Date: Tue, 17 Apr 2012 12:52:28 -0400 From: Chad C <chad@psys.us> To: stable@freebsd.org Subject: kernel panic while detecting cpu in FreeBSD 9 Message-ID: <4F8D9FCC.6000705@psys.us>
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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
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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