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, 5 insertions, 5 deletions

diff --git a/kernel/trace/pid_list.c b/kernel/trace/pid_list.c
index dbee72d69d0a..6d12855b0277 100644
--- a/kernel/trace/pid_list.c
+++ b/kernel/trace/pid_list.c
@@ -359,7 +359,7 @@ static void pid_list_refill_irq(struct irq_work *iwork)
 	while (upper_count-- > 0) {
 		union upper_chunk *chunk;
 
-		chunk = kzalloc(sizeof(*chunk), GFP_NOWAIT);
+		chunk = kzalloc_obj(*chunk, GFP_NOWAIT);
 		if (!chunk)
 			break;
 		*upper_next = chunk;
@@ -370,7 +370,7 @@ static void pid_list_refill_irq(struct irq_work *iwork)
 	while (lower_count-- > 0) {
 		union lower_chunk *chunk;
 
-		chunk = kzalloc(sizeof(*chunk), GFP_NOWAIT);
+		chunk = kzalloc_obj(*chunk, GFP_NOWAIT);
 		if (!chunk)
 			break;
 		*lower_next = chunk;
@@ -423,7 +423,7 @@ struct trace_pid_list *trace_pid_list_alloc(void)
 	/* According to linux/thread.h, pids can be no bigger that 30 bits */
 	WARN_ON_ONCE(init_pid_ns.pid_max > (1 << 30));
 
-	pid_list = kzalloc(sizeof(*pid_list), GFP_KERNEL);
+	pid_list = kzalloc_obj(*pid_list, GFP_KERNEL);
 	if (!pid_list)
 		return NULL;
 
@@ -435,7 +435,7 @@ struct trace_pid_list *trace_pid_list_alloc(void)
 	for (i = 0; i < CHUNK_ALLOC; i++) {
 		union upper_chunk *chunk;
 
-		chunk = kzalloc(sizeof(*chunk), GFP_KERNEL);
+		chunk = kzalloc_obj(*chunk, GFP_KERNEL);
 		if (!chunk)
 			break;
 		chunk->next = pid_list->upper_list;
@@ -446,7 +446,7 @@ struct trace_pid_list *trace_pid_list_alloc(void)
 	for (i = 0; i < CHUNK_ALLOC; i++) {
 		union lower_chunk *chunk;
 
-		chunk = kzalloc(sizeof(*chunk), GFP_KERNEL);
+		chunk = kzalloc_obj(*chunk, GFP_KERNEL);
 		if (!chunk)
 			break;
 		chunk->next = pid_list->lower_list;