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Date:      Tue, 18 Sep 2001 17:23:08 +0100
From:      David Taylor <davidt@yadt.co.uk>
To:        Julian Elischer <julian@elischer.org>
Cc:        current@freebsd.org, hackers@freebsd.org
Subject:   Re: testig  request for your code..
Message-ID:  <20010918172308.A6968@gattaca.yadt.co.uk>
In-Reply-To: <Pine.BSF.4.21.0109171806290.17561-100000@InterJet.elischer.org>; from julian@elischer.org on Mon, Sep 17, 2001 at 18:08:01 -0700
References:  <Pine.BSF.4.21.0109171806290.17561-100000@InterJet.elischer.org>

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On Mon, 17 Sep 2001, Julian Elischer wrote:
> 
> If you find a module that worked in a kernel from before September 11
> but does not work on -current, please let Julian@freebsd.org know.
>  

NTFS was working correctly in a kernel from sometime in August, it now fails
with an easily reproducable panic about locks.  Unfortunately, I never wrote
down the trace since I was planning on using gdb -k to debug it.. but:

# gdb -k kernel.6 vmcore.6
GNU gdb 4.18
Copyright 1998 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-unknown-freebsd"...
(no debugging symbols found)...
IdlePTD 4620288
initial pcb at 370340
panicstr: bremfree: bp 0xc8977ba0 not locked
panic messages:
---
panic: lockmgr: pid 943, not exclusive lock holder 942 unlocking

dumping to dev ad0s4b, offset 584197
dump ata0: resetting devices .. done
256 [snip] 1
---
Bus error (core dumped)

So, I guess I'll need to copy it down by hand next time I'm prepared to
crash my system.. (A simple cd /mnt/w2k/; ls; crashes the box.  Oddly
enough, it didn't seem to have the same effect in single-user mode, not sure
why...)

-- 
David Taylor
davidt@yadt.co.uk

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