------------[ cut here ]------------
bridge0: caps=(0x00000801bfdd78c9, 0x0000000000000000) len=14 data_len=0 gso_size=2304 gso_type=7 ip_summed=0
WARNING: CPU: 0 PID: 13990 at net/core/dev.c:2612 skb_warn_bad_offload+0x2c9/0x3d0 net/core/dev.c:2607
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 13990 Comm: syz-executor6 Not tainted 4.15.0+ #286
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1dc/0x200 kernel/panic.c:547
 report_bug+0x211/0x2d0 lib/bug.c:184
 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
 fixup_bug arch/x86/kernel/traps.c:247 [inline]
 do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1097
RIP: 0010:skb_warn_bad_offload+0x2c9/0x3d0 net/core/dev.c:2607
RSP: 0018:ffff8801a0a0f118 EFLAGS: 00010282
RAX: dffffc0000000008 RBX: ffff8801cdf09840 RCX: ffffffff8159e52e
RDX: 0000000000005193 RSI: ffffc9000144b000 RDI: ffff8801a0a0ee20
RBP: ffff8801a0a0f170 R08: ffffffff86b38998 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801cdf09840 R14: ffff8801d46e6860 R15: 0000000000000007
 __skb_gso_segment+0x612/0x800 net/core/dev.c:2819
 skb_gso_segment include/linux/netdevice.h:3993 [inline]
 validate_xmit_skb+0x4ba/0xb30 net/core/dev.c:3069
 __dev_queue_xmit+0x11cc/0x2cf0 net/core/dev.c:3503
 dev_queue_xmit+0x17/0x20 net/core/dev.c:3544
 packet_snd net/packet/af_packet.c:2943 [inline]
 packet_sendmsg+0x3aed/0x60b0 net/packet/af_packet.c:2968
 sock_sendmsg_nosec net/socket.c:638 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:648
 SYSC_sendto+0x361/0x5c0 net/socket.c:1729
 SyS_sendto+0x40/0x50 net/socket.c:1697
 entry_SYSCALL_64_fastpath+0x29/0xa0
RIP: 0033:0x453299
RSP: 002b:00007fc66da69c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fc66da69940 RCX: 0000000000453299
RDX: 0000000000000018 RSI: 00000000207fffe7 RDI: 0000000000000014
RBP: 00007fc66da69930 R08: 0000000020e72000 R09: 0000000000000014
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b7d92
R13: 00007fc66da69ab8 R14: 00000000004b7da2 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..