With up-to-the-minute sources, I got the following crash while trying
to install amd64-current in a qemu-VM.
ioctl DIOCGMEDIASIZE failed 19ge media |
uvm_fault(0xc2983d40, 0, 1) -> 0xe                         |
fatal page fault in supervisor mode                        |
trap type 6 code 0 eip c09115dd cs 8 eflags 296 cr2 28 ilevel 0 esp f0b
curlwp 0xc2a81aa0 pid 3907 lid 1 lowest kstack 0xdaadc2c0  |
kernel: supervisor trap page fault, code=0                 |
Stopped in pid 3907.1 (sysinst) at      c09115dd:       mull 28(%ecx),%eax
db{0}>
The same sources were used to create a i386-current system, and I was
able to install it successfully.
FWIW, my source tree is time-stamped at "2015-12-05 at 03:08:57 UTC"
+------------------+--------------------------+------------------------+
| Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:      |
| (Retired)        | FA29 0E3B 35AF E8AE 6651 | paul at whooppee.com   |
| Kernel Developer | 0786 F758 55DE 53BA 7731 | pgoyette at netbsd.org |
+------------------+--------------------------+------------------------+