From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with SMTP id C8B866B008A for ; Wed, 8 Dec 2010 21:52:48 -0500 (EST) Date: Wed, 8 Dec 2010 21:52:44 -0500 (EST) From: caiqian@redhat.com Message-ID: <328504308.562701291863164154.JavaMail.root@zmail06.collab.prod.int.phx2.redhat.com> In-Reply-To: <1390696678.561621291861499485.JavaMail.root@zmail06.collab.prod.int.phx2.redhat.com> Subject: Re: continuous oom caused system deadlock MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: David Rientjes Cc: linux-mm , KAMEZAWA Hiroyuki , KOSAKI Motohiro , Andrew Morton List-ID: > > Bisect indicated that this is the first bad commit, > > > > commit 696d3cd5fb318c070dc757fe109e04e398138172 > > Author: David Rientjes > > Date: Fri Jun 11 22:45:17 2010 +0200 > > > > __out_of_memory() only has a single caller, so fold it into > > out_of_memory() and add a comment about locking for its call to > > oom_kill_process(). > > > > Signed-off-by: David Rientjes > > Cc: KAMEZAWA Hiroyuki > > Cc: KOSAKI Motohiro > > Signed-off-by: Andrew Morton > > > > This commit dropped the releasing of tasklist_lock when the oom killer > chooses not to act because it finds another task that has already been > killed but has yet to exit. That's fixed by b52723c5, so this bisect > isn't the source of your problem. > > You didn't report the specific mmotm kernel that this was happening > on, so trying to diagnose or reproduce it is diffcult. Could you try > 2.6.37-rc5 with your test case? If it works fine, could you try > mmotm-2010-12-02-16-34? The version is 2010-11-23-16-12 which included b52723c5 you mentioned. 2.6.37-rc5 had the same problem. CAI Qian -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org