uvm_fault(0xfffffd8009eda780, 0x0, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff8226cb80 cs 8 rflags 10246 cr2 0 cpl 0 rsp ffff80003c40bc80
gsbase 0xffffffff83828ff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff8226cb80
Starting stack trace...
panic(ffffffff8332de01) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80003c40bbd0) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dt_ioctl_record_stop(ffff800001484000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:579
dtclose(11e63,81,2000,ffff80003c45ef98) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(11e63,81,2000,ffff80003c45ef98) at dtclose+0x105 sys/dev/dt/dt_dev.c:232
spec_close(ffff80003c40bd80) at spec_close+0x45f sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd806b811af8,81,fffffd807f7d3410,ffff80003c45ef98) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156
vn_closefile(fffffd80659a5248,ffff80003c45ef98) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd80659a5248,ffff80003c45ef98) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd80659a5248,ffff80003c45ef98) at fdrop+0x126 sys/kern/kern_descrip.c:1265
closef(fffffd80659a5248,ffff80003c45ef98) at closef+0x192 sys/kern/kern_descrip.c:1249
fdfree(ffff80003c45ef98) at fdfree+0x116 sys/kern/kern_descrip.c:1181
exit1(ffff80003c45ef98,b,0,1) at exit1+0x58f sys/kern/kern_exit.c:214
sys_exit(ffff80003c45ef98,ffff80003c40c0f0,ffff80003c40c040) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003c40c0f0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c40c0f0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7b01a7b26460, count: 242
End of stack trace.

dump to dev 4,1 not possible