skbuff: skb_over_panic: text:ffffffff848e88a3 len:213348 put:213008 head:ffff8801d9171d00 data:ffff8801d9171db8 tail:0x3421c end:0x7ec0 dev:<NULL>
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:104!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 18230 Comm: syz-executor2 Not tainted 4.14.0-rc5-next-20171018+ #36
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801cfb902c0 task.stack: ffff8801d2a58000
RIP: 0010:skb_panic+0x15c/0x1f0 net/core/skbuff.c:100
RSP: 0018:ffff8801d2a5e3a8 EFLAGS: 00010286
RAX: 0000000000000092 RBX: ffff8801c2e26e40 RCX: 0000000000000000
RDX: 0000000000000092 RSI: ffffc90001f3d000 RDI: ffffed003a54bc69
RBP: ffff8801d2a5e410 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85584060
R13: ffffffff848e88a3 R14: 0000000000034010 R15: ffffffff855838a0
FS:  00007fe798220700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002001d000 CR3: 00000001d8d6c000 CR4: 00000000001406e0
DR0: 0000000020001000 DR1: 0000000020001000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 skb_over_panic net/core/skbuff.c:109 [inline]
 skb_put+0x181/0x1c0 net/core/skbuff.c:1690
 skb_put_data include/linux/skbuff.h:2044 [inline]
 sctp_packet_pack net/sctp/output.c:472 [inline]
 sctp_packet_transmit+0x1183/0x3750 net/sctp/output.c:605
 sctp_outq_flush+0x1216/0x4050 net/sctp/outqueue.c:1191
 sctp_outq_uncork+0x5a/0x70 net/sctp/outqueue.c:772
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1803 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1203 [inline]
 sctp_do_sm+0x50e/0x6a30 net/sctp/sm_sideeffect.c:1174
 sctp_assoc_bh_rcv+0x283/0x4b0 net/sctp/associola.c:1066
 sctp_inq_push+0x23b/0x300 net/sctp/inqueue.c:95
 sctp_backlog_rcv+0x177/0xaa0 net/sctp/input.c:350
 sk_backlog_rcv include/net/sock.h:909 [inline]
 __release_sock+0x124/0x360 net/core/sock.c:2264
 release_sock+0xa4/0x2a0 net/core/sock.c:2776
 sctp_wait_for_connect+0x346/0x570 net/sctp/socket.c:8095
 sctp_sendmsg+0x29fd/0x32b0 net/sctp/socket.c:2009
 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:763
 sock_sendmsg_nosec net/socket.c:632 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:642
 SYSC_sendto+0x352/0x5a0 net/socket.c:1749
 SyS_sendto+0x40/0x50 net/socket.c:1717
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x452869
RSP: 002b:00007fe79821fbe8 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452869
RDX: 0000000000034000 RSI: 0000000020832000 RDI: 0000000000000015
RBP: 0000000000000082 R08: 00000000205e4fe4 R09: 000000000000001c
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f30e0
R13: 00000000ffffffff R14: 00007fe7982206d4 R15: 0000000000000000
Code: 03 0f b6 04 01 84 c0 74 04 3c 03 7e 20 8b 4b 78 41 57 48 c7 c7 e0 38 58 85 52 56 4c 89 ea 41 50 4c 89 e6 45 89 f0 e8 69 0a 6a fd <0f> 0b 4c 89 4d b8 4c 89 45 c0 48 89 75 c8 48 89 55 d0 e8 6d 56 
RIP: skb_panic+0x15c/0x1f0 net/core/skbuff.c:100 RSP: ffff8801d2a5e3a8
---[ end trace 163497965c00164d ]---