treewide: Replace kmalloc with kmalloc_obj for non-scalar types

This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:

Single allocations:	kmalloc(sizeof(TYPE), ...)
are replaced with:	kmalloc_obj(TYPE, ...)

Array allocations:	kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with:	kmalloc_objs(TYPE, COUNT, ...)

Flex array allocations:	kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with:	kmalloc_flex(*PTR, FAM, COUNT, ...)

(where TYPE may also be *VAR)

The resulting allocations no longer return "void *", instead returning
"TYPE *".

Signed-off-by: Kees Cook <kees@kernel.org>

1 files changed, 5 insertions, 6 deletions

diff --git a/kernel/locking/test-ww_mutex.c b/kernel/locking/test-ww_mutex.c
index 79b5e45f8d4c..2cc6d1937670 100644
--- a/kernel/locking/test-ww_mutex.c
+++ b/kernel/locking/test-ww_mutex.c
@@ -324,7 +324,7 @@ static int __test_cycle(struct ww_class *class, unsigned int nthreads)
 	unsigned int n, last = nthreads - 1;
 	int ret;
 
-	cycles = kmalloc_array(nthreads, sizeof(*cycles), GFP_KERNEL);
+	cycles = kmalloc_objs(*cycles, nthreads, GFP_KERNEL);
 	if (!cycles)
 		return -ENOMEM;
 
@@ -412,7 +412,7 @@ static int *get_random_order(int count)
 	int *order;
 	int n, r;
 
-	order = kmalloc_array(count, sizeof(*order), GFP_KERNEL);
+	order = kmalloc_objs(*order, count, GFP_KERNEL);
 	if (!order)
 		return order;
 
@@ -506,7 +506,7 @@ static void stress_reorder_work(struct work_struct *work)
 		return;
 
 	for (n = 0; n < stress->nlocks; n++) {
-		ll = kmalloc(sizeof(*ll), GFP_KERNEL);
+		ll = kmalloc_obj(*ll, GFP_KERNEL);
 		if (!ll)
 			goto out;
 
@@ -582,12 +582,11 @@ static int stress(struct ww_class *class, int nlocks, int nthreads, unsigned int
 	struct stress *stress_array;
 	int n, count;
 
-	locks = kmalloc_array(nlocks, sizeof(*locks), GFP_KERNEL);
+	locks = kmalloc_objs(*locks, nlocks, GFP_KERNEL);
 	if (!locks)
 		return -ENOMEM;
 
-	stress_array = kmalloc_array(nthreads, sizeof(*stress_array),
-				     GFP_KERNEL);
+	stress_array = kmalloc_objs(*stress_array, nthreads, GFP_KERNEL);
 	if (!stress_array) {
 		kfree(locks);
 		return -ENOMEM;