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 <keescook@chromium.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> # for infiniband
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 1 insertions, 1 deletions

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;