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 autolearn=unavailable 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 E23D4C43381 for ; Mon, 11 Mar 2019 06:17:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A5C842075C for ; Mon, 11 Mar 2019 06:17:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726605AbfCKGRI (ORCPT ); Mon, 11 Mar 2019 02:17:08 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:41733 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725850AbfCKGRH (ORCPT ); Mon, 11 Mar 2019 02:17:07 -0400 Received: by mail-io1-f72.google.com with SMTP id p17so3388875ios.8 for ; Sun, 10 Mar 2019 23:17:06 -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=Eg2b6KeVnRA/TxzSC/PaWaijLIV4OGrMQxgr+m+p2t8=; b=PYlJVAlpEys2ip9YUfGfKqKgU6wgLaB01BIkeHdJPbZYEPFMTr0SqvMlCgzPpR55Uv wDD6SAVydlMSeAbA/4fCGMy0RVEpwcB/WUn2Hjasv75AOjh+4sCapIHOrFNXdxeZkv+l 6kfsKu1iP1m6Ue6z7/3jDZorscbedjrI3yFhqLxKG1KzOv4w79rvWlh52N1GvkB19esm Isu+1pxiFr3ckV97jBI1hpX/7wvPrNpob2HPbqv7x10uKfHRiK+4QYC5dV3Nu3J6SWlD sr56u7TCNODFh3AYtnqlJ7lOwbH+y9VDJJOn934k7TxQ163MtPfOgt7p6O7hqoTDx/vE 0cTg== X-Gm-Message-State: APjAAAUZFEtXYyyijKD5Ku7Ay9ISOh1Owr0xDqXeXD6YO6mdGFDhdt1p bX5NDvQIoS8JVTNDT2ourbJH8KIFnmy6QSBPm9U+oWQYD6sO X-Google-Smtp-Source: APXvYqxDnWDmC7kiiPPQ4totZTxUbj1vQVP3t68p0PgUxisqpL1aLriMruEQe2jBRj8CyFhoD3lXjVqJLj6B+e7sLyfXP40b37TJ MIME-Version: 1.0 X-Received: by 2002:a5d:9b95:: with SMTP id r21mr18885314iom.38.1552285026430; Sun, 10 Mar 2019 23:17:06 -0700 (PDT) Date: Sun, 10 Mar 2019 23:17:06 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000973c550583cb8562@google.com> Subject: general protection fault in xfrm_lookup_with_ifid 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: 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: d9862cfb Merge tag 'mips_5.1' of git://git.kernel.org/pub/.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=1160d5db200000 kernel config: https://syzkaller.appspot.com/x/.config?x=73d88a42238825ad dashboard link: https://syzkaller.appspot.com/bug?extid=2a7531cd068ddc9932f9 compiler: gcc (GCC) 9.0.0 20181231 (experimental) userspace arch: amd64 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+2a7531cd068ddc9932f9@syzkaller.appspotmail.com netlink: 'syz-executor.3': attribute type 1 has an invalid length. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 'syz-executor.3': attribute type 1 has an invalid length. 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: 13518 Comm: syz-executor.0 Not tainted 5.0.0+ #97 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:xfrm_lookup_with_ifid+0xf0/0x1cd0 net/xfrm/xfrm_policy.c:3027 Code: c1 e8 03 42 80 3c 28 00 0f 85 c3 19 00 00 48 8b 85 f0 fe ff ff 4c 8b 68 08 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 01 0f 8e 93 15 00 00 41 0f b7 45 00 4d netlink: 8 bytes leftover after parsing attributes in process `syz-executor.5'. RSP: 0018:ffff8880ae906d10 EFLAGS: 00010a06 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff8880429ecf00 RDX: 10c1072800000000 RSI: ffffffff85ff59da RDI: ffff8880a53d0040 RBP: ffff8880ae906e60 R08: 0000000000000006 R09: 0000000000000000 R10: ffffed1015d25bcf R11: 0000000000000000 R12: ffff8880429ecf00 R13: 8608394000000000 R14: ffff8880a11c769c R15: ffff8880ae906e38 FS: 00007f08dc344700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 kobject: 'loop4' (000000008af853b7): kobject_uevent_env CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'loop4' (000000008af853b7): fill_kobj_path: path = '/devices/virtual/block/loop4' CR2: 0000000000a5048d CR3: 000000009d7a7000 CR4: 00000000001406e0 Call Trace: kobject: 'loop1' (000000005d69384c): kobject_uevent_env kobject: 'loop1' (000000005d69384c): fill_kobj_path: path = '/devices/virtual/block/loop1' xfrm_lookup net/xfrm/xfrm_policy.c:3175 [inline] xfrm_lookup_route+0x3b/0x1f0 net/xfrm/xfrm_policy.c:3186 ip6_dst_lookup_flow+0x189/0x220 net/ipv6/ip6_output.c:1098 sctp_v6_get_dst+0x785/0x1d80 net/sctp/ipv6.c:293 kobject: 'loop3' (0000000061a5c8dc): kobject_uevent_env kobject: 'loop3' (0000000061a5c8dc): fill_kobj_path: path = '/devices/virtual/block/loop3' sctp_transport_route+0x132/0x370 net/sctp/transport.c:312 sctp_assoc_add_peer+0x53e/0xfc0 net/sctp/associola.c:678 sctp_process_param net/sctp/sm_make_chunk.c:2548 [inline] sctp_process_init+0x249f/0x2b20 net/sctp/sm_make_chunk.c:2361 kobject: 'loop4' (000000008af853b7): kobject_uevent_env kobject: 'loop4' (000000008af853b7): fill_kobj_path: path = '/devices/virtual/block/loop4' sctp_sf_do_5_1B_init+0x8ba/0xe50 net/sctp/sm_statefuns.c:416 sctp_do_sm+0x124/0x5390 net/sctp/sm_sideeffect.c:1188 kobject: 'loop2' (00000000daab3d23): kobject_uevent_env kobject: 'loop2' (00000000daab3d23): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000023199259): kobject_uevent_env kobject: 'loop5' (0000000023199259): fill_kobj_path: path = '/devices/virtual/block/loop5' sctp_endpoint_bh_rcv+0x451/0x950 net/sctp/endpointola.c:456 sctp_inq_push+0x1ea/0x290 net/sctp/inqueue.c:95 sctp_rcv+0x27d9/0x3550 net/sctp/input.c:271 sctp6_rcv+0x17/0x30 net/sctp/ipv6.c:1063 ip6_protocol_deliver_rcu+0x303/0x16c0 net/ipv6/ip6_input.c:394 ip6_input_finish+0x84/0x170 net/ipv6/ip6_input.c:434 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip6_input+0xe4/0x3f0 net/ipv6/ip6_input.c:443 dst_input include/net/dst.h:450 [inline] ip6_rcv_finish+0x1e7/0x320 net/ipv6/ip6_input.c:76 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ipv6_rcv+0x10e/0x420 net/ipv6/ip6_input.c:272 __netif_receive_skb_one_core+0x115/0x1a0 net/core/dev.c:4973 __netif_receive_skb+0x2c/0x1c0 net/core/dev.c:5083 process_backlog+0x206/0x750 net/core/dev.c:5923 napi_poll net/core/dev.c:6346 [inline] net_rx_action+0x4fa/0x1070 net/core/dev.c:6412 __do_softirq+0x266/0x95a kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1027 do_softirq.part.0+0x11a/0x170 kernel/softirq.c:337 do_softirq kernel/softirq.c:329 [inline] __local_bh_enable_ip+0x211/0x270 kernel/softirq.c:189 local_bh_enable include/linux/bottom_half.h:32 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:696 [inline] ip6_finish_output2+0xbcf/0x2550 net/ipv6/ip6_output.c:121 ip6_finish_output+0x577/0xc30 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip6_output+0x235/0x7f0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:444 [inline] NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip6_xmit+0xe41/0x20c0 net/ipv6/ip6_output.c:275 sctp_v6_xmit+0x313/0x660 net/sctp/ipv6.c:232 sctp_packet_transmit+0x1b8b/0x3660 net/sctp/output.c:641 sctp_packet_singleton net/sctp/outqueue.c:787 [inline] sctp_outq_flush_ctrl.constprop.0+0x741/0xd40 net/sctp/outqueue.c:918 sctp_outq_flush+0xe8/0x2790 net/sctp/outqueue.c:1200 sctp_outq_uncork+0x6c/0x80 net/sctp/outqueue.c:772 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1820 [inline] sctp_side_effects net/sctp/sm_sideeffect.c:1220 [inline] sctp_do_sm+0x513/0x5390 net/sctp/sm_sideeffect.c:1191 sctp_primitive_ASSOCIATE+0x9d/0xd0 net/sctp/primitive.c:88 __sctp_connect+0x8cd/0xce0 net/sctp/socket.c:1226 __sctp_setsockopt_connectx+0x133/0x1a0 net/sctp/socket.c:1349 sctp_setsockopt_connectx_old net/sctp/socket.c:1365 [inline] sctp_setsockopt net/sctp/socket.c:4617 [inline] sctp_setsockopt+0x22cc/0x68a0 net/sctp/socket.c:4581 sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:3120 __sys_setsockopt+0x180/0x280 net/socket.c:1923 __do_sys_setsockopt net/socket.c:1934 [inline] __se_sys_setsockopt net/socket.c:1931 [inline] __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1931 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f29 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:00007f08dc343c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000457f29 RDX: 000000000000006b RSI: 0000000000000084 RDI: 0000000000000006 RBP: 000000000073bfa0 R08: 000000000000001c R09: 0000000000000000 R10: 000000002055bfe4 R11: 0000000000000246 R12: 00007f08dc3446d4 R13: 00000000004ccac8 R14: 00000000004da830 R15: 00000000ffffffff Modules linked in: ---[ end trace 7de77d1b835299f5 ]--- RIP: 0010:xfrm_lookup_with_ifid+0xf0/0x1cd0 net/xfrm/xfrm_policy.c:3027 Code: c1 e8 03 42 80 3c 28 00 0f 85 c3 19 00 00 48 8b 85 f0 fe ff ff 4c 8b 68 08 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 01 0f 8e 93 15 00 00 41 0f b7 45 00 4d RSP: 0018:ffff8880ae906d10 EFLAGS: 00010a06 kobject: 'loop1' (000000005d69384c): kobject_uevent_env RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff8880429ecf00 RDX: 10c1072800000000 RSI: ffffffff85ff59da RDI: ffff8880a53d0040 RBP: ffff8880ae906e60 R08: 0000000000000006 R09: 0000000000000000 R10: ffffed1015d25bcf R11: 0000000000000000 R12: ffff8880429ecf00 kobject: 'loop1' (000000005d69384c): fill_kobj_path: path = '/devices/virtual/block/loop1' R13: 8608394000000000 R14: ffff8880a11c769c R15: ffff8880ae906e38 FS: 00007f08dc344700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000a5048d CR3: 000000009d7a7000 CR4: 00000000001406e0 --- 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.