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SubjectRe: [OOPS] 2.5.53 NFS (rpc.mountd)
On Sunday February 16, david+cert@blue-labs.org wrote:
> The below is what can happen infrequently after the following has occured:
>
> 1) client loses love with server (df reports 1 for all filesystem stats)
> 2) admin runs 'exportfs -vra' on server
> 3) client gets love and server burps:

Can you produce this on a more recent kernel? A lot has happened
since 2.5.53. I cannot point to some particular patch and say 'this
fixes it', but I would be happier spending the time to chase it down
if I knew it was still relevant.

NeilBrown

>
> Unable to handle kernel paging request at virtual address 6b6b6b87
> printing eip:
> c0378b4d
> *pde = 00000000
> Oops: 0000
> CPU: 0
> EIP: 0060:[<c0378b4d>] Not tainted
> EFLAGS: 00010202
> EIP is at auth_unix_lookup+0x3d/0x88
> eax: 6b6b6b6b ebx: dbdd7b60 ecx: caf3677c edx: 6b6b6b6b
> esi: 00000000 edi: dcf85f58 ebp: dbdd7b44 esp: dbdd7b1c
> ds: 0068 es: 0068 ss: 0068
> Process rpc.mountd (pid: 3677, threadinfo=dbdd6000 task=ddc70760)
> Stack: dbdd7b60 dcf85ed0 dbdd7b40 c013d5de dffff600 dcf85ed0 c04067f8
> 0600000a
> 00000060 dbdd7f78 dbdd7f78 c01b695d 0600000a 00000008 d6e24914
> 00000060
> dcf85ed4 ad030002 0600000a 00000000 00000000 6961722f 6f682f64
> 642f656d
> Call Trace:
> [<c013d5de>] kmalloc+0xaa/0x128
> [<c01b695d>] write_getfs+0xbd/0x17c
> [<c01b65b1>] fs_write+0x31/0x38
> [<c017ac3c>] sys_nfsservctl+0xb4/0xf8
> [<c0109283>] syscall_call+0x7/0xb
>
> Code: 8b 40 1c 29 d0 85 c0 7e 0a b8 01 00 00 00 f0 0f ab 41 10 8b
>
> --
> I may have the information you need and I may choose only HTML. It's up to you. Disclaimer: I am not responsible for any email that you send me nor am I bound to any obligation to deal with any received email in any given fashion. If you send me spam or a virus, I may in whole or part send you 50,000 return copies of it. I may also publically announce any and all emails and post them to message boards, news sites, and even parody sites. I may also mark them up, cut and paste, print, and staple them to telephone poles for the enjoyment of people without internet access. This is not a confidential medium and your assumption that your email can or will be handled confidentially is akin to baring your backside, burying your head in the ground, and thinking nobody can see you butt nekkid and in plain view for miles away. Don't be a cluebert, buy one from K-mart today.
>
> When it absolutely, positively, has to be destroyed overnight.
> AIR FORCE
>
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