INFO: possible recursive locking detected - 18.104.22.168-57.fc13.i686 #1
"Jóhann B. Guðmundsson"
johannbg at hi.is
Wed May 5 04:55:51 UTC 2010
On 05/05/2010 12:36 AM, James Laska wrote:
> While running through tests in the installation matrix
> 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..
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
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
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