kernel 5.5 kernel and tg3 driver

[Mulyadi Santosa]

Hi...

On Mon, Oct 10, 2011 at 13:34, sri <bskmohan at gmail.com> wrote:
>
> ######################## START OF LOGS ############################
> Oct  1 14:16:56 server03 kernel: low stack detected by irq handler
> Oct  1 14:16:56 server03 kernel:  [<c0405e9b>] do_IRQ+0x86/0xc3
> Oct  1 14:16:56 server03 kernel:  [<c04046e6>] common_interrupt+0x1a/0x20
> Oct  1 14:16:56 server03 kernel:  [<c05a5c06>] neigh_lookup+0x23/0x7f
> Oct  1 14:16:56 server03 kernel:  [<c05d6800>] arp_bind_neighbour+0x50/0x71
> Oct  1 14:16:56 server03 kernel:  [<c05b7b44>] rt_intern_hash+0x372/0x480
> Oct  1 14:16:56 server03 kernel:  [<c05b8352>] __ip_route_output_key+0x700/

Looks like something is exhausting kernel stack way too fast. IIRC in
4K kernel stack scenario, 4K is assigned for normal usage and another
4K for irq.

So, IMHO, either something is leaking, or code paths are mixing too
much and too fast so they all together exhaust the irq stack.

For debugging, I am not sure...maybe ftrace stack usage could help
you. Grep your kernel .config and find out everything that contains
"stack". Or go to "kernel hacking" section and dig into ftrace
section.

Good luck....

-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com