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, 3 insertions, 3 deletions

diff --git a/lib/test_vmalloc.c b/lib/test_vmalloc.c
index 104f09ea5fcc..f90d2c27675b 100644
--- a/lib/test_vmalloc.c
+++ b/lib/test_vmalloc.c
@@ -151,7 +151,7 @@ static int random_size_alloc_test(void)
 	int i;
 
 	for (i = 0; i < test_loop_count; i++) {
-		n = get_random_u32_below(100) + 1;
+		n = get_random_u32_inclusive(1, 100);
 		p = vmalloc(n * PAGE_SIZE);
 
 		if (!p)
@@ -291,12 +291,12 @@ pcpu_alloc_test(void)
 		return -1;
 
 	for (i = 0; i < 35000; i++) {
-		size = get_random_u32_below(PAGE_SIZE / 4) + 1;
+		size = get_random_u32_inclusive(1, PAGE_SIZE / 4);
 
 		/*
 		 * Maximum PAGE_SIZE
 		 */
-		align = 1 << (get_random_u32_below(11) + 1);
+		align = 1 << get_random_u32_inclusive(1, 11);
 
 		pcpu[i] = __alloc_percpu(size, align);
 		if (!pcpu[i])