panic: missing alias
Starting stack trace...
panic(ffffffff82fb7826) at panic+0x1ba sys/kern/subr_prf.c:229
vgonel(fffffd8068cef1b0,ffff80002a4d0cc8) at vgonel+0x681 sys/kern/vfs_subr.c:1202
checkalias(fffffd806e45d440,800,0) at checkalias+0x1ab
cdevvp(800,ffffffff835f21f0) at cdevvp+0xd2 sys/kern/vfs_subr.c:509
cnopen(0,102,2000,ffff80002a4d0cc8) at cnopen+0x10c sys/dev/cons.c:78
spec_open(ffff80003761d618) at spec_open+0x2e9 sys/kern/spec_vnops.c:150
VOP_OPEN(fffffd8068cef6c0,102,fffffd807f7d79c0,ffff80002a4d0cc8) at VOP_OPEN+0x82 sys/kern/vfs_vops.c:138
vn_open(ffff80003761d7d0,102,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177
sys_ktrace(ffff80002a4d0cc8,ffff80003761d9b0,ffff80003761d900) at sys_ktrace+0x9a sys/kern/kern_ktrace.c:542
syscall(ffff80003761d9b0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7171b8f96b0, count: 246
End of stack trace.