From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756587AbZCRLwq (ORCPT ); Wed, 18 Mar 2009 07:52:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755805AbZCRLwh (ORCPT ); Wed, 18 Mar 2009 07:52:37 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:51721 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755737AbZCRLwg (ORCPT ); Wed, 18 Mar 2009 07:52:36 -0400 Date: Wed, 18 Mar 2009 12:51:58 +0100 From: Ingo Molnar To: Ananth N Mavinakayanahalli Cc: Linus Torvalds , Andrew Morton , lkml , Masami Hiramatsu , Jim Keniston , bharata@linux.vnet.ibm.com Subject: Re: [PATCH] Kprobes: Fix locking imbalance in kretprobes Message-ID: <20090318115158.GF32233@elte.hu> References: <20090318113621.GB4129@in.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090318113621.GB4129@in.ibm.com> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Ananth N Mavinakayanahalli wrote: > Fix locking imbalance in kretprobes: > > ===================================== > [ BUG: bad unlock balance detected! ] > ------------------------------------- > kthreadd/2 is trying to release lock (&rp->lock) at: > [] 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. Ingo