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=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 81DADC34034 for ; Tue, 18 Feb 2020 04:07:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6298820801 for ; Tue, 18 Feb 2020 04:07:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726363AbgBREHO (ORCPT ); Mon, 17 Feb 2020 23:07:14 -0500 Received: from mail-il1-f200.google.com ([209.85.166.200]:50763 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726261AbgBREHN (ORCPT ); Mon, 17 Feb 2020 23:07:13 -0500 Received: by mail-il1-f200.google.com with SMTP id z12so15943942ilh.17 for ; Mon, 17 Feb 2020 20:07:13 -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:message-id:subject:from:to; bh=uHglhlTsZL9nYXC1SuW5n8zSraL5OSomR7EKPnnITWs=; b=j/mtihZDyUiQqigOeJSSo4Adgs+bz+UobTPM9kr5r5tbLAeXrPefds0CdXlHFwZUOC VK21CHAay9qHOFNQNtwfOy+O5dKWWw4XoMb27R3N6jWhWdeoMo+SKkgcQDA4Ypd99Qga fnXzvQuq5I9cDqWZ+rj/5LJxYdGmmuVZDlEOmowjG8d4WStSWRlwH53sHHwUZD16iE6V gYOH+36HIz4YMmDrMNL/DPeQUEkjZPw5As5sCswEaNYdl2OwBf9wxFl9Zyn1N6UalcCP Z0fR76SdfaxVy71KtmZG+QkcUF/dtEGCkOu51j9dJNySNczK4/w1QSwPhjufPkpzoDPR k5Fw== X-Gm-Message-State: APjAAAXmmogmRbQ432hBrtyFkJOu/pYuQnnmjLAIwTqCpvqYhd8NGC54 E3K8oeQefs+9J+DKFb006tUcxMa0ksObUaUHH0hMqA3DMTeB X-Google-Smtp-Source: APXvYqykvr5lZYYJzLA1G3jokmMLxLQMutu/6LzMIis/OPHm53DIYqPrXMQ1lTAZYZ7MZTpQKx8uB0HWAK4G5RctK5UqXjFwwjDg MIME-Version: 1.0 X-Received: by 2002:a6b:d912:: with SMTP id r18mr13781201ioc.306.1581998832890; Mon, 17 Feb 2020 20:07:12 -0800 (PST) Date: Mon, 17 Feb 2020 20:07:12 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007838f1059ed1cea5@google.com> Subject: general protection fault in l2cap_sock_getsockopt 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-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: c25a951c Add linux-next specific files for 20200217 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=171b1a29e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=c727d8fc485ff049 dashboard link: https://syzkaller.appspot.com/bug?extid=6446a589a5ca34dd6e8b compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10465579e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16dabb11e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+6446a589a5ca34dd6e8b@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 9844 Comm: syz-executor679 Not tainted 5.6.0-rc2-next-20200217-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:l2cap_sock_getsockopt+0x7d3/0x1200 net/bluetooth/l2cap_sock.c:613 Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 a0 09 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 1f 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 75 09 00 00 48 8b 3b e8 cb be f6 ff be 67 02 00 RSP: 0018:ffffc900062f7d20 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87253e8c RDX: 0000000000000000 RSI: ffffffff87253f44 RDI: 0000000000000001 RBP: ffffc900062f7e00 R08: ffff88808a5001c0 R09: fffffbfff16a3f80 R10: fffffbfff16a3f7f R11: ffffffff8b51fbff R12: 0000000000000000 R13: 1ffff92000c5efa7 R14: ffff8880a9a79000 R15: ffff8880a1d92000 FS: 0000000001ccd880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000140 CR3: 0000000097113000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __sys_getsockopt+0x16d/0x310 net/socket.c:2175 __do_sys_getsockopt net/socket.c:2190 [inline] __se_sys_getsockopt net/socket.c:2187 [inline] __x64_sys_getsockopt+0xbe/0x150 net/socket.c:2187 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x440149 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffcb256f088 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440149 RDX: 000000000000000e RSI: 0000000000000112 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 0000000020000140 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019d0 R13: 0000000000401a60 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 63f0b6416dbaab7d ]--- RIP: 0010:l2cap_sock_getsockopt+0x7d3/0x1200 net/bluetooth/l2cap_sock.c:613 Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 a0 09 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 1f 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 75 09 00 00 48 8b 3b e8 cb be f6 ff be 67 02 00 RSP: 0018:ffffc900062f7d20 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87253e8c RDX: 0000000000000000 RSI: ffffffff87253f44 RDI: 0000000000000001 RBP: ffffc900062f7e00 R08: ffff88808a5001c0 R09: fffffbfff16a3f80 R10: fffffbfff16a3f7f R11: ffffffff8b51fbff R12: 0000000000000000 R13: 1ffff92000c5efa7 R14: ffff8880a9a79000 R15: ffff8880a1d92000 FS: 0000000001ccd880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000140 CR3: 0000000097113000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This bug 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 bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches