The patch titled
Subject: kasan: fix a2 allocation and remove explicit cast in atomic tests
has been added to the -mm mm-unstable branch. Its filename is
kasan-fix-a2-allocation-and-remove-explicit-cast-in-atomic-tests.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kasan-fix-a2-allocation-and-remove-explicit-cast-in-atomic-tests.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Paul Heidekrüger <paul.heidekrueger@xxxxxx>
Subject: kasan: fix a2 allocation and remove explicit cast in atomic tests
Date: Sat, 24 Feb 2024 10:54:14 +0000
Address the additional feedback since 4e76c8cc3378 kasan: add atomic tests
(""kasan: add atomic tests") by removing an explicit cast and fixing the
size as well as the check of the allocation of `a2`.
Link: https://lkml.kernel.org/r/20240224105414.211995-1-paul.heidekrueger@xxxxxx
Link: https://lore.kernel.org/all/20240131210041.686657-1-paul.heidekrueger@xxxxxx/T/#u
Fixes: 4e76c8cc3378a20923965e3345f40f6b8ae0bdba
Signed-off-by: Paul Heidekrüger <paul.heidekrueger@xxxxxx>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=214055
Reviewed-by: Marco Elver <elver@xxxxxxxxxx>
Tested-by: Marco Elver <elver@xxxxxxxxxx>
Acked-by: Mark Rutland <mark.rutland@xxxxxxx>
Reviewed-by: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/kasan/kasan_test.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/mm/kasan/kasan_test.c~kasan-fix-a2-allocation-and-remove-explicit-cast-in-atomic-tests
+++ a/mm/kasan/kasan_test.c
@@ -700,7 +700,7 @@ static void kmalloc_uaf3(struct kunit *t
static void kasan_atomics_helper(struct kunit *test, void *unsafe, void *safe)
{
- int *i_unsafe = (int *)unsafe;
+ int *i_unsafe = unsafe;
KUNIT_EXPECT_KASAN_FAIL(test, READ_ONCE(*i_unsafe));
KUNIT_EXPECT_KASAN_FAIL(test, WRITE_ONCE(*i_unsafe, 42));
@@ -766,8 +766,8 @@ static void kasan_atomics(struct kunit *
*/
a1 = kzalloc(48, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, a1);
- a2 = kzalloc(sizeof(int), GFP_KERNEL);
- KUNIT_ASSERT_NOT_ERR_OR_NULL(test, a1);
+ a2 = kzalloc(sizeof(atomic_long_t), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, a2);
/* Use atomics to access the redzone. */
kasan_atomics_helper(test, a1 + 48, a2);
_
Patches currently in -mm which might be from paul.heidekrueger@xxxxxx are
kasan-fix-a2-allocation-and-remove-explicit-cast-in-atomic-tests.patch
