Re: [PATCH v5 0/7] treewide cleanup of random integer usage

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On Fri, Oct 07, 2022 at 11:53:52PM -0600, Jason A. Donenfeld wrote:
> This is a five part treewide cleanup of random integer handling. The
> rules for random integers are:

Reviewing the delta between of my .cocci rules and your v5, everything
matches, except for get_random_int() conversions for files not in
your tree:

diff --git a/drivers/gpu/drm/tests/drm_buddy_test.c b/drivers/gpu/drm/tests/drm_buddy_test.c
index 7a2b2d6bc3fe..62f69589a72d 100644
--- a/drivers/gpu/drm/tests/drm_buddy_test.c
+++ b/drivers/gpu/drm/tests/drm_buddy_test.c
@@ -729,7 +729,7 @@ static void drm_test_buddy_alloc_limit(struct kunit *test)
 static int drm_buddy_init_test(struct kunit *test)
 {
 	while (!random_seed)
-		random_seed = get_random_int();
+		random_seed = get_random_u32();
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/tests/drm_mm_test.c b/drivers/gpu/drm/tests/drm_mm_test.c
index 659d1af4dca7..c4b66eeae203 100644
--- a/drivers/gpu/drm/tests/drm_mm_test.c
+++ b/drivers/gpu/drm/tests/drm_mm_test.c
@@ -2212,7 +2212,7 @@ static void drm_test_mm_color_evict_range(struct kunit *test)
 static int drm_mm_init_test(struct kunit *test)
 {
 	while (!random_seed)
-		random_seed = get_random_int();
+		random_seed = get_random_u32();
 
 	return 0;
 }

So, I guess I mean to say that "prandom: remove unused functions" is
going to cause some pain. :) Perhaps don't push that to -next, and do a
final pass next merge window to catch any new stuff, and then send those
updates and the removal before -rc1 closes?

-- 
Kees Cook



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