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, 1 insertions, 1 deletions

diff --git a/fs/exec.c b/fs/exec.c
index 2e3a6593c6fd..c367e74cf103 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1402,7 +1402,7 @@ static struct linux_binprm *alloc_bprm(int fd, struct filename *filename, int fl
 	if (IS_ERR(file))
 		return ERR_CAST(file);
 
-	bprm = kzalloc(sizeof(*bprm), GFP_KERNEL);
+	bprm = kzalloc_obj(*bprm, GFP_KERNEL);
 	if (!bprm) {
 		do_close_execat(file);
 		return ERR_PTR(-ENOMEM);