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kernel BUG at net/core/skbuff.c:2208!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 2211 Comm: syz-executor.2 Not tainted 4.4.174+ #17
task: ffff8800b382c740 task.stack: ffff88016c7b8000
RIP: 0010:[<ffffffff821f6ac7>]  [<ffffffff821f6ac7>] skb_copy_and_csum_bits+0x6e7/0x800 net/core/skbuff.c:2208
RSP: 0018:ffff8801db6072f0  EFLAGS: 00010206
RAX: ffff8800b382c740 RBX: 0000000000000000 RCX: 1ffff10030d785f9
RDX: 0000000000000100 RSI: ffffffff821f6ac7 RDI: ffff880186bc2fc8
RBP: ffff8801db607380 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000003c R11: ffff880186e52b5f R12: 000000005890868c
R13: ffff88018be663c0 R14: ffff880186bc2fc0 R15: 000000000000003c
FS:  0000000000000000(0000) GS:ffff8801db600000(0063) knlGS:00000000f54dbb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000203901ff CR3: 00000001ad068000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff88018be66348 ffffffff8244588d ffffffff812582dd ffff880186e528e8
 0000003c8271bb16 ffffffff82719cdc ffffffff810e1744 ffffffff810e181c
 ffff88018be66344 ffffffff825b0203 000001e85890868c ffff88018be66280
Call Trace:
 <IRQ> 
 [<ffffffff82493d6f>] icmp_glue_bits+0x7f/0x1e0 net/ipv4/icmp.c:344
 [<ffffffff823caf41>] __ip_append_data.isra.0+0x1e91/0x2a20 net/ipv4/ip_output.c:1045
 [<ffffffff823cbbbc>] ip_append_data.part.0+0xec/0x160 net/ipv4/ip_output.c:1195
 [<ffffffff823d07a9>] ip_append_data+0x69/0x90 net/ipv4/ip_output.c:1184
 [<ffffffff82493979>] icmp_push_reply+0x199/0x510 net/ipv4/icmp.c:362
 [<ffffffff824950fa>] icmp_send+0xaca/0x1410 net/ipv4/icmp.c:727
 [<ffffffff823cbde4>] ip_fragment net/ipv4/ip_output.c:511 [inline]
 [<ffffffff823cbde4>] ip_fragment.constprop.0+0x1b4/0x200 net/ipv4/ip_output.c:498
 [<ffffffff823cc1e9>] ip_finish_output+0x3b9/0xc60 net/ipv4/ip_output.c:286
 [<ffffffff823d04a7>] NF_HOOK_COND include/linux/netfilter.h:240 [inline]
 [<ffffffff823d04a7>] ip_output+0x227/0x4c0 net/ipv4/ip_output.c:362
 [<ffffffff823cd21c>] dst_output include/net/dst.h:498 [inline]
 [<ffffffff823cd21c>] ip_local_out+0x9c/0x180 net/ipv4/ip_output.c:119
 [<ffffffff823ce58c>] ip_queue_xmit+0x89c/0x1ab0 net/ipv4/ip_output.c:461
 [<ffffffff82431dd4>] __tcp_transmit_skb+0x1904/0x2cf0 net/ipv4/tcp_output.c:1034
 [<ffffffff8243c54a>] tcp_transmit_skb net/ipv4/tcp_output.c:1047 [inline]
 [<ffffffff8243c54a>] __tcp_retransmit_skb+0x5ea/0x1710 net/ipv4/tcp_output.c:2665
 [<ffffffff8243de33>] tcp_retransmit_skb+0x23/0x2c0 net/ipv4/tcp_output.c:2682
 [<ffffffff8244394e>] tcp_retransmit_timer net/ipv4/tcp_timer.c:461 [inline]
 [<ffffffff8244394e>] tcp_retransmit_timer+0x7ee/0x1f70 net/ipv4/tcp_timer.c:379
 [<ffffffff8244548c>] tcp_write_timer_handler+0x3bc/0x700 net/ipv4/tcp_timer.c:543
 [<ffffffff8244588d>] tcp_write_timer+0xbd/0xd0 net/ipv4/tcp_timer.c:561
 [<ffffffff812582dd>] call_timer_fn+0x18d/0x850 kernel/time/timer.c:1185
 [<ffffffff81258ebf>] __run_timers kernel/time/timer.c:1261 [inline]
 [<ffffffff81258ebf>] run_timer_softirq+0x51f/0xb70 kernel/time/timer.c:1444
 [<ffffffff8271bb16>] __do_softirq+0x226/0xa3f kernel/softirq.c:273
 [<ffffffff82719cdc>] do_softirq_own_stack+0x1c/0x30 arch/x86/entry/entry_64.S:956
 <EOI> 
 [<ffffffff810e1744>] do_softirq.part.0+0x54/0x60 kernel/softirq.c:317
 [<ffffffff810e181c>] do_softirq kernel/softirq.c:309 [inline]
 [<ffffffff810e181c>] __local_bh_enable_ip+0xcc/0xe0 kernel/softirq.c:170
 [<ffffffff8259f8bf>] local_bh_enable include/linux/bottom_half.h:31 [inline]
 [<ffffffff8259f8bf>] rcu_read_unlock_bh include/linux/rcupdate.h:957 [inline]
 [<ffffffff8259f8bf>] ip6_finish_output2+0xa0f/0x1dc0 net/ipv6/ip6_output.c:114
 [<ffffffff825b0203>] ip6_finish_output+0x2f3/0x750 net/ipv6/ip6_output.c:131
 [<ffffffff825b0814>] NF_HOOK_COND include/linux/netfilter.h:240 [inline]
 [<ffffffff825b0814>] ip6_output+0x1b4/0x520 net/ipv6/ip6_output.c:145
 [<ffffffff826bf66c>] dst_output include/net/dst.h:498 [inline]
 [<ffffffff826bf66c>] ip6_local_out+0x9c/0x180 net/ipv6/output_core.c:169
 [<ffffffff825b28c2>] ip6_send_skb+0xa2/0x340 net/ipv6/ip6_output.c:1725
 [<ffffffff82611618>] udp_v6_send_skb+0x438/0xe90 net/ipv6/udp.c:1066
 [<ffffffff826142ed>] udpv6_sendmsg+0x1e3d/0x24f0 net/ipv6/udp.c:1330
 [<ffffffff824a8b42>] inet_sendmsg+0x202/0x4d0 net/ipv4/af_inet.c:755
 [<ffffffff821d838e>] sock_sendmsg_nosec net/socket.c:638 [inline]
 [<ffffffff821d838e>] sock_sendmsg+0xbe/0x110 net/socket.c:648
 [<ffffffff821d9e69>] ___sys_sendmsg+0x369/0x890 net/socket.c:1975
 [<ffffffff821dd386>] __sys_sendmmsg+0x1d6/0x2e0 net/socket.c:2053
 [<ffffffff822ace22>] C_SYSC_sendmmsg net/compat.c:731 [inline]
 [<ffffffff822ace22>] compat_SyS_sendmmsg+0x32/0x40 net/compat.c:728
 [<ffffffff8100603d>] do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline]
 [<ffffffff8100603d>] do_fast_syscall_32+0x32d/0xa90 arch/x86/entry/common.c:397
 [<ffffffff8271a350>] sysenter_flags_fixed+0xd/0x1a
Code: ff ff e8 4d 2b 11 ff be 8e 08 00 00 48 c7 c7 e0 25 a5 82 e8 cc cf ed fe e9 48 fe ff ff 44 8b 7d d4 e9 c4 fd ff ff e8 29 2b 11 ff <0f> 0b 4c 89 f7 e8 8f e3 28 ff e9 b2 fa ff ff 48 89 55 b8 e8 c1 
RIP  [<ffffffff821f6ac7>] skb_copy_and_csum_bits+0x6e7/0x800 net/core/skbuff.c:2208
 RSP <ffff8801db6072f0>
---[ end trace 50b042d57978bf7f ]---