linux-kernel - [PATCH] tools/thermal: Fix common realloc mistake

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <20241108044700.37633-1-zhangjiao2@cmss.chinamobile.com>
Date: Fri,  8 Nov 2024 12:47:00 +0800
From: zhangjiao2 <zhangjiao2@...s.chinamobile.com>
To: rafael@...nel.org
Cc: daniel.lezcano@...aro.org,
	rui.zhang@...el.com,
	lukasz.luba@....com,
	linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	zhang jiao <zhangjiao2@...s.chinamobile.com>
Subject: [PATCH] tools/thermal: Fix common realloc mistake

From: zhang jiao <zhangjiao2@...s.chinamobile.com>

Do not set thermometer->tz NULL when realloc failed.

Signed-off-by: zhang jiao <zhangjiao2@...s.chinamobile.com>
---
 tools/thermal/thermometer/thermometer.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/thermal/thermometer/thermometer.c b/tools/thermal/thermometer/thermometer.c
index 1a87a0a77f9f..e08291a97fd8 100644
--- a/tools/thermal/thermometer/thermometer.c
+++ b/tools/thermal/thermometer/thermometer.c
@@ -259,6 +259,7 @@ static int thermometer_add_tz(const char *path, const char *name, int polling,
 {
 	int fd;
 	char tz_path[PATH_MAX];
+	void *tmp;
 
 	sprintf(tz_path, CLASS_THERMAL"/%s/temp", path);
 
@@ -268,12 +269,13 @@ static int thermometer_add_tz(const char *path, const char *name, int polling,
 		return -1;
 	}
 
-	thermometer->tz = realloc(thermometer->tz,
+	tmp = realloc(thermometer->tz,
 				  sizeof(*thermometer->tz) * (thermometer->nr_tz + 1));
-	if (!thermometer->tz) {
+	if (!tmp) {
 		ERROR("Failed to allocate thermometer->tz\n");
 		return -1;
 	}
+	thermometer->tz = tmp;
 
 	thermometer->tz[thermometer->nr_tz].fd_temp = fd;
 	thermometer->tz[thermometer->nr_tz].name = strdup(name);
-- 
2.33.0