Re: Random panics with 5.3-REL, SMP

Here's the output of the panic.  It hung again while dumping core...

Fatal trap 12: page fault while in kernel mode

cpuid = 3; apic id = 02
fault virtual address	= 0xa748d260
fault code		= supervisor write, page not present
instruction pointer	= 0x8:0xc060b611
stack pointer		= 0x10:0xe971bc20
frame pointer		= 0x10:0xe971bc20
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		= 52 (swi6: task queue)
trap number		= 12
panic: page fault
cpuid = 3
boot() called on cpu#3
Uptime: 5d6h6m34s
Dumping 3967 MB
 16 32 48 64 80 96 112 128 144 160<hang>

Whenever it panics it will hang at a random point during the dump, this
last time was the farthest it got...

Someone seems to suspect bad ram as the culprit.  I can always swap
it out and see what happens.

	-Hogan

On Wed, Nov 24, 2004 at 11:24:43PM -0800, Doug White wrote:
> On Tue, 23 Nov 2004, Hogan Whittall wrote:
> 
> > Dell PE6450 server, 4xP3-700 Xeon, 4gb ram, system disks reside on
> > a 2 disk RAID1 attached to a MegaRAID controller.  Wireless is a
> > D-Link DWL-G520-B, also has Intel Pro/100 ethernet.
> 
> For the record, I have a PE6300 (4x500MHz) I'm testing a fix for panics of
> the form
> 
> panic: Previous IPI is stuck
> 
> if thats one of the "random panics" you're seeing.  The thread "number of
> CPUs and IPI panic" in -current has details, and a temporary patch is
> available from
> 
> http://people.freebsd.org/~ups/ipi4_patch
> 
> I believe this patch will apply to both RELENG_5 and -CURRENT, for now.
> 
> I was having a problem with random resets (no panic, just reset) and
> traced it to a broken cpu0.  Replacing it made the resets go away.
> 
> If you have room you may want to install RedHat or Windows on another
> partition, load up the OpenManage tools, and inspect the system event log
> for anything peculiar.  If you've never run this before then you may need
> to clear the event log for it to log any new events. If you have a DRAC
> card in the machine you can use that too.
> 
> -- 
> Doug White                    |  FreeBSD: The Power to Serve
> dwhite_at_gumbysoft.com          |  www.FreeBSD.org