linux-kernel - [PATCH][next] selftests: mqueue: initialize array buf before using it

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Date: Thu, 23 May 2024 11:56:03 +0100
From: Colin Ian King <colin.i.king@...il.com>
To: Shuah Khan <shuah@...nel.org>,
	linux-kselftest@...r.kernel.org
Cc: kernel-janitors@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH][next] selftests: mqueue: initialize array buf before using it

Currently array buf is not being initialized and so garbage values
on the stack are being used in the mq_send calls. Initialize the
values in the array to zero.

Cleans up cppcheck warning:
mq_perf_tests.c:334:25: error: Uninitialized variable: buff [uninitvar]

Signed-off-by: Colin Ian King <colin.i.king@...il.com>
---
 tools/testing/selftests/mqueue/mq_perf_tests.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/mqueue/mq_perf_tests.c b/tools/testing/selftests/mqueue/mq_perf_tests.c
index 5c16159d0bcd..bd561dc785d8 100644
--- a/tools/testing/selftests/mqueue/mq_perf_tests.c
+++ b/tools/testing/selftests/mqueue/mq_perf_tests.c
@@ -322,7 +322,7 @@ void *fake_cont_thread(void *arg)
 
 void *cont_thread(void *arg)
 {
-	char buff[MSG_SIZE];
+	char buff[MSG_SIZE] = { };
 	int i, priority;
 
 	for (i = 0; i < num_cpus_to_pin; i++)
-- 
2.39.2