no script is using libtinfo/libcurses to look this up, or using tput to query & output the right sequence. - Any script assuming SGR 21 will reset intensity in all terminals already do not work correctly on non-Linux VTs (including running under screen/tmux/etc...). - If someone has written a script that only runs in the Linux VT, and they're using SGR 21 (instead of SGR 22), the output should still be readable. imo it's important to change this as the Linux VT's non-conformance is sometimes used as an argument for other terminal emulators to not implement SGR 21 at all, or do so incorrectly. [1]: https://www.ecma-international.org/publications/standards/Ecma-048.htm [2]: https://github.com/ThomasDickey/xterm-snapshots/commit/2fd29cb98d214cb536bc… Signed-off-by: Mike Frysinger <vapier(a)chromium.org> Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/tty/vt/vt.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index 88b902c525d7..16c0fcd6904a 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -1354,6 +1354,11 @@ static void csi_m(struct vc_data *vc) case 3: vc->vc_italic = 1; break; + case 21: + /* + * No console drivers support double underline, so + * convert it to a single underline. + */ case 4: vc->vc_underline = 1; break; @@ -1389,7 +1394,6 @@ static void csi_m(struct vc_data *vc) vc->vc_disp_ctrl = 1; vc->vc_toggle_meta = 1; break; - case 21: case 22: vc->vc_intensity = 1; break; -- 2.16.2

6 years, 10 months

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[PATCH] PCI: dwc: Fix enumeration end when reaching root subordinate

by Fabio Estevam

From: Koen Vandeputte <koen.vandeputte(a)ncentric.com> commit fc110ebdd014dd1368c98e7685b47789c31fab42 upstream. The subordinate value indicates the highest bus number which can be reached downstream though a certain device. Commit a20c7f36bd3d ("PCI: Do not allocate more buses than available in parent") ensures that downstream devices cannot assign busnumbers higher than the upstream device subordinate number, which was indeed illogical. By default, dw_pcie_setup_rc() inits the Root Complex subordinate to a value of 0x01. Due to this combined with above commit, enumeration stops digging deeper downstream as soon as bus num 0x01 has been assigned, which is always the case for a bridge device. This results in all devices behind a bridge bus remaining undetected, as these would be connected to bus 0x02 or higher. Fix this by initializing the RC to a subordinate value of 0xff, which is not altering hardware behaviour in any way, but informs probing function pci_scan_bridge() later on which reads this value back from register. The following nasty errors during boot are also fixed by this: pci_bus 0000:02: busn_res: can not insert [bus 02-ff] under [bus 01] (conflicts with (null) [bus 01]) ... pci_bus 0000:03: [bus 03] partially hidden behind bridge 0000:01 [bus 01] ... pci_bus 0000:04: [bus 04] partially hidden behind bridge 0000:01 [bus 01] ... pci_bus 0000:05: [bus 05] partially hidden behind bridge 0000:01 [bus 01] pci_bus 0000:02: busn_res: [bus 02-ff] end is updated to 05 pci_bus 0000:02: busn_res: can not insert [bus 02-05] under [bus 01] (conflicts with (null) [bus 01]) pci_bus 0000:02: [bus 02-05] partially hidden behind bridge 0000:01 [bus 01] Fixes: a20c7f36bd3d ("PCI: Do not allocate more buses than available in parent") Tested-by: Niklas Cassel <niklas.cassel(a)axis.com> Tested-by: Fabio Estevam <fabio.estevam(a)nxp.com> Tested-by: Sebastian Reichel <sebastian.reichel(a)collabora.co.uk> Signed-off-by: Koen Vandeputte <koen.vandeputte(a)ncentric.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi(a)arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas(a)google.com> Reviewed-by: Mika Westerberg <mika.westerberg(a)linux.intel.com> Acked-by: Lucas Stach <l.stach(a)pengutronix.de> Cc: stable(a)vger.kernel.org Cc: Binghui Wang <wangbinghui(a)hisilicon.com> Cc: Jesper Nilsson <jesper.nilsson(a)axis.com> Cc: Jianguo Sun <sunjianguo1(a)huawei.com> Cc: Jingoo Han <jingoohan1(a)gmail.com> Cc: Kishon Vijay Abraham I <kishon(a)ti.com> Cc: Lucas Stach <l.stach(a)pengutronix.de> Cc: Mika Westerberg <mika.westerberg(a)linux.intel.com> Cc: Minghuan Lian <minghuan.Lian(a)freescale.com> Cc: Mingkai Hu <mingkai.hu(a)freescale.com> Cc: Murali Karicheri <m-karicheri2(a)ti.com> Cc: Pratyush Anand <pratyush.anand(a)gmail.com> Cc: Richard Zhu <hongxing.zhu(a)nxp.com> Cc: Roy Zang <tie-fei.zang(a)freescale.com> Cc: Shawn Guo <shawn.guo(a)linaro.org> Cc: Stanimir Varbanov <svarbanov(a)mm-sol.com> Cc: Thomas Petazzoni <thomas.petazzoni(a)free-electrons.com> Cc: Xiaowei Song <songxiaowei(a)hisilicon.com> Cc: Zhou Wang <wangzhou1(a)hisilicon.com> [fabio: adapted to the file location of 4.9 kernel] Signed-off-by: Fabio Estevam <fabio.estevam(a)nxp.com> --- drivers/pci/host/pcie-designware.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c index af8f6e9..b3a8715 100644 --- a/drivers/pci/host/pcie-designware.c +++ b/drivers/pci/host/pcie-designware.c @@ -861,7 +861,7 @@ void dw_pcie_setup_rc(struct pcie_port *pp) /* setup bus numbers */ val = dw_pcie_readl_rc(pp, PCI_PRIMARY_BUS); val &= 0xff000000; - val |= 0x00010100; + val |= 0x00ff0100; dw_pcie_writel_rc(pp, PCI_PRIMARY_BUS, val); /* setup command register */ -- 2.7.4

6 years, 10 months

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[PATCH v3 6/6] PCI: hv: fix 2 hang issues in hv_compose_msi_msg()

by Dexuan Cui

1. With the patch "x86/vector/msi: Switch to global reservation mode" (4900be8360), the recent v4.15 and newer kernels always hang for 1-vCPU Hyper-V VM with SR-IOV. This is because when we reach hv_compose_msi_msg() by request_irq() -> request_threaded_irq() -> __setup_irq()->irq_startup() -> __irq_startup() -> irq_domain_activate_irq() -> ... -> msi_domain_activate() -> ... -> hv_compose_msi_msg(), local irq is disabled in __setup_irq(). Fix this by polling the channel. 2. If the host is ejecting the VF device before we reach hv_compose_msi_msg(), in a UP VM, we can hang in hv_compose_msi_msg() forever, because at this time the host doesn't respond to the CREATE_INTERRUPT request. This issue also happens to old kernels like v4.14, v4.13, etc. Fix this by polling the channel for the PCI_EJECT message and hpdev->state, and by checking the PCI vendor ID. Note: actually the above issues also happen to a SMP VM, if "hbus->hdev->channel->target_cpu == smp_processor_id()" is true. Signed-off-by: Dexuan Cui <decui(a)microsoft.com> Tested-by: Adrian Suhov <v-adsuho(a)microsoft.com> Tested-by: Chris Valean <v-chvale(a)microsoft.com> Cc: stable(a)vger.kernel.org Cc: Stephen Hemminger <sthemmin(a)microsoft.com> Cc: K. Y. Srinivasan <kys(a)microsoft.com> Cc: Vitaly Kuznetsov <vkuznets(a)redhat.com> Cc: Jack Morgenstein <jackm(a)mellanox.com> --- drivers/pci/host/pci-hyperv.c | 58 ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 57 insertions(+), 1 deletion(-) diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/host/pci-hyperv.c index 265ba11e53e2..50cdefe3f6d3 100644 --- a/drivers/pci/host/pci-hyperv.c +++ b/drivers/pci/host/pci-hyperv.c @@ -521,6 +521,8 @@ struct hv_pci_compl { s32 completion_status; }; +static void hv_pci_onchannelcallback(void *context); + /** * hv_pci_generic_compl() - Invoked for a completion packet * @context: Set up by the sender of the packet. @@ -665,6 +667,31 @@ static void _hv_pcifront_read_config(struct hv_pci_dev *hpdev, int where, } } +static u16 hv_pcifront_get_vendor_id(struct hv_pci_dev *hpdev) +{ + u16 ret; + unsigned long flags; + void __iomem *addr = hpdev->hbus->cfg_addr + CFG_PAGE_OFFSET + + PCI_VENDOR_ID; + + spin_lock_irqsave(&hpdev->hbus->config_lock, flags); + + /* Choose the function to be read. (See comment above) */ + writel(hpdev->desc.win_slot.slot, hpdev->hbus->cfg_addr); + /* Make sure the function was chosen before we start reading. */ + mb(); + /* Read from that function's config space. */ + ret = readw(addr); + /* + * mb() is not required here, because the spin_unlock_irqrestore() + * is a barrier. + */ + + spin_unlock_irqrestore(&hpdev->hbus->config_lock, flags); + + return ret; +} + /** * _hv_pcifront_write_config() - Internal PCI config write * @hpdev: The PCI driver's representation of the device @@ -1107,8 +1134,37 @@ static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg) * Since this function is called with IRQ locks held, can't * do normal wait for completion; instead poll. */ - while (!try_wait_for_completion(&comp.comp_pkt.host_event)) + while (!try_wait_for_completion(&comp.comp_pkt.host_event)) { + /* 0xFFFF means an invalid PCI VENDOR ID. */ + if (hv_pcifront_get_vendor_id(hpdev) == 0xFFFF) { + dev_err_once(&hbus->hdev->device, + "the device has gone\n"); + goto free_int_desc; + } + + /* + * When the higher level interrupt code calls us with + * interrupt disabled, we must poll the channel by calling + * the channel callback directly when channel->target_cpu is + * the current CPU. When the higher level interrupt code + * calls us with interrupt enabled, let's add the + * local_bh_disable()/enable() to avoid race. + */ + local_bh_disable(); + + if (hbus->hdev->channel->target_cpu == smp_processor_id()) + hv_pci_onchannelcallback(hbus); + + local_bh_enable(); + + if (hpdev->state == hv_pcichild_ejecting) { + dev_err_once(&hbus->hdev->device, + "the device is being ejected\n"); + goto free_int_desc; + } + udelay(100); + } if (comp.comp_pkt.completion_status < 0) { dev_err(&hbus->hdev->device, -- 2.7.4

6 years, 10 months

4
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patch "vt: change SGR 21 to follow the standards" added to tty-testing

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled vt: change SGR 21 to follow the standards to my tty git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git in the tty-testing branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will be merged to the tty-next branch sometime soon, after it passes testing, and the merge window is open. If you have any questions about this process, please let me know. >From 65d9982d7e523a1a8e7c9af012da0d166f72fc56 Mon Sep 17 00:00:00 2001 From: Mike Frysinger <vapier(a)chromium.org> Date: Mon, 29 Jan 2018 17:08:21 -0500 Subject: vt: change SGR 21 to follow the standards ECMA-48 [1] (aka ISO 6429) has defined SGR 21 as "doubly underlined" since at least March 1984. The Linux kernel has treated it as SGR 22 "normal intensity" since it was added in Linux-0.96b in June 1992. Before that, it was simply ignored. Other terminal emulators have either ignored it, or treat it as double underline now. xterm for example added support in its 304 release (May 2014) [2] where it was previously ignoring it. Changing this behavior shouldn't be an issue: - It isn't a named capability in ncurses's terminfo database, so no script is using libtinfo/libcurses to look this up, or using tput to query & output the right sequence. - Any script assuming SGR 21 will reset intensity in all terminals already do not work correctly on non-Linux VTs (including running under screen/tmux/etc...). - If someone has written a script that only runs in the Linux VT, and they're using SGR 21 (instead of SGR 22), the output should still be readable. imo it's important to change this as the Linux VT's non-conformance is sometimes used as an argument for other terminal emulators to not implement SGR 21 at all, or do so incorrectly. [1]: https://www.ecma-international.org/publications/standards/Ecma-048.htm [2]: https://github.com/ThomasDickey/xterm-snapshots/commit/2fd29cb98d214cb536bc… Signed-off-by: Mike Frysinger <vapier(a)chromium.org> Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/tty/vt/vt.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index 88b902c525d7..16c0fcd6904a 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -1354,6 +1354,11 @@ static void csi_m(struct vc_data *vc) case 3: vc->vc_italic = 1; break; + case 21: + /* + * No console drivers support double underline, so + * convert it to a single underline. + */ case 4: vc->vc_underline = 1; break; @@ -1389,7 +1394,6 @@ static void csi_m(struct vc_data *vc) vc->vc_disp_ctrl = 1; vc->vc_toggle_meta = 1; break; - case 21: case 22: vc->vc_intensity = 1; break; -- 2.16.2

6 years, 10 months

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