From owner-freebsd-bugs  Wed Aug 29  3:10:10 2001
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Date: Wed, 29 Aug 2001 03:10:04 -0700 (PDT)
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From: Chris Pockele <chrisp@belgacom.net>
Subject: Re: misc/30168: 4-stable, crash when writing to msdos fs
Reply-To: Chris Pockele <chrisp@belgacom.net>
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The following reply was made to PR misc/30168; it has been noted by GNATS.

From: Chris Pockele <chrisp@belgacom.net>
To: freebsd-gnats-submit@FreeBSD.org, chrisp@belgacom.net
Cc: Kris Kennaway <kris@obsecurity.org>
Subject: Re: misc/30168: 4-stable, crash when writing to msdos fs
Date: Wed, 29 Aug 2001 11:58:03 +0200

 (followup)
 
 I compiled a kernel with the following extra options:
 
 makeoptions     DEBUG=-g                #Build kernel with gdb(1) debug
 symbols
 options DDB
 options DIAGNOSTIC
 options DEBUG
 
 The error is now:
 
 Fatal trap 12: page fault while in kernel mode
 fault virtual address = 0xe0b83ffc
 fault code = supervisor read, page not present
 instruction pointer = 0x8:0xc0190cc3
 stack pointer = 0x10:0xc81cad14
 code segment = base 0x0, limit 0xfffff, type 0x1b
 	     = BPL 0, pres 1, def32 1, gran 1
 processor eflags = interrupt enabled, resume, IOPL=0
 current process = 314 (cp)
 interrupt mask = none
 
 Stopped at updatefats+0x37: andl 0(%esi, %edx, 4),%eax
 
 
 something else i did (as described in the FAQ):
 freedaemon# nm -n /kernel | grep c0190cc3
 freedaemon# nm -n /kernel | grep c0190cc
 freedaemon# nm -n /kernel | grep c0190c
 c0190c18 t fc_lookup
 c0190c64 T fc_purge
 c0190c8c t updatefats

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