Panic

[M. Warner Losh]

I have a dual system, and got this panic last night during
installworld.  Has anybody else seen this?  Or have ideas on tracking
it down.  Looks like a race in vm somehow.

Warner


Fatal trap 12: page fault while in kernel mode
cpuid = 0; lapic.id = 01000000
fault virtual address   = 0xbfca03cc
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc07c11e8
stack pointer           = 0x10:0xe9234b0c
frame pointer           = 0x10:0xe9234b40
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 21802 (sh)
kernel: type 12 trap, code=0
Stopped at      pmap_enter+0x98:        movl    0(%edx),%esi
db> trace
pmap_enter(c82053a4,280f3000,c27fe088,5,0) at pmap_enter+0x98
vm_fault(c82052f4,280f3000,1,0,c78d4e40) at vm_fault+0x16b2
trap_pfault(e9234d48,1,280f3038,e9234d34,280f3038) at trap_pfault+0x155
trap(2f,2f,2f,0,810c000) at trap+0x1fc
calltrap() at calltrap+0x5
--- trap 0xc, eip = 0x80b0fdc, esp = 0xbfbfe6a0, ebp = 0xbfbfe6b8 ---
db> panic
panic: from debugger
cpuid = 0; lapic.id = 01000000
Debugger("panic")


Fatal trap 3: breakpoint instruction fault while in kernel mode
cpuid = 0; lapic.id = 01000000
(ooops, no core dump)