invalid inflight: 1 state 4 cwnd 10 mss 21888 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3693 at net/ipv4/tcp_output.c:2507 tcp_send_loss_probe.cold+0x7e/0x94 net/ipv4/tcp_output.c:2507 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 3693 Comm: syz-executor.4 Not tainted 4.14.145+ #0 Call Trace: __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_send_loss_probe.cold+0x7e/0x94 net/ipv4/tcp_output.c:2507 RSP: 0018:ffff8881dbb07ca8 EFLAGS: 00010286 RAX: 000000000000002d RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8d869f80 RDI: ffffed103b760f87 RBP: ffff8881d30d8a80 R08: 000000000000002d R09: ffffed103b764ce9 R10: ffffed103b764ce8 R11: ffff8881dbb26747 R12: 0000000000005580 R13: 0000000000000001 R14: 000000000000000a R15: ffff8881d30d8a80 tcp_write_timer_handler+0x46b/0x780 net/ipv4/tcp_timer.c:575 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 RIP: 0010:copy_pte_range mm/memory.c:1102 [inline] RIP: 0010:copy_pmd_range mm/memory.c:1157 [inline] RIP: 0010:copy_pud_range mm/memory.c:1191 [inline] RIP: 0010:copy_p4d_range mm/memory.c:1213 [inline] RIP: 0010:copy_page_range+0xcf2/0x1860 mm/memory.c:1275 RSP: 0018:ffff88819f4c7a60 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: 1ffff1103a66e0c8 RBX: 80000001cf345007 RCX: ffffffff8bee0e04 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8881cd8c3058 RBP: ffffea00073cd100 R08: 000000000000606d R09: ffffed1039b1860c R10: ffffed1039b1860b R11: ffff8881cd8c305b R12: ffff8881d3370640 R13: 0000000000000000 R14: 00007f43232c8000 R15: dffffc0000000000 dup_mmap kernel/fork.c:719 [inline] dup_mm kernel/fork.c:1213 [inline] copy_mm kernel/fork.c:1268 [inline] copy_process.part.0+0x2d30/0x66c0 kernel/fork.c:1895 copy_process kernel/fork.c:1679 [inline] _do_fork+0x197/0xce0 kernel/fork.c:2220 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457fda RSP: 002b:00007ffd0f757ec0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffd0f757ec0 RCX: 0000000000457fda RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffd0f757f00 R08: 0000000000000001 R09: 0000000000f0a940 R10: 0000000000f0ac10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffd0f757f50 Kernel Offset: 0xaa00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) Rebooting in 86400 seconds..