panic: trap type 4, code=0, pc=ffffffff827d2a32
Starting stack trace...
panic(ffffffff833a2d6d) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80003c458ec0) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
sys_semop(ffff800033009ca8,ffff80003c459140,ffff80003c459090) at 
sys_semop+0x352
syscall(ffff80003c459140) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c459140) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x315517916b0, count: 251
End of stack trace.