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Squashfs: add missing check in zlib_wrapper 

On file system corruption zlib can return Z_STREAM_OK with
input buffers remaining, which will not be released.

Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
This commit is contained in:
Phillip Lougher 2011-01-05 18:02:37 +00:00
parent 170cf02165
commit e7ee11f0ec
1 changed files with 5 additions and 0 deletions
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5
fs/squashfs/zlib_wrapper.c
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@ -127,6 +127,11 @@ static int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer,
goto release_mutex;
}
if (k < b) {
ERROR("zlib_uncompress error, data remaining\n");
goto release_mutex;
}
length = stream->total_out;
mutex_unlock(&msblk->read_data_mutex);
return length;