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treewide: Replace kmalloc with kmalloc_obj for non-scalar types

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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>
This commit is contained in:
Kees Cook
2026-02-20 23:49:23 -08:00
parent d39a1d7486
commit 69050f8d6d
8016 changed files with 20055 additions and 20913 deletions
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4
drivers/dma/idxd/cdev.c
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@@ -232,7 +232,7 @@ static int idxd_cdev_open(struct inode *inode, struct file *filp)
dev_dbg(dev, "%s called: %d\n", __func__, idxd_wq_refcount(wq));
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
ctx = kzalloc_obj(*ctx, GFP_KERNEL);
if (!ctx)
return -ENOMEM;
@@ -538,7 +538,7 @@ int idxd_wq_add_cdev(struct idxd_wq *wq)
struct idxd_cdev_context *cdev_ctx;
int rc, minor;
idxd_cdev = kzalloc(sizeof(*idxd_cdev), GFP_KERNEL);
idxd_cdev = kzalloc_obj(*idxd_cdev, GFP_KERNEL);
if (!idxd_cdev)
return -ENOMEM;