linux-kernel - [PATCH AUTOSEL 6.4 08/13] kselftest/arm64: fix a memleak in zt_regs

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Message-Id: <20230908180100.3458151-8-sashal@kernel.org>
Date:   Fri,  8 Sep 2023 14:00:54 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Ding Xiang <dingxiang@...s.chinamobile.com>,
        Will Deacon <will@...nel.org>, Sasha Levin <sashal@...nel.org>,
        catalin.marinas@....com, shuah@...nel.org, broonie@...nel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-kselftest@...r.kernel.org
Subject: [PATCH AUTOSEL 6.4 08/13] kselftest/arm64: fix a memleak in zt_regs_run()

From: Ding Xiang <dingxiang@...s.chinamobile.com>

[ Upstream commit 46862da15e37efedb7d2d21e167f506c0b533772 ]

If memcmp() does not return 0, "zeros" need to be freed to prevent memleak

Signed-off-by: Ding Xiang <dingxiang@...s.chinamobile.com>
Link: https://lore.kernel.org/r/20230815074915.245528-1-dingxiang@cmss.chinamobile.com
Signed-off-by: Will Deacon <will@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 tools/testing/selftests/arm64/signal/testcases/zt_regs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/arm64/signal/testcases/zt_regs.c b/tools/testing/selftests/arm64/signal/testcases/zt_regs.c
index e1eb4d5c027ab..2e384d731618b 100644
--- a/tools/testing/selftests/arm64/signal/testcases/zt_regs.c
+++ b/tools/testing/selftests/arm64/signal/testcases/zt_regs.c
@@ -65,6 +65,7 @@ int zt_regs_run(struct tdescr *td, siginfo_t *si, ucontext_t *uc)
 	if (memcmp(zeros, (char *)zt + ZT_SIG_REGS_OFFSET,
 		   ZT_SIG_REGS_SIZE(zt->nregs)) != 0) {
 		fprintf(stderr, "ZT data invalid\n");
+		free(zeros);
 		return 1;
 	}
 
-- 
2.40.1