skbuff: skb_over_panic: text:ffffffff832140e0 len:64940 put:64940 head:ffff88009bfa8f00 data:ffff88009bfa8f90 tail:0xfe3c end:0xc0 dev:<NULL>
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:104!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 23740 Comm: syz-executor5 Not tainted 4.4.138-g226f96b #63
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800b6ed8000 task.stack: ffff88009b748000
RIP: 0010:[<ffffffff83895f6c>]  [<ffffffff83895f6c>] skb_panic+0x166/0x168 net/core/skbuff.c:100
RSP: 0018:ffff88009b74f408  EFLAGS: 00010286
RAX: 000000000000008d RBX: ffff8801d839b000 RCX: ffffc900060d2000
RDX: 0000000000000000 RSI: ffffffff8125d249 RDI: ffff8800b6ed88dc
RBP: ffff88009b74f470 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff83ec4460
R13: ffff88009bfa8f90 R14: 000000000000fe3c R15: 00000000000000c0
FS:  00007f0f512e8700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5570dfc000 CR3: 00000001d0b8f000 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff88009bfa8f90 000000000000fe3c 00000000000000c0 ffffffff83ec4460
 0000000000000000 ffffffff83ec4960 ffffffff832140e0 0000fdac00000001
 ffff8801d839b000 ffffffff832140e0 ffff88009bfa8f90 000000000000fdac
Call Trace:
 [<ffffffff83895fb4>] skb_over_panic net/core/skbuff.c:109 [inline]
 [<ffffffff83895fb4>] skb_put.cold.72+0x23/0x23 net/core/skbuff.c:1362
 [<ffffffff832140e0>] __ip_append_data.isra.45+0x1d40/0x2a70 net/ipv4/ip_output.c:1026
 [<ffffffff83214ef4>] ip_append_data.part.47+0xe4/0x150 net/ipv4/ip_output.c:1193
 [<ffffffff8321d448>] ip_append_data+0x68/0x80 net/ipv4/ip_output.c:1182
 [<ffffffff832d074a>] udp_sendmsg+0xc5a/0x1c70 net/ipv4/udp.c:1098
 [<ffffffff834963ed>] udpv6_sendmsg+0x12cd/0x24c0 net/ipv6/udp.c:1173
 [<ffffffff83300dd3>] inet_sendmsg+0x203/0x4d0 net/ipv4/af_inet.c:755
 [<ffffffff82f1e22c>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82f1e22c>] sock_sendmsg+0xcc/0x110 net/socket.c:635
 [<ffffffff82f1ef0c>] SYSC_sendto+0x21c/0x370 net/socket.c:1665
 [<ffffffff82f21590>] SyS_sendto+0x40/0x50 net/socket.c:1633
 [<ffffffff838c2725>] entry_SYSCALL_64_fastpath+0x22/0x9e
Code: ab 38 c6 fd 4c 8b 4d b8 8b 4b 78 41 54 48 c7 c7 a0 44 ec 83 44 8b 45 d4 41 57 48 8b 55 c8 41 56 48 8b 75 c0 41 55 e8 0d f3 b7 fd <0f> 0b e8 3d b5 ab fd 4c 8b 65 08 e8 54 22 c6 fd 48 c7 c1 20 49 
RIP  [<ffffffff83895f6c>] skb_panic+0x166/0x168 net/core/skbuff.c:100
 RSP <ffff88009b74f408>
---[ end trace 632e672dd7aa1dc2 ]---