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 lists.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EADB8C38A02 for ; Fri, 28 Oct 2022 03:34:29 +0000 (UTC) Received: from [127.0.0.1] (helo=sfs-ml-1.v29.lw.sourceforge.com) by sfs-ml-1.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1ooG8b-0000bX-28; Fri, 28 Oct 2022 03:34:29 +0000 Received: from [172.30.20.202] (helo=mx.sourceforge.net) by sfs-ml-1.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from <3vU1bYwkbAOYaghSITTMZIXXQL.OWWOTMcaMZKWVbMVb.KWU@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com>) id 1ooG8Z-0000bR-Jk for linux-f2fs-devel@lists.sourceforge.net; Fri, 28 Oct 2022 03:34:27 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Type:To:From:Subject:Message-ID:In-Reply-To :Date:MIME-Version:Sender:Reply-To:Cc:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=d9bEgoyCkEVc1rviJui83BJ63zZs6aH07Bg8EsC0G6Q=; b=VFZQ7ZAzvbNsQJgSwb6dmCyPOR 3aytF9/vTk0yAWGJaUQXgnv5W16jQY7QoiVSheyNiqA3EZL8AdxkqloM24H4rrc41mqiJN0nlnB9s LizYUWAjSC4G2ECAzkjOGspym3VwL6qghrtFd5gKKOv29znqLTdWpmNKkc5UjWCYDLyM=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Type:To:From:Subject:Message-ID:In-Reply-To:Date:MIME-Version: Sender:Reply-To:Cc:Content-Transfer-Encoding:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: References:List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post: List-Owner:List-Archive; bh=d9bEgoyCkEVc1rviJui83BJ63zZs6aH07Bg8EsC0G6Q=; b=R UOh1DWNXYK8D6O5QrG+zddUq6WSH6QYUb9qTYIPpjJ1sQ4sOWGTplcRmz1U9yaUjBIzoCavpck/Yr 9KzRllBDoCFGFPZYx6zS5YrEcwUlQhrWfiYFKv4epSmhPeVWKLrZRoTjDVLgitpe0r7l/NV15IXNw aDf7G1ziMiBHfup8=; Received: from mail-io1-f72.google.com ([209.85.166.72]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.95) id 1ooG8Y-00046w-Ub for linux-f2fs-devel@lists.sourceforge.net; Fri, 28 Oct 2022 03:34:27 +0000 Received: by mail-io1-f72.google.com with SMTP id a6-20020a056602208600b006bff2e56943so3288525ioa.11 for ; Thu, 27 Oct 2022 20:34:26 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=d9bEgoyCkEVc1rviJui83BJ63zZs6aH07Bg8EsC0G6Q=; b=hkE+T4OBy2S+n2UHlzGC1enBntIrYGANK7TyrSt7IVXfXkbH7AfFv/NjAxht2UbEMy fUSPpHM7ts/HthSqIyeotMDQG71gHktx+5k9UOAeQuRVK5FmrFAxaWWfMaeK7lxX1veA 0QZfDjvImQUuUS+00dR4ApvXEidL4EZgh6uuIwBQQ5boKhCulyUbiw83xMyFcvS6leDI Bh5AUFXi2/zWbuswaSmXOMKinpBsICrqUaxOf29okH5txaim6Y+OioOI+1RLGP3V3998 dQG15ZmcAU0Q+NOANd2+DBdfEOJpJ0VieoZU9Od65ny8POHi7TNOmqM1I4f/1YqIIGx9 uEcA== X-Gm-Message-State: ACrzQf3LV79JZhwfte733ODfbFTjTVG3/yFU+sx8Yi17x2FQexeII+zj zSdadOf2hl5JVF6NbFLPShVbIalCYoS8B4e0QYYm+icQp5IQ X-Google-Smtp-Source: AMsMyM5D1/vrXmJp1T7B1mMtXHgOipwY7DPBpP1Uj5RWHyfccshSXYdP3JkEur3gchsb3YuZ8eqSfmteGNHGkWetUR0eZ6NgKSgP MIME-Version: 1.0 X-Received: by 2002:a05:6638:d96:b0:363:9ed9:1112 with SMTP id l22-20020a0566380d9600b003639ed91112mr32264367jaj.171.1666928061421; Thu, 27 Oct 2022 20:34:21 -0700 (PDT) Date: Thu, 27 Oct 2022 20:34:21 -0700 In-Reply-To: <000000000000a7077705eae5f90c@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f79f5905ec0fee38@google.com> From: syzbot To: changfengnan@vivo.com, chao@kernel.org, frank.li@vivo.com, jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, wuhoipok@gmail.com X-Headers-End: 1ooG8Y-00046w-Ub Subject: Re: [f2fs-dev] [syzbot] BUG: unable to handle kernel NULL pointer dereference in f2fs_stop_discard_thread X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net syzbot has bisected this issue to: commit 4d67490498acb4ffcef5ba7bc44990d46e66a44c Author: Fengnan Chang Date: Thu Aug 19 08:02:37 2021 +0000 f2fs: Don't create discard thread when device doesn't support realtime discard bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17da7522880000 start commit: 247f34f7b803 Linux 6.1-rc2 git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=143a7522880000 console output: https://syzkaller.appspot.com/x/log.txt?x=103a7522880000 kernel config: https://syzkaller.appspot.com/x/.config?x=a66c6c673fb555e8 dashboard link: https://syzkaller.appspot.com/bug?extid=035a381ea1afb63f098d syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11d92d6a880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12e5dbba880000 Reported-by: syzbot+035a381ea1afb63f098d@syzkaller.appspotmail.com Fixes: 4d67490498ac ("f2fs: Don't create discard thread when device doesn't support realtime discard") For information about bisection process see: https://goo.gl/tpsmEJ#bisection _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel