BUG: scheduling while atomic (2.6.24 ubuntu kernel)

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