From: Jan Kara <jack@ghost.suse.cz>
Date: Tue, 6 May 2008 16:26:17 +0000 (+0200)
Subject: udf: Fix memory corruption when fs mounted with noadinicb option
X-Git-Tag: v2.6.26-rc2~34^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9afadc4b1fd25337003832c9a4668f9bd42cdda9;p=pandora-kernel.git

udf: Fix memory corruption when fs mounted with noadinicb option

When UDF filesystem is mounted with noadinicb mount option, it
happens that we extend an empty directory with a block. A code in
udf_add_entry() didn't count with this possibility and used
uninitialized data leading to memory and filesystem corruption.
Add a check whether file already has some extents before operating
on them.

Signed-off-by: Jan Kara <jack@suse.cz>
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