syzbot

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WARNING: CPU: 0 PID: 3808 at net/core/dev.c:2466 skb_warn_bad_offload+0x2af/0x390 net/core/dev.c:2461
syz0: caps=(0x00000400000058c1, 0x0000000000000000) len=90 data_len=0 gso_size=574 gso_type=5 ip_summed=0
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 3808 Comm: syzkaller611831 Not tainted 4.9.83-ga92bb8d #43
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8a37388 ffffffff81d95149 ffffffff83a480c0 ffff8801d8a37460
 ffffffff83ee3100 ffffffff82f3634f 0000000000000009 ffff8801d8a37450
 ffffffff8142f6c1 0000000041b58ab3 ffffffff8418b1f0 ffffffff8142f505
Call Trace:
 [<ffffffff81d95149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d95149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8142f6c1>] panic+0x1bc/0x3a8 kernel/panic.c:179
 [<ffffffff811311c4>] __warn+0x1c4/0x1e0 kernel/panic.c:542
 [<ffffffff811312a4>] warn_slowpath_fmt+0xc4/0x110 kernel/panic.c:565
 [<ffffffff82f3634f>] skb_warn_bad_offload+0x2af/0x390 net/core/dev.c:2461
 [<ffffffff82f49eeb>] __skb_gso_segment+0x52b/0x670 net/core/dev.c:2767
 [<ffffffff82f4ad8e>] skb_gso_segment include/linux/netdevice.h:4000 [inline]
 [<ffffffff82f4ad8e>] validate_xmit_skb+0x44e/0x980 net/core/dev.c:3003
 [<ffffffff82f4b377>] validate_xmit_skb_list+0xb7/0x120 net/core/dev.c:3052
 [<ffffffff82fe524a>] sch_direct_xmit+0x34a/0x5d0 net/sched/sch_generic.c:177
 [<ffffffff82f4d732>] __dev_xmit_skb net/core/dev.c:3144 [inline]
 [<ffffffff82f4d732>] __dev_queue_xmit+0x17b2/0x20a0 net/core/dev.c:3404
 [<ffffffff82f4e037>] dev_queue_xmit+0x17/0x20 net/core/dev.c:3469
 [<ffffffff8355b61c>] packet_snd net/packet/af_packet.c:2953 [inline]
 [<ffffffff8355b61c>] packet_sendmsg+0x2ccc/0x4760 net/packet/af_packet.c:2978
 [<ffffffff82ed8baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed8baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed9b08>] SYSC_sendto+0x2c8/0x340 net/socket.c:1670
 [<ffffffff82edc010>] SyS_sendto+0x40/0x50 net/socket.c:1638
 [<ffffffff81006504>] do_syscall_64+0x1a4/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b4e7d>] entry_SYSCALL_64_after_swapgs+0x47/0xc5
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..