linux/fs, branch v5.8

Merge tag 'io_uring-5.8-2020-07-30' of git://git.kernel.dk/linux-block

2020-07-30T16:47:07Z

Pull io_uring fixes from Jens Axboe: "Two small fixes for corner/error cases" * tag 'io_uring-5.8-2020-07-30' of git://git.kernel.dk/linux-block: io_uring: fix lockup in io_fail_links() io_uring: fix ->work corruption with poll_add

Merge tag 'efi-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into master

2020-07-25T20:18:42Z

Pull EFI fixes from Ingo Molnar: "Various EFI fixes: - Fix the layering violation in the use of the EFI runtime services availability mask in users of the 'efivars' abstraction - Revert build fix for GCC v4.8 which is no longer supported - Clean up some x86 EFI stub details, some of which are borderline bugs that copy around garbage into padding fields - let's fix these out of caution. - Fix build issues while working on RISC-V support - Avoid --whole-archive when linking the stub on arm64" * tag 'efi-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi: Revert "efi/x86: Fix build with gcc 4" efi/efivars: Expose RT service availability via efivars abstraction efi/libstub: Move the function prototypes to header file efi/libstub: Fix gcc error around __umoddi3 for 32 bit builds efi/libstub/arm64: link stub lib.a conditionally efi/x86: Only copy upto the end of setup_header efi/x86: Remove unused variables

Merge tag '5.8-rc6-cifs-fix' of git://git.samba.org/sfrench/cifs-2.6 into master

2020-07-25T19:53:46Z

Pull cifs fix from Steve French: "A fix for a recently discovered regression in rename to older servers caused by a recent patch" * tag '5.8-rc6-cifs-fix' of git://git.samba.org/sfrench/cifs-2.6: Revert "cifs: Fix the target file was deleted when rename failed."

Merge tag 'nfsd-5.8-2' of git://linux-nfs.org/~bfields/linux into master

2020-07-24T23:27:54Z

Pull nfsd fix from Bruce Fields: "Just one fix for a NULL dereference if someone happens to read /proc/fs/nfsd/client/../state at the wrong moment" * tag 'nfsd-5.8-2' of git://linux-nfs.org/~bfields/linux: nfsd4: fix NULL dereference in nfsd/clients display code

Merge branch 'akpm' into master (patches from Andrew)

2020-07-24T21:24:35Z

Merge misc fixes from Andrew Morton: "Subsystems affected by this patch series: mm/pagemap, mm/shmem, mm/hotfixes, mm/memcg, mm/hugetlb, mailmap, squashfs, scripts, io-mapping, MAINTAINERS, and gdb" * emailed patches from Andrew Morton : scripts/gdb: fix lx-symbols 'gdb.error' while loading modules MAINTAINERS: add KCOV section io-mapping: indicate mapping failure scripts/decode_stacktrace: strip basepath from all paths squashfs: fix length field overlap check in metadata reading mailmap: add entry for Mike Rapoport khugepaged: fix null-pointer dereference due to race mm/hugetlb: avoid hardcoding while checking if cma is enabled mm: memcg/slab: fix memory leak at non-root kmem_cache destroy mm/memcg: fix refcount error while moving and swapping mm/memcontrol: fix OOPS inside mem_cgroup_get_nr_swap_pages() mm: initialize return of vm_insert_pages vfs/xattr: mm/shmem: kernfs: release simple xattr entry in a right way mm/mmap.c: close race between munmap() and expand_upwards()/downwards()

Merge tag 'for-5.8-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into master

2020-07-24T21:11:43Z

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

Merge tag 'zonefs-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs into master

2020-07-24T21:09:19Z

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

Merge tag 'io_uring-5.8-2020-07-24' of git://git.kernel.dk/linux-block into master

2020-07-24T21:02:41Z

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

squashfs: fix length field overlap check in metadata reading

2020-07-24T19:42:41Z

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 Signed-off-by: Phillip Lougher Signed-off-by: Andrew Morton Cc: Christoph Hellwig Cc: Adrien Schildknecht Cc: Guenter Roeck Cc: Daniel Rosenberg Link: http://lkml.kernel.org/r/20200717195536.16069-1-phillip@squashfs.org.uk Signed-off-by: Linus Torvalds

io_uring: fix lockup in io_fail_links()

2020-07-24T18:51:33Z

io_fail_links() doesn't consider REQ_F_COMP_LOCKED leading to nested spin_lock(completion_lock) and lockup. [ 197.680409] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 6-... } 18239 jiffies s: 1421 root: 0x40/. [ 197.680411] rcu: blocking rcu_node structures: [ 197.680412] Task dump for CPU 6: [ 197.680413] link-timeout R running task 0 1669 1 0x8000008a [ 197.680414] Call Trace: [ 197.680420] ? io_req_find_next+0xa0/0x200 [ 197.680422] ? io_put_req_find_next+0x2a/0x50 [ 197.680423] ? io_poll_task_func+0xcf/0x140 [ 197.680425] ? task_work_run+0x67/0xa0 [ 197.680426] ? do_exit+0x35d/0xb70 [ 197.680429] ? syscall_trace_enter+0x187/0x2c0 [ 197.680430] ? do_group_exit+0x43/0xa0 [ 197.680448] ? __x64_sys_exit_group+0x18/0x20 [ 197.680450] ? do_syscall_64+0x52/0xa0 [ 197.680452] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 Signed-off-by: Pavel Begunkov Signed-off-by: Jens Axboe