rcu_sched_state detected stall, no stack trace

rcu_sched_state detected stall, no stack trace

[Prashant Batra (prbatra)]

Hi,

I am running vanilla kernel 3.0.23 . I am trying to add some 6K and more
IPv6 IPSec tunnels.
I am getting these warnings in dmesg close to 6k tunnels, after which
the kernel hangs and have to reboot the kernel.

[ 1511.045261] INFO: rcu_sched_state detected stall on CPU 4 (t=300000
jiffies)
[ 1534.736899] INFO: rcu_bh_state detected stalls on CPUs/tasks: { 4}
(detected by 13, t=300002 jiffies)

I am not getting any back-trace also, to figure out what is actually
causing the stall to happen.

Could someone help to figure out the issue.

Regards,
Prashant
--
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs

Re: rcu_sched_state detected stall, no stack trace

[Anatoly Sivov]

Prashant Batra (prbatra) <prbatra@cisco.com> писал(а) в своём письме Mon,  
09 Apr 2012 16:28:36 +0400:

> Hi,
>
> I am running vanilla kernel 3.0.23 . I am trying to add some 6K and more
> IPv6 IPSec tunnels.
> I am getting these warnings in dmesg close to 6k tunnels, after which
> the kernel hangs and have to reboot the kernel.
>
> [ 1511.045261] INFO: rcu_sched_state detected stall on CPU 4 (t=300000
> jiffies)
> [ 1534.736899] INFO: rcu_bh_state detected stalls on CPUs/tasks: { 4}
> (detected by 13, t=300002 jiffies)
>
> I am not getting any back-trace also, to figure out what is actually
> causing the stall to happen.
>
> Could someone help to figure out the issue.
>

Hi,

I guess the better way to get help on this issue is to repost your message  
to netdev list.

BR, Anatoly
--
To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.linux-learn.org/faqs