From 69050f8d6d075dc01af7a5f2f550a8067510366f Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 20 Feb 2026 23:49:23 -0800 Subject: 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 --- ipc/mqueue.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'ipc/mqueue.c') diff --git a/ipc/mqueue.c b/ipc/mqueue.c index bb7c9e5d2b90..a90aa6803f1b 100644 --- a/ipc/mqueue.c +++ b/ipc/mqueue.c @@ -210,7 +210,7 @@ static int msg_insert(struct msg_msg *msg, struct mqueue_inode_info *info) leaf = info->node_cache; info->node_cache = NULL; } else { - leaf = kmalloc(sizeof(*leaf), GFP_ATOMIC); + leaf = kmalloc_obj(*leaf, GFP_ATOMIC); if (!leaf) return -ENOMEM; INIT_LIST_HEAD(&leaf->msg_list); @@ -449,7 +449,7 @@ static int mqueue_init_fs_context(struct fs_context *fc) { struct mqueue_fs_context *ctx; - ctx = kzalloc(sizeof(struct mqueue_fs_context), GFP_KERNEL); + ctx = kzalloc_obj(struct mqueue_fs_context, GFP_KERNEL); if (!ctx) return -ENOMEM; @@ -1088,7 +1088,7 @@ static int do_mq_timedsend(mqd_t mqdes, const char __user *u_msg_ptr, * fall back to that if necessary. */ if (!info->node_cache) - new_leaf = kmalloc(sizeof(*new_leaf), GFP_KERNEL); + new_leaf = kmalloc_obj(*new_leaf, GFP_KERNEL); spin_lock(&info->lock); @@ -1181,7 +1181,7 @@ static int do_mq_timedreceive(mqd_t mqdes, char __user *u_msg_ptr, * fall back to that if necessary. */ if (!info->node_cache) - new_leaf = kmalloc(sizeof(*new_leaf), GFP_KERNEL); + new_leaf = kmalloc_obj(*new_leaf, GFP_KERNEL); spin_lock(&info->lock); -- cgit v1.2.3