linux-kernel - Re: BUG: sleeping function called from invalid context at kernel/mutex.c:271

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 18 Apr 2012 09:48:21 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	"Alexander E. Patrakov" <patrakov@...il.com>
Cc:	paulmck@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org
Subject: Re: BUG: sleeping function called from invalid context at
 kernel/mutex.c:271

On Wed, 2012-04-18 at 19:45 +0600, Alexander E. Patrakov wrote:

> > Do you see the RT throttling message too? That's a bug with an RT task
> > going haywire. If that is happening, an RT task may be preventing an RCU
> > grace period to finish, and causing the RCU stalls.
> 
> I am currently at home, writing this from a laptop with 3.3.1, and there

Have you seen the memory leaks on your laptop?

> are no such messages in dmesg (yet?). Also I don't know any RT tasks
> that may run on my computer, except pulseaudio, which has a built-in

There are kernel threads that run at RT priorities too.

> safeguard against this. As for the work computer, should I check
> tomorrow, and with which kernel version?
> 

I'm only interested in the kernel version that happens to leak. If other
versions don't leak then we don't need to worry about them ;-)

Perhaps the problem has already been fixed in later kernels.

-- Steve

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/