[PATCH v2 2/4] kselftest/arm64: Log unexpected asynchronous MTE faults

[Mark Brown]

Help people figure out problems by printing a diagnostic when we get an
unexpected asynchronous fault.

Signed-off-by: Mark Brown <broonie at kernel.org>
Reviewed-by: Shuah Khan <skhan at linuxfoundation.org>
---
 tools/testing/selftests/arm64/mte/mte_common_util.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/arm64/mte/mte_common_util.c b/tools/testing/selftests/arm64/mte/mte_common_util.c
index 0328a1e08f65..5327aa958171 100644
--- a/tools/testing/selftests/arm64/mte/mte_common_util.c
+++ b/tools/testing/selftests/arm64/mte/mte_common_util.c
@@ -37,6 +37,10 @@ void mte_default_handler(int signum, siginfo_t *si, void *uc)
 		if (si->si_code == SEGV_MTEAERR) {
 			if (cur_mte_cxt.trig_si_code == si->si_code)
 				cur_mte_cxt.fault_valid = true;
+			else
+				ksft_print_msg("Got unexpected SEGV_MTEAERR at pc=$lx, fault addr=%lx\n",
+					       ((ucontext_t *)uc)->uc_mcontext.pc,
+					       addr);
 			return;
 		}
 		/* Compare the context for precise error */
-- 
2.30.2