From owner-freebsd-bugs  Mon Feb  4  9: 0: 6 2002
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Date: Mon, 4 Feb 2002 09:00:02 -0800 (PST)
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From: David Malone <dwmalone@maths.tcd.ie>
Subject: Re: kern/34613: kernel panic in ufsdirhash_lookup 
Reply-To: David Malone <dwmalone@maths.tcd.ie>
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The following reply was made to PR kern/34613; it has been noted by GNATS.

From: David Malone <dwmalone@maths.tcd.ie>
To: Michael Vasilenko <acid@dg.net.ua>
Cc: FreeBSD-gnats-submit@freebsd.org
Subject: Re: kern/34613: kernel panic in ufsdirhash_lookup 
Date: Mon, 04 Feb 2002 16:59:29 +0000

 > DM> Actually, the offset 33571596 in hex is 0x200430c. I wonder if that
 > DM> is a top bit which got set in the offset by accident. Do you know
 > DM> which directory it would have been searching for "runiv-month.png.meta"
 > DM> in? Could you "ls -ld" it?
 
 > thunderbird:/var/mrtg# ls -l univ-month.png.meta
 > -rw-r--r--  1 root  www  39 Feb  4 17:12 univ-month.png.meta
 > thunderbird:/var/mrtg# ls -ld
 > drwxr-xr-x  2 root  www  97792 Feb  4 18:42 .
 
 OK - If I remove the top bit from 0x200430c, then I get 17164
 decimal, which looks like a valid offset in that directory. My guess
 is that something is causing random bit flips in memory and this
 the cause of the crashes. Could you post the output of "hd -s 17100
 -l 128 ." in that directory, that way we can see if 17164 is the
 right offset.
 
 If it does look like random bit flips then we'll have to figure out
 if it is a software or hardware problem.
 
 	David.

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