Thanks for the Inputs.<br>As there is not kernel crash, crash files are not create here to debug more.<br>Is there any way to force the kernel to create kernel crash files under /var/crash.<br>This helps more If am not wrong.<br>
<br>Regards,<br>Sri<br><br><div class="gmail_quote">On Mon, Oct 10, 2011 at 9:20 PM, Mulyadi Santosa <span dir="ltr"><<a href="mailto:mulyadi.santosa@gmail.com">mulyadi.santosa@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Hi...<br>
<div class="im"><br>
On Mon, Oct 10, 2011 at 13:34, sri <<a href="mailto:bskmohan@gmail.com">bskmohan@gmail.com</a>> wrote:<br>
><br>
> ######################## START OF LOGS ############################<br>
> Oct 1 14:16:56 server03 kernel: low stack detected by irq handler<br>
> Oct 1 14:16:56 server03 kernel: [<c0405e9b>] do_IRQ+0x86/0xc3<br>
> Oct 1 14:16:56 server03 kernel: [<c04046e6>] common_interrupt+0x1a/0x20<br>
> Oct 1 14:16:56 server03 kernel: [<c05a5c06>] neigh_lookup+0x23/0x7f<br>
> Oct 1 14:16:56 server03 kernel: [<c05d6800>] arp_bind_neighbour+0x50/0x71<br>
> Oct 1 14:16:56 server03 kernel: [<c05b7b44>] rt_intern_hash+0x372/0x480<br>
> Oct 1 14:16:56 server03 kernel: [<c05b8352>] __ip_route_output_key+0x700/<br>
<br>
</div>Looks like something is exhausting kernel stack way too fast. IIRC in<br>
4K kernel stack scenario, 4K is assigned for normal usage and another<br>
4K for irq.<br>
<br>
So, IMHO, either something is leaking, or code paths are mixing too<br>
much and too fast so they all together exhaust the irq stack.<br>
<br>
For debugging, I am not sure...maybe ftrace stack usage could help<br>
you. Grep your kernel .config and find out everything that contains<br>
"stack". Or go to "kernel hacking" section and dig into ftrace<br>
section.<br>
<br>
Good luck....<br>
<font color="#888888"><br>
--<br>
regards,<br>
<br>
Mulyadi Santosa<br>
Freelance Linux trainer and consultant<br>
<br>
blog: <a href="http://the-hydra.blogspot.com" target="_blank">the-hydra.blogspot.com</a><br>
training: <a href="http://mulyaditraining.blogspot.com" target="_blank">mulyaditraining.blogspot.com</a><br>
</font></blockquote></div><br><br clear="all"><br>-- <br>--<br> Krishna Mohan B<br>