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 E1787C33CAA for ; Tue, 21 Jan 2020 06:40:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AD82C21734 for ; Tue, 21 Jan 2020 06:40:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728811AbgAUGkJ (ORCPT ); Tue, 21 Jan 2020 01:40:09 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:38652 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726911AbgAUGkJ (ORCPT ); Tue, 21 Jan 2020 01:40:09 -0500 Received: by mail-il1-f198.google.com with SMTP id i67so1442184ilf.5 for ; Mon, 20 Jan 2020 22:40:08 -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=VRitl32ZgVi8jJ8iDoSO0IiVKSdozfDuXzo2Yu5la8Q=; b=TjH7ZdDBcKUEK7xXVr6PKDazd04IHXefd2B6BbDl5yoKB/cQ8eyOA1qWoNXjEKK9j8 zRM/p/sairj1a+ZnMkV8C5T/oqeGgZBurRpfYLLFr52uLnS/pg4w4nMv5C8enfFnL3Oj 9BZiAkT99r66jEV+6+rxuHuBIiWQC2B1cuR4cDJcuzgAvJAGRUsg6jbU7zXlKdTZkiuK xSLGLnRupSuEBQLMRI8kpycvLpeCQa0oTw16MSLRlVbblEzw5JmJZPanO8uXHhQtcQCh rLrBo4BQ/EvpuweGJhoviLmSeYT+ilz6Edi4ytzYeMIz0CyDL8vYim1kNVUNI84TrgWF 8lfw== X-Gm-Message-State: APjAAAXC7SLHMnNFZpeBaDnywhJNUpPtz6zO3ftcYGVSn6IA4CF9YxBK 8WMh9jf/J+otbCPR82+AChpxcbjpBGF341qhvEfcq2aIiGLn X-Google-Smtp-Source: APXvYqySbtxXbZlyaZABGQA4gd7GTyJ46ZhPFb75b3UyKRsPjM4zQwqZ5PNZlswvVpkPHGzZpnq9rUBGXSfp8nphBoe5CghEwLOr MIME-Version: 1.0 X-Received: by 2002:a92:d18a:: with SMTP id z10mr2559332ilz.48.1579588808224; Mon, 20 Jan 2020 22:40:08 -0800 (PST) Date: Mon, 20 Jan 2020 22:40:08 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ce3795059ca0ad2b@google.com> Subject: general protection fault in __nf_tables_chain_type_lookup 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" 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: b3f7e3f2 Merge ra.kernel.org:/pub/scm/linux/kernel/git/net.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=11f5dfaee00000 kernel config: https://syzkaller.appspot.com/x/.config?x=25af05ec22c1bcef dashboard link: https://syzkaller.appspot.com/bug?extid=c4a099076c8ad98e282d compiler: gcc (GCC) 9.0.0 20181231 (experimental) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+c4a099076c8ad98e282d@syzkaller.appspotmail.com 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: 24147 Comm: syz-executor.4 Not tainted 5.5.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:strlen+0x1f/0xa0 lib/string.c:527 Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24 RSP: 0018:ffffc90008d6f048 EFLAGS: 00010296 RAX: dffffc0000000000 RBX: fffffffffffffdc0 RCX: ffffc900114fb000 RDX: 0000000000000000 RSI: ffffffff83afcbcc RDI: 0000000000000000 RBP: ffffc90008d6f060 R08: ffff88805fb28640 R09: ffff888091274c48 R10: fffff520011ade2f R11: ffffc90008d6f17f R12: 0000000000000000 R13: ffff888091274c48 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f6a77110700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000024f0e80 CR3: 0000000093c3f000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: strlen include/linux/string.h:302 [inline] nla_strcmp+0x24/0x120 lib/nlattr.c:607 __nf_tables_chain_type_lookup+0xa3/0x160 net/netfilter/nf_tables_api.c:562 nf_tables_chain_type_lookup net/netfilter/nf_tables_api.c:613 [inline] nft_chain_parse_hook+0x2b8/0xa10 net/netfilter/nf_tables_api.c:1773 nf_tables_addchain.constprop.0+0x1c1/0x1520 net/netfilter/nf_tables_api.c:1899 nf_tables_newchain+0x1033/0x1820 net/netfilter/nf_tables_api.c:2207 nfnetlink_rcv_batch+0xf42/0x17a0 net/netfilter/nfnetlink.c:433 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:543 [inline] nfnetlink_rcv+0x3e7/0x460 net/netfilter/nfnetlink.c:561 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x59e/0x7e0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:672 ____sys_sendmsg+0x753/0x880 net/socket.c:2343 ___sys_sendmsg+0x100/0x170 net/socket.c:2397 __sys_sendmsg+0x105/0x1d0 net/socket.c:2430 __do_sys_sendmsg net/socket.c:2439 [inline] __se_sys_sendmsg net/socket.c:2437 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2437 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b349 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f6a7710fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f6a771106d4 RCX: 000000000045b349 RDX: 0000000000000080 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000917 R14: 00000000004ca810 R15: 000000000075bf2c Modules linked in: ---[ end trace ca4680ab3a32a755 ]--- RIP: 0010:strlen+0x1f/0xa0 lib/string.c:527 Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24 RSP: 0018:ffffc90008d6f048 EFLAGS: 00010296 RAX: dffffc0000000000 RBX: fffffffffffffdc0 RCX: ffffc900114fb000 RDX: 0000000000000000 RSI: ffffffff83afcbcc RDI: 0000000000000000 RBP: ffffc90008d6f060 R08: ffff88805fb28640 R09: ffff888091274c48 R10: fffff520011ade2f R11: ffffc90008d6f17f R12: 0000000000000000 R13: ffff888091274c48 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f6a77110700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcd75cf9c8 CR3: 0000000093c3f000 CR4: 00000000001406e0 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.