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kernel BUG at net/core/skbuff.c:2253!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 6963 Comm: syz-executor.4 Not tainted 4.9.141+ #1
task: ffff8801da7c2f80 task.stack: ffff88017dd10000
RIP: 0010:[<ffffffff822c1dea>]  [<ffffffff822c1dea>] skb_copy_and_csum_bits+0x67a/0x7d0 net/core/skbuff.c:2253
RSP: 0018:ffff8801db707230  EFLAGS: 00010206
RAX: ffff8801da7c2f80 RBX: 0000000071fb5a37 RCX: 1ffff10038e0a5f9
RDX: 0000000000000100 RSI: ffffffff822c1dea RDI: ffff8801c7052fc8
RBP: ffff8801db7072b8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000003c R11: ffff8801ca8294df R12: 0000000000000000
R13: 0000000000000224 R14: 000000000000003c R15: ffff8801c7052fc0
FS:  0000000000000000(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2db25000 CR3: 000000000301e000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff822aa650 ffff8801d8125848 ffffffff8281cb9e ffffffff810efdbc
 ffffffff8281b771 ffff8801ca829268 0000003c81499844 ffff8801d8125844
 ffffffff0000003c 0000000071fb5a37 0000003c000001e8 ffff8801d8125780
Call Trace:
 [<ffffffff8258068f>] icmp_glue_bits+0x7f/0x1d0 net/ipv4/icmp.c:344
 [<ffffffff824b1dd7>] __ip_append_data.isra.2+0x1dd7/0x2930 net/ipv4/ip_output.c:1081
 [<ffffffff824b2a14>] ip_append_data.part.4+0xe4/0x150 net/ipv4/ip_output.c:1231
 [<ffffffff824b78b8>] ip_append_data+0x68/0x80 net/ipv4/ip_output.c:1220
 [<ffffffff8258029e>] icmp_push_reply+0x19e/0x510 net/ipv4/icmp.c:362
 [<ffffffff82581993>] icmp_send+0xac3/0x1430 net/ipv4/icmp.c:727
 [<ffffffff824b2c2c>] ip_fragment.constprop.5+0x1ac/0x200 net/ipv4/ip_output.c:550
 [<ffffffff824b343b>] ip_finish_output+0x7bb/0xc90 net/ipv4/ip_output.c:311
 [<ffffffff824b74cd>] NF_HOOK_COND include/linux/netfilter.h:246 [inline]
 [<ffffffff824b74cd>] ip_output+0x1cd/0x550 net/ipv4/ip_output.c:401
 [<ffffffff824b421b>] dst_output include/net/dst.h:507 [inline]
 [<ffffffff824b421b>] ip_local_out+0x9b/0x180 net/ipv4/ip_output.c:124
 [<ffffffff824b5617>] ip_queue_xmit+0x897/0x18c0 net/ipv4/ip_output.c:500
 [<ffffffff82519ebb>] __tcp_transmit_skb+0x18bb/0x2df0 net/ipv4/tcp_output.c:1041
 [<ffffffff82523f47>] tcp_transmit_skb net/ipv4/tcp_output.c:1057 [inline]
 [<ffffffff82523f47>] __tcp_retransmit_skb+0x587/0x1de0 net/ipv4/tcp_output.c:2763
 [<ffffffff82525fb9>] tcp_retransmit_skb+0x29/0x2a0 net/ipv4/tcp_output.c:2782
 [<ffffffff8252c8ba>] tcp_retransmit_timer+0x92a/0x2290 net/ipv4/tcp_timer.c:507
 [<ffffffff8252e411>] tcp_write_timer_handler+0x1f1/0x790 net/ipv4/tcp_timer.c:591
 [<ffffffff8252ea72>] tcp_write_timer+0xc2/0x180 net/ipv4/tcp_timer.c:609
 [<ffffffff81262a43>] call_timer_fn+0x163/0x6e0 kernel/time/timer.c:1319
 [<ffffffff812631f4>] expire_timers+0x234/0x580 kernel/time/timer.c:1359
 [<ffffffff81263748>] __run_timers kernel/time/timer.c:1674 [inline]
 [<ffffffff81263748>] run_timer_softirq+0x208/0x5e0 kernel/time/timer.c:1687
 [<ffffffff8281cb9e>] __do_softirq+0x20e/0x964 kernel/softirq.c:288
 [<ffffffff810efdbc>] invoke_softirq kernel/softirq.c:368 [inline]
 [<ffffffff810efdbc>] irq_exit+0x11c/0x150 kernel/softirq.c:409
 [<ffffffff8281b771>] exiting_irq arch/x86/include/asm/apic.h:669 [inline]
 [<ffffffff8281b771>] smp_apic_timer_interrupt+0x81/0xb0 arch/x86/kernel/apic/apic.c:962
 [<ffffffff8281902d>] apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:648
 <EOI> [  146.175958]  [<ffffffff81499844>] ? pte_flags arch/x86/include/asm/pgtable_types.h:392 [inline]
 <EOI> [  146.175958]  [<ffffffff81499844>] ? pte_dirty arch/x86/include/asm/pgtable.h:111 [inline]
 <EOI> [  146.175958]  [<ffffffff81499844>] ? zap_pte_range mm/memory.c:1147 [inline]
 <EOI> [  146.175958]  [<ffffffff81499844>] ? zap_pmd_range mm/memory.c:1249 [inline]
 <EOI> [  146.175958]  [<ffffffff81499844>] ? zap_pud_range mm/memory.c:1270 [inline]
 <EOI> [  146.175958]  [<ffffffff81499844>] ? unmap_page_range+0xb94/0x1680 mm/memory.c:1291
 [<ffffffff81499844>] pte_flags arch/x86/include/asm/pgtable_types.h:392 [inline]
 [<ffffffff81499844>] pte_dirty arch/x86/include/asm/pgtable.h:111 [inline]
 [<ffffffff81499844>] zap_pte_range mm/memory.c:1147 [inline]
 [<ffffffff81499844>] zap_pmd_range mm/memory.c:1249 [inline]
 [<ffffffff81499844>] zap_pud_range mm/memory.c:1270 [inline]
 [<ffffffff81499844>] unmap_page_range+0xb94/0x1680 mm/memory.c:1291
 [<ffffffff8149a44c>] unmap_single_vma+0x11c/0x170 mm/memory.c:1336
 [<ffffffff8149ab51>] unmap_vmas+0x81/0xd0 mm/memory.c:1366
 [<ffffffff814b0c2c>] exit_mmap+0x1cc/0x3a0 mm/mmap.c:3021
 [<ffffffff810d265d>] __mmput kernel/fork.c:884 [inline]
 [<ffffffff810d265d>] mmput+0xcd/0x360 kernel/fork.c:906
 [<ffffffff810e6b89>] exit_mm kernel/exit.c:514 [inline]
 [<ffffffff810e6b89>] do_exit+0x6c9/0x2a50 kernel/exit.c:820
 [<ffffffff810ed3a1>] do_group_exit+0x111/0x300 kernel/exit.c:937
 [<ffffffff8110eb61>] get_signal+0x4e1/0x1460 kernel/signal.c:2321
 [<ffffffff81052aa5>] do_signal+0x95/0x1b00 arch/x86/kernel/signal.c:807
 [<ffffffff81003e2e>] exit_to_usermode_loop+0x10e/0x150 arch/x86/entry/common.c:158
 [<ffffffff81005932>] prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
 [<ffffffff81005932>] syscall_return_slowpath arch/x86/entry/common.c:263 [inline]
 [<ffffffff81005932>] do_syscall_64+0x3e2/0x550 arch/x86/entry/common.c:290
 [<ffffffff82817893>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 00 00 4d 8b 24 24 44 8b 6d d0 4d 85 e4 0f 85 30 ff ff ff 8b 5d c0 e8 86 9c 05 ff 8b 45 c8 85 c0 0f 84 98 fe ff ff e8 76 9c 05 ff <0f> 0b 8b 5d c0 e9 89 fe ff ff c7 45 ac 00 00 00 00 e9 9d fa ff 
RIP  [<ffffffff822c1dea>] skb_copy_and_csum_bits+0x67a/0x7d0 net/core/skbuff.c:2253
 RSP <ffff8801db707230>
---[ end trace de6b56fa0f19e498 ]---