panic: trap type 4, code=0, pc=ffffffff819ba81e Starting stack trace... panic(ffffffff82fb2eea) at panic+0x1ba sys/kern/subr_prf.c:229 kerntrap(ffff8000376153f0) at kerntrap+0x28b sys/arch/amd64/amd64/trap.c:327 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b sys_semop(ffff80002a47aa68,ffff8000376156a0,ffff8000376155f0) at sys_semop+0x3ae sys/kern/sysv_sem.c:620 syscall(ffff8000376156a0) at syscall+0x97 verify_smap sys/arch/amd64/amd64/trap.c:502 [inline] syscall(ffff8000376156a0) at syscall+0x97 sys/arch/amd64/amd64/trap.c:558 e Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x10ffc030280, count: 251 End of stack trace. syncing disks...s= 0 s= 0 show 0 sho panic trace show 0 sho panic trace sho registers show 0 sho panic trace sho registers sho proc ps show 0 sho panic trace sho registers sho proc ps sho all locks show 0 sho panic trace sho registers sho proc ps sho all locks sho malloc show 0 sho panic trace sho registers sho proc ps sho all locks sho malloc sho all pools machine ddbcpu 0 trace machine ddbcpu 1 trace