panic: mutex 0xfffffd806e878510 not held in knote_dequeue
Starting stack trace...
panic(ffffffff82460c20) at panic+0x16b sys/kern/subr_prf.c:233
knote_dequeue(fffffd806a25f4d8) at knote_dequeue+0x12b sys/kern/kern_event.c:1860
filt_timermodify(ffff800022f01940,fffffd806a25f4d8) at filt_timermodify+0x6f sys/kern/kern_event.c:479
kqueue_register(fffffd806e878510,ffff800022f01940,ffff800021270000) at kqueue_register+0xa89 filter_modify sys/kern/kern_event.c:662 [inline]
kqueue_register(fffffd806e878510,ffff800022f01940,ffff800021270000) at kqueue_register+0xa89 sys/kern/kern_event.c:1125
sys_kevent(ffff800021270000,ffff800022f01b38,ffff800022f01b80) at sys_kevent+0x214 sys/kern/kern_event.c:887
syscall(ffff800022f01c00) at syscall+0x5bf mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800022f01c00) at syscall+0x5bf sys/arch/amd64/amd64/trap.c:587
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xd5df890b4d0, count: 250
End of stack trace.