Subject: Re: [Bugme-new] [Bug 12201] New: long wait in call_usermodehelper() / queue_work() / wait_for_completion()

From: Evgeniy Polyakov <[email-masked]>
Date: Fri, 12 Dec 2008 01:51:58 +0300

Hi.

On Thu, Dec 11, 2008 at 02:37:58PM -0800, Andrew Morton ([email-masked]) wrote:
> > If I write a small pilot program that calls socket(PF_NETLINK, SOCK_RAW,
> > NETLINK_AUDIT), it will delay by 1-2 seconds 100% of the time (assuming server
> > has been online for a while).  Certain protocol types given to socket() have
> > zero delay (because no module needs to be loaded).
> > 
> > Steps to reproduce:
> > Once server has been online for a while, a simple call to socket(PF_NETLINK,
> > SOCK_RAW, NETLINK_AUDIT) shows the problem.
> 
> OK, weird.
> 
> Please get sysrq working then get us a task trace, so we can see who is
> sleeping where.  Do this:
> 
> 
> - run your "small pilot program"

Or send it to us and we will quickly fix the bug :)

Thank you!

-- 
	Evgeniy Polyakov