Bug#538000: NFS bug in stable kernel
Package: linux-image-2.6.26-2-686
Version: 2.6.26-17
I just upgraded my nas-box with new disks, and took the time to
migrate the OS from Etch to Lenny.
This morning I was rebuilding and testing NFS exports. When I
completed this task, I ran "exportfs -a" to activate all the NFS
shares. I got a very strange error message, which seems to be related
to a kernel bug. More strange : I got this message only for the first
export. I couldn't reproduce it later...
Jul 22 12:44:19 nas kernel: [72230.403919] nfsd: last server has exited
Jul 22 12:44:19 nas kernel: [72230.403919] nfsd: unexporting all filesystems
Jul 22 12:44:20 nas kernel: [72231.548528] NFSD: Using
/var/lib/nfs/v4recovery as the NFSv4 state recovery directory
Jul 22 12:44:20 nas kernel: [72231.548597] NFSD: starting 90-second grace period
Jul 22 12:44:26 nas kernel: [72238.061697] ------------[ cut here ]------------
Jul 22 12:44:26 nas kernel: [72238.061726] kernel BUG at
include/linux/module.h:386!
Jul 22 12:44:26 nas kernel: [72238.061749] invalid opcode: 0000 [#1] SMP
Jul 22 12:44:26 nas kernel: [72238.061775] Modules linked in: xfs nfsd
lockd nfs_acl auth_rpcgss sunrpc exportfs ipv6 dm_mod loop parport_pc
parport snd_pcm snd_timer snd soundcore snd_page_alloc pcspkr psmouse
serio_raw button i2c_i801 i2c_core iTCO_wdt rng_core edac_core shpchp
pci_hotplug intel_agp agpgart evdev ext3 jbd mbcache sd_mod i2o_core
ide_cd_mod cdrom piix ide_pci_generic ide_core floppy ata_generic
dpt_i2o skge e1000 libata scsi_mod dock ehci_hcd uhci_hcd usbcore
thermal processor fan thermal_sys
Jul 22 12:44:26 nas kernel: [72238.062094]
Jul 22 12:44:26 nas kernel: [72238.062110] Pid: 3614, comm: nfsd Not
tainted (2.6.26-2-686 #1)
Jul 22 12:44:26 nas kernel: [72238.062134] EIP: 0060:[<f8bc8489>]
EFLAGS: 00010246 CPU: 0
Jul 22 12:44:26 nas kernel: [72238.062188] EIP is at
svc_recv+0x38f/0x64e [sunrpc]
Jul 22 12:44:26 nas kernel: [72238.062209] EAX: 00000000 EBX: f8bdbd40
ECX: f8bdbd40 EDX: 00000100
Jul 22 12:44:26 nas kernel: [72238.062232] ESI: f7886400 EDI: f6b45f9c
EBP: c4014000 ESP: f6b45f8c
Jul 22 12:44:26 nas kernel: [72238.062255] DS: 007b ES: 007b FS: 00d8
GS: 0000 SS: 0068
Jul 22 12:44:26 nas kernel: [72238.062277] Process nfsd (pid: 3614,
ti=f6b44000 task=f7a1b980 task.ti=f6b44000)
Jul 22 12:44:26 nas kernel: [72238.062301] Stack: 000dbba0 f7a8b600
f7a13d00 f7daa840 00000000 f7a1b980 c011b6ce 00100100
Jul 22 12:44:26 nas kernel: [72238.062364] 00200200 f783a8c0
f8bfaa8f 00000000 c4014000 f8be1691 fffffeff ffffffff
Jul 22 12:44:26 nas kernel: [72238.062426] fffffef8 ffffffff
f8be15bb 00000000 00000000 00000000 c01044f3 c4014000
Jul 22 12:44:26 nas kernel: [72238.062487] Call Trace:
Jul 22 12:44:26 nas kernel: [72238.062520] [<c011b6ce>]
default_wake_function+0x0/0x8
Jul 22 12:44:26 nas kernel: [72238.062554] [<f8be1691>] nfsd+0xd6/0x269 [nfsd]
Jul 22 12:44:26 nas kernel: [72238.062598] [<f8be15bb>] nfsd+0x0/0x269 [nfsd]
Jul 22 12:44:26 nas kernel: [72238.062638] [<c01044f3>]
kernel_thread_helper+0x7/0x10
Jul 22 12:44:26 nas kernel: [72238.062669] =======================
Jul 22 12:44:26 nas kernel: [72238.062687] Code: 01 00 00 8b 44 24 04
8b 50 04 ff 52 04 85 c0 89 c6 0f 84 25 01 00 00 8b 00 8b 58 04 85 db
74 1f 89 d8 e8 b2 49 57 c7 85 c0 75 04 <0f> 0b eb fe 64 a1 04 40 3b c0
c1 e0 05 ff 84 18 00 01 00 00 8b
Jul 22 12:44:26 nas kernel: [72238.062954] EIP: [<f8bc8489>]
svc_recv+0x38f/0x64e [sunrpc] SS:ESP 0068:f6b45f8c
Jul 22 12:44:26 nas kernel: [72238.063351] ---[ end trace 0bbcb6ca27fbf387 ]---
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