linux-kernel - [PATCH] Fix uninitialized local variable "covered" in i386 acpi-cpufreq driver

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Date:	Thu, 26 Jul 2007 16:46:30 -0700
From:	Fenghua Yu <fenghua.yu@...el.com>
To:	linux-kernel@...r.kernel.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	venkatesh.pallipadi@...el.com
Subject: [PATCH] Fix uninitialized local variable "covered" in i386 acpi-cpufreq driver

The local variable "covered" is used without initialization in i386 acpi-cpufreq
driver. The initial value of covered should be 0. The bug will cause memory leak
when hit. The following patch fixes this bug.

Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>

---

 arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
index 6f846be..bfb4959 100644
--- a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -511,7 +511,7 @@ acpi_cpufreq_guess_freq(struct acpi_cpufreq_data *data, unsigned int cpu)
 static int acpi_cpufreq_early_init(void)
 {
 	struct acpi_processor_performance *data;
-	cpumask_t covered;
+	cpumask_t covered=0;
 	unsigned int i, j;
 
 	dprintk("acpi_cpufreq_early_init\n");
-
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