------------[ cut here ]------------
WARNING: CPU: 1 PID: 9638 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: 9638 Comm: syz-executor.4 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:ffff8881d7507c78 EFLAGS: 00010206
RAX: ffff8881c3c44680 RBX: ffff88819beb8000 RCX: 0000000000000001
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff88814d7877c8
RBP: ffff88814d786e00 R08: ffff88821ffff05c R09: ffff88821ffff048
R10: ffff88821ffff057 R11: ffff88821ffff050 R12: ffff88814d78749a
R13: ffff88814d786e30 R14: 0000000000000000 R15: ffff88814d78760c
 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:queued_spin_lock include/asm-generic/qspinlock.h:88 [inline]
RIP: 0010:do_raw_spin_lock+0xc0/0x1d0 kernel/locking/spinlock_debug.c:113
RSP: 0018:ffff8881a44ffd30 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: ffff8881d6a90ec0 RCX: ffffffff9800f014
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff8881c024e398
RBP: ffff8881c024e398 R08: 0000000000001e21 R09: ffffed1038049c74
R10: ffffed1038049c73 R11: ffff8881c024e39b R12: ffff8881c024e3a8
R13: ffff8881c024e3a0 R14: ffffffff99cfbe00 R15: ffff8881c024e4b8
 spin_lock include/linux/spinlock.h:317 [inline]
 evict+0x37a/0x5f0 fs/inode.c:566
 iput_final fs/inode.c:1516 [inline]
 iput fs/inode.c:1543 [inline]
 iput+0x385/0x7f0 fs/inode.c:1528
 do_unlinkat+0x376/0x5e0 fs/namei.c:4234
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459757
RSP: 002b:00007fffcde672b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000459757
RDX: 00007fffcde672d0 RSI: 00007fffcde672d0 RDI: 00007fffcde67360
RBP: 0000000000002d13 R08: 0000000000000000 R09: 0000000000000011
R10: 000000000000000a R11: 0000000000000246 R12: 00007fffcde683f0
R13: 0000000001af0940 R14: 0000000000000000 R15: 00007fffcde683f0
Kernel Offset: 0x16e00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Rebooting in 86400 seconds..