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/ipc/shm.c b/ipc/shm.c
index e8c7d1924c50..b94248570304 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -722,7 +722,7 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
 			ns->shm_tot + numpages > ns->shm_ctlall)
 		return -ENOSPC;
 
-	shp = kmalloc(sizeof(*shp), GFP_KERNEL_ACCOUNT);
+	shp = kmalloc_obj(*shp, GFP_KERNEL_ACCOUNT);
 	if (unlikely(!shp))
 		return -ENOMEM;
 
@@ -1618,7 +1618,7 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg,
 	rcu_read_unlock();
 
 	err = -ENOMEM;
-	sfd = kzalloc(sizeof(*sfd), GFP_KERNEL);
+	sfd = kzalloc_obj(*sfd, GFP_KERNEL);
 	if (!sfd) {
 		fput(base);
 		goto out_nattch;