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[23.128.96.18]) by mx.google.com with ESMTP id c1si10015205ejx.607.2020.11.30.05.12.45; Mon, 30 Nov 2020 05:13:10 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725933AbgK3NIz (ORCPT + 99 others); Mon, 30 Nov 2020 08:08:55 -0500 Received: from mail-io1-f71.google.com ([209.85.166.71]:44351 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725897AbgK3NIy (ORCPT ); Mon, 30 Nov 2020 08:08:54 -0500 Received: by mail-io1-f71.google.com with SMTP id a1so471585ioa.11 for ; Mon, 30 Nov 2020 05:08:39 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=rRssb1RG/kVfj9BXppmJh4PLBuJGRMgyZUW2mrbT0Iw=; b=sgGROMFawlSpD723qAtlEvwDm51UT3KKO0f7xM/g8I/jeRsSDUFpgz2hWcggrLBDy8 8p+5rchoT0NKFafHc0u89yEFsRC+UMFf5PIOYy/toGJllKxWI+g+gE8Xjj9WwSB+MI1f yBZ4vQ3Au9GtU1oAPmDcOAadvCriQ0vFwRWV9JAn/2gXynR5y2yM9rRtO/guvERvVS83 Faq0/ajMIqSkE9MkJNomOu91W3fR1OhGco+TRBLWXY5jl/sRLsmjYhfrrL5DhshBMbBe jEUXRYFE2zJcEZy+dfAOVARmC0mMBrBHIOFKO1ngN5N7XjaGWRuhJE6ajoxZ3G+vAVNm eTwQ== X-Gm-Message-State: AOAM532pv05rniBUdhN4N/rm2rOiSVTm3OTNvvC6mKWDrqUJBcKCpyuX 4dz4bQmnOioHj2DzKVeW0t9rMFCMT5xcvsjgRfFEl52hI1bR MIME-Version: 1.0 X-Received: by 2002:a02:cd87:: with SMTP id l7mr2834400jap.117.1606741692313; Mon, 30 Nov 2020 05:08:12 -0800 (PST) Date: Mon, 30 Nov 2020 05:08:12 -0800 In-Reply-To: <000000000000b8a70905b54ef5ca@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d0f2fb05b552b3f3@google.com> Subject: Re: KASAN: use-after-free Write in kernfs_path_from_node_locked From: syzbot To: akpm@linux-foundation.org, axelrasmussen@google.com, davem@davemloft.net, dsahern@kernel.org, gregkh@linuxfoundation.org, kuba@kernel.org, linux-kernel@vger.kernel.org, liuhangbin@gmail.com, netdev@vger.kernel.org, sfr@canb.auug.org.au, syzkaller-bugs@googlegroups.com, tj@kernel.org, vbabka@suse.cz Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit 0f818c4bc1f3dc0d6d0ea916e0ab30cf5e75f4c0 Author: Axel Rasmussen Date: Tue Nov 24 05:37:42 2020 +0000 mm: mmap_lock: add tracepoints around lock acquisition bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1626291d500000 start commit: 6174f052 Add linux-next specific files for 20201127 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=1526291d500000 console output: https://syzkaller.appspot.com/x/log.txt?x=1126291d500000 kernel config: https://syzkaller.appspot.com/x/.config?x=79c69cf2521bef9c dashboard link: https://syzkaller.appspot.com/bug?extid=19e6dd9943972fa1c58a syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12c3351d500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14c28809500000 Reported-by: syzbot+19e6dd9943972fa1c58a@syzkaller.appspotmail.com Fixes: 0f818c4bc1f3 ("mm: mmap_lock: add tracepoints around lock acquisition") For information about bisection process see: https://goo.gl/tpsmEJ#bisection