Commit c16831b4 authored Feb 12, 2009 by Manish Katiyar Committed by Jan Kara Mar 26, 2009

ext2: Zero our b_size in ext2_quota_read()



ext2_quota_read() doesn't initialize tmp_bh.b_size before calling
ext2_get_block() where we access it. Since it is a local variable it
might contain some garbage. Make sure it is filled with reasonable
value before passing.

Signed-off-by: Manish Katiyar <mkatiyar@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>

parent 620372a9

fs/ext2/super.c

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -1331,6 +1331,7 @@ static ssize_t ext2_quota_read(struct super_block sb, int type, char data,
	sb->s_blocksize - offset : toread;		sb->s_blocksize - offset : toread;

	tmp_bh.b_state = 0;		tmp_bh.b_state = 0;
			tmp_bh.b_size = sb->s_blocksize;
	err = ext2_get_block(inode, blk, &tmp_bh, 0);		err = ext2_get_block(inode, blk, &tmp_bh, 0);
	if (err < 0)		if (err < 0)
	return err;		return err;