linux-ext4 - Re: [Bug 14354] Bad corruption with 2.6.32-rc1 and upwards

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Message-ID: <20091108211235.GA7592@mit.edu>
Date:	Sun, 8 Nov 2009 16:12:35 -0500
From:	Theodore Tso <tytso@....edu>
To:	bugzilla-daemon@...zilla.kernel.org
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [Bug 14354] Bad corruption with 2.6.32-rc1 and upwards

> First off, it's slower. Secondly, 'l' is already 'strlen+1', so it looks 
> like ext4 _already_ copies the NUL terminating character.
> 
> So I suspect the debugging patch complained about writing a NUL to a 
> location that was already NUL to begin with.

Umm, yeah.  Good point.  Since the debugging patch marks the page ro,
short of doing a test before trying to null-terminate the symlink, the
debugging patch is always going to flag a false-positive here.

	  	   	  	   	- Ted
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