Commit a36d515c authored Apr 23, 2010 by Joel Becker

ocfs2_dlmfs: Fix math error when reading LVB.



When asked for a partial read of the LVB in a dlmfs file, we can
accidentally calculate a negative count.

Reported-by: Dan Carpenter <error27@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Joel Becker <joel.becker@oracle.com>

parent c21a534e

fs/ocfs2/dlmfs/dlmfs.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -262,7 +262,7 @@ static ssize_t dlmfs_file_read(struct file *filp,
		if ((count + *ppos) > i_size_read(inode))
		readlen = i_size_read(inode) - *ppos;
		else
		readlen = count - *ppos;
		readlen = count;

		lvb_buf = kmalloc(readlen, GFP_NOFS);
		if (!lvb_buf)