Re: Kernel oops in tcp_ipv4.c

[Patrick <patrick@spacesurfer.com>]

Mike Galbraith wrote:
> 
> On Fri, 12 Jan 2001, Patrick wrote:
> 
> > I am running a medium-high traffic web server on an SMP machine. I have
> > always had problems with linux hanging (No syslog messages and no
> > console response). I have tried kernel versions 2.2.12, 2.2.14 and
> > 2.2.16
> > Recently I tried 2.2.17, this kernel was up for about a month, before
> > there was a kernel oops. The syslog messages are:
> >
> > Jan 11 21:10:06 ws2 kernel: tcp_v4_hash: bug, socket state is 1
> > Jan 11 21:10:06 ws2 kernel: Unable to handle kernel NULL pointer
> > dereference at virtual address 00000000
> > Jan 11 21:10:06 ws2 kernel: current->tss.cr3 = 0ca7c000, %cr3 = 0ca7c000
> > Jan 11 21:10:06 ws2 kernel: *pde = 00000000
> > Jan 11 21:10:06 ws2 kernel: Oops: 0002
> > Jan 11 21:10:06 ws2 kernel: CPU:    0
> >
> > The code that outputs the first message is in tcp_ipv4.c, and was added
> > in version 2.2.17. The code deliberately causes a kernel oops when it
> > encounters this bug, presumably because the IP stack is unusable at this
> > point.
> >
> > If this code was deliberately added then presumably someone knows what
> > might cause the problem. Is there a patch somewhere that fixes this
> > problem?
> 
> Hi,
> 
> You should post the full processed oops.. what the trap is there for ;-)
> 
>         -Mike

Hello Mike,

How do I process the oops? Are kernel core dumps generated when there is
an oops and if so where is the core file?

regards,
Patrick
-- 
Patrick Mackinlay                                patrick@spacesurfer.com
ICQ: 59277981                                        tel: +44 7050699851
                                                     fax: +44 7050699852
SpaceSurfer Limited                          http://www.spacesurfer.com/
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