BUG: scheduling while atomic (2.6.24 ubuntu kernel)

[Bosko Radivojevic]

Hi all,

a few moments ago I got a complete system lockup. From the logs it
looks like CIFS problem:
Jun 17 05:38:44 forum-db kernel: [    0.000000]  CIFS VFS: No response
for cmd 162 mid 44085
Jun 17 05:39:44 forum-db kernel: [    0.000000]  CIFS VFS: server not responding
Jun 17 05:39:44 forum-db kernel: [    0.000000]  CIFS VFS: No response
for cmd 162 mid 44091
Jun 17 05:40:44 forum-db kernel: [    0.000000]  CIFS VFS: server not responding
Jun 17 05:40:44 forum-db kernel: [    0.000000]  CIFS VFS: No response
for cmd 162 mid 44097
Jun 17 05:40:47 forum-db kernel: [    0.000000] BUG: scheduling while
atomic: cp/20245/0xffffffff

It is ubuntu system with their latest kernel (2.6.24-23-generic #1 SMP
Wed Apr 1 21:43:24 UTC 2009 x86_64 GNU/Linux). I've checked in the
source for this specific kernel and
http://git.kernel.org/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=a403a0a370946e7dbcda6464a3509089daee54bc
seems applied.

What could be a problem?

Sincerely,
Bosko

PS. I'm not subscribed to the linux-cifs-* lists, please cc me if answering
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[Jeff Layton-2]

On Wed, 17 Jun 2009 06:32:14 +0200
Bosko Radivojevic <bosko.radivojevic@...> wrote:

> Hi all,
>
> a few moments ago I got a complete system lockup. From the logs it
> looks like CIFS problem:
> Jun 17 05:38:44 forum-db kernel: [    0.000000]  CIFS VFS: No response
> for cmd 162 mid 44085
> Jun 17 05:39:44 forum-db kernel: [    0.000000]  CIFS VFS: server not responding
> Jun 17 05:39:44 forum-db kernel: [    0.000000]  CIFS VFS: No response
> for cmd 162 mid 44091
> Jun 17 05:40:44 forum-db kernel: [    0.000000]  CIFS VFS: server not responding
> Jun 17 05:40:44 forum-db kernel: [    0.000000]  CIFS VFS: No response
> for cmd 162 mid 44097
> Jun 17 05:40:47 forum-db kernel: [    0.000000] BUG: scheduling while
> atomic: cp/20245/0xffffffff
>
> It is ubuntu system with their latest kernel (2.6.24-23-generic #1 SMP
> Wed Apr 1 21:43:24 UTC 2009 x86_64 GNU/Linux). I've checked in the
> source for this specific kernel and
> http://git.kernel.org/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=a403a0a370946e7dbcda6464a3509089daee54bc
> seems applied.
>
> What could be a problem?
>
> Sincerely,
> Bosko
>
> PS. I'm not subscribed to the linux-cifs-* lists, please cc me if answering

Hmm...don't think I've ever seen CIFS cause such a problem. My
suspicion would be that something occurred elsewhere (maybe lower in
the networking stack). In order to diagnose it, you'll probably need to
look at the stack trace that was generated during the crash.

--
Jeff Layton <jlayton@...>
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