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/seccomp.c b/kernel/seccomp.c
index 25f62867a16d..b2297243071d 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -693,7 +693,7 @@ static struct seccomp_filter *seccomp_prepare_filter(struct sock_fprog *fprog)
 		return ERR_PTR(-EACCES);
 
 	/* Allocate a new seccomp_filter */
-	sfilter = kzalloc(sizeof(*sfilter), GFP_KERNEL | __GFP_NOWARN);
+	sfilter = kzalloc_obj(*sfilter, GFP_KERNEL | __GFP_NOWARN);
 	if (!sfilter)
 		return ERR_PTR(-ENOMEM);
 
@@ -1893,7 +1893,7 @@ static struct file *init_listener(struct seccomp_filter *filter)
 	struct file *ret;
 
 	ret = ERR_PTR(-ENOMEM);
-	filter->notif = kzalloc(sizeof(*(filter->notif)), GFP_KERNEL);
+	filter->notif = kzalloc_obj(*(filter->notif), GFP_KERNEL);
 	if (!filter->notif)
 		goto out;