------------[ cut here ]------------
WARNING: CPU: 1 PID: 1861 at net/ipv4/tcp_timer.c:429 tcp_retransmit_timer+0x1a66/0x2590 net/ipv4/tcp_timer.c:429
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 1861 Comm: syz-executor.5 Not tainted 4.14.145+ #0
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xca/0x134 lib/dump_stack.c:53
 panic+0x1ea/0x3d3 kernel/panic.c:182
 __warn.cold+0x2f/0x3a kernel/panic.c:546
 report_bug+0x20a/0x248 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bf/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x18/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:tcp_retransmit_timer+0x1a66/0x2590 net/ipv4/tcp_timer.c:429
RSP: 0018:ffff8881dbb07c78 EFLAGS: 00010206
RAX: ffff8881cfba9780 RBX: ffff8881a2838000 RCX: 0000000000000001
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff88813e37e1c8
RBP: ffff88813e37d800 R08: ffff88821fffd05c R09: ffff88821fffd048
R10: ffff88821fffd057 R11: ffff88821fffd050 R12: ffff88813e37de9a
R13: ffff88813e37d830 R14: 0000000000000000 R15: ffff88813e37e00c
 tcp_write_timer_handler+0x43d/0x780 net/ipv4/tcp_timer.c:579
 tcp_write_timer+0xc9/0x170 net/ipv4/tcp_timer.c:597
 call_timer_fn+0x15b/0x6a0 kernel/time/timer.c:1279
 expire_timers+0x227/0x4c0 kernel/time/timer.c:1318
 __run_timers kernel/time/timer.c:1634 [inline]
 run_timer_softirq+0x1eb/0x5d0 kernel/time/timer.c:1647
 __do_softirq+0x234/0x9ec kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x114/0x150 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 smp_apic_timer_interrupt+0x1a7/0x650 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:792
 </IRQ>
RIP: 0010:wait_consider_task+0x293/0x3150 kernel/exit.c:1372
RSP: 0018:ffff8881a2e3fad0 EFLAGS: 00000283 ORIG_RAX: ffffffffffffff10
RAX: ffff8881cfba9780 RBX: 0000000000000000 RCX: ffff88819e070484
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881a2e3fcd8
RBP: 0000000000000000 R08: 00000000000043a2 R09: fffffbfff4601219
R10: fffffbfff4601218 R11: ffffffffa30090c3 R12: ffff8881a2e3fcdc
R13: 0000000040000005 R14: ffff8881a2e3fcd8 R15: ffff88819e070000
 do_wait_thread kernel/exit.c:1461 [inline]
 do_wait+0x43a/0x950 kernel/exit.c:1532
 kernel_wait4+0x116/0x210 kernel/exit.c:1675
 SYSC_wait4 kernel/exit.c:1687 [inline]
 SyS_wait4+0x130/0x140 kernel/exit.c:1683
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x41399a
RSP: 002b:00007ffc9716b228 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 00000000001b3db0 RCX: 000000000041399a
RDX: 0000000040000001 RSI: 00007ffc9716b260 RDI: ffffffffffffffff
RBP: 000000000000250d R08: 0000000000000001 R09: 0000000000c5a940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006
R13: 00007ffc9716b260 R14: 00000000001b3d54 R15: 00007ffc9716b270
Shutting down cpus with NMI
Kernel Offset: 0x1fc00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Rebooting in 86400 seconds..