uvm_fault(0xfffffd800b0273d0, 0x0, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff830d9c38 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003c44ade0
gsbase 0xffff8000299edff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff830d9c38
Starting stack trace...
panic(ffffffff833cb830) at panic+464
kerntrap(ffff80003c44ad30) at kerntrap+779
alltraps_kern_meltdown() at alltraps_kern_meltdown+123
dt_ioctl_record_stop(ffff800001686000) at dt_ioctl_record_stop+264
dtclose(11e5f,9,2000,ffff8000fffe82b8) at dtclose+265
spec_close(ffff80003c44aee0) at spec_close+1126
VOP_CLOSE(fffffd806a7d8b18,9,fffffd80097fb618,ffff8000fffe82b8) at VOP_CLOSE+306
vn_closefile(fffffd806c583340,ffff8000fffe82b8) at vn_closefile+299
fdrop(fffffd806c583340,ffff8000fffe82b8) at fdrop+289
closef(fffffd806c583340,ffff8000fffe82b8) at closef+402
fdfree(ffff8000fffe82b8) at fdfree+278
exit1(ffff8000fffe82b8,0,0,1) at exit1+1398
sys_exit(ffff8000fffe82b8,ffff80003c44b250,ffff80003c44b1a0) at sys_exit+26
syscall(ffff80003c44b250) at syscall+2839
Xsyscall() at Xsyscall+296
end of kernel
end trace frame: 0x7f48d10b9dd0, count: 242
End of stack trace.