linux-kernel - [PATCH] power: cpupower: utils: Add malloc return value check

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Date:   Fri, 14 Oct 2022 12:29:11 +0800
From:   Li kunyu <kunyu@...china.com>
To:     shuah@...nel.org
Cc:     trenn@...e.com, ray.huang@....com, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Li kunyu <kunyu@...china.com>
Subject: [PATCH] power: cpupower: utils: Add malloc return value check

Add the check and judgment statement of malloc return value.

Signed-off-by: Li kunyu <kunyu@...china.com>
---
 tools/power/cpupower/utils/helpers/misc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/power/cpupower/utils/helpers/misc.c b/tools/power/cpupower/utils/helpers/misc.c
index 9547b29254a7..eafdbd6d760c 100644
--- a/tools/power/cpupower/utils/helpers/misc.c
+++ b/tools/power/cpupower/utils/helpers/misc.c
@@ -139,6 +139,8 @@ void print_online_cpus(void)
 
 	str_len = online_cpus->size * 5;
 	online_cpus_str = (void *)malloc(sizeof(char) * str_len);
+	if (unlikely(!online_cpus_str))
+		return;
 
 	if (!bitmask_isallclear(online_cpus)) {
 		bitmask_displaylist(online_cpus_str, str_len, online_cpus);
@@ -157,6 +159,8 @@ void print_offline_cpus(void)
 
 	str_len = offline_cpus->size * 5;
 	offline_cpus_str = (void *)malloc(sizeof(char) * str_len);
+	if (unlikely(!offline_cpus_str))
+		return;
 
 	if (!bitmask_isallclear(offline_cpus)) {
 		bitmask_displaylist(offline_cpus_str, str_len, offline_cpus);
-- 
2.18.2