From: syzbot <syzbot+0864346ae616fffdd602@syzkaller.appspotmail.com>
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
Subject: general protection fault in ipcomp_init_state
Date: Mon, 07 Jan 2019 22:41:03 -0800 [thread overview]
Message-ID: <000000000000194b2a057eeca129@google.com> (raw)
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. 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.
reply other threads:[~2019-01-08 6:41 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=000000000000194b2a057eeca129@google.com \
--to=syzbot+0864346ae616fffdd602@syzkaller.appspotmail.com \
--cc=davem@davemloft.net \
--cc=herbert@gondor.apana.org.au \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=steffen.klassert@secunet.com \
--cc=syzkaller-bugs@googlegroups.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.