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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