Re: PROBLEM: crashes of 2.4.31hf2.6 kernel (oops included)

[Willy Tarreau <w@1wt.eu>]

On Tue, Jul 04, 2006 at 06:24:25AM +0000, Chris Morrow wrote:
> 
> 
> On Tue, 4 Jul 2006 morrowc+kernel@ops-netman.net wrote:
> >
> >On Tue, 4 Jul 2006, Willy Tarreau wrote:
> >
> >>On Tue, Jul 04, 2006 at 02:22:00AM +0000, morrowc+kernel@ops-netman.net 
> >>wrote:
> >>Do all the oops report a crash in tcp_synack_timer() ? This one got a
> >>wrong pointer for the call to req->class->rtx_syn_ack(). This really
> 
> apologies, I didn't catch the EIP pointer in your message, looking at the 
> included 06/29 oops/ksymoops output I see:
> 
> grep -i EIP output-ksymoops-06-29-02
> 00000000 <_EIP>:
> 00000000 <_EIP>:
> 
> So, no relevant output on that one :( Looking all all after 06/15:
> 
> output-ksymoops-06-24:EIP:    0010:[<30246c8b>]    Not tainted
> output-ksymoops-06-24:>>EIP; 30246c8b Before first symbol   <=====
> output-ksymoops-06-25-01:EIP:    0010:[<c0122485>]    Not tainted
> output-ksymoops-06-25-01:>>EIP; c0122485 <add_timer+55/110>   <=====
> output-ksymoops-06-25-01:00000000 <_EIP>:
> output-ksymoops-06-27-2006:00000000 <_EIP>:
> output-ksymoops-06-27-2006:00000000 <_EIP>:
> output-ksymoops-06-29-01:EIP:    0010:[<c0122f20>]    Not tainted
> output-ksymoops-06-29-01:>>EIP; c0122f20 <count_active_tasks+20/50> <=====
> output-ksymoops-06-29-02:00000000 <_EIP>:
> output-ksymoops-06-29-02:00000000 <_EIP>:
> output-ksymoops-2006-07-03-01.txt:EIP:    0010:[<c024b03f>]    Not tainted
> output-ksymoops-2006-07-03-01.txt:>>EIP; c024b03f <tcp_synack_timer+ff/1f0> 
> <=====
> output-ksymoops-2006-07-03-01.txt:00000000 <_EIP>:
> output-ksymoops-2006-07-03-01.txt:   5:   0f 85 8b 00 00 00         jne   
> 96 <_EIP+0x96>
> 
> only the 07/03-01 points at synack-timer. This might mean it's more memory 
> related than anything else, eh?

Yes, it really looks like !
I'm fairly confident that you'll only have to replace a bad memory stick
or a power supply to fix the problem.

Cheers,
Willy