The patch titled
Subject: kasan: check kasan_vmalloc_enabled in vmalloc tests
has been added to the -mm mm-unstable branch. Its filename is
kasan-check-kasan_vmalloc_enabled-in-vmalloc-tests.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kasan-check-kasan_vmalloc_enabled-in-vmalloc-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: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Subject: kasan: check kasan_vmalloc_enabled in vmalloc tests
Date: Thu, 21 Dec 2023 21:04:50 +0100
Check that vmalloc poisoning is not disabled via command line when running
the vmalloc-related KASAN tests. Skip the tests otherwise.
Link: https://lkml.kernel.org/r/954456e50ac98519910c3e24a479a18eae62f8dd.1703188911.git.andreyknvl@xxxxxxxxxx
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/kasan/hw_tags.c | 1 +
mm/kasan/kasan.h | 5 +++++
mm/kasan/kasan_test.c | 11 ++++++++++-
3 files changed, 16 insertions(+), 1 deletion(-)
--- a/mm/kasan/hw_tags.c~kasan-check-kasan_vmalloc_enabled-in-vmalloc-tests
+++ a/mm/kasan/hw_tags.c
@@ -62,6 +62,7 @@ DEFINE_STATIC_KEY_TRUE(kasan_flag_vmallo
#else
DEFINE_STATIC_KEY_FALSE(kasan_flag_vmalloc);
#endif
+EXPORT_SYMBOL_GPL(kasan_flag_vmalloc);
#define PAGE_ALLOC_SAMPLE_DEFAULT 1
#define PAGE_ALLOC_SAMPLE_ORDER_DEFAULT 3
--- a/mm/kasan/kasan.h~kasan-check-kasan_vmalloc_enabled-in-vmalloc-tests
+++ a/mm/kasan/kasan.h
@@ -83,6 +83,11 @@ static inline bool kasan_sample_page_all
#else /* CONFIG_KASAN_HW_TAGS */
+static inline bool kasan_vmalloc_enabled(void)
+{
+ return IS_ENABLED(CONFIG_KASAN_VMALLOC);
+}
+
static inline bool kasan_async_fault_possible(void)
{
return false;
--- a/mm/kasan/kasan_test.c~kasan-check-kasan_vmalloc_enabled-in-vmalloc-tests
+++ a/mm/kasan/kasan_test.c
@@ -1552,6 +1552,9 @@ static void vmalloc_helpers_tags(struct
KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_VMALLOC);
+ if (!kasan_vmalloc_enabled())
+ kunit_skip(test, "Test requires kasan.vmalloc=on");
+
ptr = vmalloc(PAGE_SIZE);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
@@ -1586,6 +1589,9 @@ static void vmalloc_oob(struct kunit *te
KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_VMALLOC);
+ if (!kasan_vmalloc_enabled())
+ kunit_skip(test, "Test requires kasan.vmalloc=on");
+
v_ptr = vmalloc(size);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, v_ptr);
@@ -1639,6 +1645,9 @@ static void vmap_tags(struct kunit *test
KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_VMALLOC);
+ if (!kasan_vmalloc_enabled())
+ kunit_skip(test, "Test requires kasan.vmalloc=on");
+
p_page = alloc_pages(GFP_KERNEL, 1);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, p_page);
p_ptr = page_address(p_page);
@@ -1757,7 +1766,7 @@ static void match_all_not_assigned(struc
free_pages((unsigned long)ptr, order);
}
- if (!IS_ENABLED(CONFIG_KASAN_VMALLOC))
+ if (!kasan_vmalloc_enabled())
return;
for (i = 0; i < 256; i++) {
_
Patches currently in -mm which might be from andreyknvl@xxxxxxxxxx are
kasan-rename-kasan_slab_free_mempool-to-kasan_mempool_poison_object.patch
kasan-move-kasan_mempool_poison_object.patch
kasan-document-kasan_mempool_poison_object.patch
kasan-add-return-value-for-kasan_mempool_poison_object.patch
kasan-introduce-kasan_mempool_unpoison_object.patch
kasan-introduce-kasan_mempool_poison_pages.patch
kasan-introduce-kasan_mempool_unpoison_pages.patch
kasan-clean-up-__kasan_mempool_poison_object.patch
kasan-save-free-stack-traces-for-slab-mempools.patch
kasan-clean-up-and-rename-____kasan_kmalloc.patch
kasan-introduce-poison_kmalloc_large_redzone.patch
kasan-save-alloc-stack-traces-for-mempool.patch
mempool-skip-slub_debug-poisoning-when-kasan-is-enabled.patch
mempool-use-new-mempool-kasan-hooks.patch
mempool-introduce-mempool_use_prealloc_only.patch
kasan-add-mempool-tests.patch
kasan-rename-pagealloc-tests.patch
kasan-reorder-tests.patch
kasan-rename-and-document-kasan_unpoison_object_data.patch
skbuff-use-mempool-kasan-hooks.patch
io_uring-use-mempool-kasan-hook.patch
lib-stackdepot-add-printk_deferred_enter-exit-guards.patch
kasan-handle-concurrent-kasan_record_aux_stack-calls.patch
kasan-memset-free-track-in-qlink_free.patch
lib-stackdepot-fix-comment-in-include-linux-stackdepoth.patch
kasan-arm64-improve-comments-for-kasan_shadow_start-end.patch
mm-kasan-use-kasan_tag_kernel-instead-of-0xff.patch
kasan-improve-kasan_non_canonical_hook.patch
kasan-clean-up-kasan_requires_meta.patch
kasan-update-kasan_poison-documentation-comment.patch
kasan-clean-up-is_kfence_address-checks.patch
kasan-respect-config_kasan_vmalloc-for-kasan_flag_vmalloc.patch
kasan-check-kasan_vmalloc_enabled-in-vmalloc-tests.patch
kasan-export-kasan_poison-as-gpl.patch
kasan-remove-slub-checks-for-page_alloc-fallbacks-in-tests.patch
kasan-speed-up-match_all_mem_tag-test-for-sw_tags.patch
