panic: trap type 6, code=0, pc=ffffffff8261ec18
Starting stack trace...
panic(ffffffff83341c80) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80003ac35840) at kerntrap+0x30b sys/arch/amd64/amd64/trap.c:486
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
_copyinstr() at _copyinstr+0x58
namei(ffff80003ac35bf8) at namei+0x190 sys/kern/vfs_lookup.c:156
vn_open(ffff80003ac35bf8,f00cb052,0) at vn_open+0x13f sys/kern/vfs_vnops.c:140
doopenat(ffff800032ff8cf0,ffffff9c,0,f00cb051,0,ffff80003ac35da0) at doopenat+0x32e sys/kern/vfs_syscalls.c:1137
syscall(ffff80003ac35e50) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003ac35e50) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa01d9692ff0, count: 248
End of stack trace.

dump to dev 4,1 not possible