kselftest/arm64: fix a memleak in zt_regs_run()

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

Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20230815074915.245528-1-dingxiang@cmss.chinamobile.com
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/tools/testing/selftests/arm64/signal/testcases/zt_regs.c b/tools/testing/selftests/arm64/signal/testcases/zt_regs.c
index e1eb4d5..2e384d7 100644 (file)
--- 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;
        }