On Thursday 10 February 2005 12:49, Sergey S. Kostyliov wrote:
> 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 $
Sorry, I forgot this part:
[EMAIL PROTECTED] rathamahata $ grep 'close(' mg.log
5255 close(3) = 0
[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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