From mboxrd@z Thu Jan 1 00:00:00 1970 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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sog-mx-2.v43.ch3.sourceforge.com ([172.29.43.192] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1V0rao-0003yV-2T for user-mode-linux-devel@lists.sourceforge.net; Sun, 21 Jul 2013 11:14:22 +0000 Received: from mout.gmx.net ([212.227.15.19]) by sog-mx-2.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1V0ram-0004xF-2Y for user-mode-linux-devel@lists.sourceforge.net; Sun, 21 Jul 2013 11:14:22 +0000 Received: from [80.171.226.24] ([80.171.226.24]) by mail.gmx.com (mrgmx002) with ESMTPSA (Nemesis) id 0MQ2zr-1V4SEH0Xpr-005FlK for ; Sun, 21 Jul 2013 13:14:14 +0200 Message-ID: <51EBC285.2030104@gmx.de> Date: Sun, 21 Jul 2013 13:14:13 +0200 From: =?UTF-8?B?VG9yYWxmIEbDtnJzdGVy?= MIME-Version: 1.0 References: <51EAA7A7.4000104@gmx.de> <20130721010352.GB21484@thunk.org> In-Reply-To: <20130721010352.GB21484@thunk.org> List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: user-mode-linux-devel-bounces@lists.sourceforge.net Subject: Re: [uml-devel] fuzzying a user mode linux image often core dumps with To: Theodore Ts'o Cc: linux-ext4@vger.kernel.org, "user-mode-linux-devel@lists.sourceforge.net" T24gMDcvMjEvMjAxMyAwMzowMyBBTSwgVGhlb2RvcmUgVHMnbyB3cm90ZToKPiBPbiBTYXQsIEp1 bCAyMCwgMjAxMyBhdCAwNTowNzoxOVBNICswMjAwLCBUb3JhbGYgRsO2cnN0ZXIgd3JvdGU6Cj4+ IEkgZG8gcnVuIHRoZSBmdXp6ZXIgdHJpbml0eSB3aXRoaW4gYSAzMiBiaXQgdXNlciBtb2RlIGxp bnV4Lgo+PiBXaXRoIGxhdGVzdCBnaXQgdHJlZSBJIGRvIG9mdGVuIGdldCBhIGNvcmUgZHVtcCBs aWtlIHRoZSBvbmUgYXR0YWNoZWQuCj4+Cj4+IEFsdGhvdWdoIGl0IGlzIHRoZSBuYXR1cmUgb2Yg dHJpbml0eSB0byBjb3JydXB0IHRoZSBrZXJuZWwgL21lIHdvbmRlcnMgd2h5IGl0IGhhcHBlbnMg bmVhcmx5IGFsd2F5Cj4+IGF0IHRoZSBzYW1lIHBsYWNlLiBUaGF0J3Mgd2h5IEkgZGVjaWRlZCB0 byBqdXN0IHJlcG9ydCBpdCBoZXJlLgo+IAo+IFRoYW5rcywgdGhpcyBpcyBhIGtub3duIHByb2Js ZW0gZm9yIHdoaWNoIHRoZSBmaXggaXMgY2FuIGJlIGZvdW5kIGhlcmU6Cj4gCj4gCWh0dHA6Ly9w YXRjaHdvcmsub3psYWJzLm9yZy9wYXRjaC8yNjAyNTAvCj4gCkFoIC0gc28gbm8gYmlzZWN0aW5n IG5lY2Vzc2FyeS4KCj4gSSBob3BlIHRvIGdldCB0aGlzIGZpeGVkIGJlZm9yZSAtcmMyIGlzIHJl bGVhc2VkOyB0aGUgb25seSBxdWVzdGlvbiBhdAo+IHRoZSBtb21lbnQgaXMgd2hldGhlciB0aGUg Zml4IGlzIGdvaW5nIHRvIGdvIHRvIExpbnVzIHZpYSB0aGUgZXh0NAo+IHRyZWUgb3IgdGhlIFZG UyB0cmVlLi4uLgoKeWVwIC0gTGludXMgaGFkIGl0IG5vdyBpbiBpdHMgdHJlZS0uCgpCVFcgdGhh dCBpc3N1ZSBzZWVtcyB0byBiZSB0aGUgcmVhc29uIGZvciBhIGxvdCBvZiBlcnJhdGljYWxseSBj cmFzaGVzCm9mIGFuIFVNTCB3aGlsZSBmdXp6eSB0ZXN0ZWQuCgotLSAKTWZHL1NpbmNlcmVseQpU b3JhbGYgRsO2cnN0ZXIKcGdwIGZpbmdlciBwcmludDogN0IxQSAwN0Y0IEVDODIgMEY5MCBENEMy IDg5MzYgODcyQSBFNTA4IDdEQjYgOURBMwoKLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tClNlZSBldmVy eXRoaW5nIGZyb20gdGhlIGJyb3dzZXIgdG8gdGhlIGRhdGFiYXNlIHdpdGggQXBwRHluYW1pY3MK R2V0IGVuZC10by1lbmQgdmlzaWJpbGl0eSB3aXRoIGFwcGxpY2F0aW9uIG1vbml0b3JpbmcgZnJv bSBBcHBEeW5hbWljcwpJc29sYXRlIGJvdHRsZW5lY2tzIGFuZCBkaWFnbm9zZSByb290IGNhdXNl IGluIHNlY29uZHMuClN0YXJ0IHlvdXIgZnJlZSB0cmlhbCBvZiBBcHBEeW5hbWljcyBQcm8gdG9k YXkhCmh0dHA6Ly9wdWJhZHMuZy5kb3VibGVjbGljay5uZXQvZ2FtcGFkL2Nsaz9pZD00ODgwODgz MSZpdT0vNDE0MC9vc3RnLmNsa3RyawpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fXwpVc2VyLW1vZGUtbGludXgtZGV2ZWwgbWFpbGluZyBsaXN0ClVzZXItbW9k ZS1saW51eC1kZXZlbEBsaXN0cy5zb3VyY2Vmb3JnZS5uZXQKaHR0cHM6Ly9saXN0cy5zb3VyY2Vm b3JnZS5uZXQvbGlzdHMvbGlzdGluZm8vdXNlci1tb2RlLWxpbnV4LWRldmVsCg==