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=-5.6 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_PASS,URIBL_BLOCKED autolearn=ham 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 3188DC04AB1 for ; Thu, 9 May 2019 12:40:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 071C821479 for ; Thu, 9 May 2019 12:40:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726694AbfEIMkI (ORCPT ); Thu, 9 May 2019 08:40:08 -0400 Received: from mail-it1-f197.google.com ([209.85.166.197]:37447 "EHLO mail-it1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726054AbfEIMkH (ORCPT ); Thu, 9 May 2019 08:40:07 -0400 Received: by mail-it1-f197.google.com with SMTP id d140so2003747itc.2 for ; Thu, 09 May 2019 05:40:06 -0700 (PDT) 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=VyqBr1id97VRLhzrYgDkh5ZZv3ItHm0fzkMfIK+ARG0=; b=qvyXeqBij0XFdlDpoJ+eKW4/RPgubkeHDeud9YCee4DVjn1+QzZP6eqZRcfgOl5Hck 1LaklnAGt6V6dJrucBhUgu7TRwRE1bMIvtra72I0uKtHowHulYe2aC3jIi/viBIcQ+dE EoEFDVKWiqEM0dIc+eqmgXx5Qypp4HyiprkXocUSJxDEHRs4LVQUmKHn1bcqhbWT3sU1 BrYfB9O6OCiKN3h7ryzHs+GyazEVK1kf7ZBE2nsezE/pasBTWp7C4rw3Bc9LljE/mTg+ SNrluL4AMCN6YD9hP/dx8belSaGaw3pp5wRuJop9/5jrFocX3Y6jyGnkZg7BK/c+XrYj EgXw== X-Gm-Message-State: APjAAAUU4KlnJAagNxAWd8pOlMw5kZaIyKjy6xYigbUw++/CX/9TLQAB se6JISC7XRIM3CTsardsiHzpwBHOA6lcKTWxPORBpu2SDhzI X-Google-Smtp-Source: APXvYqyqFxWPSWBlQAQbpymIsMyngWCAZkNJmM02vra0FtnBYwFdMbheSY8O6QJLU7GHmAH3uvbilYwL0MyUmzFU4xfq8wSXRQrq MIME-Version: 1.0 X-Received: by 2002:a24:e519:: with SMTP id g25mr2865118iti.7.1557405606411; Thu, 09 May 2019 05:40:06 -0700 (PDT) Date: Thu, 09 May 2019 05:40:06 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f10885058873bf83@google.com> Subject: BUG: unable to handle page fault for address: ADDR From: syzbot To: davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, yoshfuji@linux-ipv6.org 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: 80f23212 Merge git://git.kernel.org/pub/scm/linux/kernel/g.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=112de0d8a00000 kernel config: https://syzkaller.appspot.com/x/.config?x=40a58b399941db7e dashboard link: https://syzkaller.appspot.com/bug?extid=208b9694ae6aee1c7197 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+208b9694ae6aee1c7197@syzkaller.appspotmail.com New replicast peer: 172.20.20.187 BUG: unable to handle page fault for address: ffffde202758ca0b #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 17591 Comm: syz-executor.3 Not tainted 5.1.0+ #3 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:iptunnel_xmit_stats include/net/ip_tunnels.h:444 [inline] RIP: 0010:iptunnel_xmit+0x6e5/0x970 net/ipv4/ip_tunnel_core.c:94 Code: c1 e9 03 80 3c 11 00 0f 85 72 02 00 00 48 03 1c c5 60 70 6e 88 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 02 00 00 48 8d 7b 10 4d 63 e4 48 b8 00 00 00 RSP: 0018:ffff8880a0fb7008 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffff11013ac65040 RCX: 1ffffffff10dce0c RDX: 1fffe2202758ca0b RSI: ffffffff83344b4c RDI: ffff11013ac65058 RBP: ffff8880a0fb7068 R08: ffff888059df8140 R09: ffffed1015d06be0 R10: ffffed1015d06bdf R11: ffff8880ae835efb R12: 00000000000000fc R13: ffff88806bbfec40 R14: ffff88806a6a3714 R15: ffff8880a097a8c0 FS: 00007fcf84ffc700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffde202758ca0b CR3: 00000000970bb000 CR4: 00000000001406f0 Call Trace: udp_tunnel_xmit_skb+0x236/0x310 net/ipv4/udp_tunnel.c:191 tipc_udp_xmit.isra.0+0x805/0xcc0 net/tipc/udp_media.c:181 tipc_udp_send_msg+0x295/0x4a0 net/tipc/udp_media.c:247 tipc_bearer_xmit_skb+0x172/0x360 net/tipc/bearer.c:503 tipc_enable_bearer+0xac4/0xd20 net/tipc/bearer.c:328 __tipc_nl_bearer_enable+0x2de/0x3a0 net/tipc/bearer.c:899 tipc_nl_bearer_enable+0x23/0x40 net/tipc/bearer.c:907 genl_family_rcv_msg+0x753/0xf90 net/netlink/genetlink.c:629 genl_rcv_msg+0xca/0x16c net/netlink/genetlink.c:654 netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2486 genl_rcv+0x29/0x40 net/netlink/genetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline] netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1337 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1926 sock_sendmsg_nosec net/socket.c:660 [inline] sock_sendmsg+0x12e/0x170 net/socket.c:671 ___sys_sendmsg+0x81d/0x960 net/socket.c:2292 __sys_sendmsg+0x105/0x1d0 net/socket.c:2330 __do_sys_sendmsg net/socket.c:2339 [inline] __se_sys_sendmsg net/socket.c:2337 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2337 do_syscall_64+0x103/0x670 arch/x86/entry/common.c:298 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458da9 Code: ad b8 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 b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fcf84ffbc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458da9 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcf84ffc6d4 R13: 00000000004c6449 R14: 00000000004dad18 R15: 00000000ffffffff Modules linked in: CR2: ffffde202758ca0b ---[ end trace 7b8973c639719d58 ]--- RIP: 0010:iptunnel_xmit_stats include/net/ip_tunnels.h:444 [inline] RIP: 0010:iptunnel_xmit+0x6e5/0x970 net/ipv4/ip_tunnel_core.c:94 Code: c1 e9 03 80 3c 11 00 0f 85 72 02 00 00 48 03 1c c5 60 70 6e 88 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 18 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 02 00 00 48 8d 7b 10 4d 63 e4 48 b8 00 00 00 RSP: 0018:ffff8880a0fb7008 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffff11013ac65040 RCX: 1ffffffff10dce0c RDX: 1fffe2202758ca0b RSI: ffffffff83344b4c RDI: ffff11013ac65058 RBP: ffff8880a0fb7068 R08: ffff888059df8140 R09: ffffed1015d06be0 R10: ffffed1015d06bdf R11: ffff8880ae835efb R12: 00000000000000fc R13: ffff88806bbfec40 R14: ffff88806a6a3714 R15: ffff8880a097a8c0 FS: 00007fcf84ffc700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffde202758ca0b CR3: 00000000970bb000 CR4: 00000000001406f0 --- 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.