Commit b9d6cfde authored Sep 12, 2012 by Aristeu Rozanski Committed by Tejun Heo Sep 13, 2012

xattr: mark variable as uninitialized to make both gcc and smatch happy



new_xattr in __simple_xattr_set() is only initialized with a valid
pointer if value is not NULL, which only happens if this function is
called directly with the intention to remove an existing extended
attribute. Even being safe to be this way, smatch warns about possible
NULL dereference. Dan Carpenter suggested using uninitialized_var()
which will make both gcc and smatch happy.

Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Aristeu Rozanski <aris@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

parent 4895768b

fs/xattr.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -845,7 +845,7 @@ static int __simple_xattr_set(struct simple_xattrs xattrs, const char name,
		const void *value, size_t size, int flags)
		{
		struct simple_xattr *xattr;
		struct simple_xattr *new_xattr = NULL;
		struct simple_xattr *uninitialized_var(new_xattr);
		int err = 0;

		/* value == NULL means remove */