From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 05869C38A2D for ; Tue, 25 Oct 2022 05:24:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230285AbiJYFYg (ORCPT ); Tue, 25 Oct 2022 01:24:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44438 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230228AbiJYFYe (ORCPT ); Tue, 25 Oct 2022 01:24:34 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AF1991F607; Mon, 24 Oct 2022 22:24:33 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 61148B81A49; Tue, 25 Oct 2022 05:24:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BCC2CC433D7; Tue, 25 Oct 2022 05:24:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1666675471; bh=dF49dTW/qT+v3oJiK1K3/C1aumfpE7sXiBGXB2F/8l8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=hlUZ1IwcOMNkZ38elGsKCy6rF73OkwlQt8JQRkjYWFrq2pQn27I2nDUmOE/tEf3Kw zImfgEn8IoIZ/S4SxG3N/31ZcQvlxyWGW8GM5iaZdKN37bYK0fzD/W7IqNHjYrVatz c0fAxVtMvaNvHazGXLmG48scNHatmty/SVNYvq9FaZ/14FJIu7c8l6kXhwgEaYvr1A nJDHYi4cs59AuY1eHQTqfaznnKce23WOHZJp37aPHLWO1TdVDnG0T5jt5KI3rgW4to 9F+dz21hzxE9Rf4NeC0NgXiDTR4tmBh5EuGZdW+xDogMiscNzm9vrlfLaH+Q6MpFQj w81NEUrvj5Cxg== Date: Mon, 24 Oct 2022 22:24:29 -0700 From: Eric Biggers To: Lukas Czerner Cc: hirofumi@mail.parknet.co.jp, jack@suse.cz, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tytso@mit.edu, syzbot , linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: Re: [syzbot] KASAN: use-after-free Read in move_expired_inodes (2) Message-ID: References: <00000000000037b96205eabe49b5@google.com> <000000000000673b6305eac37e1f@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000000000000673b6305eac37e1f@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org On Tue, Oct 11, 2022 at 07:57:23AM -0700, syzbot wrote: > syzbot has bisected this issue to: > > commit cbfecb927f429a6fa613d74b998496bd71e4438a > Author: Lukas Czerner > Date: Thu Aug 25 10:06:57 2022 +0000 > > fs: record I_DIRTY_TIME even if inode already has I_DIRTY_INODE > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17e93452880000 > start commit: 493ffd6605b2 Merge tag 'ucount-rlimits-cleanups-for-v5.19'.. > git tree: upstream > final oops: https://syzkaller.appspot.com/x/report.txt?x=14193452880000 > console output: https://syzkaller.appspot.com/x/log.txt?x=10193452880000 > kernel config: https://syzkaller.appspot.com/x/.config?x=d19f5d16783f901 > dashboard link: https://syzkaller.appspot.com/bug?extid=6ba92bd00d5093f7e371 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1724028a880000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17419234880000 > > Reported-by: syzbot+6ba92bd00d5093f7e371@syzkaller.appspotmail.com > Fixes: cbfecb927f42 ("fs: record I_DIRTY_TIME even if inode already has I_DIRTY_INODE") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection Lukas, are you looking into this? - Eric