[Gluster-users] Kernel panic when using FUSE

[Pruner, Anne (Anne)]

Hi,
                I've run into a kernel bug, triggered by using gluster through FUSE.  Wondering if any of you have encountered a similar problem and have worked around it by using an updated version of the kernel, gluster, or FUSE.  Here's the bug:

      KERNEL: /usr/lib/debug/lib/modules/2.6.32-220.el6.x86_64/vmlinux
    DUMPFILE: /var/crash/127.0.0.1-2013-12-21-13:55:32/vmcore  [PARTIAL DUMP]
        CPUS: 64
        DATE: Sat Dec 21 13:52:33 2013
      UPTIME: 16 days, 23:17:25
LOAD AVERAGE: 3.22, 3.36, 3.57
       TASKS: 5598
    NODENAME: uca-amm3.cnda.avaya.com
     RELEASE: 2.6.32-220.el6.x86_64
     VERSION: #1 SMP Wed Nov 9 08:03:13 EST 2011
     MACHINE: x86_64  (2892 Mhz)
      MEMORY: 32 GB
       PANIC: "kernel BUG at fs/inode.c:322!"
         PID: 259
     COMMAND: "kswapd1"
        TASK: ffff880433108b00  [THREAD_INFO: ffff88043310e000]
         CPU: 8
       STATE: TASK_RUNNING (PANIC)

crash> bt
PID: 259    TASK: ffff880433108b00  CPU: 8   COMMAND: "kswapd1"
#0 [ffff88043310f7b0] machine_kexec at ffffffff81031fcb
#1 [ffff88043310f810] crash_kexec at ffffffff810b8f72
#2 [ffff88043310f8e0] oops_end at ffffffff814f04b0
#3 [ffff88043310f910] die at ffffffff8100f26b
#4 [ffff88043310f940] do_trap at ffffffff814efda4
#5 [ffff88043310f9a0] do_invalid_op at ffffffff8100ce35
#6 [ffff88043310fa40] invalid_op at ffffffff8100bedb
    [exception RIP: clear_inode+248]
    RIP: ffffffff81190fb8  RSP: ffff88043310faf0  RFLAGS: 00010202
    RAX: 0000000000000000  RBX: ffff8800245ce980  RCX: 0000000000000001
    RDX: 0000000000000000  RSI: 0000000000000001  RDI: ffff8800245ce980
    RBP: ffff88043310fb00   R8: 0000000000000000   R9: 000000000000000d
    R10: 0000000000000002  R11: 0000000000000001  R12: ffffffff81fbf340
    R13: 0000000000000000  R14: ffff8800888014f8  R15: 0000000000000001
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
#7 [ffff88043310fb08] generic_delete_inode at ffffffff811916f6
#8 [ffff88043310fb38] iput at ffffffff81190612
#9 [ffff88043310fb58] dentry_iput at ffffffff8118d170
#10 [ffff88043310fb78] d_kill at ffffffff8118d2d1
#11 [ffff88043310fb98] __shrink_dcache_sb at ffffffff8118d666
#12 [ffff88043310fc38] shrink_dcache_memory at ffffffff8118d7e9
#13 [ffff88043310fc98] shrink_slab at ffffffff811299aa
#14 [ffff88043310fcf8] balance_pgdat at ffffffff8112c75d
#15 [ffff88043310fe28] kswapd at ffffffff8112caf6
#16 [ffff88043310fee8] kthread at ffffffff81090886
#17 [ffff88043310ff48] kernel_thread at ffffffff8100c14a

                This bug is reported here: http://fuse.996288.n3.nabble.com/Kernel-panic-when-using-fuse-with-distributed-filesystem-while-doing-heavy-i-o-td10373.html, which shows that this bug is reported on two different bugzilla bug reports https://bugzilla.redhat.com/show_bug.cgi?id=644085 and https://bugzilla.kernel.org/show_bug.cgi?id=15927.  All of these reports mention using FUSE with high volume on the 2.6 kernel (which we are using).   There's another entry on the red hat network, but I can't see it (don't have the subscription)  https://access.redhat.com/site/solutions/72383


Thanks,
Anne

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