panic: trap type 4, code=0, pc=ffffffff82ac906b
Starting stack trace...
panic(ffffffff83348676) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80003c501850) at kerntrap+0x30b sys/arch/amd64/amd64/trap.c:486
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
sys_semop(ffff80003c456d00,ffff80003c501b00,ffff80003c501a50) at sys_semop+0x45b sys/kern/sysv_sem.c:615
syscall(ffff80003c501b00) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c501b00) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xea7a8777990, count: 251
End of stack trace.