From e8a533cbeb79809206f8724e89961e0079508c3c Mon Sep 17 00:00:00 2001 From: "Jason A. Donenfeld" Date: Sun, 9 Oct 2022 20:44:02 -0600 Subject: treewide: use get_random_u32_inclusive() when possible These cases were done with this Coccinelle: @@ expression H; expression L; @@ - (get_random_u32_below(H) + L) + get_random_u32_inclusive(L, H + L - 1) @@ expression H; expression L; expression E; @@ get_random_u32_inclusive(L, H - + E - - E ) @@ expression H; expression L; expression E; @@ get_random_u32_inclusive(L, H - - E - + E ) @@ expression H; expression L; expression E; expression F; @@ get_random_u32_inclusive(L, H - - E + F - + E ) @@ expression H; expression L; expression E; expression F; @@ get_random_u32_inclusive(L, H - + E + F - - E ) And then subsequently cleaned up by hand, with several automatic cases rejected if it didn't make sense contextually. Reviewed-by: Kees Cook Reviewed-by: Greg Kroah-Hartman Reviewed-by: Jason Gunthorpe # for infiniband Signed-off-by: Jason A. Donenfeld --- kernel/kcsan/selftest.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'kernel/kcsan') diff --git a/kernel/kcsan/selftest.c b/kernel/kcsan/selftest.c index 7b619f16a492..8679322450f2 100644 --- a/kernel/kcsan/selftest.c +++ b/kernel/kcsan/selftest.c @@ -31,7 +31,7 @@ static bool __init test_encode_decode(void) int i; for (i = 0; i < ITERS_PER_TEST; ++i) { - size_t size = get_random_u32_below(MAX_ENCODABLE_SIZE) + 1; + size_t size = get_random_u32_inclusive(1, MAX_ENCODABLE_SIZE); bool is_write = !!get_random_u32_below(2); unsigned long verif_masked_addr; long encoded_watchpoint; -- cgit