------------[ cut here ]------------
kernel BUG at net/ipv4/tcp_output.c:2837!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 4277 Comm: syz-executor0 Not tainted 4.16.0-rc6+ #280
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__tcp_retransmit_skb+0x2728/0x2af0 net/ipv4/tcp_output.c:2837
RSP: 0018:ffff8801db207000 EFLAGS: 00010206
RAX: ffff8801c9368640 RBX: 0000000090ed4faa RCX: ffffffff84cbbe28
RDX: 0000000000000100 RSI: ffff8801b160d738 RDI: ffff8801d2ff0cac
RBP: ffff8801db2073a8 R08: ffff88021fff801c R09: 0000000000000000
R10: 00000000b80185d1 R11: ffff88021fff801d R12: 0000000000000001
R13: ffff8801d2ff0d0e R14: ffff8801d2ff0c80 R15: ffff8801b160d500
FS:  00000000013b7940(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000093002d CR3: 00000001d7b82005 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 tcp_retransmit_skb+0x2e/0x230 net/ipv4/tcp_output.c:2923
 tcp_retransmit_timer+0xefc/0x2dd0 net/ipv4/tcp_timer.c:488
 tcp_write_timer_handler+0x335/0x820 net/ipv4/tcp_timer.c:573
 tcp_write_timer+0x153/0x170 net/ipv4/tcp_timer.c:593
 call_timer_fn+0x228/0x820 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7ee/0xb70 kernel/time/timer.c:1666
 run_timer_softirq+0x4c/0x70 kernel/time/timer.c:1692
 __do_softirq+0x2d7/0xb85 kernel/softirq.c:285
 invoke_softirq kernel/softirq.c:365 [inline]
 irq_exit+0x1cc/0x200 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:541 [inline]
 smp_apic_timer_interrupt+0x16b/0x700 arch/x86/kernel/apic/apic.c:1052
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:857
 </IRQ>
RIP: 0010:pte_val arch/x86/include/asm/paravirt.h:384 [inline]
RIP: 0010:pte_pfn arch/x86/include/asm/pgtable.h:190 [inline]
RIP: 0010:_vm_normal_page+0x63/0x200 mm/memory.c:828
RSP: 0018:ffff8801af2d6c88 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff12
RAX: dffffc0000000000 RBX: 80000001cb93d007 RCX: ffffffff819cf442
RDX: 1ffffffff0da60a6 RSI: 00007feb37e9d000 RDI: ffffffff86d30530
RBP: ffff8801af2d6cb0 R08: ffffea00072e4f00 R09: 0000000000000004
R10: ffff8801af2d6b78 R11: 0000000000000003 R12: ffff8801abca7630
R13: 00007feb37e9d000 R14: ffff8801af2d6c88 R15: ffff8801d7a314e8
 copy_one_pte mm/memory.c:1037 [inline]
 copy_pte_range mm/memory.c:1101 [inline]
 copy_pmd_range mm/memory.c:1152 [inline]
 copy_pud_range mm/memory.c:1186 [inline]
 copy_p4d_range mm/memory.c:1208 [inline]
 copy_page_range+0xe76/0x27a0 mm/memory.c:1270
 dup_mmap kernel/fork.c:513 [inline]
 dup_mm kernel/fork.c:1233 [inline]
 copy_mm+0xd68/0x131f kernel/fork.c:1287
 copy_process.part.38+0x1f56/0x4b60 kernel/fork.c:1793
 copy_process kernel/fork.c:1606 [inline]
 _do_fork+0x1f7/0xf70 kernel/fork.c:2087
 SYSC_clone kernel/fork.c:2194 [inline]
 SyS_clone+0x37/0x50 kernel/fork.c:2188
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x452f4a
RSP: 002b:0000000000a3eb30 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000a3eb30 RCX: 0000000000452f4a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000a3eb70 R08: 0000000000000001 R09: 00000000013b7940
R10: 00000000013b7c10 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000001380
Code: 14 de fc e9 86 f4 ff ff e8 46 14 de fc e9 81 f9 ff ff e8 3c 14 de fc e9 fd fc ff ff e8 12 14 de fc e9 02 f5 ff ff e8 e8 61 a5 fc <0f> 0b 48 8b bd c0 fc ff ff e8 ba 13 de fc e9 76 e9 ff ff 4c 89 
RIP: __tcp_retransmit_skb+0x2728/0x2af0 net/ipv4/tcp_output.c:2837 RSP: ffff8801db207000
---[ end trace a7c249b9d67b0b68 ]---