[patch] hfs: copying wrong data in hfs_readdir()

[patch] hfs: copying wrong data in hfs_readdir()

[Dan Carpenter]

Smatch complains that this is copying stack data when then intent was
to copy fd.key.  The way I have written it matches how hfsplus_readdir()
is implemented.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
I tried to test this, but to reach the memcpy() you would need to make
one of the calls to filldir() fail and I don't know how to do that.  I
think that in the original code this would cause a crash when we call
hfs_find_exit()

diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
index 62fc14e..f637bd5 100644
--- a/fs/hfs/dir.c
+++ b/fs/hfs/dir.c
@@ -162,7 +162,7 @@ static int hfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 		rd->file = filp;
 		list_add(&rd->list, &HFS_I(inode)->open_dir_list);
 	}
-	memcpy(&rd->key, &fd.key, sizeof(struct hfs_cat_key));
+	memcpy(&rd->key, fd.key, sizeof(struct hfs_cat_key));
 out:
 	hfs_find_exit(&fd);
 	return err;