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 341B2C33C8C for ; Mon, 6 Jan 2020 20:44:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0C6F3207FD for ; Mon, 6 Jan 2020 20:44:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726830AbgAFUoK (ORCPT ); Mon, 6 Jan 2020 15:44:10 -0500 Received: from mail-io1-f71.google.com ([209.85.166.71]:51960 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726657AbgAFUoK (ORCPT ); Mon, 6 Jan 2020 15:44:10 -0500 Received: by mail-io1-f71.google.com with SMTP id t18so31313251iob.18 for ; Mon, 06 Jan 2020 12:44:09 -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=nUQh4ZT3khBGylzmoNcHUNv5lP3x4Ibw/P8aybZACnA=; b=snFAQtj1fWd44SR0iu8nkTG8ygPfVCwJlWIFhH0TQTxg6rq1U1J5xnx3iU2laoG5e3 vnUDOnoXWUnwMsFP0AJWA8ejD3fYADNsXy+hKCa6jA2ZN5aqAVQMIGQeiZmRwR1TYX1W ywd5LJJ1IiY5YO/GbFeef3/Y2s4R75yN2Hc6tXmR+jNMred3O2Oh3of00qqzS0xar6JT ujFg8lWztGTMl+eFjBWKsJkCaK0tzgAIY0sO2ozJP0q59Zu2c6P/C9FM8PhARC8DKXgY w9DZMWE5Ve9r/hk7mHndH7le3jEp53kjD2RU7b7JOudSGwKFSM6BhYWfaEz7jzWh1g4c 14Xg== X-Gm-Message-State: APjAAAXZRuCzkiJvcwwzbWsNJU/h5phQZtD75QRNKhYE8XQthNXsiKfM VwyNU+yoY+MlwPdOoe+aiPp2Sdz/YZ4+tiokgfyY2wgM6QIH X-Google-Smtp-Source: APXvYqxVpO4G/iLgXyl1N6TUqGS8rrbpxq2N618JwYm16p7e+FIf6poohg1Gm26rgxXBvcLNeTA8zFJbyzY39HT2yFDCXwH/k3GA MIME-Version: 1.0 X-Received: by 2002:a6b:5503:: with SMTP id j3mr68369856iob.142.1578343449021; Mon, 06 Jan 2020 12:44:09 -0800 (PST) Date: Mon, 06 Jan 2020 12:44:09 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000009cd5e0059b7eb836@google.com> Subject: general protection fault in dccp_timeout_nlattr_to_obj From: syzbot To: coreteam@netfilter.org, davem@davemloft.net, fw@strlen.de, kadlec@netfilter.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes 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: d89091a4 macb: Don't unregister clks unconditionally git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=11b98466e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=f2f3ef188b7e16cf dashboard link: https://syzkaller.appspot.com/bug?extid=46a4ad33f345d1dd346e compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12ff2869e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16693751e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+46a4ad33f345d1dd346e@syzkaller.appspotmail.com netlink: 24 bytes leftover after parsing attributes in process `syz-executor813'. kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 9522 Comm: syz-executor813 Not tainted 5.5.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:dccp_timeout_nlattr_to_obj+0x60/0x230 net/netfilter/nf_conntrack_proto_dccp.c:682 Code: 89 d8 48 c1 e8 03 42 0f b6 14 30 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a1 01 00 00 4c 89 e0 44 8b 3b 48 c1 e8 03 <42> 0f b6 14 30 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffffc90001fd73d8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffffff8a4cd6fc RCX: ffffffff866323e9 RDX: 0000000000000000 RSI: ffffffff866117d5 RDI: ffff888098c2cf00 RBP: ffffc90001fd7418 R08: ffff88809f51c280 R09: ffff888098c2cf00 R10: ffffed10131859e7 R11: ffff888098c2cf3f R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000005dc0 FS: 00000000022f4880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000200 CR3: 00000000a6a68000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ctnl_timeout_parse_policy+0x150/0x1d0 net/netfilter/nfnetlink_cttimeout.c:67 cttimeout_default_set+0x150/0x1c0 net/netfilter/nfnetlink_cttimeout.c:368 nfnetlink_rcv_msg+0xcf2/0xfb0 net/netfilter/nfnetlink.c:229 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 nfnetlink_rcv+0x1ba/0x460 net/netfilter/nfnetlink.c:563 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x58c/0x7d0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:659 ____sys_sendmsg+0x753/0x880 net/socket.c:2330 ___sys_sendmsg+0x100/0x170 net/socket.c:2384 __sys_sendmsg+0x105/0x1d0 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2424 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4401e9 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:00007ffe699346c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401e9 RDX: 0000000000000940 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a70 R13: 0000000000401b00 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0b60d1e6ef381959 ]--- RIP: 0010:dccp_timeout_nlattr_to_obj+0x60/0x230 net/netfilter/nf_conntrack_proto_dccp.c:682 Code: 89 d8 48 c1 e8 03 42 0f b6 14 30 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a1 01 00 00 4c 89 e0 44 8b 3b 48 c1 e8 03 <42> 0f b6 14 30 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffffc90001fd73d8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffffff8a4cd6fc RCX: ffffffff866323e9 RDX: 0000000000000000 RSI: ffffffff866117d5 RDI: ffff888098c2cf00 RBP: ffffc90001fd7418 R08: ffff88809f51c280 R09: ffff888098c2cf00 R10: ffffed10131859e7 R11: ffff888098c2cf3f R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000005dc0 FS: 00000000022f4880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000000a6a68000 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