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2020-07-24Merge branch 'fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs into master Pull xtensa csum regression fix from Al Viro: "Max Filippov caught a breakage introduced in xtensa this cycle by the csum_and_copy_..._user() series. Cut'n'paste from the wrong source - the check that belongs in csum_and_copy_to_user() ended up both there and in csum_and_copy_from_user()" * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: xtensa: fix access check in csum_and_copy_from_user
2020-07-24Merge tag 'arm64-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux into master Pull arm64 fix from Will Deacon: "Fix compat vDSO build flags for recent versions of clang to tell it where to find the assembler" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: vdso32: Fix '--prefix=' value for newer versions of clang
2020-07-24Merge tag 'for-5.8-rc6-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into master Pull btrfs fixes from David Sterba: "A few resouce leak fixes from recent patches, all are stable material. The problems have been observed during testing or have a reproducer" * tag 'for-5.8-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: fix mount failure caused by race with umount btrfs: fix page leaks after failure to lock page for delalloc btrfs: qgroup: fix data leak caused by race between writeback and truncate btrfs: fix double free on ulist after backref resolution failure
2020-07-24Merge tag 'zonefs-5.8-rc7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs into master Pull zonefs fixes from Damien Le Moal: "Two fixes, the first one to remove compilation warnings and the second to avoid potentially inefficient allocation of BIOs for direct writes into sequential zones" * tag 'zonefs-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs: zonefs: count pages after truncating the iterator zonefs: Fix compilation warning
2020-07-24Merge tag 'io_uring-5.8-2020-07-24' of git://git.kernel.dk/linux-block into ↵Linus Torvalds
master Pull io_uring fixes from Jens Axboe: - Fix discrepancy in how sqe->flags are treated for a few requests, this makes it consistent (Daniele) - Ensure that poll driven retry works with double waitqueue poll users - Fix a missing io_req_init_async() (Pavel) * tag 'io_uring-5.8-2020-07-24' of git://git.kernel.dk/linux-block: io_uring: missed req_init_async() for IOSQE_ASYNC io_uring: always allow drain/link/hardlink/async sqe flags io_uring: ensure double poll additions work with both request types
2020-07-24Merge tag 'iommu-fix-v5.8-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu into master Pull iommu fix from Joerg Roedel: "Fix a NULL-ptr dereference in the QCOM IOMMU driver" * tag 'iommu-fix-v5.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: iommu/qcom: Use domain rather than dev as tlb cookie
2020-07-24Merge tag 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma into master Pull rdma fixes from Jason Gunthorpe: "One merge window regression, some corruption bugs in HNS and a few more syzkaller fixes: - Two long standing syzkaller races - Fix incorrect HW configuration in HNS - Restore accidentally dropped locking in IB CM - Fix ODP prefetch bug added in the big rework several versions ago" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: RDMA/mlx5: Prevent prefetch from racing with implicit destruction RDMA/cm: Protect access to remote_sidr_table RDMA/core: Fix race in rdma_alloc_commit_uobject() RDMA/hns: Fix wrong PBL offset when VA is not aligned to PAGE_SIZE RDMA/hns: Fix wrong assignment of lp_pktn_ini in QPC RDMA/mlx5: Use xa_lock_irq when access to SRQ table
2020-07-24Merge tag 'for-5.8/dm-fixes-3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm into master Pull device mapper fix from Mike Snitzer: "A stable fix for DM integrity target's integrity recalculation that gets skipped when resuming a device. This is a fix for a previous stable@ fix" * tag 'for-5.8/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm integrity: fix integrity recalculation that is improperly skipped
2020-07-24Merge branch 'i2c/for-current' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into master Pull i2c fixes from Wolfram Sang: "Again some driver bugfixes and some documentation fixes" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: i2c-qcom-geni: Fix DMA transfer race i2c: rcar: always clear ICSAR to avoid side effects MAINTAINERS: i2c: at91: handover maintenance to Codrin Ciubotariu i2c: drop duplicated word in the header file i2c: cadence: Clear HOLD bit at correct time in Rx path Revert "i2c: cadence: Fix the hold bit setting"
2020-07-24Merge tag 'mmc-v5.8-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc into master Pull MMC fix from Ulf Hansson: "Fix clock divider calculation in the ASPEED SDHCI controller" * tag 'mmc-v5.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: mmc: sdhci-of-aspeed: Fix clock divider calculation
2020-07-24Merge tag 'drm-fixes-2020-07-24' of git://anongit.freedesktop.org/drm/drm ↵Linus Torvalds
into master Pull drm fixes from Dave Airlie: "Quiet fixes, I may have a single regression fix follow up to this for nouveau, but it might be next week, Ben was testing it a bit more . Otherwise two amdgpu fixes, one lima and one sun4i: amdgpu: - Fix crash when overclocking VegaM - Fix possible crash when editing dpm levels sun4i: - Fix inverted HPD result; fixes an earlier fix lima: - fix timeout during reset" * tag 'drm-fixes-2020-07-24' of git://anongit.freedesktop.org/drm/drm: drm/amdgpu: Fix NULL dereference in dpm sysfs handlers drm/amd/powerplay: fix a crash when overclocking Vega M drm/lima: fix wait pp reset timeout drm: sun4i: hdmi: Fix inverted HPD result
2020-07-24scripts/gdb: fix lx-symbols 'gdb.error' while loading modulesStefano Garzarella
Commit ed66f991bb19 ("module: Refactor section attr into bin attribute") removed the 'name' field from 'struct module_sect_attr' triggering the following error when invoking lx-symbols: (gdb) lx-symbols loading vmlinux scanning for modules in linux/build loading @0xffffffffc014f000: linux/build/drivers/net/tun.ko Python Exception <class 'gdb.error'> There is no member named name.: Error occurred in Python: There is no member named name. This patch fixes the issue taking the module name from the 'struct attribute'. Fixes: ed66f991bb19 ("module: Refactor section attr into bin attribute") Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Kieran Bingham <kbingham@kernel.org> Link: http://lkml.kernel.org/r/20200722102239.313231-1-sgarzare@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24MAINTAINERS: add KCOV sectionAndrey Konovalov
To link KCOV to the kasan-dev@ mailing list. Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Marco Elver <elver@google.com> Link: http://lkml.kernel.org/r/5fa344db7ac4af2213049e5656c0f43d6ecaa379.1595331682.git.andreyknvl@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24io-mapping: indicate mapping failureMichael J. Ruhl
The !ATOMIC_IOMAP version of io_maping_init_wc will always return success, even when the ioremap fails. Since the ATOMIC_IOMAP version returns NULL when the init fails, and callers check for a NULL return on error this is unexpected. During a device probe, where the ioremap failed, a crash can look like this: BUG: unable to handle page fault for address: 0000000000210000 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page Oops: 0002 [#1] PREEMPT SMP CPU: 0 PID: 177 Comm: RIP: 0010:fill_page_dma [i915] gen8_ppgtt_create [i915] i915_ppgtt_create [i915] intel_gt_init [i915] i915_gem_init [i915] i915_driver_probe [i915] pci_device_probe really_probe driver_probe_device The remap failure occurred much earlier in the probe. If it had been propagated, the driver would have exited with an error. Return NULL on ioremap failure. [akpm@linux-foundation.org: detect ioremap_wc() errors earlier] Fixes: cafaf14a5d8f ("io-mapping: Always create a struct to hold metadata about the io-mapping") Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/20200721171936.81563-1-michael.j.ruhl@intel.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24scripts/decode_stacktrace: strip basepath from all pathsPi-Hsun Shih
Currently the basepath is removed only from the beginning of the string. When the symbol is inlined and there's multiple line outputs of addr2line, only the first line would have basepath removed. Change to remove the basepath prefix from all lines. Fixes: 31013836a71e ("scripts/decode_stacktrace: match basepath using shell prefix operator, not regex") Co-developed-by: Shik Chen <shik@chromium.org> Signed-off-by: Pi-Hsun Shih <pihsun@chromium.org> Signed-off-by: Shik Chen <shik@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Cc: Sasha Levin <sashal@kernel.org> Cc: Nicolas Boichat <drinkcat@chromium.org> Cc: Jiri Slaby <jslaby@suse.cz> Link: http://lkml.kernel.org/r/20200720082709.252805-1-pihsun@chromium.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24squashfs: fix length field overlap check in metadata readingPhillip Lougher
This is a regression introduced by the "migrate from ll_rw_block usage to BIO" patch. Squashfs packs structures on byte boundaries, and due to that the length field (of the metadata block) may not be fully in the current block. The new code rewrote and introduced a faulty check for that edge case. Fixes: 93e72b3c612adcaca1 ("squashfs: migrate from ll_rw_block usage to BIO") Reported-by: Bernd Amend <bernd.amend@gmail.com> Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Adrien Schildknecht <adrien+dev@schischi.me> Cc: Guenter Roeck <groeck@chromium.org> Cc: Daniel Rosenberg <drosen@google.com> Link: http://lkml.kernel.org/r/20200717195536.16069-1-phillip@squashfs.org.uk Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24mailmap: add entry for Mike RapoportMike Rapoport
Add an entry to correct my email addresses. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20200708095414.12275-1-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24khugepaged: fix null-pointer dereference due to raceKirill A. Shutemov
khugepaged has to drop mmap lock several times while collapsing a page. The situation can change while the lock is dropped and we need to re-validate that the VMA is still in place and the PMD is still subject for collapse. But we miss one corner case: while collapsing an anonymous pages the VMA could be replaced with file VMA. If the file VMA doesn't have any private pages we get NULL pointer dereference: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] anon_vma_lock_write include/linux/rmap.h:120 [inline] collapse_huge_page mm/khugepaged.c:1110 [inline] khugepaged_scan_pmd mm/khugepaged.c:1349 [inline] khugepaged_scan_mm_slot mm/khugepaged.c:2110 [inline] khugepaged_do_scan mm/khugepaged.c:2193 [inline] khugepaged+0x3bba/0x5a10 mm/khugepaged.c:2238 The fix is to make sure that the VMA is anonymous in hugepage_vma_revalidate(). The helper is only used for collapsing anonymous pages. Fixes: 99cb0dbd47a1 ("mm,thp: add read-only THP support for (non-shmem) FS") Reported-by: syzbot+ed318e8b790ca72c5ad0@syzkaller.appspotmail.com Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: Yang Shi <yang.shi@linux.alibaba.com> Cc: <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/20200722121439.44328-1-kirill.shutemov@linux.intel.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24mm/hugetlb: avoid hardcoding while checking if cma is enabledBarry Song
hugetlb_cma[0] can be NULL due to various reasons, for example, node0 has no memory. so NULL hugetlb_cma[0] doesn't necessarily mean cma is not enabled. gigantic pages might have been reserved on other nodes. This patch fixes possible double reservation and CMA leak. [akpm@linux-foundation.org: fix CONFIG_CMA=n warning] [sfr@canb.auug.org.au: better checks before using hugetlb_cma] Link: http://lkml.kernel.org/r/20200721205716.6dbaa56b@canb.auug.org.au Fixes: cf11e85fc08c ("mm: hugetlb: optionally allocate gigantic hugepages using cma") Signed-off-by: Barry Song <song.bao.hua@hisilicon.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Acked-by: Roman Gushchin <guro@fb.com> Cc: Jonathan Cameron <jonathan.cameron@huawei.com> Cc: <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/20200710005726.36068-1-song.bao.hua@hisilicon.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24mm: memcg/slab: fix memory leak at non-root kmem_cache destroyMuchun Song
If the kmem_cache refcount is greater than one, we should not mark the root kmem_cache as dying. If we mark the root kmem_cache dying incorrectly, the non-root kmem_cache can never be destroyed. It resulted in memory leak when memcg was destroyed. We can use the following steps to reproduce. 1) Use kmem_cache_create() to create a new kmem_cache named A. 2) Coincidentally, the kmem_cache A is an alias for kmem_cache B, so the refcount of B is just increased. 3) Use kmem_cache_destroy() to destroy the kmem_cache A, just decrease the B's refcount but mark the B as dying. 4) Create a new memory cgroup and alloc memory from the kmem_cache B. It leads to create a non-root kmem_cache for allocating memory. 5) When destroy the memory cgroup created in the step 4), the non-root kmem_cache can never be destroyed. If we repeat steps 4) and 5), this will cause a lot of memory leak. So only when refcount reach zero, we mark the root kmem_cache as dying. Fixes: 92ee383f6daa ("mm: fix race between kmem_cache destroy, create and deactivate") Signed-off-by: Muchun Song <songmuchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <guro@fb.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/20200716165103.83462-1-songmuchun@bytedance.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24mm/memcg: fix refcount error while moving and swappingHugh Dickins
It was hard to keep a test running, moving tasks between memcgs with move_charge_at_immigrate, while swapping: mem_cgroup_id_get_many()'s refcount is discovered to be 0 (supposedly impossible), so it is then forced to REFCOUNT_SATURATED, and after thousands of warnings in quick succession, the test is at last put out of misery by being OOM killed. This is because of the way moved_swap accounting was saved up until the task move gets completed in __mem_cgroup_clear_mc(), deferred from when mem_cgroup_move_swap_account() actually exchanged old and new ids. Concurrent activity can free up swap quicker than the task is scanned, bringing id refcount down 0 (which should only be possible when offlining). Just skip that optimization: do that part of the accounting immediately. Fixes: 615d66c37c75 ("mm: memcontrol: fix memcg id ref counter on swap charge move") Signed-off-by: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Alex Shi <alex.shi@linux.alibaba.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Michal Hocko <mhocko@suse.com> Cc: <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/alpine.LSU.2.11.2007071431050.4726@eggly.anvils Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24mm/memcontrol: fix OOPS inside mem_cgroup_get_nr_swap_pages()Bhupesh Sharma
Prabhakar reported an OOPS inside mem_cgroup_get_nr_swap_pages() function in a corner case seen on some arm64 boards when kdump kernel runs with "cgroup_disable=memory" passed to the kdump kernel via bootargs. The root-cause behind the same is that currently mem_cgroup_swap_init() function is implemented as a subsys_initcall() call instead of a core_initcall(), this means 'cgroup_memory_noswap' still remains set to the default value (false) even when memcg is disabled via "cgroup_disable=memory" boot parameter. This may result in premature OOPS inside mem_cgroup_get_nr_swap_pages() function in corner cases: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000188 Mem abort info: ESR = 0x96000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [0000000000000188] user address but active_mm is swapper Internal error: Oops: 96000006 [#1] SMP Modules linked in: <..snip..> Call trace: mem_cgroup_get_nr_swap_pages+0x9c/0xf4 shrink_lruvec+0x404/0x4f8 shrink_node+0x1a8/0x688 do_try_to_free_pages+0xe8/0x448 try_to_free_pages+0x110/0x230 __alloc_pages_slowpath.constprop.106+0x2b8/0xb48 __alloc_pages_nodemask+0x2ac/0x2f8 alloc_page_interleave+0x20/0x90 alloc_pages_current+0xdc/0xf8 atomic_pool_expand+0x60/0x210 __dma_atomic_pool_init+0x50/0xa4 dma_atomic_pool_init+0xac/0x158 do_one_initcall+0x50/0x218 kernel_init_freeable+0x22c/0x2d0 kernel_init+0x18/0x110 ret_from_fork+0x10/0x18 Code: aa1403e3 91106000 97f82a27 14000011 (f940c663) ---[ end trace 9795948475817de4 ]--- Kernel panic - not syncing: Fatal exception Rebooting in 10 seconds.. Fixes: eccb52e78809 ("mm: memcontrol: prepare swap controller setup for integration") Reported-by: Prabhakar Kushwaha <pkushwaha@marvell.com> Signed-off-by: Bhupesh Sharma <bhsharma@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: James Morse <james.morse@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Link: http://lkml.kernel.org/r/1593641660-13254-2-git-send-email-bhsharma@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24mm: initialize return of vm_insert_pagesTom Rix
clang static analysis reports a garbage return In file included from mm/memory.c:84: mm/memory.c:1612:2: warning: Undefined or garbage value returned to caller [core.uninitialized.UndefReturn] return err; ^~~~~~~~~~ The setting of err depends on a loop executing. So initialize err. Signed-off-by: Tom Rix <trix@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20200703155354.29132-1-trix@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24vfs/xattr: mm/shmem: kernfs: release simple xattr entry in a right wayChengguang Xu
After commit fdc85222d58e ("kernfs: kvmalloc xattr value instead of kmalloc"), simple xattr entry is allocated with kvmalloc() instead of kmalloc(), so we should release it with kvfree() instead of kfree(). Fixes: fdc85222d58e ("kernfs: kvmalloc xattr value instead of kmalloc") Signed-off-by: Chengguang Xu <cgxu519@mykernel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Hugh Dickins <hughd@google.com> Acked-by: Tejun Heo <tj@kernel.org> Cc: Daniel Xu <dxu@dxuuu.xyz> Cc: Chris Down <chris@chrisdown.name> Cc: Andreas Dilger <adilger@dilger.ca> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <stable@vger.kernel.org> [5.7] Link: http://lkml.kernel.org/r/20200704051608.15043-1-cgxu519@mykernel.net Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24mm/mmap.c: close race between munmap() and expand_upwards()/downwards()Kirill A. Shutemov
VMA with VM_GROWSDOWN or VM_GROWSUP flag set can change their size under mmap_read_lock(). It can lead to race with __do_munmap(): Thread A Thread B __do_munmap() detach_vmas_to_be_unmapped() mmap_write_downgrade() expand_downwards() vma->vm_start = address; // The VMA now overlaps with // VMAs detached by the Thread A // page fault populates expanded part // of the VMA unmap_region() // Zaps pagetables partly // populated by Thread B Similar race exists for expand_upwards(). The fix is to avoid downgrading mmap_lock in __do_munmap() if detached VMAs are next to VM_GROWSDOWN or VM_GROWSUP VMA. [akpm@linux-foundation.org: s/mmap_sem/mmap_lock/ in comment] Fixes: dd2283f2605e ("mm: mmap: zap pages with read mmap_sem in munmap") Reported-by: Jann Horn <jannh@google.com> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Yang Shi <yang.shi@linux.alibaba.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: <stable@vger.kernel.org> [4.20+] Link: http://lkml.kernel.org/r/20200709105309.42495-1-kirill.shutemov@linux.intel.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-24ASoC: dapm: don't call pm_runtime_* on card deviceTzung-Bi Shih
runtime_usage of sound card has been observed to grow without bound. For example: $ cat /sys/devices/platform/sound/power/runtime_usage 46 $ sox -n -t s16 -r 48000 -c 2 - synth 1 sine 440 vol 0.1 | \ aplay -q -D hw:0,0 -f S16_LE -r 48000 -c 2 $ cat /sys/devices/platform/sound/power/runtime_usage 52 Commit 4e872a46823c ("ASoC: dapm: Don't force card bias level to be updated") stops to force update bias_level on card. If card doesn't provide set_bias_level callback, the snd_soc_dapm_set_bias_level() is equivalent to NOP for card device. As a result, dapm_pre_sequence_async() doesn't change the bias_level of card device correctly. Thus, pm_runtime_get_sync() would be called in dapm_pre_sequence_async() without symmetric pm_runtime_put() in dapm_post_sequence_async(). Don't call pm_runtime_* on card device. Signed-off-by: Tzung-Bi Shih <tzungbi@google.com> Link: https://lore.kernel.org/r/20200724070731.451377-1-tzungbi@google.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-24ALSA: hda/realtek: typo_fix: enable headset mic of ASUS ROG Zephyrus ↵Armas Spann
G14(GA401) series with ALC289 This patch fixes a small typo I accidently submitted with the initial patch. The board should be named GA401 not G401. Fixes: ff53664daff2 ("ALSA: hda/realtek: enable headset mic of ASUS ROG Zephyrus G14(G401) series with ALC289") Signed-off-by: Armas Spann <zappel@retarded.farm> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200724140837.302763-1-zappel@retarded.farm Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-07-24ALSA: hda/realtek: enable headset mic of ASUS ROG Zephyrus G15(GA502) series ↵Armas Spann
with ALC289 This patch adds support for headset mic to the ASUS ROG Zephyrus G15(GA502) notebook series by adding the corresponding vendor/pci_device id, as well as adding a new fixup for the used realtek ALC289. The fixup stets the correct pin to get the headset mic correctly recognized on audio-jack. Signed-off-by: Armas Spann <zappel@retarded.farm> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200724140616.298892-1-zappel@retarded.farm Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-07-24Merge series "ASoC: qcom: Use qcom_snd_parse_of() for apq8016_sbc" from ↵Mark Brown
Stephan Gerhold <stephan@gerhold.net>: At the moment we have two separate functions to parse the sound card properties from the device tree: qcom_snd_parse_of() for DPCM and apq8016_sbc_parse_of() without DPCM. These functions are almost identical except for a few minor differences. This patch set extends qcom_snd_parse_of() to handle links without DPCM, so that we can use one common function for all (qcom) machine drivers. Stephan Gerhold (7): ASoC: qcom: Use devm for resource management ASoC: qcom: common: Use snd_soc_dai_link_set_capabilities() ASoC: q6afe: Remove unused q6afe_is_rx_port() function ASoC: qcom: common: Support parsing links without DPCM ASoC: qcom: common: Parse properties with "qcom," prefix ASoC: qcom: apq8016_sbc: Use qcom_snd_parse_of() ASoC: qcom: common: Avoid printing errors for -EPROBE_DEFER sound/soc/qcom/Kconfig | 1 + sound/soc/qcom/apq8016_sbc.c | 120 ++++------------------------------- sound/soc/qcom/apq8096.c | 28 +------- sound/soc/qcom/common.c | 58 ++++++++++------- sound/soc/qcom/qdsp6/q6afe.c | 8 --- sound/soc/qcom/qdsp6/q6afe.h | 1 - sound/soc/qcom/sdm845.c | 40 ++---------- 7 files changed, 59 insertions(+), 197 deletions(-) -- 2.27.0
2020-07-24ASoC: max98390: update dsm param bin max sizeSteve Lee
MAX98390_DSM_PARAM_MAX_SIZE is changed to support extended register update. Signed-off-by: Steve Lee <steves.lee@maximintegrated.com> Link: https://lore.kernel.org/r/20200724085644.9837-1-steves.lee@maximintegrated.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-24ASoC: max98390: Update dsm init sequence and condition.Steve Lee
Modify dsm_init sequence and dsm param bin check condition. - Move dsm_init() to after amp init setting to make sure dsm init is last setting. - dsm param bin check condition changed for extended register setting. Signed-off-by: Steve Lee <steves.lee@maximintegrated.com> Link: https://lore.kernel.org/r/20200724060149.19261-1-steves.lee@maximintegrated.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-24ASoC: soc-component: don't report of_xlate_dai_name failuresJerome Brunet
With commit e2329eeba45f ("ASoC: soc-component: add soc_component_err()") every error different for ENOTSUPP or EPROBE_DEFER will log an error. However, as explained in snd_soc_get_dai_name(), this callback may error to indicate that the DAI is not matched by the component tested. If the device provides other components, those may still match. Logging an error in this case is misleading. Don't use soc_component_ret() in snd_soc_component_of_xlate_dai_name() to avoid spamming the log. Fixes: e2329eeba45f ("ASoC: soc-component: add soc_component_err()") Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/20200723142020.1338740-1-jbrunet@baylibre.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-24ASoC: qcom: common: Avoid printing errors for -EPROBE_DEFERStephan Gerhold
qcom_snd_parse_of() tends to produce lots of error messages during bootup: MultiMedia1: error getting cpu dai name This happens because the DAIs are not probed until the ADSP remoteproc has booted, which takes a while. Until it is ready, snd_soc_of_get_dai_name() returns -EDEFER_PROBE to retry probing later. This is perfectly normal, so cleanup the kernel log a bit by not printing in case of -EPROBE_DEFER. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20200723183904.321040-8-stephan@gerhold.net Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-24ASoC: qcom: apq8016_sbc: Use qcom_snd_parse_of()Stephan Gerhold
Now that we have updated qcom_snd_parse_of() to handle the device tree bindings used for apq8016_sbc, update the apq8016_sbc driver to use the common function and remove the duplicated code. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20200723183904.321040-7-stephan@gerhold.net Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-24ASoC: qcom: common: Parse properties with "qcom," prefixStephan Gerhold
The apq8016_sbc device tree binding uses a "qcom," vendor prefix for all device tree properties, while qcom_snd_parse_of() uses the same properties without a prefix. In the future it would be nice to make this consistent, however, for backwards compatibility we need to parse both names to allow apq8016_sbc to use the common qcom_snd_parse_of() function. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20200723183904.321040-6-stephan@gerhold.net Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-24ASoC: qcom: common: Support parsing links without DPCMStephan Gerhold
So far qcom_snd_parse_of() was only used to parse the device tree for boards using the QDSP6 driver together with DPCM. apq8016_sbc uses an almost identical version (apq8016_sbc_parse_of()) which parses links without DPCM. Given the similarity of the two functions it is useful to combine these two. To allow using qcom_snd_parse_of() in apq8016_sbc we need to support parsing links without DPCM as well. This is pretty simple: A DPCM link in the device tree is defined using: - DPCM frontend: "cpu" - DPCM backend: "cpu", "platform" and "codec" ... while a link without DPCM has "cpu" and "codec" (but no "platform"). Add a few more if conditions to handle links without DPCM correctly. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20200723183904.321040-5-stephan@gerhold.net Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-24ASoC: q6afe: Remove unused q6afe_is_rx_port() functionStephan Gerhold
This reverts commit 4a95737440d ("ASoc: q6afe: add support to get port direction"), since the function is not needed anymore. q6afe-dai already exposes the possible directions for a DAI through the DAI capabilities (playback/capture-only DAI). Now we use snd_soc_dai_link_set_capabilities() to infer the information directly from the DAI capabilities. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20200723183904.321040-4-stephan@gerhold.net Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-24ASoC: qcom: common: Use snd_soc_dai_link_set_capabilities()Stephan Gerhold
Commit a2120089251f ("ASoC: qcom: common: set correct directions for dailinks") introduced a call to q6afe_is_rx_port() to set the dpcm_playback/capture parameters correctly. This is necessary because those parameters are now validated to match the capabilities of the DAIs. [1] The disadvantage of introducing the call to q6afe_is_rx_port() is that it makes the qcom_snd_parse_of() helper dependent on the QDSP6 driver. When the ADSP is bypassed (e.g. in apq8016-sbc) QDSP6 is not used. There is a generic solution for this now: The correct direction for the links is already defined by the DAI capabilities (e.g. rx ports only support playback). Commit 25612477d20b ("ASoC: soc-dai: set dai_link dpcm_ flags with a helper") introduced the snd_soc_dai_link_set_capabilities() function that we can use to set dpcm_playback/dpcm_capture according to the capabilities of the DAIs. Use that for both FE/BE DAI links to avoid the dependency on the QDSP6 driver. [1]: https://lore.kernel.org/alsa-devel/20200616085409.GA110999@gerhold.net/ Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20200723183904.321040-3-stephan@gerhold.net Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-24ASoC: qcom: Use devm for resource managementStephan Gerhold
Simplify the machine drivers for newer SoCs a bit by using the devm_* function calls that automatically release the resources when the driver is removed or when probing fails. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20200723183904.321040-2-stephan@gerhold.net Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-24uprobes: Change handle_swbp() to send SIGTRAP with si_code=SI_KERNEL, to fix ↵Oleg Nesterov
GDB regression If a tracee is uprobed and it hits int3 inserted by debugger, handle_swbp() does send_sig(SIGTRAP, current, 0) which means si_code == SI_USER. This used to work when this code was written, but then GDB started to validate si_code and now it simply can't use breakpoints if the tracee has an active uprobe: # cat test.c void unused_func(void) { } int main(void) { return 0; } # gcc -g test.c -o test # perf probe -x ./test -a unused_func # perf record -e probe_test:unused_func gdb ./test -ex run GNU gdb (GDB) 10.0.50.20200714-git ... Program received signal SIGTRAP, Trace/breakpoint trap. 0x00007ffff7ddf909 in dl_main () from /lib64/ld-linux-x86-64.so.2 (gdb) The tracee hits the internal breakpoint inserted by GDB to monitor shared library events but GDB misinterprets this SIGTRAP and reports a signal. Change handle_swbp() to use force_sig(SIGTRAP), this matches do_int3_user() and fixes the problem. This is the minimal fix for -stable, arch/x86/kernel/uprobes.c is equally wrong; it should use send_sigtrap(TRAP_TRACE) instead of send_sig(SIGTRAP), but this doesn't confuse GDB and needs another x86-specific patch. Reported-by: Aaron Merey <amerey@redhat.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200723154420.GA32043@redhat.com
2020-07-24ASoC: max98390: Fix dac event dapm mixer.Steve Lee
Global EN register guide to off before AMP_EN register when amp disable sequence. - remove AMP_EN control before max98390_dac_event call Signed-off-by: Steve Lee <steves.lee@maximintegrated.com> Link: https://lore.kernel.org/r/20200724060058.19201-1-steves.lee@maximintegrated.com Signed-off-by: Mark Brown <broonie@kernel.org>
2020-07-24sched: Warn if garbage is passed to default_wake_function()Chris Wilson
Since the default_wake_function() passes its flags onto try_to_wake_up(), warn if those flags collide with internal values. Given that the supplied flags are garbage, no repair can be done but at least alert the user to the damage they are causing. In the belief that these errors should be picked up during testing, the warning is only compiled in under CONFIG_SCHED_DEBUG. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: https://lore.kernel.org/r/20200723201042.18861-1-chris@chris-wilson.co.uk
2020-07-24serial: exar: Fix GPIO configuration for Sealevel cards based on XR17V35XMatthew Howell
Sealevel XR17V35X based devices are inoperable on kernel versions 4.11 and above due to a change in the GPIO preconfiguration introduced in commit 7dea8165f1d. This patch fixes this by preconfiguring the GPIO on Sealevel cards to the value (0x00) used prior to commit 7dea8165f1d With GPIOs preconfigured as per commit 7dea8165f1d all ports on Sealevel XR17V35X based devices become stuck in high impedance mode, regardless of dip-switch or software configuration. This causes the device to become effectively unusable. This patch (in various forms) has been distributed to our customers and no issues related to it have been reported. Fixes: 7dea8165f1d6 ("serial: exar: Preconfigure xr17v35x MPIOs as output") Signed-off-by: Matthew Howell <matthew.howell@sealevel.com> Link: https://lore.kernel.org/r/alpine.DEB.2.21.2007221605270.13247@tstest-VirtualBox Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller
Pablo Neira Ayuso says: ==================== Netfilter/IPVS fixes for net The following patchset contains Netfilter/IPVS fixes for net: 1) Fix NAT hook deletion when table is dormant, from Florian Westphal. 2) Fix IPVS sync stalls, from guodeqing. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-23geneve: fix an uninitialized value in geneve_changelink()Cong Wang
geneve_nl2info() sets 'df' conditionally, so we have to initialize it by copying the value from existing geneve device in geneve_changelink(). Fixes: 56c09de347e4 ("geneve: allow changing DF behavior after creation") Reported-by: syzbot+7ebc2e088af5e4c0c9fa@syzkaller.appspotmail.com Cc: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-23bonding: check return value of register_netdevice() in bond_newlink()Cong Wang
Very similar to commit 544f287b8495 ("bonding: check error value of register_netdevice() immediately"), we should immediately check the return value of register_netdevice() before doing anything else. Fixes: 005db31d5f5f ("bonding: set carrier off for devices created through netlink") Reported-and-tested-by: syzbot+bbc3a11c4da63c1b74d6@syzkaller.appspotmail.com Cc: Beniamino Galvani <bgalvani@redhat.com> Cc: Taehee Yoo <ap420073@gmail.com> Cc: Jay Vosburgh <j.vosburgh@gmail.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-23Revert "cifs: Fix the target file was deleted when rename failed."Steve French
This reverts commit 9ffad9263b467efd8f8dc7ae1941a0a655a2bab2. Upon additional testing with older servers, it was found that the original commit introduced a regression when using the old SMB1 dialect and rsyncing over an existing file. The patch will need to be respun to address this, likely including a larger refactoring of the SMB1 and SMB3 rename code paths to make it less confusing and also to address some additional rename error cases that SMB3 may be able to workaround. Signed-off-by: Steve French <stfrench@microsoft.com> Reported-by: Patrick Fernie <patrick.fernie@gmail.com> CC: Stable <stable@vger.kernel.org> Acked-by: Ronnie Sahlberg <lsahlber@redhat.com> Acked-by: Pavel Shilovsky <pshilov@microsoft.com> Acked-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
2020-07-23Merge tag 's390-5.8-6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux into master Pull s390 fixes from Heiko Carstens: - Change cpum_cf/perf counter name from DFLT_CCERROR to DFLT_CCFINISH to reflect reality and avoid further confusion. This is a user space visible change therefore the commit has also a stable tag for 5.7, where this counter was introduced. - Add Matthew Rosato as s390 IOMMU maintainer. * tag 's390-5.8-6' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: MAINTAINERS: add Matthew for s390 IOMMU s390/cpum_cf,perf: change DFLT_CCERROR counter name
2020-07-23i2c: i2c-qcom-geni: Fix DMA transfer raceDouglas Anderson
When I have KASAN enabled on my kernel and I start stressing the touchscreen my system tends to hang. The touchscreen is one of the only things that does a lot of big i2c transfers and ends up hitting the DMA paths in the geni i2c driver. It appears that KASAN adds enough delay in my system to tickle a race condition in the DMA setup code. When the system hangs, I found that it was running the geni_i2c_irq() over and over again. It had these: m_stat = 0x04000080 rx_st = 0x30000011 dm_tx_st = 0x00000000 dm_rx_st = 0x00000000 dma = 0x00000001 Notably we're in DMA mode but are getting M_RX_IRQ_EN and M_RX_FIFO_WATERMARK_EN over and over again. Putting some traces in geni_i2c_rx_one_msg() showed that when we failed we were getting to the start of geni_i2c_rx_one_msg() but were never executing geni_se_rx_dma_prep(). I believe that the problem here is that we are starting the geni command before we run geni_se_rx_dma_prep(). If a transfer makes it far enough before we do that then we get into the state I have observed. Let's change the order, which seems to work fine. Although problems were seen on the RX path, code inspection suggests that the TX should be changed too. Change it as well. Fixes: 37692de5d523 ("i2c: i2c-qcom-geni: Add bus driver for the Qualcomm GENI I2C controller") Signed-off-by: Douglas Anderson <dianders@chromium.org> Tested-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> Reviewed-by: Akash Asthana <akashast@codeaurora.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Reviewed-by: Mukesh Kumar Savaliya <msavaliy@codeaurora.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
2020-07-23i2c: rcar: always clear ICSAR to avoid side effectsWolfram Sang
On R-Car Gen2, we get a timeout when reading from the address set in ICSAR, even though the slave interface is disabled. Clearing it fixes this situation. Note that Gen3 is not affected. To reproduce: bind and undbind an I2C slave on some bus, run 'i2cdetect' on that bus. Fixes: de20d1857dd6 ("i2c: rcar: add slave support") Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>