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 EAEC1C3F68F for ; Sat, 28 Dec 2019 06:15:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C7FB221582 for ; Sat, 28 Dec 2019 06:15:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726369AbfL1GPK (ORCPT ); Sat, 28 Dec 2019 01:15:10 -0500 Received: from mail-io1-f70.google.com ([209.85.166.70]:48801 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725957AbfL1GPK (ORCPT ); Sat, 28 Dec 2019 01:15:10 -0500 Received: by mail-io1-f70.google.com with SMTP id e15so8522013ioh.15 for ; Fri, 27 Dec 2019 22:15:09 -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=2HOXPV+14RU9R447cOV0dBvVZbunalY8Ec32XNcdQ0Y=; b=ZoWw5+j90mmEVAnKwMKDk2IvFK4fdx9SKbiPB/HeTSPiCubImcyDz5L6hlAozvHbn8 5WA2wP7Hz65A8hznubT7A1lc9CGR97Us1morIwh5lvIt3oUYLmIm07ztv8lEhP5HrWw1 4rkDTtlkbla5P4rPGkpQ6TkZArB7zQvIMR3tW0gNIjSjkISp/mYL2AayO9D4vQscPwOU KMOVpWdrZCDfRffl58+3+5ere1N2dD/DMZrjbnOj4mi6AB1pcMWWHRXL3agbvVG3YSbQ MTSeVREbH8zG0yjLAp3hXTgYi8/n2lqCCWfQ9/bT/ylbj1XWhxd3v5rTLlMFZXf0VmVb r6Ww== X-Gm-Message-State: APjAAAWP9f9ivcHyW8KBykS32dSHMN73wQwxNMcQ1tMzyENq2CVXTLqQ rKIFGrFpPLz2bYow+r+UuxtDCsRkm0yvMNzRNReo+itMTZEg X-Google-Smtp-Source: APXvYqxckNFrsGfJfYnb+Vcaqz+NOfZ27b0QhIttqwc3dJbOO0t/9X2f0QIiNwKOeX7r1sF44MKOobbKleutPxYIBgGUAetvq61l MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1014:: with SMTP id n20mr47443147ilj.172.1577513709408; Fri, 27 Dec 2019 22:15:09 -0800 (PST) Date: Fri, 27 Dec 2019 22:15:09 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000004718ff059abd88ef@google.com> Subject: general protection fault in nf_ct_netns_do_get 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: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 46cf053e Linux 5.5-rc3 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14188971e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=ed9d672709340e35 dashboard link: https://syzkaller.appspot.com/bug?extid=19616eedf6fd8e241e50 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14a47ab9e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=170f2485e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+19616eedf6fd8e241e50@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: 9171 Comm: syz-executor797 Not tainted 5.5.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline] RIP: 0010:net_generic include/net/netns/generic.h:45 [inline] RIP: 0010:nf_ct_netns_do_get+0xd2/0x7e0 net/netfilter/nf_conntrack_proto.c:449 Code: 22 22 fb 45 84 f6 0f 84 5c 03 00 00 e8 07 21 22 fb 49 8d bc 24 68 13 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 9f 06 00 00 4d 8b b4 24 68 13 00 00 e8 47 59 0e RSP: 0018:ffffc90001f177a8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000003 RCX: ffffffff86531056 RDX: 000000000000026d RSI: ffffffff86530ce9 RDI: 0000000000001368 RBP: ffffc90001f177e8 R08: ffff88808fd96200 R09: ffffed1015d0703d R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 R13: 000000000000002a R14: 0000000000000001 R15: 0000000000000003 FS: 00000000009fd880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200008a0 CR3: 0000000093cc3000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nf_ct_netns_get+0x41/0x150 net/netfilter/nf_conntrack_proto.c:601 connmark_tg_check+0x61/0xe0 net/netfilter/xt_connmark.c:106 xt_check_target+0x283/0x690 net/netfilter/x_tables.c:1019 check_target net/ipv4/netfilter/arp_tables.c:399 [inline] find_check_entry net/ipv4/netfilter/arp_tables.c:422 [inline] translate_table+0x1005/0x1d70 net/ipv4/netfilter/arp_tables.c:572 do_replace net/ipv4/netfilter/arp_tables.c:977 [inline] do_arpt_set_ctl+0x310/0x640 net/ipv4/netfilter/arp_tables.c:1456 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x77/0xd0 net/netfilter/nf_sockopt.c:115 ip_setsockopt net/ipv4/ip_sockglue.c:1260 [inline] ip_setsockopt+0xdf/0x100 net/ipv4/ip_sockglue.c:1240 udp_setsockopt+0x68/0xb0 net/ipv4/udp.c:2639 sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3149 __sys_setsockopt+0x261/0x4c0 net/socket.c:2117 __do_sys_setsockopt net/socket.c:2133 [inline] __se_sys_setsockopt net/socket.c:2130 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:2130 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441369 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:00007ffed53f1838 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441369 RDX: 0000000000000060 RSI: 0a02000000000000 RDI: 0000000000000003 RBP: 00000000006cb018 R08: 0000000000000418 R09: 00000000004002c8 R10: 0000000020000880 R11: 0000000000000246 R12: 0000000000402bf0 R13: 0000000000402c80 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 86b70d3f20194272 ]--- RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline] RIP: 0010:net_generic include/net/netns/generic.h:45 [inline] RIP: 0010:nf_ct_netns_do_get+0xd2/0x7e0 net/netfilter/nf_conntrack_proto.c:449 Code: 22 22 fb 45 84 f6 0f 84 5c 03 00 00 e8 07 21 22 fb 49 8d bc 24 68 13 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 9f 06 00 00 4d 8b b4 24 68 13 00 00 e8 47 59 0e RSP: 0018:ffffc90001f177a8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000003 RCX: ffffffff86531056 RDX: 000000000000026d RSI: ffffffff86530ce9 RDI: 0000000000001368 RBP: ffffc90001f177e8 R08: ffff88808fd96200 R09: ffffed1015d0703d R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 R13: 000000000000002a R14: 0000000000000001 R15: 0000000000000003 FS: 00000000009fd880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200008a0 CR3: 0000000093cc3000 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