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=-5.7 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 33300C64E79 for ; Mon, 24 Dec 2018 15:24:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0B79621873 for ; Mon, 24 Dec 2018 15:24:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725855AbeLXPYG (ORCPT ); Mon, 24 Dec 2018 10:24:06 -0500 Received: from mail-io1-f69.google.com ([209.85.166.69]:45158 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725770AbeLXPYF (ORCPT ); Mon, 24 Dec 2018 10:24:05 -0500 Received: by mail-io1-f69.google.com with SMTP id r65so13341522iod.12 for ; Mon, 24 Dec 2018 07:24:04 -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=uMvOKlhpyzpTsHKV7RdGnzVYKF9eRVH1jyjiZOu+oWU=; b=SuSovkg9JJk9WaOmUCvoi0730bkhyl0ZN8CA8apppvdf0HJhsyhIGKiR6DLRyEXoHs jWJAmochbQD5N0lqAAbxO/oiI31jiyudlY9iMtAfPjMIWpq9t8BNCaNDg2llTWdYGzlr oH6N4rnSbXIkGxBn78VszXjZlDCXAfatC3VwmUbtmpIWw9B6Mq37ZuNl/Tj+pgGUR9Nu hI6OUGx33oFHm2BOUMj5uzOQJai+GVykulHUIpPXWQj/VJYFRM3VbTJJyxgvGnxs+vS0 o1p1JEu10PnUCNX1pHmZi5LNOZO6qNjrP4NanKMONteCi8+G+O1qjPmIn7zl4VBS2mkf ZIhg== X-Gm-Message-State: AJcUukcuK65zxB2xB+VpOhylgb5CIKrAG3Lq2mmrvw1o54EuOXHGj7jb KFVhPGJXNFVMAg3CWhDeeHFOO6XmE60zhjPGoQzV1xw49RdC X-Google-Smtp-Source: ALg8bN7P2MvB6JskFfq2QUpel85kKSvtsQiq8mk1CvuK9ggW9F2ZghDoUUbF44cBRjcTFWiFDoRzqpqMzDzJ6KjmxCrzRtwlAY68 MIME-Version: 1.0 X-Received: by 2002:a6b:c84a:: with SMTP id y71mr12681199iof.10.1545665044173; Mon, 24 Dec 2018 07:24:04 -0800 (PST) Date: Mon, 24 Dec 2018 07:24:04 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e66233057dc62ff3@google.com> Subject: general protection fault in xfrm_policy_insert_list From: syzbot To: davem@davemloft.net, herbert@gondor.apana.org.au, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, steffen.klassert@secunet.com, 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: ce28bb445388 Merge git://git.kernel.org/pub/scm/linux/kern.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=17803ac3400000 kernel config: https://syzkaller.appspot.com/x/.config?x=67a2081147a23142 dashboard link: https://syzkaller.appspot.com/bug?extid=e879931aaae5c1abca56 compiler: gcc (GCC) 8.0.1 20180413 (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+e879931aaae5c1abca56@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: 1 PID: 6146 Comm: syz-executor5 Not tainted 4.20.0-rc7+ #358 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:xfrm_policy_insert_list+0x174/0x1020 net/xfrm/xfrm_policy.c:1532 kobject: 'loop0' (000000008b3a9204): kobject_uevent_env Code: ff ff ff 48 c1 e8 03 4c 01 e0 48 89 85 20 ff ff ff e8 40 d6 b3 fa 48 8d bb 19 02 00 00 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <42> 0f b6 04 20 38 d0 7f 08 84 c0 0f 85 f5 0b 00 00 44 0f b6 ab 19 RSP: 0018:ffff88819772f098 EFLAGS: 00010202 RAX: 00000025800000bf RBX: 0000012c000003e0 RCX: ffffc9000fe54000 RDX: 0000000000000001 RSI: ffffffff86cae280 RDI: 0000012c000005f9 kobject: 'loop0' (000000008b3a9204): fill_kobj_path: path = '/devices/virtual/block/loop0' RBP: ffff88819772f1c0 R08: ffff8881d32c2480 R09: 1ffff11037615f21 R10: 0000000000000003 R11: ffff888192b2a600 R12: dffffc0000000000 R13: 0000000000000000 R14: 000000008bc53300 R15: 0000000000000000 FS: 00007fb18f7ca700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'loop3' (00000000bef5b68b): kobject_uevent_env CR2: 00000000004d9300 CR3: 0000000180ff1000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kobject: 'loop3' (00000000bef5b68b): fill_kobj_path: path = '/devices/virtual/block/loop3' xfrm_policy_inexact_insert+0x166/0xee0 net/xfrm/xfrm_policy.c:1195 kobject: 'loop0' (000000008b3a9204): kobject_uevent_env kobject: 'loop0' (000000008b3a9204): fill_kobj_path: path = '/devices/virtual/block/loop0' xfrm_policy_insert+0x639/0x850 net/xfrm/xfrm_policy.c:1570 xfrm_add_policy+0x2a0/0x6f0 net/xfrm/xfrm_user.c:1657 kobject: 'loop2' (000000000496a7a1): kobject_uevent_env xfrm_user_rcv_msg+0x44c/0x8e0 net/xfrm/xfrm_user.c:2663 kobject: 'loop2' (000000000496a7a1): fill_kobj_path: path = '/devices/virtual/block/loop2' netlink_rcv_skb+0x16c/0x430 net/netlink/af_netlink.c:2477 xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2671 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x59f/0x750 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1917 kobject: 'loop2' (000000000496a7a1): kobject_uevent_env sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2116 kobject: 'loop2' (000000000496a7a1): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000008b3a9204): kobject_uevent_env kobject: 'loop0' (000000008b3a9204): fill_kobj_path: path = '/devices/virtual/block/loop0' __sys_sendmsg+0x11d/0x280 net/socket.c:2154 kobject: 'loop2' (000000000496a7a1): kobject_uevent_env __do_sys_sendmsg net/socket.c:2163 [inline] __se_sys_sendmsg net/socket.c:2161 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2161 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 kobject: 'loop2' (000000000496a7a1): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000008b3a9204): kobject_uevent_env kobject: 'loop0' (000000008b3a9204): fill_kobj_path: path = '/devices/virtual/block/loop0' entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457669 Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb18f7c9c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457669 kobject: 'loop2' (000000000496a7a1): kobject_uevent_env RDX: 0000000000000000 RSI: 000000002014f000 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb18f7ca6d4 R13: 00000000004c44d8 R14: 00000000004d74e8 R15: 00000000ffffffff Modules linked in: ---[ end trace 818a477ec48fd0a4 ]--- kobject: 'loop2' (000000000496a7a1): fill_kobj_path: path = '/devices/virtual/block/loop2' RIP: 0010:xfrm_policy_insert_list+0x174/0x1020 net/xfrm/xfrm_policy.c:1532 Code: ff ff ff 48 c1 e8 03 4c 01 e0 48 89 85 20 ff ff ff e8 40 d6 b3 fa 48 8d bb 19 02 00 00 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <42> 0f b6 04 20 38 d0 7f 08 84 c0 0f 85 f5 0b 00 00 44 0f b6 ab 19 RSP: 0018:ffff88819772f098 EFLAGS: 00010202 RAX: 00000025800000bf RBX: 0000012c000003e0 RCX: ffffc9000fe54000 RDX: 0000000000000001 RSI: ffffffff86cae280 RDI: 0000012c000005f9 RBP: ffff88819772f1c0 R08: ffff8881d32c2480 R09: 1ffff11037615f21 R10: 0000000000000003 R11: ffff888192b2a600 R12: dffffc0000000000 R13: 0000000000000000 R14: 000000008bc53300 R15: 0000000000000000 FS: 00007fb18f7ca700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004d9300 CR3: 0000000180ff1000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'loop2' (000000000496a7a1): kobject_uevent_env 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.