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=-9.0 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=ham 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 ECBD3C433E3 for ; Wed, 5 Aug 2020 20:15:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D6B8822B42 for ; Wed, 5 Aug 2020 20:15:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729586AbgHEUOp (ORCPT ); Wed, 5 Aug 2020 16:14:45 -0400 Received: from mail-il1-f200.google.com ([209.85.166.200]:48158 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726764AbgHEQX0 (ORCPT ); Wed, 5 Aug 2020 12:23:26 -0400 Received: by mail-il1-f200.google.com with SMTP id x4so1918959ilk.15 for ; Wed, 05 Aug 2020 09:22:35 -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=gf59HPMENV3tGrAXq5hE5QTaFPtfjI08GkK5Z/pVw18=; b=MjuqQJn+f9EWfaCts4O27lNzwI97ivjbFtq2KMF1LmRu9woaI0yUXhiMrvLTYCRBug wPXX4MhYqY2Q5boegvamFBkF/HdCkSFIfp8AVV8S0a5NnRLSuO5cDLdKkcgZP8I5yU5M qSofgeGnZJma8VgEBw40atPkg7vlwPZq31nhpXhoywCOWldw6RGoKOkun4BmCv1oLyGl K7vWF40fLTgEFeNe0uICSL8JgTBqxdm4FAeOX5yTm6Wyb4w/bX30O6nW4kMvcC37V4ho MVWEYHPp00NTxo3kNF0ZCiiVaQ/xzfNGKKU2DBZTxOXHrRBI5vnn64rKZlPk14Cprriz wsjA== X-Gm-Message-State: AOAM531HIPphqtAzuI2KrjM34wLDAh3h1JeMgIjr+DON6HALqvI5OoQp 5RuMGxEnBSAwh/WbrXUPHQ/+aqQ3tqPiNnKON8EH8CZQwg4V X-Google-Smtp-Source: ABdhPJxl0BPdl6oM/s7HLtGwzvDPhEYlmelG5KgJF5rbDcL7n1B3Q6UoxJACGDSfOLK8hC/Y8LQyi/I8pkm2k0uNJ6e3zo992gYj MIME-Version: 1.0 X-Received: by 2002:a5d:9a86:: with SMTP id c6mr4183230iom.27.1596643761561; Wed, 05 Aug 2020 09:09:21 -0700 (PDT) Date: Wed, 05 Aug 2020 09:09:21 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000003da5f105ac239832@google.com> Subject: general protection fault in bt_accept_unlink From: syzbot To: davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, marcel@holtmann.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: ac3a0c84 Merge git://git.kernel.org/pub/scm/linux/kernel/g.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=1639b284900000 kernel config: https://syzkaller.appspot.com/x/.config?x=c0cfcf935bcc94d2 dashboard link: https://syzkaller.appspot.com/bug?extid=a9c8613ce9eafbd86441 compiler: gcc (GCC) 10.1.0-syz 20200507 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+a9c8613ce9eafbd86441@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xf777682000003777: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0xbbbb61000001bbb8-0xbbbb61000001bbbf] CPU: 0 PID: 9028 Comm: kworker/0:6 Not tainted 5.8.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events l2cap_chan_timeout RIP: 0010:__list_del_entry_valid+0x81/0xef lib/list_debug.c:51 Code: 0f 84 df 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c4 0f 84 e0 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 51 49 8b 14 24 48 39 ea 0f 85 97 00 00 00 49 8d 7d RSP: 0018:ffffc900091afb18 EFLAGS: 00010a06 RAX: dffffc0000000000 RBX: ffff8880a71664b8 RCX: ffffffff8724984f RDX: 17776c2000003777 RSI: ffffffff8717d437 RDI: ffff8880a71664c0 RBP: ffff8880a71664b8 R08: 0000000000000001 R09: ffff8880a7166067 R10: 0000000000000009 R11: 00000000000ccae8 R12: bbbb61000001bbbb R13: bb60000000bbbbbb R14: 00000060000000bb R15: 0000000000000005 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000ca8660 CR3: 000000009115f000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:132 [inline] list_del_init include/linux/list.h:204 [inline] bt_accept_unlink+0x26/0x280 net/bluetooth/af_bluetooth.c:187 l2cap_sock_teardown_cb+0x197/0x400 net/bluetooth/l2cap_sock.c:1544 l2cap_chan_del+0xad/0x1300 net/bluetooth/l2cap_core.c:618 l2cap_chan_close+0x118/0xb10 net/bluetooth/l2cap_core.c:824 l2cap_chan_timeout+0x173/0x450 net/bluetooth/l2cap_core.c:436 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:291 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293 Modules linked in: ---[ end trace 89227449b8393688 ]--- RIP: 0010:__list_del_entry_valid+0x81/0xef lib/list_debug.c:51 Code: 0f 84 df 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c4 0f 84 e0 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 51 49 8b 14 24 48 39 ea 0f 85 97 00 00 00 49 8d 7d RSP: 0018:ffffc900091afb18 EFLAGS: 00010a06 RAX: dffffc0000000000 RBX: ffff8880a71664b8 RCX: ffffffff8724984f RDX: 17776c2000003777 RSI: ffffffff8717d437 RDI: ffff8880a71664c0 RBP: ffff8880a71664b8 R08: 0000000000000001 R09: ffff8880a7166067 R10: 0000000000000009 R11: 00000000000ccae8 R12: bbbb61000001bbbb R13: bb60000000bbbbbb R14: 00000060000000bb R15: 0000000000000005 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000ca8660 CR3: 000000009d89f000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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.