From: Roel Kluin <roel.kluin@gmail.com>
To: linux-ia64@vger.kernel.org
Subject: [PATCH] acpi-cpufreq: Read buffer overflow?
Date: Fri, 07 Aug 2009 20:12:37 +0000 [thread overview]
Message-ID: <4A7C8AB5.90503@gmail.com> (raw)
If `data->acpi_data.state_count' is 0, we read from data->acpi_data.states[-1].
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
---
Unsure whether this can happen.
diff --git a/arch/ia64/kernel/cpufreq/acpi-cpufreq.c b/arch/ia64/kernel/cpufreq/acpi-cpufreq.c
index 7b43545..7cdd1f6 100644
--- a/arch/ia64/kernel/cpufreq/acpi-cpufreq.c
+++ b/arch/ia64/kernel/cpufreq/acpi-cpufreq.c
@@ -95,7 +95,7 @@ extract_clock (
if (value = data->acpi_data.states[i].status)
return data->acpi_data.states[i].core_frequency;
}
- return data->acpi_data.states[i-1].core_frequency;
+ return i ? data->acpi_data.states[i-1].core_frequency : 0;
}
next reply other threads:[~2009-08-07 20:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-07 20:12 Roel Kluin [this message]
2009-08-07 20:41 ` [PATCH] acpi-cpufreq: Read buffer overflow? Yu, Fenghua
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