panic: trap type 4, code=0, pc=ffffffff819c51f2
Starting stack trace...
panic(ffffffff8338f353) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff80003c961390) at kerntrap+0x2fb
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
sys_semop(ffff80003c94afb0,ffff80003c961600,ffff80003c961550) at sys_semop+0x352 sys/kern/sysv_sem.c:622
syscall(ffff80003c961600) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c961600) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2eaf1bbe40, count: 251
End of stack trace.