device syz0 entered promiscuous mode
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3324 at net/core/dev.c:2466 skb_warn_bad_offload+0x2af/0x390 net/core/dev.c:2461
syz0: caps=(0x00000400000058c1, 0x0000000000000000) len=28 data_len=0 gso_size=8 gso_type=5 ip_summed=0
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 3324 Comm: syzkaller302466 Not tainted 4.9.76-g9154940 #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c8a47308 ffffffff81d93149 ffffffff83a47180 ffff8801c8a473e0
 ffffffff83ee1e00 ffffffff82f3331f 0000000000000009 ffff8801c8a473d0
 ffffffff8142e371 0000000041b58ab3 ffffffff84189678 ffffffff8142e1b5
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8142e371>] panic+0x1bc/0x3a8 kernel/panic.c:179
 [<ffffffff811300f4>] __warn+0x1c4/0x1e0 kernel/panic.c:542
 [<ffffffff811301d4>] warn_slowpath_fmt+0xc4/0x110 kernel/panic.c:565
 [<ffffffff82f3331f>] skb_warn_bad_offload+0x2af/0x390 net/core/dev.c:2461
 [<ffffffff82f46ebb>] __skb_gso_segment+0x52b/0x670 net/core/dev.c:2767
 [<ffffffff82f47d5e>] skb_gso_segment include/linux/netdevice.h:4000 [inline]
 [<ffffffff82f47d5e>] validate_xmit_skb+0x44e/0x980 net/core/dev.c:3003
 [<ffffffff82f48347>] validate_xmit_skb_list+0xb7/0x120 net/core/dev.c:3052
 [<ffffffff82fe1fca>] sch_direct_xmit+0x34a/0x5d0 net/sched/sch_generic.c:177
 [<ffffffff82f4a54d>] __dev_xmit_skb net/core/dev.c:3133 [inline]
 [<ffffffff82f4a54d>] __dev_queue_xmit+0x15fd/0x1e60 net/core/dev.c:3393
 [<ffffffff810002b8>] ? 0xffffffff810002b8
 [<ffffffff82f4adc7>] dev_queue_xmit+0x17/0x20 net/core/dev.c:3458
 [<ffffffff835571dc>] packet_snd net/packet/af_packet.c:2953 [inline]
 [<ffffffff835571dc>] packet_sendmsg+0x2ccc/0x4760 net/packet/af_packet.c:2978
 [<ffffffff82ed5baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed5baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed5e16>] sock_write_iter+0x226/0x3b0 net/socket.c:843
 [<ffffffff8156d1ef>] new_sync_write fs/read_write.c:499 [inline]
 [<ffffffff8156d1ef>] __vfs_write+0x4bf/0x680 fs/read_write.c:512
 [<ffffffff8156eb19>] vfs_write+0x189/0x530 fs/read_write.c:560
 [<ffffffff81572609>] SYSC_write fs/read_write.c:607 [inline]
 [<ffffffff81572609>] SyS_write+0xd9/0x1b0 fs/read_write.c:599
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838b2334>] entry_SYSENTER_compat+0x74/0x83 arch/x86/entry/entry_64_compat.S:127
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..