- 04 Feb, 2022 10 commits
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Shuah Khan authored
With this change, userfaultfd fails to build with undefined reference swap() error: userfaultfd.c: In function `userfaultfd_stress': userfaultfd.c:1530:17: warning: implicit declaration of function `swap'; did you mean `swab'? [-Wimplicit-function-declaration] 1530 | swap(area_src, area_dst); | ^~~~ | swab /usr/bin/ld: /tmp/ccDGOAdV.o: in function `userfaultfd_stress': userfaultfd.c:(.text+0x549e): undefined reference to `swap' /usr/bin/ld: userfaultfd.c:(.text+0x54bc): undefined reference to `swap' collect2: error: ld returned 1 exit status Revert the commit to fix the problem. Link: https://lkml.kernel.org/r/20220202003340.87195-1-skhan@linuxfoundation.org Fixes: 2c769ed7 ("tools/testing/selftests/vm/userfaultfd.c: use swap() to make code cleaner") Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Minghao Chi <chi.minghao@zte.com.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Mike Rapoport authored
Use my @kernel.org address Link: https://lkml.kernel.org/r/20220203090324.3701774-1-rppt@kernel.orgSigned-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Lang Yu authored
When using devm_request_free_mem_region() and devm_memremap_pages() to add ZONE_DEVICE memory, if requested free mem region's end pfn were huge(e.g., 0x400000000), the node_end_pfn() will be also huge (see move_pfn_range_to_zone()). Thus it creates a huge hole between node_start_pfn() and node_end_pfn(). We found on some AMD APUs, amdkfd requested such a free mem region and created a huge hole. In such a case, following code snippet was just doing busy test_bit() looping on the huge hole. for (pfn = start_pfn; pfn < end_pfn; pfn++) { struct page *page = pfn_to_online_page(pfn); if (!page) continue; ... } So we got a soft lockup: watchdog: BUG: soft lockup - CPU#6 stuck for 26s! [bash:1221] CPU: 6 PID: 1221 Comm: bash Not tainted 5.15.0-custom #1 RIP: 0010:pfn_to_online_page+0x5/0xd0 Call Trace: ? kmemleak_scan+0x16a/0x440 kmemleak_write+0x306/0x3a0 ? common_file_perm+0x72/0x170 full_proxy_write+0x5c/0x90 vfs_write+0xb9/0x260 ksys_write+0x67/0xe0 __x64_sys_write+0x1a/0x20 do_syscall_64+0x3b/0xc0 entry_SYSCALL_64_after_hwframe+0x44/0xae I did some tests with the patch. (1) amdgpu module unloaded before the patch: real 0m0.976s user 0m0.000s sys 0m0.968s after the patch: real 0m0.981s user 0m0.000s sys 0m0.973s (2) amdgpu module loaded before the patch: real 0m35.365s user 0m0.000s sys 0m35.354s after the patch: real 0m1.049s user 0m0.000s sys 0m1.042s Link: https://lkml.kernel.org/r/20211108140029.721144-1-lang.yu@amd.comSigned-off-by: Lang Yu <lang.yu@amd.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Minghao Chi authored
We can't call kvfree() with a spin lock held, so defer it. Link: https://lkml.kernel.org/r/20211223031207.556189-1-chi.minghao@zte.com.cn Fixes: fc37a3b8 ("[PATCH] ipc sem: use kvmalloc for sem_undo allocation") Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Reviewed-by: Shakeel Butt <shakeelb@google.com> Reviewed-by: Manfred Spraul <manfred@colorfullife.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Yang Guang <cgel.zte@gmail.com> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Bhaskar Chowdhury <unixbhaskar@gmail.com> Cc: Vasily Averin <vvs@virtuozzo.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Mike Rapoport authored
Since commit 974b9b2c ("mm: consolidate pte_index() and pte_offset_*() definitions") pte_index is a static inline and there is no define for it that can be recognized by the preprocessor. As a result, vm_insert_pages() uses slower loop over vm_insert_page() instead of insert_pages() that amortizes the cost of spinlock operations when inserting multiple pages. Link: https://lkml.kernel.org/r/20220111145457.20748-1-rppt@kernel.org Fixes: 974b9b2c ("mm: consolidate pte_index() and pte_offset_*() definitions") Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Reported-by: Christian Dietrich <stettberger@dokucode.de> Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pasha Tatashin authored
syzbot detected a case where the page table counters were not properly updated. syzkaller login: ------------[ cut here ]------------ kernel BUG at mm/page_table_check.c:162! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3099 Comm: pasha Not tainted 5.16.0+ #48 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIO4 RIP: 0010:__page_table_check_zero+0x159/0x1a0 Call Trace: free_pcp_prepare+0x3be/0xaa0 free_unref_page+0x1c/0x650 free_compound_page+0xec/0x130 free_transhuge_page+0x1be/0x260 __put_compound_page+0x90/0xd0 release_pages+0x54c/0x1060 __pagevec_release+0x7c/0x110 shmem_undo_range+0x85e/0x1250 ... The repro involved having a huge page that is split due to uprobe event temporarily replacing one of the pages in the huge page. Later the huge page was combined again, but the counters were off, as the PTE level was not properly updated. Make sure that when PMD is cleared and prior to freeing the level the PTEs are updated. Link: https://lkml.kernel.org/r/20220131203249.2832273-5-pasha.tatashin@soleen.com Fixes: df4e817b ("mm: page table check") Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Greg Thelen <gthelen@google.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Mike Rapoport <rppt@kernel.org> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Paul Turner <pjt@google.com> Cc: Wei Xu <weixugc@google.com> Cc: Will Deacon <will@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pasha Tatashin authored
Unify the code that flushes, clears pmd entry, and frees the PTE table level into a new function collapse_and_free_pmd(). This cleanup is useful as in the next patch we will add another call to this function to iterate through PTE prior to freeing the level for page table check. Link: https://lkml.kernel.org/r/20220131203249.2832273-4-pasha.tatashin@soleen.comSigned-off-by: Pasha Tatashin <pasha.tatashin@soleen.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Greg Thelen <gthelen@google.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Mike Rapoport <rppt@kernel.org> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Paul Turner <pjt@google.com> Cc: Wei Xu <weixugc@google.com> Cc: Will Deacon <will@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pasha Tatashin authored
For consistency, use "unsigned long" for all page counters. Also, reduce code duplication by calling __page_table_check_*_clear() from __page_table_check_*_set() functions. Link: https://lkml.kernel.org/r/20220131203249.2832273-3-pasha.tatashin@soleen.comSigned-off-by: Pasha Tatashin <pasha.tatashin@soleen.com> Reviewed-by: Wei Xu <weixugc@google.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Greg Thelen <gthelen@google.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Mike Rapoport <rppt@kernel.org> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Paul Turner <pjt@google.com> Cc: Will Deacon <will@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pasha Tatashin authored
Patch series "page table check fixes and cleanups", v5. This patch (of 4): The pte entry that is used in pte_advanced_tests() is never removed from the page table at the end of the test. The issue is detected by page_table_check, to repro compile kernel with the following configs: CONFIG_DEBUG_VM_PGTABLE=y CONFIG_PAGE_TABLE_CHECK=y CONFIG_PAGE_TABLE_CHECK_ENFORCED=y During the boot the following BUG is printed: debug_vm_pgtable: [debug_vm_pgtable ]: Validating architecture page table helpers ------------[ cut here ]------------ kernel BUG at mm/page_table_check.c:162! invalid opcode: 0000 [#1] PREEMPT SMP PTI CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.16.0-11413-g2c271fe7 #3 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014 ... The entry should be properly removed from the page table before the page is released to the free list. Link: https://lkml.kernel.org/r/20220131203249.2832273-1-pasha.tatashin@soleen.com Link: https://lkml.kernel.org/r/20220131203249.2832273-2-pasha.tatashin@soleen.com Fixes: a5c3b9ff ("mm/debug_vm_pgtable: add tests validating advanced arch page table helpers") Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Tested-by: Zi Yan <ziy@nvidia.com> Acked-by: David Rientjes <rientjes@google.com> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Paul Turner <pjt@google.com> Cc: Wei Xu <weixugc@google.com> Cc: Greg Thelen <gthelen@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Will Deacon <will@kernel.org> Cc: Mike Rapoport <rppt@kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Hugh Dickins <hughd@google.com> Cc: <stable@vger.kernel.org> [5.9+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Chen Wandun authored
This reverts commit 721fb891. Commit 721fb891 ("mm/page_isolation: unset migratetype directly for non Buddy page") will result memory that should in buddy disappear by mistake. move_freepages_block moves all pages in pageblock instead of pages indicated by input parameter, so if input pages is not in buddy but other pages in pageblock is in buddy, it will result in page out of control. Link: https://lkml.kernel.org/r/20220126024436.13921-1-chenwandun@huawei.com Fixes: 721fb891 ("mm/page_isolation: unset migratetype directly for non Buddy page") Signed-off-by: Chen Wandun <chenwandun@huawei.com> Reported-by: "kernelci.org bot" <bot@kernelci.org> Acked-by: David Hildenbrand <david@redhat.com> Tested-by: Dong Aisheng <aisheng.dong@nxp.com> Tested-by: Francesco Dolcini <francesco.dolcini@toradex.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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- 03 Feb, 2022 6 commits
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Mickaël Salaün authored
The move of proc_dointvec_minmax_sysadmin() from kernel/sysctl.c to kernel/printk/sysctl.c introduced an incorrect __user attribute to the buffer argument. I spotted this change in [1] as well as the kernel test robot. Revert this change to please sparse: kernel/printk/sysctl.c:20:51: warning: incorrect type in argument 3 (different address spaces) kernel/printk/sysctl.c:20:51: expected void * kernel/printk/sysctl.c:20:51: got void [noderef] __user *buffer Fixes: faaa357a ("printk: move printk sysctl to printk/sysctl.c") Link: https://lore.kernel.org/r/20220104155024.48023-2-mic@digikod.net [1] Reported-by: kernel test robot <lkp@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Xiaoming Ni <nixiaoming@huawei.com> Signed-off-by: Mickaël Salaün <mic@linux.microsoft.com> Link: https://lore.kernel.org/r/20220203145029.272640-1-mic@digikod.netSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Igor Pylypiv authored
This reverts commit 774a1221. We need to finish all async code before the module init sequence is done. In the reverted commit the PF_USED_ASYNC flag was added to mark a thread that called async_schedule(). Then the PF_USED_ASYNC flag was used to determine whether or not async_synchronize_full() needs to be invoked. This works when modprobe thread is calling async_schedule(), but it does not work if module dispatches init code to a worker thread which then calls async_schedule(). For example, PCI driver probing is invoked from a worker thread based on a node where device is attached: if (cpu < nr_cpu_ids) error = work_on_cpu(cpu, local_pci_probe, &ddi); else error = local_pci_probe(&ddi); We end up in a situation where a worker thread gets the PF_USED_ASYNC flag set instead of the modprobe thread. As a result, async_synchronize_full() is not invoked and modprobe completes without waiting for the async code to finish. The issue was discovered while loading the pm80xx driver: (scsi_mod.scan=async) modprobe pm80xx worker ... do_init_module() ... pci_call_probe() work_on_cpu(local_pci_probe) local_pci_probe() pm8001_pci_probe() scsi_scan_host() async_schedule() worker->flags |= PF_USED_ASYNC; ... < return from worker > ... if (current->flags & PF_USED_ASYNC) <--- false async_synchronize_full(); Commit 21c3c5d2 ("block: don't request module during elevator init") fixed the deadlock issue which the reverted commit 774a1221 ("module, async: async_synchronize_full() on module init iff async is used") tried to fix. Since commit 0fdff3ec ("async, kmod: warn on synchronous request_module() from async workers") synchronous module loading from async is not allowed. Given that the original deadlock issue is fixed and it is no longer allowed to call synchronous request_module() from async we can remove PF_USED_ASYNC flag to make module init consistently invoke async_synchronize_full() unless async module probe is requested. Signed-off-by: Igor Pylypiv <ipylypiv@google.com> Reviewed-by: Changyuan Lyu <changyuanl@google.com> Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroupLinus Torvalds authored
Pull cgroup fixes from Tejun Heo: - Eric's fix for a long standing cgroup1 permission issue where it only checks for uid 0 instead of CAP which inadvertently allows unprivileged userns roots to modify release_agent userhelper - Fixes for the fallout from Waiman's recent cpuset work * 'for-5.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup/cpuset: Fix "suspicious RCU usage" lockdep warning cgroup-v1: Require capabilities to set release_agent cpuset: Fix the bug that subpart_cpus updated wrongly in update_cpumask() cgroup/cpuset: Make child cpusets restrict parents on v1 hierarchy
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Waiman Long authored
It was found that a "suspicious RCU usage" lockdep warning was issued with the rcu_read_lock() call in update_sibling_cpumasks(). It is because the update_cpumasks_hier() function may sleep. So we have to release the RCU lock, call update_cpumasks_hier() and reacquire it afterward. Also add a percpu_rwsem_assert_held() in update_sibling_cpumasks() instead of stating that in the comment. Fixes: 4716909c ("cpuset: Track cpusets that use parent's effective_cpus") Signed-off-by: Waiman Long <longman@redhat.com> Tested-by: Phil Auld <pauld@redhat.com> Reviewed-by: Phil Auld <pauld@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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John Hubbard authored
This reverts commit 54d516b1 That commit did a refactoring that effectively combined fast and slow gup paths (again). And that was again incorrect, for two reasons: a) Fast gup and slow gup get reference counts on pages in different ways and with different goals: see Linus' writeup in commit cd1adf1b ("Revert "mm/gup: remove try_get_page(), call try_get_compound_head() directly""), and b) try_grab_compound_head() also has a specific check for "FOLL_LONGTERM && !is_pinned(page)", that assumes that the caller can fall back to slow gup. This resulted in new failures, as recently report by Will McVicker [1]. But (a) has problems too, even though they may not have been reported yet. So just revert this. Link: https://lore.kernel.org/r/20220131203504.3458775-1-willmcvicker@google.com [1] Fixes: 54d516b1 ("mm/gup: small refactoring: simplify try_grab_page()") Reported-and-tested-by: Will McVicker <willmcvicker@google.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Minchan Kim <minchan@google.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: stable@vger.kernel.org # 5.15 Signed-off-by: John Hubbard <jhubbard@nvidia.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linuxLinus Torvalds authored
Pull MIPS fixes from Thomas Bogendoerfer: - fix missed change for PTR->PTR_WD conversion - kernel-doc fixes * tag 'mips-fixes-5.17_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: KVM: fix vz.c kernel-doc notation MIPS: octeon: Fix missed PTR->PTR_WD conversion
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- 02 Feb, 2022 4 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/cel/linuxLinus Torvalds authored
Pull nfsd fixes from Chuck Lever: "Notable bug fixes: - Ensure SM_NOTIFY doesn't crash the NFS server host - Ensure NLM locks are cleaned up after client reboot - Fix a leak of internal NFSv4 lease information" * tag 'nfsd-5.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: nfsd: nfsd4_setclientid_confirm mistakenly expires confirmed client. lockd: fix failure to cleanup client locks lockd: fix server crash on reboot of client holding lock
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fsLinus Torvalds authored
Pull fanotify fix from Jan Kara: "Fix stale file descriptor in copy_event_to_user" * tag 'fsnotify_for_v5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: fanotify: Fix stale file descriptor in copy_event_to_user()
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Linus Torvalds authored
Merge tag 'linux-kselftest-kunit-fixes-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull KUnit fixes from Shuah Khan: "A single fix to an error seen on qemu due to a missing import" * tag 'linux-kselftest-kunit-fixes-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: tool: Import missing importlib.abc
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlLinus Torvalds authored
Pull pin control fixes from Linus Walleij: "Most interesting and urgent is the Intel stuff affecting Chromebooks and laptops. - Fix up group name building on the Intel Thunderbay - Fix interrupt problems on the Intel Cherryview - Fix some pin data on the Sunxi H616 - Fix up the CONFIG_PINCTRL_ST Kconfig sort order as noted during the merge window - Fix an unexpected interrupt problem on the Intel Sunrisepoint - Fix a glitch when updating IRQ flags on all Intel pin controllers - Revert a Zynqmp patch to unify the pin naming, let's find some better solution - Fix some error paths in the Broadcom BCM2835 driver - Fix a Kconfig problem pertaining to the BCM63XX drivers - Fix the regmap support in the Microchip SGPIO driver" * tag 'pinctrl-v5.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: pinctrl: microchip-sgpio: Fix support for regmap pinctrl: bcm63xx: fix unmet dependency on REGMAP for GPIO_REGMAP pinctrl: bcm2835: Fix a few error paths pinctrl: zynqmp: Revert "Unify pin naming" pinctrl: intel: Fix a glitch when updating IRQ flags on a preconfigured line pinctrl: intel: fix unexpected interrupt pinctrl: Place correctly CONFIG_PINCTRL_ST in the Makefile pinctrl: sunxi: Fix H616 I2S3 pin data pinctrl: cherryview: Trigger hwirq0 for interrupt-lines without a mapping pinctrl: thunderbay: rework loops looking for groups names pinctrl: thunderbay: comment process of building functions a bit
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- 01 Feb, 2022 12 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spiLinus Torvalds authored
Pull spi fixes from Mark Brown: "There are quite a few fixes that have accumilated since the merge window here, all driver specific and none super urgent, plus a new device ID for the Rockchip driver" * tag 'spi-fix-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: spi: mediatek: Avoid NULL pointer crash in interrupt spi: dt-bindings: Fix 'reg' child node schema spi: bcm-qspi: check for valid cs before applying chip select spi: uniphier: fix reference count leak in uniphier_spi_probe() spi: meson-spicc: add IRQ check in meson_spicc_probe spi: uniphier: Fix a bug that doesn't point to private data correctly spi: change clk_disable_unprepare to clk_unprepare spi: spi-rockchip: Add rk3568-spi compatible spi: stm32: make SPI_MASTER_MUST_TX flags only specific to STM32F4 spi: stm32: remove inexistant variables in struct stm32_spi_cfg comment spi: stm32-qspi: Update spi registering
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Linus Torvalds authored
Merge tag 'regulator-fix-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator fixes from Mark Brown: "A couple of very minor fixes for the regulator framework, nothing at all urgent here" * tag 'regulator-fix-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: MAX20086: add gpio/consumer.h regulator: max20086: fix error code in max20086_parse_regulators_dt()
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Linus Torvalds authored
Merge tag 'platform-drivers-x86-v5.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver fixes from Hans de Goede: "This consists of various build- and bug-fixes as well as a few hardware-id additions. Highlights: - Bunch of fixes for the new x86-android-tablets module - Misc other fixes - A couple of hw-id additions" * tag 'platform-drivers-x86-v5.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: platform/x86: thinkpad_acpi: Fix incorrect use of platform profile on AMD platforms platform/x86: amd-pmc: Correct usage of SMU version platform/x86: asus-tf103c-dock: Make 2 global structs static platform/x86: amd-pmc: Make amd_pmc_stb_debugfs_fops static platform/x86: ISST: Fix possible circular locking dependency detected platform/x86: intel_crystal_cove_charger: Fix IRQ masking / unmasking platform/x86: thinkpad_acpi: Add quirk for ThinkPads without a fan platform/x86: touchscreen_dmi: Add info for the RWC NANOTE P8 AY07J 2-in-1 platform/surface: Reinstate platform dependency platform/x86: x86-android-tablets: Trivial typo fix for MODULE_AUTHOR platform/x86: x86-android-tablets: Fix the buttons on CZC P10T tablet platform/x86: x86-android-tablets: Constify the gpiod_lookup_tables arrays platform/x86: x86-android-tablets: Add an init() callback to struct x86_dev_info platform/x86: x86-android-tablets: Add support for disabling ACPI _AEI handlers platform/x86: x86-android-tablets: Correct crystal_cove_charger module name
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfsLinus Torvalds authored
Pull overlayfs fixes from Miklos Szeredi: "Fix a regression introduced in v5.15, affecting copy up of files with 'noatime' or 'sync' attributes to a tmpfs upper layer" * tag 'ovl-fixes-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: ovl: don't fail copy up if no fileattr support on upper ovl: fix NULL pointer dereference in copy up warning
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Christian Brauner authored
At least one of the addresses will stop functioning after February. Signed-off-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
Merge tag 'unicode-for-next-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/krisman/unicode Pull unicode cleanup from Gabriel Krisman Bertazi: "A fix from Christoph Hellwig merging the CONFIG_UNICODE_UTF8_DATA into the previous CONFIG_UNICODE. It is -rc material since we don't want to expose the former symbol on 5.17. This has been living on linux-next for the past week" * tag 'unicode-for-next-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/krisman/unicode: unicode: clean up the Kconfig symbol confusion
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git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/auditLinus Torvalds authored
Pull audit fix from Paul Moore: "A single audit patch to fix problems relating to audit queuing and system responsiveness when "audit=1" is specified on the kernel command line and the audit daemon is SIGSTOP'd for an extended period of time" * tag 'audit-pr-20220131' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit: audit: improve audit queue handling when "audit=1" on cmdline
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Eric W. Biederman authored
The cgroup release_agent is called with call_usermodehelper. The function call_usermodehelper starts the release_agent with a full set fo capabilities. Therefore require capabilities when setting the release_agaent. Reported-by: Tabitha Sable <tabitha.c.sable@gmail.com> Tested-by: Tabitha Sable <tabitha.c.sable@gmail.com> Fixes: 81a6a5cd ("Task Control Groups: automatic userspace notification of idle cgroups") Cc: stable@vger.kernel.org # v2.6.24+ Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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Mark Pearson authored
Lenovo AMD based platforms have been offering platform_profiles but they are not working correctly. This is because the mode we are using on the Intel platforms (MMC) is not available on the AMD platforms. This commit adds checking of the functional capabilities returned by the BIOS to confirm if MMC is supported or not. Profiles will not be available if the platform is not MMC capable. I'm investigating and working on an alternative for AMD platforms but that is still work-in-progress. Signed-off-by: Mark Pearson <markpearson@lenovo.com> Link: https://lore.kernel.org/r/20220127190358.4078-1-markpearson@lenovo.comReviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Dan Carpenter authored
This code calls fd_install() which gives the userspace access to the fd. Then if copy_info_records_to_user() fails it calls put_unused_fd(fd) but that will not release it and leads to a stale entry in the file descriptor table. Generally you can't trust the fd after a call to fd_install(). The fix is to delay the fd_install() until everything else has succeeded. Fortunately it requires CAP_SYS_ADMIN to reach this code so the security impact is less. Fixes: f644bc44 ("fanotify: fix copy_event_to_user() fid error clean up") Link: https://lore.kernel.org/r/20220128195656.GA26981@kiliSigned-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Mathias Krause <minipli@grsecurity.net> Signed-off-by: Jan Kara <jack@suse.cz>
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Randy Dunlap authored
Fix all kernel-doc warnings in mips/kvm/vz.c as reported by the kernel test robot: arch/mips/kvm/vz.c:471: warning: Function parameter or member 'out_compare' not described in '_kvm_vz_save_htimer' arch/mips/kvm/vz.c:471: warning: Function parameter or member 'out_cause' not described in '_kvm_vz_save_htimer' arch/mips/kvm/vz.c:471: warning: Excess function parameter 'compare' description in '_kvm_vz_save_htimer' arch/mips/kvm/vz.c:471: warning: Excess function parameter 'cause' description in '_kvm_vz_save_htimer' arch/mips/kvm/vz.c:1551: warning: No description found for return value of 'kvm_trap_vz_handle_cop_unusable' arch/mips/kvm/vz.c:1552: warning: expecting prototype for kvm_trap_vz_handle_cop_unusuable(). Prototype was for kvm_trap_vz_handle_cop_unusable() instead arch/mips/kvm/vz.c:1597: warning: No description found for return value of 'kvm_trap_vz_handle_msa_disabled' Fixes: c992a4f6 ("KVM: MIPS: Implement VZ support") Fixes: f4474d50 ("KVM: MIPS/VZ: Support hardware guest timer") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: kernel test robot <lkp@intel.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: linux-mips@vger.kernel.org Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com> Cc: James Hogan <jhogan@kernel.org> Cc: kvm@vger.kernel.org Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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Thomas Bogendoerfer authored
Fixes: fa62f39d ("MIPS: Fix build error due to PTR used in more places") Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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- 31 Jan, 2022 2 commits
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Benjamin Gaignard authored
In some case, like after a transfer timeout, master->cur_msg pointer is NULL which led to a kernel crash when trying to use master->cur_msg->spi. mtk_spi_can_dma(), pointed by master->can_dma, doesn't use this parameter avoid the problem by setting NULL as second parameter. Fixes: a568231f ("spi: mediatek: Add spi bus for Mediatek MT8173") Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com> Link: https://lore.kernel.org/r/20220131141708.888710-1-benjamin.gaignard@collabora.comSigned-off-by: Mark Brown <broonie@kernel.org>
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Horatiu Vultur authored
Initially the driver accessed the registers using u32 __iomem but then in the blamed commit it changed it to use regmap. The problem is that now the offset of the registers is not calculated anymore at word offset but at byte offset. Therefore make sure to multiply the offset with word size. Acked-by: Steen Hegelund <Steen.Hegelund@microchip.com> Reviewed-by: Colin Foster <colin.foster@in-advantage.com> Fixes: 2afbbab4 ("pinctrl: microchip-sgpio: update to support regmap") Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20220131085201.307031-1-horatiu.vultur@microchip.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>
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- 30 Jan, 2022 6 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fixes from Borislav Petkov: - Drop an unused private data field in the AIC driver - Various fixes to the realtek-rtl driver - Make the GICv3 ITS driver compile again in !SMP configurations - Force reset of the GICv3 ITSs at probe time to avoid issues during kexec - Yet another kfree/bitmap_free conversion - Various DT updates (Renesas, SiFive) * tag 'irq_urgent_for_v5.17_rc2_p2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: dt-bindings: interrupt-controller: sifive,plic: Group interrupt tuples dt-bindings: interrupt-controller: sifive,plic: Fix number of interrupts dt-bindings: irqchip: renesas-irqc: Add R-Car V3U support irqchip/gic-v3-its: Reset each ITS's BASERn register before probe irqchip/gic-v3-its: Fix build for !SMP irqchip/loongson-pch-ms: Use bitmap_free() to free bitmap irqchip/realtek-rtl: Service all pending interrupts irqchip/realtek-rtl: Fix off-by-one in routing irqchip/realtek-rtl: Map control data to virq irqchip/apple-aic: Drop unused ipi_hwirq field
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Borislav Petkov: - Prevent accesses to the per-CPU cgroup context list from another CPU except the one it belongs to, to avoid list corruption - Make sure parent events are always woken up to avoid indefinite hangs in the traced workload * tag 'perf_urgent_for_v5.17_rc2_p2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/core: Fix cgroup event list management perf: Always wake the parent event
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fix from Borislav Petkov: "Make sure the membarrier-rseq fence commands are part of the reported set when querying membarrier(2) commands through MEMBARRIER_CMD_QUERY" * tag 'sched_urgent_for_v5.17_rc2_p2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/membarrier: Fix membarrier-rseq fence command missing from query bitmask
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Borislav Petkov: - Add another Intel CPU model to the list of CPUs supporting the processor inventory unique number - Allow writing to MCE thresholding sysfs files again - a previous change had accidentally disabled it and no one noticed. Goes to show how much is this stuff used * tag 'x86_urgent_for_v5.17_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Add Xeon Icelake-D to list of CPUs that support PPIN x86/MCE/AMD: Allow thresholding interface updates after init
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Linus Torvalds authored
Merge misc fixes from Andrew Morton: "12 patches. Subsystems affected by this patch series: sysctl, binfmt, ia64, mm (memory-failure, folios, kasan, and psi), selftests, and ocfs2" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: ocfs2: fix a deadlock when commit trans jbd2: export jbd2_journal_[grab|put]_journal_head psi: fix "defined but not used" warnings when CONFIG_PROC_FS=n psi: fix "no previous prototype" warnings when CONFIG_CGROUPS=n mm, kasan: use compare-exchange operation to set KASAN page tag kasan: test: fix compatibility with FORTIFY_SOURCE tools/testing/scatterlist: add missing defines mm: page->mapping folio->mapping should have the same offset memory-failure: fetch compound_head after pgmap_pfn_valid() ia64: make IA64_MCA_RECOVERY bool instead of tristate binfmt_misc: fix crash when load/unload module include/linux/sysctl.h: fix register_sysctl_mount_point() return type
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