1. 04 Aug, 2016 1 commit
    • Oleg Drokin's avatar
      nfsd: Make creates return EEXIST instead of EACCES · 7eed34f1
      Oleg Drokin authored
      
      
      When doing a create (mkdir/mknod) on a name, it's worth
      checking the name exists first before returning EACCES in case
      the directory is not writeable by the user.
      This makes return values on the client more consistent
      regardless of whenever the entry there is cached in the local
      cache or not.
      Another positive side effect is certain programs only expect
      EEXIST in that case even despite POSIX allowing any valid
      error to be returned.
      Signed-off-by: default avatarOleg Drokin <green@linuxhacker.ru>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      7eed34f1
  2. 01 Aug, 2016 2 commits
    • Trond Myklebust's avatar
      SUNRPC: Detect immediate closure of accepted sockets · c7995f8a
      Trond Myklebust authored
      
      
      This modification is useful for debugging issues that happen while
      the socket is being initialised.
      Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      c7995f8a
    • Trond Myklebust's avatar
      SUNRPC: accept() may return sockets that are still in SYN_RECV · b2f21f7d
      Trond Myklebust authored
      
      
      We're seeing traces of the following form:
      
       [10952.396347] svc: transport ffff88042ba4a 000 dequeued, inuse=2
       [10952.396351] svc: tcp_accept ffff88042ba4 a000 sock ffff88042a6e4c80
       [10952.396362] nfsd: connect from 10.2.6.1, port=187
       [10952.396364] svc: svc_setup_socket ffff8800b99bcf00
       [10952.396368] setting up TCP socket for reading
       [10952.396370] svc: svc_setup_socket created ffff8803eb10a000 (inet ffff88042b75b800)
       [10952.396373] svc: transport ffff8803eb10a000 put into queue
       [10952.396375] svc: transport ffff88042ba4a000 put into queue
       [10952.396377] svc: server ffff8800bb0ec000 waiting for data (to = 3600000)
       [10952.396380] svc: transport ffff8803eb10a000 dequeued, inuse=2
       [10952.396381] svc_recv: found XPT_CLOSE
       [10952.396397] svc: svc_delete_xprt(ffff8803eb10a000)
       [10952.396398] svc: svc_tcp_sock_detach(ffff8803eb10a000)
       [10952.396399] svc: svc_sock_detach(ffff8803eb10a000)
       [10952.396412] svc: svc_sock_free(ffff8803eb10a000)
      
      i.e. an immediate close of the socket after initialisation.
      
      The culprit appears to be the test at the end of svc_tcp_init, which
      checks if the newly created socket is in the TCP_ESTABLISHED state,
      and immediately closes it if not. The evidence appears to suggest that
      the socket might still be in the SYN_RECV state at this time.
      
      The fix is to check for both states, and then to add a check in
      svc_tcp_state_change() to ensure we don't close the socket when
      it transitions into TCP_ESTABLISHED.
      Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
      Signed-off-by: default avatarJ. Bruce Fields <bfields@redhat.com>
      b2f21f7d
  3. 15 Jul, 2016 4 commits
  4. 13 Jul, 2016 17 commits
  5. 01 Jul, 2016 2 commits
  6. 30 Jun, 2016 1 commit
  7. 27 Jun, 2016 1 commit
  8. 26 Jun, 2016 1 commit
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · 2ac9b973
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "Two straightforward fixes.
      
        One is a concurrency issue only affecting SAS connected SATA drives,
        but which could hang the storage subsystem if it triggers (because the
        outstanding command count on error never goes back to zero) and the
        other is a NO_TAG fallout from the switch to hostwide tags which
        causes the system to crash on module insertion (we've checked
        carefully and only the 53c700 family of drivers is vulnerable to this
        issue)"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        53c700: fix BUG on untagged commands
        scsi: fix race between simultaneous decrements of ->host_failed
      2ac9b973
  9. 25 Jun, 2016 11 commits
    • Linus Torvalds's avatar
      Merge branch 'for-linus-4.7-part2' of... · da2f6aba
      Linus Torvalds authored
      Merge branch 'for-linus-4.7-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
      
      Pull btrfs fixes part 2 from Chris Mason:
       "This has one patch from Omar to bring iterate_shared back to btrfs.
      
        We have a tree of work we queue up for directory items and it doesn't
        lend itself well to shared access.  While we're cleaning it up, Omar
        has changed things to use an exclusive lock when there are delayed
        items"
      
      * 'for-linus-4.7-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
        Btrfs: fix ->iterate_shared() by upgrading i_rwsem for delayed nodes
      da2f6aba
    • Linus Torvalds's avatar
      Merge branch 'for-linus-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs · b971712a
      Linus Torvalds authored
      Pull btrfs fixes from Chris Mason:
       "I have a two part pull this time because one of the patches Dave
        Sterba collected needed to be against v4.7-rc2 or higher (we used
        rc4).  I try to make my for-linus-xx branch testable on top of the
        last major so we can hand fixes to people on the list more easily, so
        I've split this pull in two.
      
        This first part has some fixes and two performance improvements that
        we've been testing for some time.
      
        Josef's two performance fixes are most notable.  The transid tracking
        patch makes a big improvement on pretty much every workload"
      
      * 'for-linus-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
        Btrfs: Force stripesize to the value of sectorsize
        btrfs: fix disk_i_size update bug when fallocate() fails
        Btrfs: fix error handling in map_private_extent_buffer
        Btrfs: fix error return code in btrfs_init_test_fs()
        Btrfs: don't do nocow check unless we have to
        btrfs: fix deadlock in delayed_ref_async_start
        Btrfs: track transid for delayed ref flushing
      b971712a
    • Linus Torvalds's avatar
      Merge tag 'sound-4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · ca83a55c
      Linus Torvalds authored
      Pull sound fixes from Takashi Iwai:
       "Again pretty calm weeks: we've had only a few trivial / stable
        HD-audio fixes in addition to a possible race fix for snd-dummy driver
        spotted by syzkaller"
      
      * tag 'sound-4.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: dummy: Fix a use-after-free at closing
        ALSA: hda / realtek - add two more Thinkpad IDs (5050,5053) for tpt460 fixup
        ALSA: hda - Fix the headset mic jack detection on Dell machine
        ALSA: hda/tegra: iomem fixups for sparse warnings
        ALSA: hdac_regmap - fix the register access for runtime PM
      ca83a55c
    • Linus Torvalds's avatar
      Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 9a949a98
      Linus Torvalds authored
      Pull x86 kprobe fix from Thomas Gleixner:
       "A single fix clearing the TF bit when a fault is single stepped"
      
      * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        kprobes/x86: Clear TF bit in fault on single-stepping
      9a949a98
    • Linus Torvalds's avatar
      Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 57801c1b
      Linus Torvalds authored
      Pull scheduler fixes from Thomas Gleixner:
       "A couple of scheduler fixes:
      
         - force watchdog reset while processing sysrq-w
      
         - fix a deadlock when enabling trace events in the scheduler
      
         - fixes to the throttled next buddy logic
      
         - fixes for the average accounting (missing serialization and
           underflow handling)
      
         - allow kernel threads for fallback to online but not active cpus"
      
      * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        sched/core: Allow kthreads to fall back to online && !active cpus
        sched/fair: Do not announce throttled next buddy in dequeue_task_fair()
        sched/fair: Initialize throttle_count for new task-groups lazily
        sched/fair: Fix cfs_rq avg tracking underflow
        kernel/sysrq, watchdog, sched/core: Reset watchdog on all CPUs while processing sysrq-w
        sched/debug: Fix deadlock when enabling sched events
        sched/fair: Fix post_init_entity_util_avg() serialization
      57801c1b
    • Omar Sandoval's avatar
      Btrfs: fix ->iterate_shared() by upgrading i_rwsem for delayed nodes · 02dbfc99
      Omar Sandoval authored
      Commit fe742fd4
      
       ("Revert "btrfs: switch to ->iterate_shared()"")
      backed out the conversion to ->iterate_shared() for Btrfs because the
      delayed inode handling in btrfs_real_readdir() is racy. However, we can
      still do readdir in parallel if there are no delayed nodes.
      
      This is a temporary fix which upgrades the shared inode lock to an
      exclusive lock only when we have delayed items until we come up with a
      more complete solution. While we're here, rename the
      btrfs_{get,put}_delayed_items functions to make it very clear that
      they're just for readdir.
      
      Tested with xfstests and by doing a parallel kernel build:
      
      	while make tinyconfig && make -j4 && git clean dqfx; do
      		:
      	done
      
      along with a bunch of parallel finds in another shell:
      
      	while true; do
      		for ((i=0; i<4; i++)); do
      			find . >/dev/null &
      		done
      		wait
      	done
      Signed-off-by: default avatarOmar Sandoval <osandov@fb.com>
      Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
      Signed-off-by: default avatarChris Mason <clm@fb.com>
      02dbfc99
    • Linus Torvalds's avatar
      Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · e3b22bc3
      Linus Torvalds authored
      Pull locking fix from Thomas Gleixner:
       "A single fix to address a race in the static key logic"
      
      * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        locking/static_key: Fix concurrent static_key_slow_inc()
      e3b22bc3
    • Linus Torvalds's avatar
      Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 2de23071
      Linus Torvalds authored
      Pull irq fix from Thomas Gleixner:
       "A single fix for the fallout from the conversion of MIPS GIC to irq
        domains"
      
      * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        irqchip/mips-gic: Fix IRQs in gic_dev_domain
      2de23071
    • Linus Torvalds's avatar
      Merge tag 'powerpc-4.7-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · 2f6e9747
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
       "mm/radix (Aneesh Kumar K.V):
         - Update to tlb functions ric argument
         - Flush page walk cache when freeing page table
         - Update Radix tree size as per ISA 3.0
      
        mm/hash (Aneesh Kumar K.V):
         - Use the correct PPP mask when updating HPTE
         - Don't add memory coherence if cache inhibited is set
      
        eeh (Gavin Shan):
         - Fix invalid cached PE primary bus
      
        bpf/jit (Naveen N. Rao):
         - Disable classic BPF JIT on ppc64le
      
        .. and fix faults caused by radix patching of SLB miss handler
        (Michael Ellerman)"
      
      * tag 'powerpc-4.7-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        powerpc/bpf/jit: Disable classic BPF JIT on ppc64le
        powerpc: Fix faults caused by radix patching of SLB miss handler
        powerpc/eeh: Fix invalid cached PE primary bus
        powerpc/mm/radix: Update Radix tree size as per ISA 3.0
        powerpc/mm/hash: Don't add memory coherence if cache inhibited is set
        powerpc/mm/hash: Use the correct PPP mask when updating HPTE
        powerpc/mm/radix: Flush page walk cache when freeing page table
        powerpc/mm/radix: Update to tlb functions ric argument
      2f6e9747
    • Michael Ellerman's avatar
      Fix build break in fork.c when THREAD_SIZE < PAGE_SIZE · 9521d399
      Michael Ellerman authored
      Commit b235beea ("Clarify naming of thread info/stack allocators")
      breaks the build on some powerpc configs, where THREAD_SIZE < PAGE_SIZE:
      
        kernel/fork.c:235:2: error: implicit declaration of function 'free_thread_stack'
        kernel/fork.c:355:8: error: assignment from incompatible pointer type
          stack = alloc_thread_stack_node(tsk, node);
          ^
      
      Fix it by renaming free_stack() to free_thread_stack(), and updating the
      return type of alloc_thread_stack_node().
      
      Fixes: b235beea
      
       ("Clarify naming of thread info/stack allocators")
      Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      9521d399
    • Linus Torvalds's avatar
      Merge branch 'akpm' (patches from Andrew) · 086e3eb6
      Linus Torvalds authored
      Merge misc fixes from Andrew Morton:
       "Two weeks worth of fixes here"
      
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (41 commits)
        init/main.c: fix initcall_blacklisted on ia64, ppc64 and parisc64
        autofs: don't get stuck in a loop if vfs_write() returns an error
        mm/page_owner: avoid null pointer dereference
        tools/vm/slabinfo: fix spelling mistake: "Ocurrences" -> "Occurrences"
        fs/nilfs2: fix potential underflow in call to crc32_le
        oom, suspend: fix oom_reaper vs. oom_killer_disable race
        ocfs2: disable BUG assertions in reading blocks
        mm, compaction: abort free scanner if split fails
        mm: prevent KASAN false positives in kmemleak
        mm/hugetlb: clear compound_mapcount when freeing gigantic pages
        mm/swap.c: flush lru pvecs on compound page arrival
        memcg: css_alloc should return an ERR_PTR value on error
        memcg: mem_cgroup_migrate() may be called with irq disabled
        hugetlb: fix nr_pmds accounting with shared page tables
        Revert "mm: disable fault around on emulated access bit architecture"
        Revert "mm: make faultaround produce old ptes"
        mailmap: add Boris Brezillon's email
        mailmap: add Antoine Tenart's email
        mm, sl[au]b: add __GFP_ATOMIC to the GFP reclaim mask
        mm: mempool: kasan: don't poot mempool objects in quarantine
        ...
      086e3eb6