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 27552C43387 for ; Tue, 8 Jan 2019 06:41:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E74E12087E for ; Tue, 8 Jan 2019 06:41:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728055AbfAHGlG (ORCPT ); Tue, 8 Jan 2019 01:41:06 -0500 Received: from mail-io1-f71.google.com ([209.85.166.71]:34796 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727927AbfAHGlE (ORCPT ); Tue, 8 Jan 2019 01:41:04 -0500 Received: by mail-io1-f71.google.com with SMTP id q16so2441723ios.1 for ; Mon, 07 Jan 2019 22:41:04 -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=YGzTGMSTMWR5RM3X0S7BndkhUMgQwpYf2pl9MNeMXdg=; b=jTFu9lvAMJcPyt+QCNdS3E8ejLG8vYHszkDmaaUfoMgS4FQPSQP0OV6sFFDUur1E8G VOzu+jo9dj6VnjMtUFx7npSFjIuRkMmobNLQsYAKkYBK7MNGkM7LQhPkkpyVOoSIqwkF XKh0AaLqrAbOAumGCkcXByH1DmwtsHdPT7UDijvmTDMdkbS/MIgqqoeMQeuS2CQEXfvH ARzbS5Yide1QZcrGCscAYvD8h0lkIyQmBoYnyN5/jf+S+C1C3mR4Q++Q6RxPc33uFY6A 1ZvgLntohIfiGC6uXX0po18Z9Bb6slZIs1m+jCkMyvz+p4BegLicV3u93TzBGFVVvF16 tp/Q== X-Gm-Message-State: AJcUukfpmB2CJqMVR7X91Erq54V1xEqb7+gKBFqBRFURhOXVYBaYXKKm faMKK9c86m+0/Ttp4+YdugjjCzuKgmm3lDLpOyEE338C/M5L X-Google-Smtp-Source: ALg8bN4o4teqKexAzsTaIoDhd6aPXjHONZeoGjGDp0ueU6HtC3846c9aWAo2QDbmrd7Z7rwZLGP/1mWthXlnk38x2d2SP4r/0glI MIME-Version: 1.0 X-Received: by 2002:a02:b807:: with SMTP id o7mr344427jam.23.1546929663721; Mon, 07 Jan 2019 22:41:03 -0800 (PST) Date: Mon, 07 Jan 2019 22:41:03 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000194b2a057eeca129@google.com> Subject: general protection fault in ipcomp_init_state 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: b71acb0e3721 Merge branch 'linus' of git://git.kernel.org/.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=17f383bb400000 kernel config: https://syzkaller.appspot.com/x/.config?x=b03c5892bb940c76 dashboard link: https://syzkaller.appspot.com/bug?extid=0864346ae616fffdd602 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+0864346ae616fffdd602@syzkaller.appspotmail.com kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access sit: non-ECT from 172.20.255.187 with TOS=0x1 general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 25310 Comm: syz-executor0 Not tainted 4.20.0+ #3 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:strcmp+0x3a/0xb0 lib/string.c:328 Code: 41 55 41 54 53 48 89 fb 48 83 ec 08 eb 08 45 84 e4 74 5f 4c 89 ee 48 89 df 48 83 c3 01 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <42> 0f b6 04 30 38 d0 7f 04 84 c0 75 54 44 0f b6 63 ff 4c 8d 6e 01 RSP: 0018:ffff88806190f3b0 EFLAGS: 00010246 RAX: 0000000000000007 RBX: 0000000000000039 RCX: 1ffff11010bdaced RDX: 0000000000000000 RSI: ffff88809c33d000 RDI: 0000000000000038 RBP: ffff88806190f3d8 R08: ffff8880642ba040 R09: fffffbfff1478e45 R10: ffff88806190f3d8 R11: ffffffff8a3c7227 R12: dffffc0000000000 R13: ffff8880a6199380 R14: dffffc0000000000 R15: ffff88806190f4a8 FS: 00007f6f19d31700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000002908c10 CR3: 0000000090cb7000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:288 [inline] ipcomp_init_state+0x244/0xbc0 net/xfrm/xfrm_ipcomp.c:363 ipcomp4_init_state+0x10d/0xb10 net/ipv4/ipcomp.c:137 __xfrm_init_state+0x62a/0x1060 net/xfrm/xfrm_state.c:2302 xfrm_init_state+0x1e/0x80 net/xfrm/xfrm_state.c:2328 pfkey_msg2xfrm_state net/key/af_key.c:1307 [inline] pfkey_add+0x1da8/0x3180 net/key/af_key.c:1524 pfkey_process+0x6d2/0x810 net/key/af_key.c:2844 pfkey_sendmsg+0x5bb/0xfc0 net/key/af_key.c:3683 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:631 sit: non-ECT from 172.20.255.187 with TOS=0x1 ___sys_sendmsg+0x7ec/0x910 net/socket.c:2116 __sys_sendmsg+0x112/0x270 net/socket.c:2154 __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+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ec9 Code: 6d b7 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 kobject: 'loop3' (00000000958bbf02): kobject_uevent_env RSP: 002b:00007f6f19d30c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6f19d316d4 R13: 00000000004c5305 R14: 00000000004d8d70 R15: 00000000ffffffff Modules linked in: ---[ end trace b27bff8084733df2 ]--- kobject: 'loop3' (00000000958bbf02): fill_kobj_path: path = '/devices/virtual/block/loop3' RIP: 0010:strcmp+0x3a/0xb0 lib/string.c:328 kobject: 'loop4' (00000000a9a61426): kobject_uevent_env Code: 41 55 41 54 53 48 89 fb 48 83 ec 08 eb 08 45 84 e4 74 5f 4c 89 ee 48 89 df 48 83 c3 01 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <42> 0f b6 04 30 38 d0 7f 04 84 c0 75 54 44 0f b6 63 ff 4c 8d 6e 01 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. netlink: 'syz-executor1': attribute type 1 has an invalid length. kobject: 'loop4' (00000000a9a61426): fill_kobj_path: path = '/devices/virtual/block/loop4' sit: non-ECT from 172.20.255.187 with TOS=0x1 netlink: 'syz-executor1': attribute type 1 has an invalid length. kobject: 'loop1' (0000000079f16328): kobject_uevent_env RSP: 0018:ffff88806190f3b0 EFLAGS: 00010246 kobject: 'loop1' (0000000079f16328): fill_kobj_path: path = '/devices/virtual/block/loop1' RAX: 0000000000000007 RBX: 0000000000000039 RCX: 1ffff11010bdaced kobject: 'loop2' (00000000ab521588): kobject_uevent_env sit: non-ECT from 172.20.255.187 with TOS=0x1 RDX: 0000000000000000 RSI: ffff88809c33d000 RDI: 0000000000000038 kobject: 'loop2' (00000000ab521588): fill_kobj_path: path = '/devices/virtual/block/loop2' netlink: 'syz-executor1': attribute type 1 has an invalid length. RBP: ffff88806190f3d8 R08: ffff8880642ba040 R09: fffffbfff1478e45 kobject: 'loop2' (00000000ab521588): kobject_uevent_env kobject: 'loop2' (00000000ab521588): fill_kobj_path: path = '/devices/virtual/block/loop2' R10: ffff88806190f3d8 R11: ffffffff8a3c7227 R12: dffffc0000000000 R13: ffff8880a6199380 R14: dffffc0000000000 R15: ffff88806190f4a8 kobject: 'loop1' (0000000079f16328): kobject_uevent_env FS: 00007f6f19d31700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 kobject: 'loop1' (0000000079f16328): fill_kobj_path: path = '/devices/virtual/block/loop1' CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000070a158 CR3: 0000000090cb7000 CR4: 00000000001406e0 kobject: 'loop5' (00000000a2544941): kobject_uevent_env DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'loop5' (00000000a2544941): fill_kobj_path: path = '/devices/virtual/block/loop5' --- This bug is generated by a bot. 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