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>

2 files changed, 4 insertions, 4 deletions

diff --git a/lib/crypto/mpi/mpih-mul.c b/lib/crypto/mpi/mpih-mul.c
index a93647564054..9cd0843e9d36 100644
--- a/lib/crypto/mpi/mpih-mul.c
+++ b/lib/crypto/mpi/mpih-mul.c
@@ -372,7 +372,7 @@ mpihelp_mul_karatsuba_case(mpi_ptr_t prodp,
 				return -ENOMEM;
 		} else {
 			if (!ctx->next) {
-				ctx->next = kzalloc(sizeof *ctx, GFP_KERNEL);
+				ctx->next = kzalloc_obj(*ctx, GFP_KERNEL);
 				if (!ctx->next)
 					return -ENOMEM;
 			}
diff --git a/lib/crypto/mpi/mpiutil.c b/lib/crypto/mpi/mpiutil.c
index 7f2db830f404..4999f756f50e 100644
--- a/lib/crypto/mpi/mpiutil.c
+++ b/lib/crypto/mpi/mpiutil.c
@@ -33,7 +33,7 @@ MPI mpi_alloc(unsigned nlimbs)
 {
 	MPI a;
 
-	a = kmalloc(sizeof *a, GFP_KERNEL);
+	a = kmalloc_obj(*a, GFP_KERNEL);
 	if (!a)
 		return a;
 
@@ -93,14 +93,14 @@ int mpi_resize(MPI a, unsigned nlimbs)
 		return 0;	/* no need to do it */
 
 	if (a->d) {
-		p = kcalloc(nlimbs, sizeof(mpi_limb_t), GFP_KERNEL);
+		p = kzalloc_objs(mpi_limb_t, nlimbs, GFP_KERNEL);
 		if (!p)
 			return -ENOMEM;
 		memcpy(p, a->d, a->alloced * sizeof(mpi_limb_t));
 		kfree_sensitive(a->d);
 		a->d = p;
 	} else {
-		a->d = kcalloc(nlimbs, sizeof(mpi_limb_t), GFP_KERNEL);
+		a->d = kzalloc_objs(mpi_limb_t, nlimbs, GFP_KERNEL);
 		if (!a->d)
 			return -ENOMEM;
 	}