The patch titled
Subject: kasan: test: only do kmalloc_uaf_memset for generic mode
has been removed from the -mm tree. Its filename was
kasan-test-only-do-kmalloc_uaf_memset-for-generic-mode.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Subject: kasan: test: only do kmalloc_uaf_memset for generic mode
kmalloc_uaf_memset() writes to freed memory, which is only safe with the
GENERIC mode (as it uses quarantine). For other modes, this test corrupts
kernel memory, which might result in a crash.
Only enable kmalloc_uaf_memset() for the GENERIC mode.
Link: https://lkml.kernel.org/r/2e1c87b607b1292556cde3cab2764f108542b60c.1628779805.git.andreyknvl@xxxxxxxxx
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Reviewed-by: Marco Elver <elver@xxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/test_kasan.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/lib/test_kasan.c~kasan-test-only-do-kmalloc_uaf_memset-for-generic-mode
+++ a/lib/test_kasan.c
@@ -534,6 +534,12 @@ static void kmalloc_uaf_memset(struct ku
char *ptr;
size_t size = 33;
+ /*
+ * Only generic KASAN uses quarantine, which is required to avoid a
+ * kernel memory corruption this test causes.
+ */
+ KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC);
+
ptr = kmalloc(size, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
_
Patches currently in -mm which might be from andreyknvl@xxxxxxxxx are
