diff mbox series

[v3,2/6] kselftest/arm64: mte: user_mem: rework error handling

Message ID 20220209152240.52788-3-joey.gouly@arm.com (mailing list archive)
State New, archived
Headers show
Series add more test coverage to MTE kselftests | expand

Commit Message

Joey Gouly Feb. 9, 2022, 3:22 p.m. UTC 
Future commits will have multiple iterations of tests in this function,
so make the error handling assume it will pass and then bail out if there
is an error.

Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
---
 .../selftests/arm64/mte/check_user_mem.c      | 22 +++++++++++++------
 1 file changed, 15 insertions(+), 7 deletions(-)

Comments

Catalin Marinas Feb. 9, 2022, 6:40 p.m. UTC | #1 
On Wed, Feb 09, 2022 at 03:22:36PM +0000, Joey Gouly wrote:
> Future commits will have multiple iterations of tests in this function,
> so make the error handling assume it will pass and then bail out if there
> is an error.
> 
> Signed-off-by: Joey Gouly <joey.gouly@arm.com>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Mark Brown <broonie@kernel.org>
> Cc: Shuah Khan <shuah@kernel.org>
> Reviewed-by: Mark Brown <broonie@kernel.org>
> Tested-by: Mark Brown <broonie@kernel.org>
> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
diff mbox series

Patch

diff --git a/tools/testing/selftests/arm64/mte/check_user_mem.c b/tools/testing/selftests/arm64/mte/check_user_mem.c
index 5a5a7e1f5789..2afcc9fb9ae8 100644
--- a/tools/testing/selftests/arm64/mte/check_user_mem.c
+++ b/tools/testing/selftests/arm64/mte/check_user_mem.c
@@ -27,7 +27,7 @@  static int check_usermem_access_fault(int mem_type, int mode, int mapping,
 	size_t len, read_len;
 	void *ptr, *ptr_next;
 
-	err = KSFT_FAIL;
+	err = KSFT_PASS;
 	len = 2 * page_sz;
 	mte_switch_mode(mode, MTE_ALLOW_NON_ZERO_TAG);
 	fd = create_temp_file();
@@ -71,14 +71,22 @@  static int check_usermem_access_fault(int mem_type, int mode, int mapping,
 	 * mode without fault but may not fail in async mode as per the
 	 * implemented MTE userspace support in Arm64 kernel.
 	 */
-	if (mode == MTE_SYNC_ERR &&
-	    !cur_mte_cxt.fault_valid && read_len < len) {
-		err = KSFT_PASS;
-	} else if (mode == MTE_ASYNC_ERR &&
-		   !cur_mte_cxt.fault_valid && read_len == len) {
-		err = KSFT_PASS;
+	if (cur_mte_cxt.fault_valid)
+		goto usermem_acc_err;
+
+	if (mode == MTE_SYNC_ERR && read_len < len) {
+		/* test passed */
+	} else if (mode == MTE_ASYNC_ERR && read_len == len) {
+		/* test passed */
+	} else {
+		goto usermem_acc_err;
 	}
+
+	goto exit;
+
 usermem_acc_err:
+	err = KSFT_FAIL;
+exit:
 	mte_free_memory((void *)ptr, len, mem_type, true);
 	close(fd);
 	return err;