Commit c1b75eab authored Jan 03, 2013 by Jaegeuk Kim

f2fs: avoid null dereference in f2fs_acl_from_disk



This patch resolves Coverity #751303:

>>> CID 753103: Explicit null dereferenced (FORWARD_NULL) Passing null
>>> pointer "value" to function "f2fs_acl_from_disk(char const *, size_t)",
	which dereferences it.

[Error path]
- value = NULL;
- retval = 0 by f2fs_getxattr();
- f2fs_acl_from_disk(value:NULL, ...);

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

parent d66d1f76

fs/f2fs/acl.c

+6 −7

Original line number	Diff line number	Diff line
		@@ -191,15 +191,14 @@ struct posix_acl f2fs_get_acl(struct inode inode, int type)
		retval = f2fs_getxattr(inode, name_index, "", value, retval);
		}

		if (retval < 0) {
		if (retval == -ENODATA)
		if (retval > 0)
		acl = f2fs_acl_from_disk(value, retval);
		else if (retval == -ENODATA)
		acl = NULL;
		else
		acl = ERR_PTR(retval);
		} else {
		acl = f2fs_acl_from_disk(value, retval);
		}
		kfree(value);

		if (!IS_ERR(acl))
		set_cached_acl(inode, type, acl);