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    SubjectRe: kernel OOPS for XFS in xfs_iget_core (using NFS+SMP+MD)
    I've just come across this oops.  We're running gentoo with a 2.6.11
    kernel, xfs + nfs + lvm (+hardware raid).

    nfsd was not responding, and the load was at 27. the machine was
    responsive, other than nfsd. everything had been responsive for at
    least 9 months previous to this.

    It seems like from what I've read of this thread, most of the other
    reports have been from earlier kernel versions? Is there any
    recommended fix at this point?


    xfs_iget_core: ambiguous vns: vp/0xc54858a0, invp/0xd391aa08
    ------------[ cut here ]------------
    kernel BUG at fs/xfs/support/debug.c:106!
    invalid operand: 0000 [#1]
    Modules linked in: iptable_filter ip_tables usbcore xfs dm_snapshot
    3w_9xxx e1000
    CPU: 0
    EIP: 0060:[<f8dfaa81>] Not tainted VLI
    EFLAGS: 00010246 (2.6.11)
    EIP is at cmn_err+0xa1/0xc0 [xfs]
    eax: f8e0f284 ebx: f8dfdce0 ecx: c03d2890 edx: 00000293
    esi: f8dfd3d7 edi: f8e0fb7e ebp: 00000000 esp: f6e17b34
    ds: 007b es: 007b ss: 0068
    Process nfsd (pid: 6689, threadinfo=f6e17000 task=f7fef530)
    Stack: f8dfd3d7 f8dfd39e f8e0fb40 00000293 f6e17000 f8dfdce0 00000000 e7598760
    f8dc77e0 00000000 f8dfdce0 c54858a0 d391aa08 c3120bf4 482c5825 00000000
    f72d81c0 482c5825 f70afc00 c0172e7c f72d81bc 00000000 00000000 e7598760
    Call Trace:
    [<f8dc77e0>] xfs_iget_core+0x4e0/0x630 [xfs]
    [<c0172e7c>] iget_locked+0xac/0xe0
    [<f8dc7aa4>] xfs_iget+0x174/0x1b0 [xfs]
    [<f8de67d8>] xfs_vget+0x78/0x100 [xfs]
    [<f8df9d63>] vfs_vget+0x43/0x50 [xfs]
    [<f8d8a321>] linvfs_get_dentry+0x51/0x90 [xfs]
    [<c01d6944>] find_exported_dentry+0x44/0x650
    [<c03006b4>] kfree_skbmem+0x24/0x30
    [<c03246a0>] tcp_recvmsg+0x2e0/0x730
    [<c031fed0>] dst_output+0x0/0x30
    [<c0300158>] sock_common_recvmsg+0x58/0x80
    [<c02fc6f3>] sock_recvmsg+0xf3/0x110
    [<c0364a7c>] schedule+0x39c/0xc00
    [<c0116d90>] default_wake_function+0x0/0x20
    [<c0114c38>] recalc_task_prio+0x88/0x150
    [<c0114d90>] activate_task+0x90/0xb0
    [<c0115302>] try_to_wake_up+0x252/0x280
    [<c0116df1>] __wake_up_common+0x41/0x70
    [<c0116e5e>] __wake_up+0x3e/0x60
    [<c01de475>] svc_expkey_lookup+0x3a5/0x410
    [<c035bab2>] svc_sock_enqueue+0x142/0x2a0
    [<f8d8a29a>] linvfs_decode_fh+0x5a/0x90 [xfs]
    [<c01d93a0>] nfsd_acceptable+0x0/0x110
    [<c01d96bc>] fh_verify+0x20c/0x5b0
    [<c01d93a0>] nfsd_acceptable+0x0/0x110
    [<c035efe5>] svcauth_unix_set_client+0xb5/0xd0
    [<c01daf1f>] nfsd_access+0x2f/0x100
    [<c01e28cc>] nfsd3_proc_access+0x8c/0xd0
    [<c01d7947>] nfsd_dispatch+0xd7/0x200
    [<c035b781>] svc_process+0x4b1/0x6a0
    [<c0116d90>] default_wake_function+0x0/0x20
    [<c01d76eb>] nfsd+0x1cb/0x350
    [<c01d7520>] nfsd+0x0/0x350
    [<c01009e5>] kernel_thread_helper+0x5/0x10
    Code: b8 40 fb e0 f8 89 44 24 08 8b 04 ad a0 f2 e0 f8 89 44 24 04 e8
    01 0a 32 c7 8b 54 24 0c b8 84 f2 e0
    f8 e8 93 b8 56 c7 85 ed 75 08 <0f> 0b 6a 00 be d3 df f8 83 c4 10 5b
    5e 5f 5d c3 eb 0d 90 90 90
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      Last update: 2005-08-18 20:51    [W:0.022 / U:8.096 seconds]
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