device syz0 entered promiscuous mode
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3324 at net/core/dev.c:2449 skb_warn_bad_offload+0x2af/0x390 net/core/dev.c:2444()
syz0: caps=(0x00000080000048c1, 0x0000000000000000) len=28 data_len=0 gso_size=63464 gso_type=13 ip_summed=0
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 3324 Comm: syzkaller497950 Not tainted 4.4.111-gf851888 #16
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 2e5afa97b44b3c89 ffff8801d1cdf3b0 ffffffff81d0507d
 ffffffff83842f60 ffff8801d1cdf488 ffffffff83ca9e60 0000000000000009
 0000000000000991 ffff8801d1cdf478 ffffffff81419a3a 0000000041b58ab3
Call Trace:
 [<ffffffff81d0507d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0507d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81419a3a>] panic+0x1aa/0x388 kernel/panic.c:112
 [<ffffffff8112d7c5>] warn_slowpath_common+0x125/0x140 kernel/panic.c:455
 [<ffffffff8112d8a1>] warn_slowpath_fmt+0xc1/0x110 kernel/panic.c:471
 [<ffffffff82e46f9f>] skb_warn_bad_offload+0x2af/0x390 net/core/dev.c:2444
 [<ffffffff82e57a63>] __skb_gso_segment+0x3b3/0x4a0 net/core/dev.c:2602
 [<ffffffff82e5863e>] skb_gso_segment include/linux/netdevice.h:3705 [inline]
 [<ffffffff82e5863e>] validate_xmit_skb.isra.100.part.101+0x44e/0x970 net/core/dev.c:2810
 [<ffffffff82e58c0e>] validate_xmit_skb net/core/dev.c:2856 [inline]
 [<ffffffff82e58c0e>] validate_xmit_skb_list+0xae/0x110 net/core/dev.c:2858
 [<ffffffff82ee158f>] sch_direct_xmit+0x34f/0x760 net/sched/sch_generic.c:160
 [<ffffffff82e5b508>] __dev_xmit_skb net/core/dev.c:2939 [inline]
 [<ffffffff82e5b508>] __dev_queue_xmit+0x1368/0x1a70 net/core/dev.c:3157
 [<ffffffff82e5bc27>] dev_queue_xmit+0x17/0x20 net/core/dev.c:3223
 [<ffffffff83434672>] packet_snd net/packet/af_packet.c:2828 [inline]
 [<ffffffff83434672>] packet_sendmsg+0x29b2/0x47e0 net/packet/af_packet.c:2853
 [<ffffffff82ded96a>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82ded96a>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82dedbd6>] sock_write_iter+0x226/0x3b0 net/socket.c:834
 [<ffffffff8151c9fc>] new_sync_write fs/read_write.c:478 [inline]
 [<ffffffff8151c9fc>] __vfs_write+0x33c/0x450 fs/read_write.c:491
 [<ffffffff8151e62a>] vfs_write+0x18a/0x530 fs/read_write.c:538
 [<ffffffff81520d19>] SYSC_write fs/read_write.c:585 [inline]
 [<ffffffff81520d19>] SyS_write+0xd9/0x1b0 fs/read_write.c:577
 [<ffffffff81006d84>] do_syscall_32_irqs_on arch/x86/entry/common.c:390 [inline]
 [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890 arch/x86/entry/common.c:457
 [<ffffffff837771ea>] sysenter_flags_fixed+0xd/0x17
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..