On Thursday 10 February 2005 03:36, Andrew Morton wrote:
> "Sergey S. Kostyliov" <[EMAIL PROTECTED]> wrote:
> >
> > Here is an oops I've just get on my smp system:
> >
> > Unable to handle kernel NULL pointer dereference at virtual address 0000001c
> > printing eip:
> > c01afe5b
> > *pde = 00000000
> > Oops: 0000 [#1]
> > PREEMPT SMP
> > Modules linked in: ipt_REJECT ipt_state ip_conntrack iptable_filter
> > CPU: 2
> > EIP: 0060:[<c01afe5b>] Not tainted VLI
> > EFLAGS: 00010286 (2.6.10)
> > EIP is at devfsd_close+0x1b/0xc8
> > eax: f7440a00 ebx: 00000000 ecx: c01afe40 edx: ed395280
> > esi: 00000000 edi: f7f17800 ebp: f74f96c8 esp: cdc70f84
> > ds: 007b es: 007b ss: 0068
> > Process megamgr.bin (pid: 12844, threadinfo=cdc70000 task=dd81e520)
> > Stack: ed395280 ed395280 00000000 f7f17800 c0150c76 ee9e87f8 ed395280
> > 00000000
> > f1985c80 cdc70000 c014f50f 00000003 00000003 080caa60 00000000
> > c01024df
> > 00000003 080cc700 bfffe4f8 080caa60 00000000 bfffe4fc 00000006
> > 0000007b
> > Call Trace:
> > [<c0150c76>] __fput+0x106/0x120
> > [<c014f50f>] filp_close+0x4f/0x80
> > [<c01024df>] syscall_call+0x7/0xb
>
> Can you work out what file is being closed? One way of doing that would be
> to work out how megamgr.bin is being invoked and to then run it by hand:
>
> strace -f -o log megamgr.bin <args>
>
> and we can then use the strace output to work out the pathname of the
> offending file.
[EMAIL PROTECTED] rathamahata $ grep 'open(' mg.log
5255 open("/usr/share/terminfo/l/linux", O_RDONLY) = 3
5255 open("/dev/megadev0", O_RDONLY) = 3
[EMAIL PROTECTED] rathamahata $
I guess it's /dev/megadev0 (manually created character device)
[EMAIL PROTECTED] rathamahata $ ls -la /dev/megadev0
crw-r--r-- 1 root root 253, 0 Feb 8 16:26 /dev/megadev0
[EMAIL PROTECTED] rathamahata
--
Sergey S. Kostyliov <[EMAIL PROTECTED]>
Jabber ID: [EMAIL PROTECTED]
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