drivers: avoid parsing names as kthread_run() format strings

Calling kthread_run with a single name parameter causes it to be handled
as a format string. Many callers are passing potentially dynamic string
content, so use "%s" in those cases to avoid any potential accidents.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/media/pci/ivtv/ivtv-driver.c

@@ -753,7 +753,7 @@ static int ivtv_init_struct1(struct ivtv *itv)
 
 	init_kthread_worker(&itv->irq_worker);
 	itv->irq_worker_task = kthread_run(kthread_worker_fn, &itv->irq_worker,
-					   itv->v4l2_dev.name);
+					   "%s", itv->v4l2_dev.name);
 	if (IS_ERR(itv->irq_worker_task)) {
 		IVTV_ERR("Could not create ivtv task\n");
 		return -1;