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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
kernel/kcsan/kcsan_test.c
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@@ -168,7 +168,7 @@ static bool __report_matches(const struct expect_report *r)
if (!report_available())
return false;
expect = kmalloc(sizeof(observed.lines), GFP_KERNEL);
expect = kmalloc_obj(observed.lines, GFP_KERNEL);
if (WARN_ON(!expect))
return false;
@@ -1538,7 +1538,7 @@ static int test_init(struct kunit *test)
if (WARN_ON(!nthreads))
goto err;
threads = kcalloc(nthreads + 1, sizeof(struct task_struct *), GFP_KERNEL);
threads = kzalloc_objs(struct task_struct *, nthreads + 1, GFP_KERNEL);
if (WARN_ON(!threads))
goto err;