invalid inflight: 1 state 4 cwnd 10 mss 1428
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7696 at net/ipv4/tcp_output.c:2507 tcp_send_loss_probe.cold+0x83/0xa2 net/ipv4/tcp_output.c:2507
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 7696 Comm: syz-executor.0 Not tainted 4.14.144 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x197 lib/dump_stack.c:53
 panic+0x1f2/0x426 kernel/panic.c:182
 __warn.cold+0x2f/0x36 kernel/panic.c:546
 report_bug+0x216/0x254 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+0x1bb/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:tcp_send_loss_probe.cold+0x83/0xa2 net/ipv4/tcp_output.c:2507
RSP: 0018:ffff8880aee07cb8 EFLAGS: 00010282
RAX: 000000000000002c RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff866d10e0 RDI: ffffed1015dc0f8d
RBP: ffff8880aee07ce8 R08: 000000000000002c R09: ffff888088678c58
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888089042000
R13: 0000000000000001 R14: 0000000000000594 R15: 000000000000000a
 tcp_write_timer_handler+0x4a8/0x7e0 net/ipv4/tcp_timer.c:575
kobject: 'loop1' (ffff8880a49086e0): kobject_uevent_env
 tcp_write_timer+0xd8/0x180 net/ipv4/tcp_timer.c:597
 call_timer_fn+0x161/0x670 kernel/time/timer.c:1279
 expire_timers kernel/time/timer.c:1318 [inline]
 __run_timers kernel/time/timer.c:1634 [inline]
 __run_timers kernel/time/timer.c:1602 [inline]
 run_timer_softirq+0x5b4/0x1570 kernel/time/timer.c:1647
 __do_softirq+0x244/0x9a0 kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x160/0x1b0 kernel/softirq.c:409
kobject: 'loop1' (ffff8880a49086e0): fill_kobj_path: path = '/devices/virtual/block/loop1'
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
 </IRQ>
RIP: 0010:__write_once_size include/linux/compiler.h:210 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4e/0x60 kernel/kcov.c:90
RSP: 0018:ffff88808ae9f3d8 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff10
RAX: 0000000000040000 RBX: ffff888081cfa5be RCX: ffffc90006c34000
RDX: 0000000000005fdd RSI: ffffffff81959701 RDI: ffff888081cfb2a9
RBP: ffff88808ae9f3d8 R08: ffff888088678340 R09: 0000000000000002
R10: ffffed101039f4b7 R11: 0000000000000000 R12: ffff888081cfb2a9
R13: 000000000000002f R14: ffff888081cfb2aa R15: dffffc0000000000
 mangle_path+0x151/0x230 fs/seq_file.c:437
 seq_path+0x13c/0x280 fs/seq_file.c:470
 seq_file_path+0x26/0x30 fs/seq_file.c:491
 show_map_vma.isra.0+0x4ff/0x670 fs/proc/task_mmu.c:329
 show_map fs/proc/task_mmu.c:366 [inline]
 show_pid_map+0x1f/0x90 fs/proc/task_mmu.c:373
 seq_read+0xb46/0x1280 fs/seq_file.c:272
 do_loop_readv_writev fs/read_write.c:695 [inline]
 do_loop_readv_writev fs/read_write.c:682 [inline]
 do_iter_read+0x3e2/0x5b0 fs/read_write.c:919
 vfs_readv+0xd3/0x130 fs/read_write.c:981
 kernel_readv fs/splice.c:361 [inline]
 default_file_splice_read+0x421/0x7b0 fs/splice.c:416
 do_splice_to+0x105/0x170 fs/splice.c:880
net_ratelimit: 8 callbacks suppressed
protocol 88fb is buggy, dev hsr_slave_0
 splice_direct_to_actor+0x222/0x7b0 fs/splice.c:952
protocol 88fb is buggy, dev hsr_slave_1
 do_splice_direct+0x18d/0x230 fs/splice.c:1061
 do_sendfile+0x4db/0xbd0 fs/read_write.c:1441
 SYSC_sendfile64 fs/read_write.c:1502 [inline]
 SyS_sendfile64+0x102/0x110 fs/read_write.c:1488
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4598e9
RSP: 002b:00007fe02926fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000004598e9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fffc R11: 0000000000000246 R12: 00007fe0292706d4
R13: 00000000004c709e R14: 00000000004dc750 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..