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 X-Spam-Level: X-Spam-Status: No, score=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9750BC4708F for ; Mon, 31 May 2021 07:19:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 71FB361186 for ; Mon, 31 May 2021 07:19:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230291AbhEaHVF (ORCPT ); Mon, 31 May 2021 03:21:05 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:35609 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230253AbhEaHU4 (ORCPT ); Mon, 31 May 2021 03:20:56 -0400 Received: by mail-il1-f197.google.com with SMTP id n7-20020a056e021487b02901d29983f028so7562199ilk.2 for ; Mon, 31 May 2021 00:19:17 -0700 (PDT) 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:message-id:subject:from:to; bh=ArOpMdbFDDmKZECmacnd2/wE83IcJjiqARCZQPnaa3A=; b=PHDFaj7pmEewJiK1F19zhHmGOtkBK4buA5YIxHYOVuKT98aBF/kz1VTH3D/qUZDvnl QhFLSfQcZ97x153QHK+pI9AsA+xybHW5W5FtdWfE34qtLW8jkxyBHPWQl8ak9MVRfeuw 5oSTb0dIRMLXa9pAKmkDt7RmqrAXC50oZv2iMnKtqwK0Svo/AzYriWnZS7XJ5YLVYxgH pxTSeOHX/Ebpy8a/vthJgJcMlhx2D3Ai6Fdp9cP1h1mMZGUAKUQRB7eLGGVx3jNTIGEP fodlokd2hoTrBlLiYKBciyF/U23U1QZLBjvq8osBvma5p9JEK49Ji4oLbgt7xR3FRvhp eANw== X-Gm-Message-State: AOAM531m6nE69JUfJfXqSnMYRsffQmfGIvQa4VmovkHXZFIRwm/UFAh2 isesi7uVv5i04tWEZN5fx7nv9EX15k+1Ul+GSrx2Aj/kA8Sb X-Google-Smtp-Source: ABdhPJzEztdJ0o/G3hEuPu3fGtsj6Vswr0Ea06NfZCEV1dhAjKIhKjuRFPOkORDHPIMrp2/d/6pxBrq3IQ63xtm26c+MvOs0S4fg MIME-Version: 1.0 X-Received: by 2002:a05:6602:29cf:: with SMTP id z15mr16147286ioq.176.1622445557367; Mon, 31 May 2021 00:19:17 -0700 (PDT) Date: Mon, 31 May 2021 00:19:17 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001d4a3005c39b0b40@google.com> Subject: [syzbot] general protection fault in l2cap_chan_timeout (2) From: syzbot To: davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: ad9f25d3 Merge tag 'netfs-lib-fixes-20200525' of git://git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=173d383dd00000 kernel config: https://syzkaller.appspot.com/x/.config?x=266cda122a0b56c dashboard link: https://syzkaller.appspot.com/bug?extid=008cdbf7a9044c2c2f99 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+008cdbf7a9044c2c2f99@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc000000005a: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000002d0-0x00000000000002d7] CPU: 0 PID: 8 Comm: kworker/0:2 Not tainted 5.13.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events l2cap_chan_timeout RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:941 [inline] RIP: 0010:__mutex_lock+0xf6/0x10c0 kernel/locking/mutex.c:1104 Code: d0 7c 08 84 d2 0f 85 cc 0c 00 00 8b 15 e3 55 5f 07 85 d2 75 29 48 8d 7d 60 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 db 0e 00 00 48 3b 6d 60 0f 85 5a 0a 00 00 bf 01 RSP: 0018:ffffc90000cd7b78 EFLAGS: 00010216 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 000000000000005a RSI: 0000000000000000 RDI: 00000000000002d0 RBP: 0000000000000270 R08: ffffffff880a40d9 R09: 0000000000000000 R10: ffffffff814b4be0 R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888072e47020 R15: ffff8880b9c34a40 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcac15f1d58 CR3: 00000000628fa000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: l2cap_chan_timeout+0x69/0x2f0 net/bluetooth/l2cap_core.c:422 process_one_work+0x98d/0x1600 kernel/workqueue.c:2276 worker_thread+0x64c/0x1120 kernel/workqueue.c:2422 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Modules linked in: ---[ end trace d3dc393d48928266 ]--- RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:941 [inline] RIP: 0010:__mutex_lock+0xf6/0x10c0 kernel/locking/mutex.c:1104 Code: d0 7c 08 84 d2 0f 85 cc 0c 00 00 8b 15 e3 55 5f 07 85 d2 75 29 48 8d 7d 60 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 db 0e 00 00 48 3b 6d 60 0f 85 5a 0a 00 00 bf 01 RSP: 0018:ffffc90000cd7b78 EFLAGS: 00010216 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 000000000000005a RSI: 0000000000000000 RDI: 00000000000002d0 RBP: 0000000000000270 R08: ffffffff880a40d9 R09: 0000000000000000 R10: ffffffff814b4be0 R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888072e47020 R15: ffff8880b9c34a40 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33621000 CR3: 00000000628fa000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.