------------[ cut here ]------------
skb_assert_len
WARNING: ./include/linux/skbuff.h:2753 at skb_assert_len include/linux/skbuff.h:2753 [inline], CPU#0: syz.5.5968/24321
WARNING: ./include/linux/skbuff.h:2753 at __dev_queue_xmit+0x1fba/0x3880 net/core/dev.c:4785, CPU#0: syz.5.5968/24321
Modules linked in:
CPU: 0 UID: 0 PID: 24321 Comm: syz.5.5968 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:skb_assert_len include/linux/skbuff.h:2753 [inline]
RIP: 0010:__dev_queue_xmit+0x1fc1/0x3880 net/core/dev.c:4785
Code: b5 02 00 48 89 c3 45 31 ff e9 62 fe ff ff e8 46 6d a0 f8 90 0f 0b 90 e9 d3 e1 ff ff 48 8d 3d 76 a6 b9 06 48 c7 c6 9c c3 b8 8d <67> 48 0f b9 3a 80 3d e4 33 95 06 01 0f 85 6f 03 00 00 e8 18 6d a0
RSP: 0018:ffffc90005b5f660 EFLAGS: 00010246
RAX: ffffffff8925189f RBX: ffff88802959fe90 RCX: ffff88803698be80
RDX: 0000000000000002 RSI: ffffffff8db8c39c RDI: ffffffff8fdedcf0
RBP: ffffc90005b5f910 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1004e09171 R12: dffffc0000000000
R13: 1ffff92000b6beec R14: 0000000000000000 R15: ffff88802959fe90
FS:  00007f884fbd66c0(0000) GS:ffff8881259f2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f884fbb4ff8 CR3: 000000006396c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 tpacket_snd net/packet/af_packet.c:2886 [inline]
 packet_sendmsg+0x2a78/0x5060 net/packet/af_packet.c:3112
 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:810
 __sock_sendmsg net/socket.c:825 [inline]
 __sys_sendto+0x41e/0x5d0 net/socket.c:2292
 __do_sys_sendto net/socket.c:2299 [inline]
 __se_sys_sendto net/socket.c:2295 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2295
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x17b/0x530 arch/x86/entry/syscall_64.c:85
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f885197e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f884fbd6028 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f8851c05fa0 RCX: 00007f885197e0d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f8851a15024 R08: 0000200000000000 R09: 0000000000000014
R10: 0000000004000010 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8851c06038 R14: 00007f8851c05fa0 R15: 00007fffe31d7b78
 </TASK>
----------------
Code disassembly (best guess):
   0:	b5 02                	mov    $0x2,%ch
   2:	00 48 89             	add    %cl,-0x77(%rax)
   5:	c3                   	ret
   6:	45 31 ff             	xor    %r15d,%r15d
   9:	e9 62 fe ff ff       	jmp    0xfffffe70
   e:	e8 46 6d a0 f8       	call   0xf8a06d59
  13:	90                   	nop
  14:	0f 0b                	ud2
  16:	90                   	nop
  17:	e9 d3 e1 ff ff       	jmp    0xffffe1ef
  1c:	48 8d 3d 76 a6 b9 06 	lea    0x6b9a676(%rip),%rdi        # 0x6b9a699
  23:	48 c7 c6 9c c3 b8 8d 	mov    $0xffffffff8db8c39c,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	80 3d e4 33 95 06 01 	cmpb   $0x1,0x69533e4(%rip)        # 0x695341a
  36:	0f 85 6f 03 00 00    	jne    0x3ab
  3c:	e8                   	.byte 0xe8
  3d:	18 6d a0             	sbb    %ch,-0x60(%rbp)