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kobject: fix memory leak in kobject_set_name_vargs

If the call to kvasprintf fails then the old name of the object will be leaked,
this patch fixes the bug by restoring the old name before returning ENOMEM.

Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Maurizio Lombardi 11 жил өмнө
parent
commit
020d30f17f
1 өөрчлөгдсөн 3 нэмэгдсэн , 1 устгасан
  1. 3 1
      lib/kobject.c

+ 3 - 1
lib/kobject.c

@@ -265,8 +265,10 @@ int kobject_set_name_vargs(struct kobject *kobj, const char *fmt,
 		return 0;
 
 	kobj->name = kvasprintf(GFP_KERNEL, fmt, vargs);
-	if (!kobj->name)
+	if (!kobj->name) {
+		kobj->name = old_name;
 		return -ENOMEM;
+	}
 
 	/* ewww... some of these buggers have '/' in the name ... */
 	while ((s = strchr(kobj->name, '/')))