Date: Mon, 26 Mar 2012 08:43:59 -0700 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: general protection fault panic Message-ID: <20120326154359.GB14611@troutmask.apl.washington.edu> In-Reply-To: <201203261059.35229.jhb@freebsd.org> References: <20120323222313.GA1331@troutmask.apl.washington.edu> <201203261059.35229.jhb@freebsd.org>
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On Mon, Mar 26, 2012 at 10:59:35AM -0400, John Baldwin wrote:
> On Friday, March 23, 2012 6:23:13 pm Steve Kargl wrote:
> > Haven't seen one of these in a long time.
> >
> > %uname -a
> > FreeBSD troutmask.apl.washington.edu 10.0-CURRENT FreeBSD
> > 10.0-CURRENT #0 r233282: Wed Mar 21 12:39:16 PDT 2012
> > kargl@troutmask.apl.washington.edu:/usr/obj/usr/src/sys/SPEW amd64
> >
> > Hand transcribed
> >
> > Fatal trap 9: general protection fault while in kernel mode
> > cpuid = 1; apic id = 01
> > instruction pointer = 0x20:0xffffffff80570b89
>
> Can you run gdb on your kernel.debug and 'l *' this address?
>
Unfortunately, I don't have that kernel.debug anymore. I saw
that alc had committed a few changes, so updated the kernel.
I do have the kernel and kernel.symbol files. Loading
kernel.symbol into gdb shows
(gdb) l *0xffffffff80570b89
0xffffffff80570b89 is in strcmp (/usr/src/sys/libkern/strcmp.c:45).
40 */
41 int
42 strcmp(s1, s2)
43 register const char *s1, *s2;
44 {
45 while (*s1 == *s2++)
46 if (*s1++ == 0)
47 return (0);
48 return (*(const unsigned char *)s1 - *(const unsigned char *)(s2 - 1));
49 }
Don't know if the above helps or is a red-herring.
I may be able to reproduce the crash. I give it a try in a
few moments.
--
Steve
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