From: Emily Ehlert <ehemily@amazon.com>
Date: Thu, 13 Nov 2025 19:16:08 +0000 (+0000)
Subject: tools/power turbostat: Set per_cpu_msr_sum to NULL after free
X-Git-Tag: v6.19-rc1~84^2~12
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2313b97bc0ccedf951ffdd85ffd3629169cfd80b;p=thirdparty%2Fkernel%2Flinux.git

tools/power turbostat: Set per_cpu_msr_sum to NULL after free

Set per_cpu_msr_sum to NULL after freeing it in the error path
of msr_sum_record() to prevent potential use-after-free issues.

Signed-off-by: Emily Ehlert <ehemily@amazon.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 2854b66eb7480..8154d110dd07d 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -6652,6 +6652,7 @@ release_timer:
 	timer_delete(timerid);
 release_msr:
 	free(per_cpu_msr_sum);
+	per_cpu_msr_sum = NULL;
 }
 
 /*