- 28 Mar, 2023 23 commits
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Nicholas Piggin authored
On a 16-socket 192-core POWER8 system, the context_switch1_threads benchmark from will-it-scale (see earlier changelog), upstream can achieve a rate of about 1 million context switches per second, due to contention on the mm refcount. 64s meets the prerequisites for CONFIG_MMU_LAZY_TLB_SHOOTDOWN, so enable the option. This increases the above benchmark to 118 million context switches per second. This generates 314 additional IPI interrupts on a 144 CPU system doing a kernel compile, which is in the noise in terms of kernel cycles. Link: https://lkml.kernel.org/r/20230203071837.1136453-6-npiggin@gmail.comSigned-off-by:
Nicholas Piggin <npiggin@gmail.com> Acked-by:
Linus Torvalds <torvalds@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nadav Amit <nadav.amit@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Will Deacon <will@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org>
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Nicholas Piggin authored
On big systems, the mm refcount can become highly contented when doing a lot of context switching with threaded applications. user<->idle switch is one of the important cases. Abandoning lazy tlb entirely slows this switching down quite a bit in the common uncontended case, so that is not viable. Implement a scheme where lazy tlb mm references do not contribute to the refcount, instead they get explicitly removed when the refcount reaches zero. The final mmdrop() sends IPIs to all CPUs in the mm_cpumask and they switch away from this mm to init_mm if it was being used as the lazy tlb mm. Enabling the shoot lazies option therefore requires that the arch ensures that mm_cpumask contains all CPUs that could possibly be using mm. A DEBUG_VM option IPIs every CPU in the system after this to ensure there are no references remaining before the mm is freed. Shootdown IPIs cost could be an issue, but they have not been observed to be a serious problem with this scheme, because short-lived processes tend not to migrate CPUs much, therefore they don't get much chance to leave lazy tlb mm references on remote CPUs. There are a lot of options to reduce them if necessary, described in comments. The near-worst-case can be benchmarked with will-it-scale: context_switch1_threads -t $(($(nproc) / 2)) This will create nproc threads (nproc / 2 switching pairs) all sharing the same mm that spread over all CPUs so each CPU does thread->idle->thread switching. [ Rik came up with basically the same idea a few years ago, so credit to him for that. ] Link: https://lore.kernel.org/linux-mm/20230118080011.2258375-1-npiggin@gmail.com/ Link: https://lore.kernel.org/all/20180728215357.3249-11-riel@surriel.com/ Link: https://lkml.kernel.org/r/20230203071837.1136453-5-npiggin@gmail.comSigned-off-by:
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Nicholas Piggin authored
Add CONFIG_MMU_TLB_REFCOUNT which enables refcounting of the lazy tlb mm when it is context switched. This can be disabled by architectures that don't require this refcounting if they clean up lazy tlb mms when the last refcount is dropped. Currently this is always enabled, so the patch introduces no functional change. Link: https://lkml.kernel.org/r/20230203071837.1136453-4-npiggin@gmail.comSigned-off-by:
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Nicholas Piggin authored
Add explicit _lazy_tlb annotated functions for lazy tlb mm refcounting. This makes the lazy tlb mm references more obvious, and allows the refcounting scheme to be modified in later changes. There is no functional change with this patch. Link: https://lkml.kernel.org/r/20230203071837.1136453-3-npiggin@gmail.comSigned-off-by:
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Nicholas Piggin authored
Patch series "shoot lazy tlbs (lazy tlb refcount scalability improvement)", v7. This series improves scalability of context switching between user and kernel threads on large systems with a threaded process spread across a lot of CPUs. Discussion of v6 here: https://lore.kernel.org/linux-mm/20230118080011.2258375-1-npiggin@gmail.com/ This patch (of 5): Remove the special case avoiding refcounting when the mm to be used is the same as the kernel thread's active (lazy tlb) mm. kthread_use_mm() should not be such a performance critical path that this matters much. This simplifies a later change to lazy tlb mm refcounting. Link: https://lkml.kernel.org/r/20230203071837.1136453-1-npiggin@gmail.com Link: https://lkml.kernel.org/r/20230203071837.1136453-2-npiggin@gmail.comSigned-off-by:
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Taejoon Song authored
The worst-case scenario on finding same element pages is that almost all elements are same at the first glance but only last few elements are different. Since the same element tends to be grouped from the beginning of the pages, if we check the first element with the last element before looping through all elements, we might have some chances to quickly detect non-same element pages. 1. Test is done under LG webOS TV (64-bit arch) 2. Dump the swap-out pages (~819200 pages) 3. Analyze the pages with simple test script which counts the iteration number and measures the speed at off-line Under 64-bit arch, the worst iteration count is PAGE_SIZE / 8 bytes = 512. The speed is based on the time to consume page_same_filled() function only. The result, on average, is listed as below: Num of Iter Speed(MB/s) Looping-Forward (Orig) 38 99265 Looping-Backward 36 102725 Last-element-check (This Patch) 33 125072 The result shows that the average iteration count decreases by 13% and the speed increases by 25% with this patch. This patch does not increase the overall time complexity, though. I also ran simpler version which uses backward loop. Just looping backward also makes some improvement, but less than this patch. A similar change has already been made to zram in 90f82cbf ("zram: try to avoid worst-case scenario on same element pages"). Link: https://lkml.kernel.org/r/20230205190036.1730134-1-taejoon.song@lge.comSigned-off-by:Taejoon Song <taejoon.song@lge.com> Reviewed-by:
Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Dan Streetman <ddstreet@ieee.org> Cc: Seth Jennings <sjenning@redhat.com> Cc: Taejoon Song <taejoon.song@lge.com> Cc: Vitaly Wool <vitaly.wool@konsulko.com> Cc: Minchan Kim <minchan@kernel.org> Cc: <yjay.kim@lge.com> Signed-off-by:
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T.J. Alumbaugh authored
This patch improves the design doc. Specifically, 1. add a section for the per-memcg mm_struct list, and 2. add a section for the PID controller. Link: https://lkml.kernel.org/r/20230214035445.1250139-2-talumbau@google.comSigned-off-by:
T.J. Alumbaugh <talumbau@google.com> Cc: Yu Zhao <yuzhao@google.com> Signed-off-by:
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T.J. Alumbaugh authored
This patch cleans up the sysfs code. Specifically, 1. use sysfs_emit(), 2. use __ATTR_RW(), and 3. constify multi-gen LRU struct attribute_group. Link: https://lkml.kernel.org/r/20230214035445.1250139-1-talumbau@google.comSigned-off-by:
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Ma Wupeng authored
Syzbot reports a warning in untrack_pfn(). Digging into the root we found that this is due to memory allocation failure in pmd_alloc_one. And this failure is produced due to failslab. In copy_page_range(), memory alloaction for pmd failed. During the error handling process in copy_page_range(), mmput() is called to remove all vmas. While untrack_pfn this empty pfn, warning happens. Here's a simplified flow: dup_mm dup_mmap copy_page_range copy_p4d_range copy_pud_range copy_pmd_range pmd_alloc __pmd_alloc pmd_alloc_one page = alloc_pages(gfp, 0); if (!page) return NULL; mmput exit_mmap unmap_vmas unmap_single_vma untrack_pfn follow_phys WARN_ON_ONCE(1); Since this vma is not generate successfully, we can clear flag VM_PAT. In this case, untrack_pfn() will not be called while cleaning this vma. Function untrack_pfn_moved() has also been renamed to fit the new logic. Link: https://lkml.kernel.org/r/20230217025615.1595558-1-mawupeng1@huawei.comSigned-off-by:Ma Wupeng <mawupeng1@huawei.com> Reported-by: <syzbot+5f488e922d047d8f00cc@syzkaller.appspotmail.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@suse.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Toshi Kani <toshi.kani@hp.com> Signed-off-by:
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Muhammad Usama Anjum authored
mwriteprotect_range() errors out if [start, end) doesn't fall in one VMA. We are facing a use case where multiple VMAs are present in one range of interest. For example, the following pseudocode reproduces the error which we are trying to fix: - Allocate memory of size 16 pages with PROT_NONE with mmap - Register userfaultfd - Change protection of the first half (1 to 8 pages) of memory to PROT_READ | PROT_WRITE. This breaks the memory area in two VMAs. - Now UFFDIO_WRITEPROTECT_MODE_WP on the whole memory of 16 pages errors out. This is a simple use case where user may or may not know if the memory area has been divided into multiple VMAs. We need an implementation which doesn't disrupt the already present users. So keeping things simple, stop going over all the VMAs if any one of the VMA hasn't been registered in WP mode. While at it, remove the un-needed error check as well. [akpm@linux-foundation.org: s/VM_WARN_ON_ONCE/VM_WARN_ONCE/ to fix build] Link: https://lkml.kernel.org/r/20230217105558.832710-1-usama.anjum@collabora.comSigned-off-by:
Muhammad Usama Anjum <usama.anjum@collabora.com> Acked-by:
Peter Xu <peterx@redhat.com> Acked-by:
David Hildenbrand <david@redhat.com> Reported-by:
Paul Gofman <pgofman@codeweavers.com> Signed-off-by:
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Vlastimil Babka authored
Historically, we have performed sanity checks on all struct pages being allocated or freed, making sure they have no unexpected page flags or certain field values. This can detect insufficient cleanup and some cases of use-after-free, although on its own it can't always identify the culprit. The result is a warning and the "bad page" being leaked. The checks do need some cpu cycles, so in 4.7 with commits 479f854a ("mm, page_alloc: defer debugging checks of pages allocated from the PCP") and 4db7548c ("mm, page_alloc: defer debugging checks of freed pages until a PCP drain") they were no longer performed in the hot paths when allocating and freeing from pcplists, but only when pcplists are bypassed, refilled or drained. For debugging purposes, with CONFIG_DEBUG_VM enabled the checks were instead still done in the hot paths and not when refilling or draining pcplists. With 4462b32c ("mm, page_alloc: more extensive free page checking with debug_pagealloc"), enabling debug_pagealloc also moved the sanity checks back to hot pahs. When both debug_pagealloc and CONFIG_DEBUG_VM are enabled, the checks are done both in hotpaths and pcplist refill/drain. Even though the non-debug default today might seem to be a sensible tradeoff between overhead and ability to detect bad pages, on closer look it's arguably not. As most allocations go through the pcplists, catching any bad pages when refilling or draining pcplists has only a small chance, insufficient for debugging or serious hardening purposes. On the other hand the cost of the checks is concentrated in the already expensive drain/refill batching operations, and those are done under the often contended zone lock. That was recently identified as an issue for page allocation and the zone lock contention reduced by moving the checks outside of the locked section with a patch "mm: reduce lock contention of pcp buffer refill", but the cost of the checks is still visible compared to their removal [1]. In the pcplist draining path free_pcppages_bulk() the checks are still done under zone->lock. Thus, remove the checks from pcplist refill and drain paths completely. Introduce a static key check_pages_enabled to control checks during page allocation a freeing (whether pcplist is used or bypassed). The static key is enabled if either is true: - kernel is built with CONFIG_DEBUG_VM=y (debugging) - debug_pagealloc or page poisoning is boot-time enabled (debugging) - init_on_alloc or init_on_free is boot-time enabled (hardening) The resulting user visible changes: - no checks when draining/refilling pcplists - less overhead, with likely no practical reduction of ability to catch bad pages - no checks when bypassing pcplists in default config (no debugging/hardening) - less overhead etc. as above - on typical hardened kernels [2], checks are now performed on each page allocation/free (previously only when bypassing/draining/refilling pcplists) - the init_on_alloc/init_on_free enabled should be sufficient indication for preferring more costly alloc/free operations for hardening purposes and we shouldn't need to introduce another toggle - code (various wrappers) removal and simplification [1] https://lore.kernel.org/all/68ba44d8-6899-c018-dcb3-36f3a96e6bea@sra.uni-hannover.de/ [2] https://lore.kernel.org/all/63ebc499.a70a0220.9ac51.29ea@mx.google.com/ [akpm@linux-foundation.org: coding-style cleanups] [akpm@linux-foundation.org: make check_pages_enabled static] Link: https://lkml.kernel.org/r/20230216095131.17336-1-vbabka@suse.czReported-by:
Alexander Halbuer <halbuer@sra.uni-hannover.de> Reported-by:
Vlastimil Babka <vbabka@suse.cz> Cc: Kees Cook <keescook@chromium.org> Cc: Mel Gorman <mgorman@techsingularity.net> Signed-off-by:
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Alexander Halbuer authored
rmqueue_bulk() batches the allocation of multiple elements to refill the per-CPU buffers into a single hold of the zone lock. Each element is allocated and checked using check_pcp_refill(). The check touches every related struct page which is especially expensive for higher order allocations (huge pages). This patch reduces the time holding the lock by moving the check out of the critical section similar to rmqueue_buddy() which allocates a single element. Measurements of parallel allocation-heavy workloads show a reduction of the average huge page allocation latency of 50 percent for two cores and nearly 90 percent for 24 cores. Link: https://lkml.kernel.org/r/20230201162549.68384-1-halbuer@sra.uni-hannover.deSigned-off-by:
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Thomas Weißschuh authored
Since commit ee6d3dd4 ("driver core: make kobj_type constant.") the driver core allows the usage of const struct kobj_type. Take advantage of this to constify the structure definition to prevent modification at runtime. Link: https://lkml.kernel.org/r/20230220-kobj_type-mm-cma-v1-1-45996cff1a81@weissschuh.netSigned-off-by:
Thomas Weißschuh <linux@weissschuh.net> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Peter Xu authored
If memory charge failed, instead of returning the hpage but with an error, allow the function to cleanup the folio properly, which is normally what a function should do in this case - either return successfully, or return with no side effect of partial runs with an indicated error. This will also avoid the caller calling mem_cgroup_uncharge() unnecessarily with either anon or shmem path (even if it's safe to do so). Link: https://lkml.kernel.org/r/20230222195247.791227-1-peterx@redhat.comSigned-off-by:
David Stevens <stevensd@chromium.org> Acked-by:
Johannes Weiner <hannes@cmpxchg.org> Reviewed-by:
Yang Shi <shy828301@gmail.com> Reviewed-by:
Zach O'Keefe <zokeefe@google.com> Signed-off-by:
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Muchun Song authored
The check of IS_ENABLED(CONFIG_PROC_SYSCTL) is unnecessary since register_sysctl_init() will be empty in this case. So, there is no warnings after removing the check. Link: https://lkml.kernel.org/r/20230223065947.64134-1-songmuchun@bytedance.comSigned-off-by:
Muchun Song <songmuchun@bytedance.com> Reviewed-by:
Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by:
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Florian Fainelli authored
Link: https://lkml.kernel.org/r/20230324130737.3360169-1-f.fainelli@gmail.comSigned-off-by:
Florian Fainelli <f.fainelli@gmail.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Colin Ian King <colin.i.king@gmail.com> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Kirill Tkhai <tkhai@ya.ru> Cc: Konrad Dybcio <konrad.dybcio@linaro.org> Cc: Leonard Crestez <cdleonard@gmail.com> Cc: Qais Yousef <qyousef@layalina.io> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: Vasily Averin <vasily.averin@linux.dev> Signed-off-by:
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Muchun Song authored
The struct pages could be discontiguous when the kfence pool is allocated via alloc_contig_pages() with CONFIG_SPARSEMEM and !CONFIG_SPARSEMEM_VMEMMAP. This may result in setting PG_slab and memcg_data to a arbitrary address (may be not used as a struct page), which in the worst case might corrupt the kernel. So the iteration should use nth_page(). Link: https://lkml.kernel.org/r/20230323025003.94447-1-songmuchun@bytedance.com Fixes: 0ce20dd8 ("mm: add Kernel Electric-Fence infrastructure") Signed-off-by:
Marco Elver <elver@google.com> Reviewed-by:
Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Jann Horn <jannh@google.com> Cc: SeongJae Park <sjpark@amazon.de> Cc: <stable@vger.kernel.org> Signed-off-by:
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Muchun Song authored
It does not reset PG_slab and memcg_data when KFENCE fails to initialize kfence pool at runtime. It is reporting a "Bad page state" message when kfence pool is freed to buddy. The checking of whether it is a compound head page seems unnecessary since we already guarantee this when allocating kfence pool. Remove the check to simplify the code. Link: https://lkml.kernel.org/r/20230320030059.20189-1-songmuchun@bytedance.com Fixes: 0ce20dd8 ("mm: add Kernel Electric-Fence infrastructure") Signed-off-by:
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Shiyang Ruan authored
In an dedupe comparison iter loop, the length of iomap_iter decreases because it implies the remaining length after each iteration. The dedupe command will fail with -EIO if the range is larger than one page size and not aligned to the page size. Also report warning in dmesg: [ 4338.498374] ------------[ cut here ]------------ [ 4338.498689] WARNING: CPU: 3 PID: 1415645 at fs/iomap/iter.c:16 ... The compare function should use the min length of the current iters, not the total length. Link: https://lkml.kernel.org/r/1679469958-2-1-git-send-email-ruansy.fnst@fujitsu.com Fixes: 0e79e373 ("fsdax: dedupe: iter two files at the same time") Signed-off-by:
Shiyang Ruan <ruansy.fnst@fujitsu.com> Reviewed-by:
Darrick J. Wong <djwong@kernel.org> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Jan Kara <jack@suse.cz> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: <stable@vger.kernel.org> Signed-off-by:
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Shiyang Ruan authored
unshare copies data from source to destination. But if the source is HOLE or UNWRITTEN extents, we should zero the destination, otherwise the HOLE or UNWRITTEN part will be user-visible old data of the new allocated extent. Found by running generic/649 while mounting with -o dax=always on pmem. Link: https://lkml.kernel.org/r/1679483469-2-1-git-send-email-ruansy.fnst@fujitsu.com Fixes: d984648e ("fsdax,xfs: port unshare to fsdax") Signed-off-by:
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Tiezhu Yang authored
We can see the following definition in kernel/locking/lockdep_internals.h: #define STACK_TRACE_HASH_SIZE (1 << CONFIG_LOCKDEP_STACK_TRACE_HASH_BITS) CONFIG_LOCKDEP_STACK_TRACE_HASH_BITS is related with STACK_TRACE_HASH_SIZE instead of MAX_STACK_TRACE_ENTRIES, fix it. Link: https://lkml.kernel.org/r/1679380508-20830-1-git-send-email-yangtiezhu@loongson.cn Fixes: 5dc33592 ("lockdep: Allow tuning tracing capacity constants.") Signed-off-by:
Tiezhu Yang <yangtiezhu@loongson.cn> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Signed-off-by:
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ye xingchen authored
The path for SCHED_DEBUG is /sys/kernel/debug/sched. So, SCHED_DEBUG should depend on DEBUG_FS, not PROC_FS. Link: https://lkml.kernel.org/r/202301291110098787982@zte.com.cnSigned-off-by:
ye xingchen <ye.xingchen@zte.com.cn> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zhaoyang Huang <zhaoyang.huang@unisoc.com> Signed-off-by:
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Leonard Göhrs authored
My very first kernel commit: e4e1d47c ("ALSA: ppc: remove redundant checks in PS3 driver probe") was sent with the umlaut in my last name transcribed (Göhrs -> Goehrs). Add a mailmap entry so all my commits use the same name. Link: https://lkml.kernel.org/r/20230321145525.1317230-1-l.goehrs@pengutronix.deSigned-off-by:
Leonard Göhrs <l.goehrs@pengutronix.de> Acked-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by:
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- 26 Mar, 2023 7 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds authored
Pull USB / Thunderbolt driver fixes from Greg KH: "Here are a small set of USB and Thunderbolt driver fixes for reported problems and a documentation update, for 6.3-rc4. Included in here are: - documentation update for uvc gadget driver - small thunderbolt driver fixes - cdns3 driver fixes - dwc3 driver fixes - dwc2 driver fixes - chipidea driver fixes - typec driver fixes - onboard_usb_hub device id updates - quirk updates All of these have been in linux-next with no reported problems" * tag 'usb-6.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (30 commits) usb: dwc2: fix a race, don't power off/on phy for dual-role mode usb: dwc2: fix a devres leak in hw_enable upon suspend resume usb: chipidea: core: fix possible concurrent when switch role usb: chipdea: core: fix return -EINVAL if request role is the same with current role thunderbolt: Rename shadowed variables bit to interrupt_bit and auto_clear_bit thunderbolt: Disable interrupt auto clear for rings thunderbolt: Use const qualifier for `ring_interrupt_index` usb: gadget: Use correct endianness of the wLength field for WebUSB uas: Add US_FL_NO_REPORT_OPCODES for JMicron JMS583Gen 2 usb: cdnsp: changes PCI Device ID to fix conflict with CNDS3 driver usb: cdns3: Fix issue with using incorrect PCI device function usb: cdnsp: Fixes issue with redundant Status Stage MAINTAINERS: make me a reviewer of USB/IP thunderbolt: Use scale field when allocating USB3 bandwidth thunderbolt: Limit USB3 bandwidth of certain Intel USB4 host routers thunderbolt: Call tb_check_quirks() after initializing adapters thunderbolt: Add missing UNSET_INBOUND_SBTX for retimer access thunderbolt: Fix memory leak in margining usb: dwc2: drd: fix inconsistent mode if role-switch-default-mode="host" docs: usb: Add documentation for the UVC Gadget ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fix from Borislav Petkov: - Fix a corner case where vruntime of a task is not being sanitized * tag 'sched_urgent_for_v6.3_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Sanitize vruntime of entity being migrated
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fix from Borislav Petkov: - Properly clear perf event status tracking in the AMD perf event overflow handler * tag 'perf_urgent_for_v6.3_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/amd/core: Always clear status for idx
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull core fixes from Borislav Petkov: - Do the delayed RCU wakeup for kthreads in the proper order so that former doesn't get ignored - A noinstr warning fix * tag 'core_urgent_for_v6.3_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: entry/rcu: Check TIF_RESCHED _after_ delayed RCU wake-up entry: Fix noinstr warning in __enter_from_user_mode()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Borislav Petkov: - Add a AMX ptrace self test - Prevent a false-positive warning when retrieving the (invalid) address of dynamic FPU features in their init state which are not saved in init_fpstate at all - Randomize per-CPU entry areas only when KASLR is enabled * tag 'x86_urgent_for_v6.3_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: selftests/x86/amx: Add a ptrace test x86/fpu/xstate: Prevent false-positive warning in __copy_xstate_uabi_buf() x86/mm: Do not shuffle CPU entry areas without KASLR
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull cifs client fixes from Steve French: "Twelve cifs/smb3 client fixes (most also for stable) - forced umount fix - fix for two perf regressions - reconnect fixes - small debugging improvements - multichannel fixes" * tag 'smb3-client-fixes-6.3-rc3' of git://git.samba.org/sfrench/cifs-2.6: smb3: fix unusable share after force unmount failure cifs: fix dentry lookups in directory handle cache smb3: lower default deferred close timeout to address perf regression cifs: fix missing unload_nls() in smb2_reconnect() cifs: avoid race conditions with parallel reconnects cifs: append path to open_enter trace event cifs: print session id while listing open files cifs: dump pending mids for all channels in DebugData cifs: empty interface list when server doesn't support query interfaces cifs: do not poll server interfaces too regularly cifs: lock chan_lock outside match_session cifs: check only tcon status on tcon related functions
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- 25 Mar, 2023 7 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/cel/linuxLinus Torvalds authored
Pull nfsd fix from Chuck Lever: - Fix a crash when using NFS with krb5p * tag 'nfsd-6.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: SUNRPC: Fix a crash in gss_krb5_checksum()
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git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds authored
Pull yet more xfs bug fixes from Darrick Wong: "The first bugfix addresses a longstanding problem where we use the wrong file mapping cursors when trying to compute the speculative preallocation quantity. This has been causing sporadic crashes when alwayscow mode is engaged. The other two fixes correct minor problems in more recent changes. - Fix the new allocator tracepoints because git am mismerged the changes such that the trace_XXX got rebased to be in function YYY instead of XXX - Ensure that the perag AGFL_RESET state is consistent with whatever we've just read off the disk - Fix a bug where we used the wrong iext cursor during a write begin" * tag 'xfs-6.3-fixes-7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: xfs: fix mismerged tracepoints xfs: clear incore AGFL_RESET state if it's not needed xfs: pass the correct cursor to xfs_iomap_prealloc_size -
git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds authored
Pull xfs percpu counter fixes from Darrick Wong: "We discovered a filesystem summary counter corruption problem that was traced to cpu hot-remove racing with the call to percpu_counter_sum that sets the free block count in the superblock when writing it to disk. The root cause is that percpu_counter_sum doesn't cull from dying cpus and hence misses those counter values if the cpu shutdown hooks have not yet run to merge the values. I'm hoping this is a fairly painless fix to the problem, since the dying cpu mask should generally be empty. It's been in for-next for a week without any complaints from the bots. - Fix a race in the percpu counters summation code where the summation failed to add in the values for any CPUs that were dying but not yet dead. This fixes some minor discrepancies and incorrect assertions when running generic/650" * tag 'xfs-6.3-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: pcpcntr: remove percpu_counter_sum_all() fork: remove use of percpu_counter_sum_all pcpcntrs: fix dying cpu summation race cpumask: introduce for_each_cpu_or -
git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds authored
Pull xfs fixes from Darrick Wong: "This batch started with some debugging enhancements to the new allocator refactoring that we put in 6.3-rc1 to assist developers in rebasing their dev branches. As for more serious code changes -- there's a bug fix to make the lockless allocator scan the whole filesystem before resorting to the locking allocator. We're also adding a selftest for the venerable directory/xattr hash function to make sure that it produces consistent results so that we can address any fallout as soon as possible. - Add a few debugging assertions so that people (me) trying to port code to the new allocator functions don't mess up the caller requirements - Relax some overly cautious lock ordering enforcement in the new allocator code, which means that file allocations will locklessly scan for the best space they can get before backing off to the traditional lock-and-really-get-it behavior - Add tracepoints to make it easier to trace the xfs allocator behavior - Actually test the dir/xattr hash algorithm to make sure it produces consistent results across all the platforms XFS supports" * tag 'xfs-6.3-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: xfs: test dir/attr hash when loading module xfs: add tracepoints for each of the externally visible allocators xfs: walk all AGs if TRYLOCK passed to xfs_alloc_vextent_iterate_ags xfs: try to idiot-proof the allocators -
Linus Torvalds authored
Merge tag 'hwmon-for-v6.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon fixes from Guenter Roeck: - it87: Fix voltage scaling for chips with 10.9mV ADCs - xgene: Fix ioremap and memremap leak - peci/cputemp: Fix miscalculated DTS temperature for SKX - hwmon core: fix potential sensor registration failure with thermal subsystem if of_node is missing * tag 'hwmon-for-v6.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon (it87): Fix voltage scaling for chips with 10.9mV ADCs hwmon: (xgene) Fix ioremap and memremap leak hwmon: fix potential sensor registration fail if of_node is missing hwmon: (peci/cputemp) Fix miscalculated DTS for SKX
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Linus Torvalds authored
Merge tag 'mm-hotfixes-stable-2023-03-24-17-09' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "21 hotfixes, 8 of which are cc:stable. 11 are for MM, the remainder are for other subsystems" * tag 'mm-hotfixes-stable-2023-03-24-17-09' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (21 commits) mm: mmap: remove newline at the end of the trace mailmap: add entries for Richard Leitner kcsan: avoid passing -g for test kfence: avoid passing -g for test mm: kfence: fix using kfence_metadata without initialization in show_object() lib: dhry: fix unstable smp_processor_id(_) usage mailmap: add entry for Enric Balletbo i Serra mailmap: map Sai Prakash Ranjan's old address to his current one mailmap: map Rajendra Nayak's old address to his current one Revert "kasan: drop skip_kasan_poison variable in free_pages_prepare" mailmap: add entry for Tobias Klauser kasan, powerpc: don't rename memintrinsics if compiler adds prefixes mm/ksm: fix race with VMA iteration and mm_struct teardown kselftest: vm: fix unused variable warning mm: fix error handling for map_deny_write_exec mm: deduplicate error handling for map_deny_write_exec checksyscalls: ignore fstat to silence build warning on LoongArch nilfs2: fix kernel-infoleak in nilfs_ioctl_wrap_copy() test_maple_tree: add more testing for mas_empty_area() maple_tree: fix mas_skip_node() end slot detection ...
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git://git.samba.org/ksmbdLinus Torvalds authored
Pull ksmbd server fixes from Steve French: - return less confusing messages on unsupported dialects (STATUS_NOT_SUPPORTED instead of I/O error) - fix for overly frequent inactive session termination - fix refcount leak - fix bounds check problems found by static checkers - fix to advertise named stream support correctly - Fix AES256 signing bug when connected to from MacOS * tag '6.3-rc3-ksmbd-smb3-server-fixes' of git://git.samba.org/ksmbd: ksmbd: return unsupported error on smb1 mount ksmbd: return STATUS_NOT_SUPPORTED on unsupported smb2.0 dialect ksmbd: don't terminate inactive sessions after a few seconds ksmbd: fix possible refcount leak in smb2_open() ksmbd: add low bound validation to FSCTL_QUERY_ALLOCATED_RANGES ksmbd: add low bound validation to FSCTL_SET_ZERO_DATA ksmbd: set FILE_NAMED_STREAMS attribute in FS_ATTRIBUTE_INFORMATION ksmbd: fix wrong signingkey creation when encryption is AES256
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- 24 Mar, 2023 3 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/socLinus Torvalds authored
Pull ARM SoC fixes from Arnd Bergmann: "As usual, most of the bug fixes address issues in the devicetree files, and out of these, most are for the Qualcomm and NXP platforms, including: - A missing 'reserved-memory' property on LG G Watch R that is needed to prevent clashing with firmware - Annotations for cache coherency on multiple machines - Corrections for pinctrl, regulator, clock, iommu and power domain properties for i.MX and Qualcomm to correctly reflect the hardware settings - Firmware file names on multiple machines SA8540P Ride board - An incompatible change to the qcom vadc driver requires adding individual labels - Fix EQoS PHY reset GPIO by dropping the deprecated/wrong property and switch to the new bindings. - A fix for PCI bus address translation Tegra194 and Tegra234. There are also a couple of device driver fixes, addressing: - A race condition in the amdtee driver - A performance regression in the Qualcomm 'llcc' driver - An unitialized variable use NXP i.MX 'weim' driver - Error handling issues in Qualcomm 'rmtfs', and 'scm' drivers and the Arm scmi firmware driver" * tag 'arm-fixes-6.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (48 commits) arm64: dts: qcom: sc8280xp-x13s: mark bob regulator as always-on arm64: dts: qcom: sc8280xp-x13s: mark s12b regulator as always-on arm64: dts: qcom: sc8280xp-x13s: mark s10b regulator as always-on arm64: dts: qcom: sc8280xp-x13s: mark s11b regulator as always-on arm64: dts: imx93: add missing #address-cells and #size-cells to i2c nodes bus: imx-weim: fix branch condition evaluates to a garbage value arm64: dts: imx8mn: specify #sound-dai-cells for SAI nodes ARM: dts: imx6sl: tolino-shine2hd: fix usbotg1 pinctrl ARM: dts: imx6sll: e60k02: fix usbotg1 pinctrl ARM: dts: imx6sll: e70k02: fix usbotg1 pinctrl arm64: dts: imx93: Fix eqos properties arm64: dts: imx8mp: Fix LCDIF2 node clock order arm64: dts: imx8mm-nitrogen-r2: fix WM8960 clock name arm64: dts: imx8dxl-evk: Fix eqos phy reset gpio firmware: qcom: scm: fix bogus irq error at probe arm64: dts: qcom: sm8550: Mark UFS controller as cache coherent arm64: dts: qcom: sa8540p-ride: correct name of remoteproc_nsp0 firmware arm64: dts: qcom: sm8450: Mark UFS controller as cache coherent arm64: dts: qcom: sm8350: Mark UFS controller as cache coherent arm64: dts: qcom: sm8550: fix LPASS pinctrl slew base address ... -
git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supplyLinus Torvalds authored
Pull power supply fixes from Sebastian Reichel: - rk817: Fix compiler warning - cros_usbpd-charger: Fix excessive error printing - axp288_fuel_gauge: handle platform_get_irq error - bq24190 and da9150: Fix race condition in remove path * tag 'for-v6.3-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: power: supply: da9150: Fix use after free bug in da9150_charger_remove due to race condition power: supply: bq24190: Fix use after free bug in bq24190_remove due to race condition power: supply: axp288_fuel_gauge: Added check for negative values power: supply: cros_usbpd: reclassify "default case!" as debug power: supply: rk817: Fix unsigned comparison with less than zero
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git://anongit.freedesktop.org/drm/drmLinus Torvalds authored
Pull drm fixes from Daniel Vetter: - usual pile of fixes for amdgpu & i915 - probe error handling fixes for meson, lt8912b bridge - the host1x patch from Arnd - panel-orientation fix for Lenovo Book X90F * tag 'drm-fixes-2023-03-24' of git://anongit.freedesktop.org/drm/drm: (23 commits) gpu: host1x: fix uninitialized variable use drm/amd/display: Set dcn32 caps.seamless_odm drm/amd/display: fix wrong index used in dccg32_set_dpstreamclk drm/amdgpu/nv: Apply ASPM quirk on Intel ADL + AMD Navi drm/amd/display: remove outdated 8bpc comments drm/amdgpu/gfx: set cg flags to enter/exit safe mode drm/amdgpu: Force signal hw_fences that are embedded in non-sched jobs drm/amdgpu: add mes resume when do gfx post soft reset drm/amdgpu: skip ASIC reset for APUs when go to S4 drm/amdgpu: reposition the gpu reset checking for reuse drm/bridge: lt8912b: return EPROBE_DEFER if bridge is not found drm/meson: fix missing component unbind on bind errors drm: panel-orientation-quirks: Add quirk for Lenovo Yoga Book X90F Revert "drm/i915/hwmon: Enable PL1 power limit" drm/i915: Update vblank timestamping stuff on seamless M/N change drm/i915: Fix format for perf_limit_reasons drm/i915/gt: perform uc late init after probe error injection drm/i915/active: Fix missing debug object activation drm/i915/guc: Fix missing ecodes drm/i915/mtl: Disable MC6 for MTL A step ...
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