From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp.codeaurora.org by pdx-caf-mail.web.codeaurora.org (Dovecot) with LMTP id YZq/NVdDHFtXYgAAmS7hNA ; Sat, 09 Jun 2018 22:47:09 +0000 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id D76A9607E4; Sat, 9 Jun 2018 22:47:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.4 required=2.0 tests=BAYES_00,FROM_LOCAL_HEX, MAILING_LIST_MULTI,SORTED_RECIPS autolearn=no autolearn_force=no version=3.4.0 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by smtp.codeaurora.org (Postfix) with ESMTP id 17013605A5; Sat, 9 Jun 2018 22:47:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 17013605A5 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none 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wB3GHejY9CgTA+Z+wAekeoikh5XoN+bgXZx6Bks15tDOZ1WqRI5WprLBUDrD+G06v9Gm L3LQ== X-Gm-Message-State: APt69E2E6Rg0ufdj4idFXkL2Ds3CynWjmBuN96i+fbNXpDSH3CMfLzua 9KX8Ok0vmSoqwS3m6hnrkIED+OBrc6lbybwPVNJxW4xLk/F8 X-Google-Smtp-Source: ADUXVKKU6HoEeeYe5NeKa7Hp27vWJ+M+surkN5kfD5h+EUNNEJNSduDAHinbx0bUkQrLGkbfOaDAG9t+X3LuhEVEXkW8I4v5XZqT MIME-Version: 1.0 X-Received: by 2002:a24:b90d:: with SMTP id w13-v6mr5801502ite.18.1528584423317; Sat, 09 Jun 2018 15:47:03 -0700 (PDT) Date: Sat, 09 Jun 2018 15:47:03 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000008fa9d0056e3d4bc9@google.com> Subject: BUG: unable to handle kernel paging request in ebt_do_table From: syzbot To: bridge@lists.linux-foundation.org, coreteam@netfilter.org, davem@davemloft.net, fw@strlen.de, kadlec@blackhole.kfki.hu, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org, stephen@networkplumber.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: 7d3bf613e99a Merge tag 'libnvdimm-for-4.18' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=101c56bf800000 kernel config: https://syzkaller.appspot.com/x/.config?x=f04d8d0a2afb789a dashboard link: https://syzkaller.appspot.com/bug?extid=93f34882275ae7caf9db compiler: gcc (GCC) 8.0.1 20180413 (experimental) syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=10bdbebf800000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14a8a0cf800000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+93f34882275ae7caf9db@syzkaller.appspotmail.com IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready 8021q: adding VLAN 0 to HW filter on device team0 IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready BUG: unable to handle kernel paging request at ffffc9005c3ca003 PGD 1da946067 P4D 1da946067 PUD 0 Oops: 0000 [#1] SMP KASAN CPU: 0 PID: 4498 Comm: syz-executor667 Not tainted 4.17.0+ #92 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ebt_do_table+0x1983/0x2140 net/bridge/netfilter/ebtables.c:288 Code: 24 08 48 89 d8 48 89 9d d0 fe ff ff 48 c1 e8 03 42 0f b6 04 38 84 c0 74 08 3c 03 0f 8e 3b 06 00 00 48 8b 85 d0 fe ff ff 31 ff <8b> 18 89 de e8 04 e8 c0 fa 85 db 0f 85 a0 02 00 00 e8 e7 e6 c0 fa RSP: 0018:ffff8801b2e15c68 EFLAGS: 00010246 RAX: ffffc9005c3ca003 RBX: ffffc9005c3ca003 RCX: ffffc90001e1e000 RDX: 0000000000000000 RSI: ffffffff86b9558c RDI: 0000000000000000 RBP: ffff8801b2e15e38 R08: ffff8801b2588380 R09: ffffed003b5c46d6 R10: ffffed003b5c46d6 R11: ffff8801dae236b3 R12: ffffc90001e1e000 R13: ffffc90001e1a130 R14: ffffc90001e1a090 R15: dffffc0000000000 FS: 00000000006ed880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9005c3ca003 CR3: 00000001b3ba1000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ebt_in_hook+0x65/0x80 net/bridge/netfilter/ebtable_filter.c:63 ebt_out_hook+0x25/0x30 net/bridge/netfilter/ebtable_filter.c:63 nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline] nf_hook_slow+0xc2/0x1c0 net/netfilter/core.c:511 nf_hook include/linux/netfilter.h:242 [inline] NF_HOOK include/linux/netfilter.h:285 [inline] __br_forward+0x520/0xd90 net/bridge/br_forward.c:113 deliver_clone+0x61/0xc0 net/bridge/br_forward.c:129 maybe_deliver net/bridge/br_forward.c:170 [inline] br_flood+0x6f3/0x980 net/bridge/br_forward.c:212 br_dev_xmit+0x1121/0x1810 net/bridge/br_device.c:103 __netdev_start_xmit include/linux/netdevice.h:4128 [inline] netdev_start_xmit include/linux/netdevice.h:4137 [inline] xmit_one net/core/dev.c:3034 [inline] dev_hard_start_xmit+0x264/0xc10 net/core/dev.c:3050 __dev_queue_xmit+0x29da/0x3900 net/core/dev.c:3569 dev_queue_xmit+0x17/0x20 net/core/dev.c:3602 neigh_resolve_output+0x679/0xad0 net/core/neighbour.c:1361 neigh_output include/net/neighbour.h:483 [inline] ip_finish_output2+0xa5f/0x1840 net/ipv4/ip_output.c:229 ip_do_fragment+0x218e/0x2ac0 net/ipv4/ip_output.c:675 ip_fragment.constprop.49+0x179/0x240 net/ipv4/ip_output.c:546 ip_finish_output+0x6cb/0xf80 net/ipv4/ip_output.c:315 NF_HOOK_COND include/linux/netfilter.h:276 [inline] ip_output+0x21b/0x850 net/ipv4/ip_output.c:405 dst_output include/net/dst.h:444 [inline] ip_local_out+0xc5/0x1b0 net/ipv4/ip_output.c:124 ip_send_skb+0x40/0xe0 net/ipv4/ip_output.c:1435 udp_send_skb.isra.39+0x6b7/0x11d0 net/ipv4/udp.c:824 udp_push_pending_frames+0x5c/0xf0 net/ipv4/udp.c:852 udp_sendmsg+0x17d1/0x3970 net/ipv4/udp.c:1152 udpv6_sendmsg+0x28c8/0x35f0 net/ipv6/udp.c:1200 inet_sendmsg+0x19f/0x690 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:643 __sys_sendto+0x3d7/0x670 net/socket.c:1821 __do_sys_sendto net/socket.c:1833 [inline] __se_sys_sendto net/socket.c:1829 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1829 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441af9 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 6b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffeebd76c18 EFLAGS: 00000213 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441af9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 00000000006cd018 R08: 0000000020000180 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000213 R12: 00000000004027f0 R13: 0000000000402880 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) CR2: ffffc9005c3ca003 ---[ end trace b04e96b1e335c4f5 ]--- RIP: 0010:ebt_do_table+0x1983/0x2140 net/bridge/netfilter/ebtables.c:288 Code: 24 08 48 89 d8 48 89 9d d0 fe ff ff 48 c1 e8 03 42 0f b6 04 38 84 c0 74 08 3c 03 0f 8e 3b 06 00 00 48 8b 85 d0 fe ff ff 31 ff <8b> 18 89 de e8 04 e8 c0 fa 85 db 0f 85 a0 02 00 00 e8 e7 e6 c0 fa RSP: 0018:ffff8801b2e15c68 EFLAGS: 00010246 RAX: ffffc9005c3ca003 RBX: ffffc9005c3ca003 RCX: ffffc90001e1e000 RDX: 0000000000000000 RSI: ffffffff86b9558c RDI: 0000000000000000 RBP: ffff8801b2e15e38 R08: ffff8801b2588380 R09: ffffed003b5c46d6 R10: ffffed003b5c46d6 R11: ffff8801dae236b3 R12: ffffc90001e1e000 R13: ffffc90001e1a130 R14: ffffc90001e1a090 R15: dffffc0000000000 FS: 00000000006ed880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc9005c3ca003 CR3: 00000001b3ba1000 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#bug-status-tracking for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches