btrfs: fix race between quota disable and quota assign ioctls

[platform/kernel/linux-rpi.git] / lib / test_kasan.c

diff --git a/lib/test_kasan.c b/lib/test_kasan.c
index 8835e07..89f444c 100644 (file)
--- a/lib/test_kasan.c
+++ b/lib/test_kasan.c
@@ -125,6 +125,7 @@ static void kmalloc_oob_right(struct kunit *test)
        ptr = kmalloc(size, GFP_KERNEL);
        KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
 
+       OPTIMIZER_HIDE_VAR(ptr);
        /*
         * An unaligned access past the requested kmalloc size.
         * Only generic KASAN can precisely detect these.
@@ -153,6 +154,7 @@ static void kmalloc_oob_left(struct kunit *test)
        ptr = kmalloc(size, GFP_KERNEL);
        KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
 
+       OPTIMIZER_HIDE_VAR(ptr);
        KUNIT_EXPECT_KASAN_FAIL(test, *ptr = *(ptr - 1));
        kfree(ptr);
 }
@@ -165,6 +167,7 @@ static void kmalloc_node_oob_right(struct kunit *test)
        ptr = kmalloc_node(size, GFP_KERNEL, 0);
        KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
 
+       OPTIMIZER_HIDE_VAR(ptr);
        KUNIT_EXPECT_KASAN_FAIL(test, ptr[0] = ptr[size]);
        kfree(ptr);
 }
@@ -185,6 +188,7 @@ static void kmalloc_pagealloc_oob_right(struct kunit *test)
        ptr = kmalloc(size, GFP_KERNEL);
        KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
 
+       OPTIMIZER_HIDE_VAR(ptr);
        KUNIT_EXPECT_KASAN_FAIL(test, ptr[size + OOB_TAG_OFF] = 0);
 
        kfree(ptr);
@@ -265,6 +269,7 @@ static void kmalloc_large_oob_right(struct kunit *test)
        ptr = kmalloc(size, GFP_KERNEL);
        KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
 
+       OPTIMIZER_HIDE_VAR(ptr);
        KUNIT_EXPECT_KASAN_FAIL(test, ptr[size] = 0);
        kfree(ptr);
 }
@@ -404,6 +409,8 @@ static void kmalloc_oob_16(struct kunit *test)
        ptr2 = kmalloc(sizeof(*ptr2), GFP_KERNEL);
        KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr2);
 
+       OPTIMIZER_HIDE_VAR(ptr1);
+       OPTIMIZER_HIDE_VAR(ptr2);
        KUNIT_EXPECT_KASAN_FAIL(test, *ptr1 = *ptr2);
        kfree(ptr1);
        kfree(ptr2);
@@ -712,6 +719,8 @@ static void ksize_unpoisons_memory(struct kunit *test)
        KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
        real_size = ksize(ptr);
 
+       OPTIMIZER_HIDE_VAR(ptr);
+
        /* This access shouldn't trigger a KASAN report. */
        ptr[size] = 'x';
 
@@ -734,6 +743,7 @@ static void ksize_uaf(struct kunit *test)
        KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
        kfree(ptr);
 
+       OPTIMIZER_HIDE_VAR(ptr);
        KUNIT_EXPECT_KASAN_FAIL(test, ksize(ptr));
        KUNIT_EXPECT_KASAN_FAIL(test, ((volatile char *)ptr)[0]);
        KUNIT_EXPECT_KASAN_FAIL(test, ((volatile char *)ptr)[size]);