From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-vc0-f175.google.com (mail-vc0-f175.google.com [209.85.220.175]) by kanga.kvack.org (Postfix) with ESMTP id 03C446B0044 for ; Wed, 30 Apr 2014 16:26:12 -0400 (EDT) Received: by mail-vc0-f175.google.com with SMTP id lh4so2881014vcb.20 for ; Wed, 30 Apr 2014 13:26:12 -0700 (PDT) Received: from mail-vc0-x22c.google.com (mail-vc0-x22c.google.com [2607:f8b0:400c:c03::22c]) by mx.google.com with ESMTPS id sw4si5572740vdc.138.2014.04.30.13.26.12 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 30 Apr 2014 13:26:12 -0700 (PDT) Received: by mail-vc0-f172.google.com with SMTP id id10so2929930vcb.31 for ; Wed, 30 Apr 2014 13:26:12 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <53614BFE.9090804@linux.vnet.ibm.com> References: <535EA976.1080402@linux.vnet.ibm.com> <1398723290.25549.20.camel@buesod1.americas.hpqcorp.net> <535F77E8.2040000@linux.vnet.ibm.com> <53614BFE.9090804@linux.vnet.ibm.com> Date: Wed, 30 Apr 2014 13:26:12 -0700 Message-ID: Subject: Re: [BUG] kernel BUG at mm/vmacache.c:85! From: Linus Torvalds Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: "Srivatsa S. Bhat" Cc: Davidlohr Bueso , Hugh Dickins , Linux MM , "linux-kernel@vger.kernel.org" , Rik van Riel , Michel Lespinasse , "akpm@linux-foundation.org" , Oleg Nesterov , Dave Jones On Wed, Apr 30, 2014 at 12:16 PM, Srivatsa S. Bhat wrote: > > So I tried the same recipe again (boot into 3.7.7 and kexec into 3.15-rc3+) > and I got totally random crashes so far, once in sys_kill and two times in > exit_mmap. So I guess the bug is in 3.7.x and probably 3.15-rc is fine after > all... Yeah, ok, that sounds more likely. Random memory corruption due to kexec having done something horribly bad. Linus -- 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/ . Don't email: email@kvack.org