linux-kernel - [PATCH] tools/power turbostat: fix leak of file descriptor on error return path

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Message-Id: <20190408090044.5712-1-colin.king@canonical.com>
Date:   Mon,  8 Apr 2019 10:00:44 +0100
From:   Colin King <colin.king@...onical.com>
To:     Len Brown <lenb@...nel.org>, linux-pm@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] tools/power turbostat: fix leak of file descriptor on error return path

From: Colin Ian King <colin.king@...onical.com>

Currently the error return path does not close the file fp and leaks
a file descriptor. Fix this by closing the file.

Fixes: 5ea7647b333f ("tools/power turbostat: Warn on bad ACPI LPIT data")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 tools/power/x86/turbostat/turbostat.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index c7727be9719f..4e6e3f194d2c 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -2950,6 +2950,7 @@ int snapshot_sys_lpi_us(void)
 	if (retval != 1) {
 		fprintf(stderr, "Disabling Low Power Idle System output\n");
 		BIC_NOT_PRESENT(BIC_SYS_LPI);
+		fclose(fp);
 		return -1;
 	}
 	fclose(fp);
-- 
2.20.1