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[EMAIL PROTECTED] wrote:
> Hi Jorgen,
>
> "Jrgen_P._Tjern":
>> I'm not sure what triggered this, but I guess I should post it just in case.
>
> What is your kernel version and aufs's?
> If you can, please apply this debug patch and let me know the result.
> The patch is for finding out where the BUG happened in a function.
>
After boot of nfs client:
[EMAIL PROTECTED]:~# dmesg|tail -n 5
[52425.250149] skge eth2: Link is up at 100 Mbps, full duplex, flow
control both
[52425.349766] br0: port 3(eth2) entering learning state
[52425.353753] br0: topology change detected, propagating
[52425.353755] br0: port 3(eth2) entering forwarding state
[52455.193058] aufs aufs_encode_fh:564:nfsd[2966]: set default
find_exported_dentry for xfs
[EMAIL PROTECTED]:~# reboot
The system is going down for reboot NOW!
[EMAIL PROTECTED]:~# logout
After reboot of NFS server:
[ 58.234729] skge eth2: Link is up at 100 Mbps, full duplex, flow
control both
[ 58.333991] br0: port 3(eth2) entering learning state
[ 58.337976] br0: topology change detected, propagating
[ 58.337978] br0: port 3(eth2) entering forwarding state
[ 81.300262] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state
recovery directory
[ 81.391964] NFSD: starting 90-second grace period
[ 84.050123] BUG: unable to handle kernel NULL pointer dereference at
virtual address 00000000
[ 84.056266] printing eip:
[ 84.059253] 00000000
[ 84.059255] *pde = 00000000
[ 84.062397] Oops: 0000 [#1]
[ 84.065384] SMP
[ 84.068387] Modules linked in: aufs skge sata_via sata_promise
[ 84.071529] CPU: 0
[ 84.071530] EIP: 0060:[<00000000>] Not tainted VLI
[ 84.071531] EFLAGS: 00010297 (2.6.20.3 #8)
[ 84.080428] EIP is at 0x0
[ 84.083414] eax: f7932760 ebx: c05e4a00 ecx: 00000000 edx: f6ddbd94
[ 84.086483] esi: f7932760 edi: f7932760 ebp: f6ddbdac esp: f6ddbd78
[ 84.089552] ds: 007b es: 007b ss: 0068
[ 84.092566] Process nfsd (pid: 2964, ti=f6dda000 task=f7b72a90
task.ti=f6dda000)
[ 84.095495] Stack: c02eb98d f90da8b0 00000000 f6ddbd9c c017871a
f7952248 f6ddbd9c 0000000e
[ 84.101677] 00000000 0000a178 00000000 c02eb920 00000001
f6ddbe88 f90db78a 00000001
[ 84.107857] f90da8b0 00000000 80000000 c042eb69 00000000
00000001 ffffffff c1806d40
[ 84.113923] Call Trace:
[ 84.119841] [<c010408a>] show_trace_log_lvl+0x1a/0x30
[ 84.122900] [<c0104151>] show_stack_log_lvl+0xb1/0xe0
[ 84.125955] [<c0104341>] show_registers+0x1c1/0x2b0
[ 84.128855] [<c010454c>] die+0x11c/0x270
[ 84.131888] [<c0114def>] do_page_fault+0x2af/0x580
[ 84.134937] [<c04b60b4>] error_code+0x7c/0x84
[ 84.137978] [<f90db78a>] aufs_decode_fh+0x83a/0xf10 [aufs]
[ 84.141059] [<c021fc03>] fh_verify+0x213/0x590
[ 84.144000] [<c022021c>] nfsd_access+0x1c/0x100
[ 84.147010] [<c02279be>] nfsd3_proc_access+0x8e/0xf0
[ 84.150062] [<c021cb48>] nfsd_dispatch+0x88/0x1d0
[ 84.153108] [<c049f7d6>] svc_process+0x3b6/0x710
[ 84.156156] [<c021d1c4>] nfsd+0x164/0x280
[ 84.159189] [<c0103ca3>] kernel_thread_helper+0x7/0x14
[ 84.162095] =======================
[ 84.165097] Code: Bad EIP value.
[ 84.168130] EIP: [<00000000>] 0x0 SS:ESP 0068:f6ddbd78
[ 84.171204] <1>BUG: unable to handle kernel NULL pointer dereference
at virtual address 00000000
[ .. snip .. ]
It seems this kernel BUG repeats infinitely. This is with your supplied
patch to export.c.
Kindest regards, Jørgen P. Tjernø. :-)
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