On Wed, 2007-06-13 at 14:00 +0200, Maciej Soltysiak wrote:
> Hi,
>
> If anyone is interested I got this OOPS while running a torrent
> (btdownloadcurses)
> application writing directly to a NAS mounted via nfs3.
>
> The client machine is 2.6.21.14 and it is mounted with options:
> wsize=8192,rsize=8192,hard,intr,tcp
Hmm. The Oops says '2.6.20.14-cks1'
Firstly, does that have any extra out-of-tree patches?
Secondly, is it reproducible with 2.6.21 or a more recent kernel?
> After that, the application hung and i am unable to cd into the mounted
> nfs directory
> nor unmount it (busy), nor kill the app (kill -9 fails, process in D state)
>
> Best regards,
> Maciej
>
> BUG: unable to handle kernel paging request at virtual address 5018f248
> printing eip:
> f0a93c94
> *pde = 00000000
> Oops: 0002 [#1]
> Modules linked in: binfmt_misc sit nfs lockd nfs_acl sunrpc w83627ehf
> i2c_isa i2c_viapro i2c_core via_agp agpgart rtc
> CPU: 0
> EIP: 0060:[<f0a93c94>] Not tainted VLI
> EFLAGS: 00010206 (2.6.20.14-cks1 #15)
> EIP is at rpcauth_checkverf+0x34/0x70 [sunrpc]
> eax: d2f4447c ebx: c655d584 ecx: 00000000 edx: f0aa9f60
> esi: e91ea640 edi: d2f44474 ebp: ede2f228 esp: e64b5eec
> ds: 007b es: 007b ss: 0068
> Process rpciod/0 (pid: 1005, ti=e64b4000 task=efe95a90 task.ti=e64b4000)
> Stack: 00000286 ede2f8a0 ede2f8a0 00000286 c655d584 121d0da3 00000820
> f0a8d7fd
> f0a93d60 f08bae07 00000286 c655d5cc 00000286 00000286 f08c0520
> c655d584
> 00000000 c655d5ec f0a93260 f0a9306f efe95a90 ee2d5740 e092ffb0
> c034e11c
> Call Trace:
> [<f0a8d7fd>] call_decode+0x27d/0x5e0 [sunrpc]
> [<f0a93d60>] rpcauth_unbindcred+0x20/0x60 [sunrpc]
> [<f08bae07>] nfs_readpage_result_full+0xf7/0x120 [nfs]
> [<f08c0520>] nfs3_xdr_readres+0x0/0x160 [nfs]
> [<f0a93260>] rpc_async_schedule+0x0/0x10 [sunrpc]
> [<f0a9306f>] __rpc_execute+0x5f/0x250 [sunrpc]
> [<c034e11c>] schedule+0x21c/0x450
> [<c01283aa>] run_workqueue+0x7a/0x110
> [<c0128a07>] worker_thread+0x137/0x160
> [<c01176b0>] default_wake_function+0x0/0x10
> [<c01288d0>] worker_thread+0x0/0x160
> [<c012b329>] kthread+0xa9/0xe0
> [<c012b280>] kthread+0x0/0xe0
> [<c0103a97>] kernel_thread_helper+0x7/0x10
> =======================
> Code: 10 89 5c 24 10 89 c3 89 7c 24 18 89 d7 89 74 24 14 8b 70 28 75 1a 8b
> 4e 08 89 fa 89 d8 ff 51 18 8b 5c 24 10 83 74 24 14 8b 7c 24 <18> 83 c4 1c c3
> 89 74 24 0c 8b 40 10 8b 40 24 8b 40 10 8b 40 08 EIP: [<f0a93c94>]
> rpcauth_checkverf+0x34/0x70 [sunrpc] SS:ESP 0068:e64b5eec
At a first guess, it looks as though something has scribbled over your
credential. Have you tried running this kernel with slab debugging
enabled?
Cheers
Trond
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