kern/119890: debuggin pidgin with gdb causes kernel crash

[tadokoro]

hi,

kernel does not panic, so I cannot dump kernel.
And I saw message "kernel trap 9 with interrupts disabled" on the console.
So I built kernel with kdb and ddb,
and I did single stepping execution with break point at printf.

At doreti_iret_faut,

db> s
Stopped at         doreti_iret_fault:      subq $0x98,%rsp
db> s
Stopped at         doreti_iret_fault+0x7:  testb $0x3,0xa0(%rsp)
db> s
Stopped at         doreti_iret_fault+0xf:  jz doreti_iret_fault+0x14
db> s
Stopped at         doreti_iret_fault+0x11: invlpg %ax
db> s

not return...
Keyboard(num lock or caps lock) does not react.
What should I do?

-- 
tadokoro