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, 3 deletions

diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index d7d52e259055..0418511f69fe 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -1534,7 +1534,7 @@ static int smaps_rollup_open(struct inode *inode, struct file *file)
 	int ret;
 	struct proc_maps_private *priv;
 
-	priv = kzalloc(sizeof(*priv), GFP_KERNEL_ACCOUNT);
+	priv = kzalloc_obj(*priv, GFP_KERNEL_ACCOUNT);
 	if (!priv)
 		return -ENOMEM;
 
@@ -2981,8 +2981,7 @@ static int pagemap_scan_init_bounce_buffer(struct pagemap_scan_private *p)
 
 	p->vec_buf_len = min_t(size_t, PAGEMAP_WALK_SIZE >> PAGE_SHIFT,
 			       p->arg.vec_len);
-	p->vec_buf = kmalloc_array(p->vec_buf_len, sizeof(*p->vec_buf),
-				   GFP_KERNEL);
+	p->vec_buf = kmalloc_objs(*p->vec_buf, p->vec_buf_len, GFP_KERNEL);
 	if (!p->vec_buf)
 		return -ENOMEM;