kernel panic while detecting cpu in FreeBSD 9

[Konstantin Belousov]

On Tue, Apr 17, 2012 at 12:52:28PM -0400, Chad C wrote:
> 
> Hello,
> I posted to the FreeBSD forum and was told to seek help on the stable 
> mailing list.  I recently build a new system and attempted to install 
> FreeBSD 9 amd64 using the dvd.  Shortly after the boot loader menu while 
> the kernel attempts to detect the processor cores I receive a kernel 
> trap 12 error.  Kernel trap messages begin scrolling non stop but I was 
> able to get a picture when they paused and here is the text:
> 
> 
> kernel trap 12 with interrupts disabled
> 
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 00
> fault virtual address     = 0x18
> fault code        = supervisor read data, page not present
> instruction pointer    = 0x20:0xffffffff80823368
> stack pointer        = 0x28:0xffffffff811a5030
> frame pointer        = 0x28:0xffffffff811a5070
> code segment        = base 0x0, limit 0xfffff, type 0x1b
>             = DPL 0, pres 1, long 1, def32 0, gran 1
> processor eflags    = resume, IOPL = 0
> current process        = 0 ()
> trap number        = 12
> panic: page fault
> cpuid = 0
> 
> 
> The first suggestion from a forum poster was bad memory but I swapped 
> out the memory and still received the panics.  Also tested the memory 
> with memtest86+ and the bios memory test feature.  Both reported no 
> errors.  I finally was able to get it to boot and install by breaking to 
> the loader prompt and typing "kern.smp.disabled=1".  But the installed 
> system also panics at the same point during boot and the only way to get 
> it to boot is by disabling smp at the loader prompt.
> 
> I recompiled the kernel with "options DDB" and and tried tracing the 
> problem, but since it happens so soon into the boot process I cannot get 
> a crash dump.  Here is some of my system hardware if that helps as well:
>     MSI P67A-GD65 (B3) mainboard
>     intel core i5-2500K (quad core)
>     G.SKILL Ripjaws X Series 8GB (2 x 4GB) DDR3 1600
ddb is not for getting crash dump, it is for backtrace.
System with ddb present should print out the stack trace of the
panic location. Please post this information verbatim.

> 
> My original FreeBSD forum post is at: 
> http://forums.freebsd.org/showthread.php?t=31156 if that helps as well.  
> The last forum poster suggest the problem might be in 
> sys/amd64/amd64/mp_machdep.c and redirected me here.
> 
> Thanks for any assistance,
> 
> -Chad
> 
> 
> 
> 
> 
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