Hardware is:
2P Xeon 2.8GHz
2GB memory
JBOD with 13 disks
  3 md volumes:
    md0: 7 disks RAID0
    md1: 4 disks RAID5
    md2: 2 disks RAID0
Adaptec AIC-7899 U160 SCSI controller
Broadcom BCM-5701 gigabit network interface

XFS setup:
$ xfs_info /dev/md0
meta-data=/mnt/vol102            isize=256    agcount=60, agsize=1048576 blks
         =                       sectsz=512
data     =                       bsize=4096   blocks=62229552, imaxpct=25
         =                       sunit=8      swidth=56 blks, unwritten=1
naming   =version 2              bsize=4096
log      =internal               bsize=4096   blocks=30392, version=1
         =                       sectsz=512   sunit=0 blks
realtime =none                   extsz=229376 blocks=0, rtextents=0
$ xfs_info /dev/md1
meta-data=/mnt/vol101            isize=256    agcount=103, agsize=1048576 blks
         =                       sectsz=512
data     =                       bsize=4096   blocks=107528976, imaxpct=25
         =                       sunit=8      swidth=24 blks, unwritten=1
naming   =version 2              bsize=4096
log      =internal               bsize=4096   blocks=32768, version=1
         =                       sectsz=512   sunit=0 blks
realtime =none                   extsz=98304  blocks=0, rtextents=0
$ xfs_info /dev/md2
meta-data=/mnt/vol55             isize=256    agcount=17, agsize=1048568 blks
         =                       sectsz=512
data     =                       bsize=4096   blocks=17779872, imaxpct=25
         =                       sunit=8      swidth=16 blks, unwritten=1
naming   =version 2              bsize=4096
log      =internal               bsize=4096   blocks=8688, version=1
         =                       sectsz=512   sunit=0 blks
realtime =none                   extsz=65536  blocks=0, rtextents=0

/var/log/messages snippets:
Linux 2.4.22 SMP + xfs-2.4.22 patches 
=====================================
Dec 24 12:44:49 foobar kernel: xfs_inotobp: xfs_imap()  returned an error 22 on md(9,1).  Returning error.
Dec 24 12:44:49 foobar kernel: xfs_iunlink_remove: xfs_inotobp()  returned an error 22 on md(9,1).  Returning error.
Dec 24 12:44:49 foobar kernel: xfs_inactive:^Ixfs_ifree() returned an error = 22 on md(9,1)
Dec 24 12:44:49 foobar kernel: xfs_force_shutdown(md(9,1),0x1) called from line 1873 of file xfs_vnodeops.c.  Return address = 0xf89f5ee6
Dec 24 12:44:49 foobar kernel: Filesystem "md(9,1)": I/O Error Detected.  Shutting down filesystem: md(9,1)
Dec 24 12:44:49 foobar kernel: Please umount the filesystem, and rectify the problem(s)
Jan  6 16:00:05 foobar kernel: Filesystem "md(9,0)": xfs_log_write: reservation ran out. Need to up reservation
Jan  6 16:00:05 foobar kernel: xfs_force_shutdown(md(9,0),0x8) called from line 1715 of file xfs_log.c.  Return address = 0xf89f5ee6
Jan  6 16:00:05 foobar kernel: Filesystem "md(9,0)": Corruption of in-memory data detected.  Shutting down filesystem: md(9,0)
Jan  6 16:00:05 foobar kernel: Please umount the filesystem, and rectify the problem(s)
Jan  6 16:00:05 foobar kernel: xfs_force_shutdown(md(9,0),0x2) called from line 1297 of file xfs_log.c.  Return address = 0xf89f5ee6
Jan  9 09:40:27 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_GOTO at line 866 of file xfs_ialloc.c.  Caller 0xf89ca7d1
Jan  9 09:40:27 foobar kernel: d4b55b8c f89c47b9 f8a11f75 00000001 00000000 f8a11f68 00000362 f89ca7d1
Jan  9 09:40:27 foobar kernel:        0803ae90 00000000 00000001 00000000 00001000 00000001 00000018 00000000
Jan  9 09:40:27 foobar kernel:        00000005 000000f0 0000002f 00000008 0003ae90 0000a205 00000000 00000000
Jan  9 09:40:27 foobar kernel: Call Trace: [<f89c47b9>]  [<f8a11f75>]  [<f8a11f68>]  [<f89ca7d1>]  [<f89f6c56>]  [<f89ca7d1>]  [<f89e04bd>]  [<f89dd4dd>]  [<f89e6307>]  [<f8a119e0>]  [<f89f277a>]  [<f89e23cb>]  [<f89c8ad3>]  [<f8a20f00>]  [<c015a3d4>]  [<f89f5e01>]  [<f89f5809>]  [<f89f290b>]  [<c014fca5>]  [<c019b3fa>]  [<c01a058d>]  [<c0197107>]  [<c02995f8>] [<c0196f0b>]  [<c0196d10>]  [<c0107296>]  [<c0196d10>]
Jan  9 09:40:27 foobar kernel: nfsd: non-standard errno: -990
Jan  9 11:57:24 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_GOTO at line 866 of file xfs_ialloc.c.  Caller 0xf89ca7d1
Jan  9 11:57:24 foobar kernel: d4af7b8c f89c47b9 f8a11f75 00000001 00000000 f8a11f68 00000362 f89ca7d1
Jan  9 11:57:24 foobar kernel:        0803ae90 00000000 00000001 00000000 d1466000 00000000 00000018 c0259824
Jan  9 11:57:24 foobar kernel:        f6c11de0 c4d12580 0000002f 00000008 0003ae90 00000000 d1466000 00000000
Jan  9 11:57:24 foobar kernel: Call Trace: [<f89c47b9>]  [<f8a11f75>]  [<f8a11f68>]  [<f89ca7d1>]  [<c0259824>]  [<c0263238>]  [<f89ca7d1>]  [<f89e04bd>]  [<f89dd4dd>]  [<f89e6307>]  [<f8a119e0>]  [<f89f277a>]  [<f89e23cb>]  [<f89c8ad3>]  [<f8a20f00>]  [<c015a3d4>]  [<f89f5e01>]  [<f89f5809>]  [<f89f290b>]  [<c014fca5>]  [<c019b3fa>]  [<c01a058d>]  [<c0197107>] [<c02995f8>]  [<c0196f0b>]  [<c0196d10>]  [<c0107296>]  [<c0196d10>]
Jan  9 11:57:24 foobar kernel: nfsd: non-standard errno: -990
Jan  9 14:11:25 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_RETURN at line 295 of file xfs_alloc.c.  Caller 0xf899559d
Jan  9 14:11:25 foobar kernel: c44ada00 f89947bd f8a11a09 00000001 00000000 f8a119fd 00000127 f899559d
Jan  9 14:11:25 foobar kernel:        00000000 00000000 00000000 0000000c ca23789c ca237920 00091e18 f899559d
Jan  9 14:11:25 foobar kernel:        ca23789c ca237920 00091e18 00000010 00091e1c 0000000c 00000001 0009203c
Jan  9 14:11:25 foobar kernel: Call Trace: [<f89947bd>]  [<f8a11a09>]  [<f8a119fd>]  [<f899559d>]  [<f899559d>]  [<c0263238>]  [<c0264300>]  [<f8994896>]  [<f8996eaa>]  [<f89a4501>]  [<c0273a80>]  [<c024f22f>]  [<f89ad83c>]  [<f89a5f14>]  [<f89a780d>]  [<f89a5f14>]  [<f89d11c4>]  [<f89d0456>]  [<f89dd400>]  [<f89a6b70>]  [<f89f2127>]  [<c01cf65a>]  [<c01cf3cc>] [<f89f151a>]  [<f89f162e>]  [<c01cea47>]  [<f89ecb1f>]  [<f89ed69b>]  [<c01cf65a>]  [<f89eddbb>]  [<c014493a>]  [<c014836b>]  [<c0105000>]  [<c0105000>]  [<c0107296>]  [<c01482d0>] 
Jan 12 08:08:08 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_GOTO at line 866 of file xfs_ialloc.c.  Caller 0xf89ca7d1
Jan 12 08:08:08 foobar kernel: d4b91b8c f89c47b9 f8a11f75 00000001 00000000 f8a11f68 00000362 f89ca7d1
Jan 12 08:08:08 foobar kernel:        21000c16 00000000 00000001 00000000 c025e407 43011dac 00000018 00000000
Jan 12 08:08:08 foobar kernel:        00000018 00000006 00000056 00000021 00000c16 d5122c20 00000296 00000000
Jan 12 08:08:08 foobar kernel: Call Trace: [<f89c47b9>]  [<f8a11f75>]  [<f8a11f68>]  [<f89ca7d1>]  [<c025e407>]  [<c0114b4a>]  [<f89ca7d1>]  [<f89e04bd>]  [<f89dd4dd>]  [<f89e6307>]  [<f8a119e0>]  [<f89f277a>]  [<f89e23cb>]  [<f89c8ad3>]  [<f8a20f00>]  [<c015a3d4>]  [<f89f5e01>]  [<f89f5809>]  [<f89f290b>]  [<c014fca5>]  [<c019b3fa>]  [<c01a058d>]  [<c0197107>] [<c02995f8>]  [<c0196f0b>]  [<c0196d10>]  [<c0107296>]  [<c0196d10>]
Jan 12 08:08:08 foobar kernel: nfsd: non-standard errno: -990

Added ikeep mount option.
Linux 2.4.24 SMP + xfs-2.4.23 patches
=====================================
Jan 20 08:50:54 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_GOTO at line 866 of file xfs_ialloc.c.  Caller 0xf89cb7d1
Jan 20 08:50:54 foobar kernel: f5497b8c f89c57b9 f8a11e55 00000001 00000000 f8a11e48 00000362 f89cb7d1
Jan 20 08:50:54 foobar kernel:        4d164a94 00000000 00000001 00000000 00000000 00000001 00000018 ffffffff
Jan 20 08:50:54 foobar kernel:        00000000 00000000 00000047 0000004d 00164a94 c2908400 039d3000 00000000
 Jan 20 08:50:54 foobar kernel: Call Trace: [<f89c57b9>]  [<f8a11e55>]  [<f8a11e48>]  [<f89cb7d1>]  [<f89cb7d1>]  [<f89e14dd>]  [<f89de4fd>]  [<f89e7337>]  [<f8a118c0>]  [<f89f391a>]  [<f89e33cb>]  [<f89c9ad3>]  [<c0154984>]  [<f89f6ee1>]  [<f89f68e9>]  [<f89f3aab>]  [<c014a2d5>]  [<c019598a>]  [<c019ab2d>]  [<c0191687>]  [<c0299818>]  [<c019148b>]  [<c0191290>] [<c0107276>]  [<c0191290>]
Jan 20 08:50:54 foobar kernel: nfsd: non-standard errno: -990
Jan 20 09:21:26 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_GOTO at line 866 of file xfs_ialloc.c.  Caller 0xf89cb7d1
Jan 20 09:21:26 foobar kernel: f549db8c f89c57b9 f8a11e55 00000001 00000000 f8a11e48 00000362 f89cb7d1
Jan 20 09:21:26 foobar kernel:        4b0035b5 00000000 00000001 00000000 00000000 f5a29400 00000018 00000000
Jan 20 09:21:26 foobar kernel:        00000000 00000001 00000056 0000004b 000035b5 000001c4 f89c9ad3 00000000
Jan 20 09:21:26 foobar kernel: Call Trace: [<f89c57b9>]  [<f8a11e55>]  [<f8a11e48>]  [<f89cb7d1>]  [<f89c9ad3>]  [<f89cb7d1>]  [<f89e14dd>]  [<f89de4fd>]  [<f89e7337>]  [<f8a118c0>]  [<f89f391a>]  [<f89e33cb>]  [<f89c9ad3>]  [<c0154984>]  [<f89f6ee1>]  [<f89f68e9>]  [<f89f3aab>]  [<c014a2d5>]  [<c019598a>]  [<c019ab2d>]  [<c0191687>]  [<c0299818>]  [<c019148b>] [<c0191290>]  [<c0107276>]  [<c0191290>]
Jan 20 09:21:26 foobar kernel: nfsd: non-standard errno: -990
Jan 20 16:23:34 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_GOTO at line 1634 of file xfs_alloc.c.  Caller 0xf8997fe2
Jan 20 16:23:34 foobar kernel: e67e5d28 f8997289 f8a11903 00000001 00000000 f8a118dd 00000662 f8997fe2
Jan 20 16:23:34 foobar kernel:        f55fb800 e6cf2a6c e6cf285c 00091e88 000000ab 00000001 00091e18 00000010
Jan 20 16:23:34 foobar kernel:        00000000 00000001 f35c2da0 e6cf8c04 e6cf8c04 e6cf5f0c f8997fe2 e6cf8c04
Jan 20 16:23:34 foobar kernel: Call Trace: [<f8997289>]  [<f8a11903>]  [<f8a118dd>]  [<f8997fe2>]  [<f8997fe2>]  [<f89f7e4d>]  [<f89a7630>]  [<f89cbf37>]  [<f89e5d82>]  [<f89f3758>]  [<f8a20de0>]  [<f89f7736>]  [<f89f6370>]  [<c015400a>]  [<c0154a96>]  [<c01528d6>]  [<c014a9be>]  [<c014951a>]  [<c014aa89>]  [<c0108c23>]
Jan 20 16:23:34 foobar kernel: xfs_force_shutdown(md(9,0),0x8) called from line 4046 of file xfs_bmap.c.  Return address = 0xf89f6fc6
Jan 20 16:23:34 foobar kernel: Filesystem "md(9,0)": Corruption of in-memory data detected.  Shutting down filesystem: md(9,0)
Jan 20 16:23:34 foobar kernel: Please umount the filesystem, and rectify the problem(s)
Jan 20 21:05:01 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_GOTO at line 866 of file xfs_ialloc.c.  Caller 0xf89cb7d1
Jan 20 21:05:01 foobar kernel: f5d93b8c f89c57b9 f8a11e55 00000001 00000000 f8a11e48 00000362 f89cb7d1
Jan 20 21:05:01 foobar kernel:        4b0035b5 00000000 00000001 00000000 c0251659 f76af0c0 00000018 c033f450
Jan 20 21:05:01 foobar kernel:        00000020 00000042 0000003f 0000004b 000035b5 f76af0c0 c607b2d4 00000000
Jan 20 21:05:01 foobar kernel: Call Trace: [<f89c57b9>]  [<f8a11e55>]  [<f8a11e48>]  [<f89cb7d1>]  [<c0251659>]  [<f89cb7d1>]  [<f89e14dd>]  [<f89de4fd>]  [<f89e7337>]  [<f8a118c0>]  [<f89f391a>]  [<f89e33cb>]  [<f89c9ad3>]  [<c0154984>]  [<f89f6ee1>]  [<f89f68e9>]  [<f89f3aab>]  [<c014a2d5>]  [<c019598a>]  [<c019ab2d>]  [<c0191687>]  [<c0299818>]  [<c019148b>] [<c0191290>]  [<c0107276>]  [<c0191290>]
Jan 20 21:05:01 foobar kernel: nfsd: non-standard errno: -990
Jan 20 21:16:06 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_GOTO at line 866 of file xfs_ialloc.c.  Caller 0xf89cb7d1
Jan 20 21:16:06 foobar kernel: f5d3fb8c f89c57b9 f8a11e55 00000001 00000000 f8a11e48 00000362 f89cb7d1
Jan 20 21:16:06 foobar kernel:        48be1c1e 00000000 00000001 00000000 00001000 00000001 00000018 00000000
Jan 20 21:16:06 foobar kernel:        00000005 000000f0 00000047 00000048 00be1c1e 0000a205 00000000 00000000
Jan 20 21:16:06 foobar kernel: Call Trace: [<f89c57b9>]  [<f8a11e55>]  [<f8a11e48>]  [<f89cb7d1>]  [<f89f7d46>]  [<f89cb7d1>]  [<f89b7b8d>]  [<f89e14dd>]  [<f89de4fd>]  [<f89e7337>]  [<f8a118c0>]  [<f89f391a>]  [<f89e33cb>]  [<f89c9ad3>]  [<c0154984>]  [<f89f6ee1>]  [<f89f68e9>]  [<f89f3aab>]  [<c014a2d5>]  [<c019598a>]  [<c019ab2d>]  [<c0191687>]  [<c0299818>] [<c019148b>]  [<c0191290>]  [<c0107276>]  [<c0191290>]
Jan 20 21:16:06 foobar kernel: nfsd: non-standard errno: -990
Jan 20 21:42:26 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_GOTO at line 866 of file xfs_ialloc.c.  Caller 0xf89cb7d1
Jan 20 21:42:26 foobar kernel: f5d8fb8c f89c57b9 f8a11e55 00000001 00000000 f8a11e48 00000362 f89cb7d1
Jan 20 21:42:26 foobar kernel:        48be1c1e 00000000 00000001 00000000 00000000 f5fab000 00000018 00000000
Jan 20 21:42:26 foobar kernel:        00000000 00000001 00000056 00000048 00be1c1e 000001c4 f89df7f2 00000000
Jan 20 21:42:26 foobar kernel: Call Trace: [<f89c57b9>]  [<f8a11e55>]  [<f8a11e48>]  [<f89cb7d1>]  [<f89df7f2>]  [<f89cb7d1>]  [<f89e14dd>]  [<f89de4fd>]  [<f89e7337>]  [<f8a118c0>]  [<f89f391a>]  [<f89e33cb>]  [<f89c9ad3>]  [<c0154984>]  [<f89f6ee1>]  [<f89f68e9>]  [<f89f3aab>]  [<c014a2d5>]  [<c019598a>]  [<c019ab2d>]  [<c0191687>]  [<c0299818>]  [<c019148b>] [<c0191290>]  [<c0107276>]  [<c0191290>]
Jan 20 21:42:26 foobar kernel: nfsd: non-standard errno: -990
Jan 21 01:04:41 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_GOTO at line 866 of file xfs_ialloc.c.  Caller 0xf89cb7d1
Jan 21 01:04:41 foobar kernel: f5d59b8c f89c57b9 f8a11e55 00000001 00000000 f8a11e48 00000362 f89cb7d1
Jan 21 01:04:41 foobar kernel:        4b0035b5 00000000 00000001 00000000 00000000 f5fab000 00000018 00000000
Jan 21 01:04:41 foobar kernel:        00000000 e02b24ec 0000003f 0000004b 000035b5 c02633f4 ca0458a0 00000000
Jan 21 01:04:41 foobar kernel: Call Trace: [<f89c57b9>]  [<f8a11e55>]  [<f8a11e48>]  [<f89cb7d1>]  [<c02633f4>]  [<f89cb7d1>]  [<c0136995>]  [<f89e14dd>]  [<f89de4fd>]  [<f89e7337>]  [<f8a118c0>]  [<f89f391a>]  [<f89e33cb>]  [<f89c9ad3>]  [<c0154984>]  [<f89f6ee1>]  [<f89f68e9>]  [<f89f3aab>]  [<c014a2d5>]  [<c019598a>]  [<c019ab2d>]  [<c0191687>]  [<c0299818>] [<c019148b>]  [<c0191290>]  [<c0107276>]  [<c0191290>]
Jan 21 01:04:41 foobar kernel: nfsd: non-standard errno: -990
Jan 21 01:08:02 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_GOTO at line 866 of file xfs_ialloc.c.  Caller 0xf89cb7d1
Jan 21 01:08:02 foobar kernel: f5d55b8c f89c57b9 f8a11e55 00000001 00000000 f8a11e48 00000362 f89cb7d1
Jan 21 01:08:02 foobar kernel:        4cd07e81 00000000 00000001 00000000 00000000 f5fab000 00000018 00000000
Jan 21 01:08:02 foobar kernel:        00000000 00000001 00000047 0000004c 00d07e81 000001c4 f89c9ad3 00000000
Jan 21 01:08:02 foobar kernel: Call Trace: [<f89c57b9>]  [<f8a11e55>]  [<f8a11e48>]  [<f89cb7d1>]  [<f89c9ad3>]  [<f89cb7d1>]  [<f89e14dd>]  [<f89de4fd>]  [<f89e7337>]  [<f8a118c0>]  [<f89f391a>]  [<f89e33cb>]  [<f89c9ad3>]  [<c0154984>]  [<f89f6ee1>]  [<f89f68e9>]  [<f89f3aab>]  [<c014a2d5>]  [<c019598a>]  [<c019ab2d>]  [<c0191687>]  [<c0299818>]  [<c019148b>] [<c0191290>]  [<c0107276>]  [<c0191290>]
Jan 21 01:08:02 foobar kernel: nfsd: non-standard errno: -990
Jan 21 01:23:46 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_GOTO at line 866 of file xfs_ialloc.c.  Caller 0xf89cb7d1
Jan 21 01:23:46 foobar kernel: f5877b8c f89c57b9 f8a11e55 00000001 00000000 f8a11e48 00000362 f89cb7d1
Jan 21 01:23:46 foobar kernel:        4cd07e81 00000000 00000001 00000000 00001000 00000001 00000018 00000000
Jan 21 01:23:46 foobar kernel:        00000005 000000f0 00000056 0000004c 00d07e81 0000a205 00000000 00000000
Jan 21 01:23:46 foobar kernel: Call Trace: [<f89c57b9>]  [<f8a11e55>]  [<f8a11e48>]  [<f89cb7d1>]  [<f89f7d46>]  [<f89cb7d1>]  [<f89b7b8d>]  [<f89e14dd>]  [<f89de4fd>]  [<f89e7337>]  [<f8a118c0>]  [<f89f391a>]  [<f89e33cb>]  [<f89c9ad3>]  [<c0154984>]  [<f89f6ee1>]  [<f89f68e9>]  [<f89f3aab>]  [<c014a2d5>]  [<c019598a>]  [<c019ab2d>]  [<c0191687>]  [<c0299818>] [<c019148b>]  [<c0191290>]  [<c0107276>]  [<c0191290>]
Jan 21 01:23:46 foobar kernel: nfsd: non-standard errno: -990
Jan 21 06:23:18 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_GOTO at line 866 of file xfs_ialloc.c.  Caller 0xf89ca7d1
Jan 21 06:23:18 foobar kernel: f603bb8c f89c47b9 f8a11f75 00000001 00000000 f8a11f68 00000362 f89ca7d1
Jan 21 06:23:18 foobar kernel:        4cd07e81 00000000 00000001 00000000 f5c938c0 f7fcba40 00000018 f7fcba40
Jan 21 06:23:18 foobar kernel:        c0264300 f603bca8 0000003f 0000004c 00d07e81 00000040 f5c938c0 00000000
Jan 21 06:23:18 foobar kernel: Call Trace: [<f89c47b9>]  [<f8a11f75>]  [<f8a11f68>]  [<f89ca7d1>]  [<c0264300>]  [<f89ca7d1>]  [<f89e04bd>]  [<f89dd4dd>]  [<f89e6307>]  [<f8a119e0>]  [<f89f277a>]  [<f89e23cb>]  [<f89c8ad3>]  [<f8a20f00>]  [<c015a3d4>]  [<f89f5e01>]  [<f89f5809>]  [<f89f290b>]  [<c014fca5>]  [<c019b3fa>]  [<c01a058d>]  [<c0197107>]  [<c02995f8>] [<c0196f0b>]  [<c0196d10>]  [<c0107296>]  [<c0196d10>]
Jan 21 06:23:18 foobar kernel: nfsd: non-standard errno: -990
Jan 21 06:33:41 foobar kernel: XFS internal error XFS_WANT_CORRUPTED_GOTO at line 866 of file xfs_ialloc.c.  Caller 0xf89ca7d1
Jan 21 06:33:41 foobar kernel: f6015b8c f89c47b9 f8a11f75 00000001 00000000 f8a11f68 00000362 f89ca7d1
Jan 21 06:33:41 foobar kernel:        4cd07e81 00000000 00000001 00000000 c2dcd800 c2dcd800 00000018 c2dcd800
Jan 21 06:33:41 foobar kernel:        c0264300 f6015ca8 00000047 0000004c 00d07e81 c47ab308 e9207acc 00000000
Jan 21 06:33:41 foobar kernel: Call Trace: [<f89c47b9>]  [<f8a11f75>]  [<f8a11f68>]  [<f89ca7d1>]  [<c0264300>]  [<f89ca7d1>]  [<f89e04bd>]  [<f89dd4dd>]  [<f89e6307>]  [<f8a119e0>]  [<f89f277a>]  [<f89e23cb>]  [<f89c8ad3>]  [<f8a20f00>]  [<c015a3d4>]  [<f89f5e01>]  [<f89f5809>]  [<f89f290b>]  [<c014fca5>]  [<c019b3fa>]  [<c01a058d>]  [<c0197107>]  [<c02995f8>] [<c0196f0b>]  [<c0196d10>]  [<c0107296>]  [<c0196d10>]
Jan 21 06:33:41 foobar kernel: nfsd: non-standard errno: -990