On a verbose boot of the SNAP ISO we see: ... Timecounters tick every 10.0000 msec lo0: bpf attached [0] f:00 typ:0 s(CHS):0/0/0 e(CHS):0/0/0 s:0 I:0 [1] f:00 typ:0 s(CHS):0/0/0 e(CHS):0/0/0 s:0 I:0 [2] f:00 typ:0 s(CHS):0/0/0 e(CHS):0/0/0 s:0 I:0 [3] f:80 typ:165 s(CHS):0/0/1 e(CHS):1023/254/63 s:0 I:50000 GEOM: Configure md0a, start 0 length 4423680 end 4423679 GEOM: Configure md0c, start 0 length 4423680 end 4423679 GEOM: new disk idad0
Fatal trap 12: page fault while in kernel mode ... supervisor read, page not present ... pid is 4 (g_down) ... Stopped at: ida_construct_qcb+0xca: movzbl 0x5c(%eax),%eax db> trace ida_construct_qcb... ida_submit_buf... idad_strategy... g_disk_start... g_io_schedule_down... g_down_procbody... fork_exit... fork_trampoline... --- trap 0x1, eip = 0, esp = 0xd6991d7c, ebp = 0 ---
It looks like this is coming from around line 396 in /usr/src/sys/dev/ida/ida.c where it bzero()s the hardware qcb...
Hopefully someone more familiar with this can give some pointers as to where I can help here. The machine is empty so trial and error consists of burning ISOs/writing .flps and attempting boot with them.
Thanks -- William Carrel
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