Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753719AbYGUQXT (ORCPT ); Mon, 21 Jul 2008 12:23:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751967AbYGUQXB (ORCPT ); Mon, 21 Jul 2008 12:23:01 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:46216 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751899AbYGUQXA (ORCPT ); Mon, 21 Jul 2008 12:23:00 -0400 Message-ID: <4884B7C3.9040801@linux-foundation.org> Date: Mon, 21 Jul 2008 11:22:27 -0500 From: Christoph Lameter User-Agent: Thunderbird 2.0.0.14 (Windows/20080421) MIME-Version: 1.0 To: Evgeniy Polyakov CC: Pekka Enberg , Ingo Molnar , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Vegard Nossum , "Rafael J. Wysocki" , davem@davemloft.net Subject: Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison overwritten References: <20080717214222.GA29449@elte.hu> <20080718091146.GQ6875@elte.hu> <20080721094110.GA16029@elte.hu> <84144f020807210252k68d5cf65i8c7ae3c11cecc046@mail.gmail.com> <20080721100627.GA5953@2ka.mipt.ru> In-Reply-To: <20080721100627.GA5953@2ka.mipt.ru> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 654 Lines: 18 Evgeniy Polyakov wrote: > Not that obvious... > skb->next is cleared in lots of places, in xmit network helper > for example, but since rest of the packet was not modified, it > means given skb was not freed, so it will not help. > > The skb was definitely freed. 6b is written over an object when it is freed. Something else retained a pointer to the skb and was confident that the skb still exists. -- 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/