From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with SMTP id BB4A96B00D0 for ; Tue, 9 Nov 2010 00:51:22 -0500 (EST) Received: by yxm34 with SMTP id 34so4404772yxm.14 for ; Mon, 08 Nov 2010 21:51:21 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20101109142733.BC69.A69D9226@jp.fujitsu.com> References: <20101109142733.BC69.A69D9226@jp.fujitsu.com> From: Luke Hutchison Date: Tue, 9 Nov 2010 00:50:40 -0500 Message-ID: Subject: Re: "BUG: soft lockup - CPU#0 stuck for 61s! [kswapd0:184]" Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org To: KOSAKI Motohiro Cc: linux-kernel@vger.kernel.org, linux-mm , Mel Gorman List-ID: On Tue, Nov 9, 2010 at 12:33 AM, KOSAKI Motohiro wrote: > AFAIK, This isssue was already fixed by Mel. > > http://kerneltrap.org/mailarchive/linux-kernel/2010/10/27/4637977 Yes, based on where the CPU lockups were occurring (zone_nr_free_pages, zone_watermark_ok), this fix does seem to address the problem I described. I assume the other lockup points (_raw_spin_unlock_irqrestore, find_next_bit, sleeping_prematurely, test_tsk_thread_flag) are also caused by the NR_FREE_PAGES problem? Thank you for the link, I'll put it into the Fedora bug report and hopefully a fix will be pushed out sometime soon. Luke -- 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