linux-kernel - Re: [PATCH] Kprobes: Fix locking imbalance in kretprobes

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Message-ID: <20090318122500.GC4129@in.ibm.com>
Date:	Wed, 18 Mar 2009 17:55:00 +0530
From:	Ananth N Mavinakayanahalli <ananth@...ibm.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	Jim Keniston <jkenisto@...ibm.com>, bharata@...ux.vnet.ibm.com
Subject: Re: [PATCH] Kprobes: Fix locking imbalance in kretprobes

On Wed, Mar 18, 2009 at 12:51:58PM +0100, Ingo Molnar wrote:
> 
> * Ananth N Mavinakayanahalli <ananth@...ibm.com> wrote:
> 
> > Fix locking imbalance in kretprobes:
> > 
> > =====================================
> > [ BUG: bad unlock balance detected! ]
> > -------------------------------------
> > kthreadd/2 is trying to release lock (&rp->lock) at:
> > [<c06b3080>] pre_handler_kretprobe+0xea/0xf4
> 
> Applied it to tip:tracing/kprobes, thanks Ananth!
> 
> The bug has been introduced in v2.6.27-rc1 so i've marked it for a 
> -stable backport for .27.x, 28.x and 29.x.

Sure, thanks Ingo!
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