diff options
Diffstat (limited to 'kernel/kcsan')
| -rw-r--r-- | kernel/kcsan/debugfs.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/kernel/kcsan/debugfs.c b/kernel/kcsan/debugfs.c index 72ee188ebc54..1a08664a7fab 100644 --- a/kernel/kcsan/debugfs.c +++ b/kernel/kcsan/debugfs.c @@ -110,6 +110,7 @@ static noinline void microbenchmark(unsigned long iters) */ static long test_dummy; static long test_flags; +static long test_scoped; static noinline void test_thread(unsigned long iters) { const long CHANGE_BITS = 0xff00ff00ff00ff00L; @@ -120,7 +121,8 @@ static noinline void test_thread(unsigned long iters) memset(¤t->kcsan_ctx, 0, sizeof(current->kcsan_ctx)); pr_info("KCSAN: %s begin | iters: %lu\n", __func__, iters); - pr_info("test_dummy@%px, test_flags@%px\n", &test_dummy, &test_flags); + pr_info("test_dummy@%px, test_flags@%px, test_scoped@%px,\n", + &test_dummy, &test_flags, &test_scoped); cycles = get_cycles(); while (iters--) { @@ -141,6 +143,18 @@ static noinline void test_thread(unsigned long iters) test_flags ^= CHANGE_BITS; /* generate value-change */ __kcsan_check_write(&test_flags, sizeof(test_flags)); + + BUG_ON(current->kcsan_ctx.scoped_accesses.prev); + { + /* Should generate reports anywhere in this block. */ + ASSERT_EXCLUSIVE_WRITER_SCOPED(test_scoped); + ASSERT_EXCLUSIVE_ACCESS_SCOPED(test_scoped); + BUG_ON(!current->kcsan_ctx.scoped_accesses.prev); + /* Unrelated accesses. */ + __kcsan_check_access(&cycles, sizeof(cycles), 0); + __kcsan_check_access(&cycles, sizeof(cycles), KCSAN_ACCESS_ATOMIC); + } + BUG_ON(current->kcsan_ctx.scoped_accesses.prev); } cycles = get_cycles() - cycles; |