From: =?UTF-8?B?VG9yYWxmIEbDtnJzdGVy?= Subject: Re: fuzzying a user mode linux image often core dumps with Date: Sun, 21 Jul 2013 13:14:13 +0200 Message-ID: <51EBC285.2030104@gmx.de> References: <51EAA7A7.4000104@gmx.de> <20130721010352.GB21484@thunk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: linux-ext4@vger.kernel.org, "user-mode-linux-devel@lists.sourceforge.net" To: Theodore Ts'o Return-path: Received: from mout.gmx.net ([212.227.15.15]:55371 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754542Ab3GULOP (ORCPT ); Sun, 21 Jul 2013 07:14:15 -0400 Received: from [80.171.226.24] ([80.171.226.24]) by mail.gmx.com (mrgmx002) with ESMTPSA (Nemesis) id 0M1msU-1U77JE0ANG-00tkot for ; Sun, 21 Jul 2013 13:14:14 +0200 In-Reply-To: <20130721010352.GB21484@thunk.org> Sender: linux-ext4-owner@vger.kernel.org List-ID: On 07/21/2013 03:03 AM, Theodore Ts'o wrote: > On Sat, Jul 20, 2013 at 05:07:19PM +0200, Toralf F=C3=B6rster wrote: >> I do run the fuzzer trinity within a 32 bit user mode linux. >> With latest git tree I do often get a core dump like the one attache= d. >> >> Although it is the nature of trinity to corrupt the kernel /me wonde= rs why it happens nearly alway >> at the same place. That's why I decided to just report it here. >=20 > Thanks, this is a known problem for which the fix is can be found her= e: >=20 > http://patchwork.ozlabs.org/patch/260250/ >=20 Ah - so no bisecting necessary. > I hope to get this fixed before -rc2 is released; the only question a= t > the moment is whether the fix is going to go to Linus via the ext4 > tree or the VFS tree.... yep - Linus had it now in its tree-. BTW that issue seems to be the reason for a lot of erratically crashes of an UML while fuzzy tested. --=20 MfG/Sincerely Toralf F=C3=B6rster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html