From: Emily Ehlert <ehemily@amazon.de>
To: <lenb@kernel.org>
Cc: <linux-pm@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Emily Ehlert <ehemily@amazon.com>
Subject: [PATCH 1/2] tools/power/turbostat: Set per_cpu_msr_sum to NULL after free
Date: Thu, 13 Nov 2025 19:16:08 +0000 [thread overview]
Message-ID: <20251113191609.28574-1-ehemily@amazon.de> (raw)
From: Emily Ehlert <ehemily@amazon.com>
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>
---
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 72a280e7a9d5..9a2be201a3a6 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -6673,6 +6673,7 @@ void msr_sum_record(void)
timer_delete(timerid);
release_msr:
free(per_cpu_msr_sum);
+ per_cpu_msr_sum = NULL;
}
/*
--
2.47.3
Amazon Web Services Development Center Germany GmbH
Tamara-Danz-Str. 13
10243 Berlin
Geschaeftsfuehrung: Christian Schlaeger, Christof Hellmis
Eingetragen am Amtsgericht Charlottenburg unter HRB 257764 B
Sitz: Berlin
Ust-ID: DE 365 538 597
next reply other threads:[~2025-11-13 19:16 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-13 19:16 Emily Ehlert [this message]
2025-11-13 19:16 ` [PATCH 2/2] tools/power/turbostat: Fix division by zero when TDP calculation fails Emily Ehlert
2025-11-25 18:13 ` Len Brown
2025-11-28 13:59 ` Ehlert, Emily
2025-11-30 5:27 ` Len Brown
2025-12-01 8:55 ` Ehlert, Emily
2025-12-01 17:07 ` Len Brown
2025-12-01 19:14 ` Len Brown
2025-12-02 9:09 ` Ehlert, Emily
2025-12-02 16:20 ` Len Brown
2025-11-25 18:06 ` [PATCH 1/2] tools/power/turbostat: Set per_cpu_msr_sum to NULL after free Len Brown
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