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Date:      Sun, 17 Oct 1999 19:58:45 +1300
From:      Greg Lehey <grog@lemis.com>
To:        Ben Goodwin <ben@hamsterville.ultranet.com>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Fw: 3.3R box crashing; need help debugging the crash
Message-ID:  <19991017195845.65410@mojave.worldwide.lemis.com>
In-Reply-To: <00a201bf185f$520089f0$6a477392@dsg.hamsterville.ultranet.com>; from Ben Goodwin on Sun, Oct 17, 1999 at 01:20:26AM -0400
References:  <011201bf15ec$2d177380$6a477392@dsg.hamsterville.ultranet.com> <19991014130605.Y78191@freebie.lemis.com> <00a201bf185f$520089f0$6a477392@dsg.hamsterville.ultranet.com>

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On Sunday, 17 October 1999 at  1:20:26 -0400, Ben Goodwin wrote:
>> I don't see any results.  If you had trouble getting them, you need to
>> describe the trouble, not ignore the technique.
>
> I snipped them out in this message since I'd already posteed them and didn't
> want to post a big msg again ... :-)

You can leave out the original panic message if you have the dump, and
the kernel config is not often of use.  Extracts from the dmesg, on
the other hand, would tell us something, for example which version of
FreeBSD you're running.  Don't expect me to go and look for your old
messages, I don't have time for that.

> I'll re-post them below ...
>
> BTW It's a pentium-II/400 in the new asus p3bf board, 128 mb ram, IDE disk
> ... It doesn't any local X, tho I do use exceed against it ... I've had it
> crash in single-user while moving some data around, too ..
> I haven't figured out a sure-fire way to get it to crash,  however.. So all
> I can hope is that the data below will help shed some light ..

The software info is more important than the hardware.

> ---
> #0  boot (howto=256) at ../../kern/kern_shutdown.c:285
> 285                     dumppcb.pcb_cr3 = rcr3();
> (kgdb) back
> #0  boot (howto=256) at ../../kern/kern_shutdown.c:285
> #1  0xc012da71 in panic (fmt=0xc01e4dc2 "page fault")
>     at ../../kern/kern_shutdown.c:446
> #2  0xc01b9c7e in trap_fatal (frame=0xc65e1ecc, eva=3217689216)
>     at ../../i386/i386/trap.c:942
> #3  0xc01b9937 in trap_pfault (frame=0xc65e1ecc, usermode=0, eva=3217689216)
>     at ../../i386/i386/trap.c:835
> #4  0xc01b9596 in trap (frame={tf_es = -966918128, tf_ds = -1071972336,
>       tf_edi = 0, tf_esi = -1066399468, tf_ebp = -966910184,
>       tf_isp = -966910220, tf_ebx = -1066399468, tf_edx = 0,
>       tf_ecx = -1077278080, tf_eax = 658048, tf_trapno = 12, tf_err = 0,
>       tf_eip = -1071938977, tf_cs = 8, tf_eflags = 66050, tf_esp
> = -968018496,
>       tf_ss = 0}) at ../../i386/i386/trap.c:437
> #5  0xc01b825f in pmap_remove_pages (pmap=0xc64d3624, sva=0, eva=3217022976)
>     at ../../i386/i386/pmap.c:2913

This looks like a VM problem.

> #6  0xc0127ad2 in exit1 (p=0xc64ce760, rv=0) at ../../kern/kern_exit.c:216
> #7  0xc01278e4 in exit1 (p=0xc64ce760, rv=-966910060)
>     at ../../kern/kern_exit.c:104
> #8  0xc01b9ec7 in syscall (frame={tf_es = 674234407, tf_ds = -1078001625,
>       tf_edi = 0, tf_esi = -1, tf_ebp = -1077946784, tf_isp = -966909980,
>       tf_ebx = 674186856, tf_edx = 0, tf_ecx = 136933376, tf_eax = 1,
>       tf_trapno = 0, tf_err = 2, tf_eip = 673931908, tf_cs = 31,
>       tf_eflags = 582, tf_esp = -1077946804, tf_ss = 39})
> ---Type <return> to continue, or q <return> to quit---
>     at ../../i386/i386/trap.c:1100
> #9  0xc01af84c in Xint0x80_syscall ()
> Cannot access memory at address 0xbfbfd660.

OK, the most important question now: which version of FreeBSD?

Greg
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