Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S939931AbXHIMsq (ORCPT ); Thu, 9 Aug 2007 08:48:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S939725AbXHIMpJ (ORCPT ); Thu, 9 Aug 2007 08:45:09 -0400 Received: from viefep18-int.chello.at ([213.46.255.22]:8020 "EHLO viefep14-int.chello.at" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S939679AbXHIMpG (ORCPT ); Thu, 9 Aug 2007 08:45:06 -0400 Subject: Re: 2.6.23-rc2-mm1: hang, prop_norm_single involved From: Peter Zijlstra To: Alexey Dobriyan Cc: akpm@osdl.org, linux-kernel@vger.kernel.org In-Reply-To: <20070809111044.GA6575@localhost.sw.ru> References: <20070809111044.GA6575@localhost.sw.ru> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-ikPTjTfXxFRhbVOdpbbv" Date: Thu, 09 Aug 2007 14:45:02 +0200 Message-Id: <1186663502.20108.28.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.10.1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1797 Lines: 56 --=-ikPTjTfXxFRhbVOdpbbv Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Thu, 2007-08-09 at 15:10 +0400, Alexey Dobriyan wrote: > LTP run reproducably hangs during rwtest01 test > rwtest -N rwtest01 -c -q -i 60s -f sync 10%25000:rs-sync=3D$$ > Calltrace is always the same: >=20 > INFO: trying to register non-static key > __lock_acquire+0x210/0xc9e > lock_acquire+0x87/0xa3 > _spin_lock_irqsave+0x2f/0x5f > prop_norm_single+0x32/0x74 > set_page_dirty+0xd6/0x151 > set_page_dirty_balance+0xc/0x71 > do_wp_page+0x4ae/0x52b > handle_mm_fault+0x616/0x6c4 > do_page_fault+0x1b0/0x51c [root@opteron ~]# PATH=3D/testcases/bin/:$PATH /testcases/bin/rwtest -N rwt= est01 -c -q -i 60s -f sync 10%25000:rs-sync=3D$$ rwtest01 1 PASS : Test passed [root@opteron ~]# PATH=3D/testcases/bin/:$PATH /testcases/bin/rwtest -N rwt= est01 -c -q -i 60s -f sync 10%25000:rs-sync=3D$$ =20 I can reproduce, but not always. Also, since the task->dirties member is initialized in fork.c this should either _always_ happen or never. So this does point to some memory corruption, ->dirties is the very last member of the task struct. /me goes try with slab_debug,... --=-ikPTjTfXxFRhbVOdpbbv Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQBGuwxOXA2jU0ANEf4RAoMiAJ41S+bSM2fVwuqfNt/PgUX/WGXM6QCcDz5E CprC6Yhpe8mgEjBicxTPC+U= =dxfP -----END PGP SIGNATURE----- --=-ikPTjTfXxFRhbVOdpbbv-- - 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/