Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934776AbXHLM2F (ORCPT ); Sun, 12 Aug 2007 08:28:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758140AbXHLM1y (ORCPT ); Sun, 12 Aug 2007 08:27:54 -0400 Received: from smtp.ustc.edu.cn ([202.38.64.16]:53459 "HELO ustc.edu.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with SMTP id S1758126AbXHLM1x (ORCPT ); Sun, 12 Aug 2007 08:27:53 -0400 Message-ID: <386921666.18788@ustc.edu.cn> X-EYOUMAIL-SMTPAUTH: wfg@mail.ustc.edu.cn Date: Sun, 12 Aug 2007 20:27:46 +0800 From: WU Fengguang To: Balbir Singh Cc: Andrew Morton , linux-kernel Subject: Re: [BUGFIX] NULL pointer dereference in __vm_enough_memory() Message-ID: <20070812122746.GA10109@mail.ustc.edu.cn> Mail-Followup-To: Balbir Singh , Andrew Morton , linux-kernel References: <46BEF5C0.3080902@linux.vnet.ibm.com> <20070812120902.GA9972@mail.ustc.edu.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070812120902.GA9972@mail.ustc.edu.cn> X-GPG-Fingerprint: 53D2 DDCE AB5C 8DC6 188B 1CB1 F766 DA34 8D8B 1C6D User-Agent: Mutt/1.5.16 (2007-06-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1087 Lines: 31 Hi Balbir, [add CC to LKML] On Sun, Aug 12, 2007 at 05:27:52PM +0530, Balbir Singh wrote: > For some reason my mailer keeps removing you from the cc. Or maybe it's my SMTP server's problem. Email systems are complex. > >>> Thats a valid point. It would be interesting to see what the overcommit > >>> setting was, when the panic occurred. > >> FYI, I do have nondefault overcommit settings: > >> > >> vm.overcommit_memory = 2 > >> vm.lowmem_reserve_ratio = 1 1 > > > > Yes, the bug disappears when changing to default overcommit_memory! > > > > Great! So the problem might have existed for some time, but we never > saw it due to default over commit values? Were you using these values > for over commit even before? No I changed it several weeks ago to stop my desktop from freezing. So yes, the bug may have been there for a while. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/