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, 2 insertions, 2 deletions

diff --git a/kernel/kcsan/kcsan_test.c b/kernel/kcsan/kcsan_test.c
index 8ef8167be745..edb062fb43b4 100644
--- a/kernel/kcsan/kcsan_test.c
+++ b/kernel/kcsan/kcsan_test.c
@@ -168,7 +168,7 @@ static bool __report_matches(const struct expect_report *r)
 	if (!report_available())
 		return false;
 
-	expect = kmalloc(sizeof(observed.lines), GFP_KERNEL);
+	expect = kmalloc_obj(observed.lines, GFP_KERNEL);
 	if (WARN_ON(!expect))
 		return false;
 
@@ -1538,7 +1538,7 @@ static int test_init(struct kunit *test)
 	if (WARN_ON(!nthreads))
 		goto err;
 
-	threads = kcalloc(nthreads + 1, sizeof(struct task_struct *), GFP_KERNEL);
+	threads = kzalloc_objs(struct task_struct *, nthreads + 1, GFP_KERNEL);
 	if (WARN_ON(!threads))
 		goto err;