On 05/05/2010 12:36 AM, James Laska wrote:
Greetings,
While running through tests in the installation matrix
(
http://fedoraproject.org/wiki/Test_Results:Current_Installation_Test),
I keep seeing different versions of the "INFO: possible recursive
locking detected" message. For example, I see the below during
successful completion of a KVM guest install (see below).
Is anyone else seeing these? Anyone have tips/suggestions on where to
gather more information to further diagnose these messages?
I think this all started with this happy new year commit..
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit...
When I shutdown I get "K99cpuspeed is trying to acquire lock" one (
which I actually think might be cpu(freq) specific since I've only seen
it my lenovo laptop )
( Both have been reported upstream I think and our bugzilla ).
If this was some kind of targeted effort finding these deadlocks, the
kernel guys they would have asked us to throw up a special wiki page and
a tracker bug to keep tap of this stuff sometime in January..
Other than that I think these are slowly being handle on a case by case
bases.
Good think for reporters to keep in the back of their head if they are
having trouble seeing the print k message.
echo N > /proc/sys/kernel/printk_delay ( N is 0-10000 in milliseconds ).
Kernel guys can chime what their end game is and what they want to do
with these..
JBG