linux-kernel - [PATCH AUTOSEL 5.4 20/80] selftests/x86/fsgsbase: Reap a forgotten child

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Message-Id: <20201026235516.1025100-20-sashal@kernel.org>
Date:   Mon, 26 Oct 2020 19:54:16 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Andy Lutomirski <luto@...nel.org>, Ingo Molnar <mingo@...nel.org>,
        Sasha Levin <sashal@...nel.org>,
        linux-kselftest@...r.kernel.org
Subject: [PATCH AUTOSEL 5.4 20/80] selftests/x86/fsgsbase: Reap a forgotten child

From: Andy Lutomirski <luto@...nel.org>

[ Upstream commit ab2dd173330a3f07142e68cd65682205036cd00f ]

The ptrace() test forgot to reap its child.  Reap it.

Signed-off-by: Andy Lutomirski <luto@...nel.org>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Link: https://lore.kernel.org/r/e7700a503f30e79ab35a63103938a19893dbeff2.1598461151.git.luto@kernel.org
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 tools/testing/selftests/x86/fsgsbase.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/testing/selftests/x86/fsgsbase.c b/tools/testing/selftests/x86/fsgsbase.c
index 15a329da59fa3..5f3aea210e018 100644
--- a/tools/testing/selftests/x86/fsgsbase.c
+++ b/tools/testing/selftests/x86/fsgsbase.c
@@ -499,6 +499,9 @@ static void test_ptrace_write_gsbase(void)
 
 END:
 	ptrace(PTRACE_CONT, child, NULL, NULL);
+	wait(&status);
+	if (!WIFEXITED(status))
+		printf("[WARN]\tChild didn't exit cleanly.\n");
 }
 
 int main()
-- 
2.25.1