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, 3 insertions, 3 deletions

diff --git a/kernel/trace/trace_fprobe.c b/kernel/trace/trace_fprobe.c
index 262c0556e4af..7decd8383d67 100644
--- a/kernel/trace/trace_fprobe.c
+++ b/kernel/trace/trace_fprobe.c
@@ -99,7 +99,7 @@ static struct tracepoint_user *__tracepoint_user_init(const char *name, struct t
 	struct tracepoint_user *tuser __free(tuser_free) = NULL;
 	int ret;
 
-	tuser = kzalloc(sizeof(*tuser), GFP_KERNEL);
+	tuser = kzalloc_obj(*tuser, GFP_KERNEL);
 	if (!tuser)
 		return NULL;
 	tuser->name = kstrdup(name, GFP_KERNEL);
@@ -579,7 +579,7 @@ static struct trace_fprobe *alloc_trace_fprobe(const char *group,
 	struct trace_fprobe *tf __free(free_trace_fprobe) = NULL;
 	int ret = -ENOMEM;
 
-	tf = kzalloc(struct_size(tf, tp.args, nargs), GFP_KERNEL);
+	tf = kzalloc_flex(*tf, tp.args, nargs, GFP_KERNEL);
 	if (!tf)
 		return ERR_PTR(ret);
 
@@ -1403,7 +1403,7 @@ static int trace_fprobe_create_cb(int argc, const char *argv[])
 	struct traceprobe_parse_context *ctx __free(traceprobe_parse_context) = NULL;
 	int ret;
 
-	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+	ctx = kzalloc_obj(*ctx, GFP_KERNEL);
 	if (!ctx)
 		return -ENOMEM;