28 lines
748 B
Diff
28 lines
748 B
Diff
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# HG changeset patch
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# User Keir Fraser <keir.fraser@citrix.com>
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# Date 1278578686 -3600
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# Node ID df63728e1680ce7827bd58f6bda453f70ed41ad9
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# Parent a0f0ae5be814f19590d5a59d91ab7183cd1a325f
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x86/cpufreq: check array index before use
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... rather than after.
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Signed-off-by: Jan Beulich <jbeulich@novell.com>
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--- a/xen/arch/x86/acpi/cpufreq/cpufreq.c
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+++ b/xen/arch/x86/acpi/cpufreq/cpufreq.c
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@@ -210,9 +210,11 @@
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if (!cpu_isset(cpu, mask))
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cpu = first_cpu(mask);
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+ if (cpu >= NR_CPUS)
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+ return 0;
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+
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policy = cpufreq_cpu_policy[cpu];
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-
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- if (cpu >= NR_CPUS || !policy || !drv_data[policy->cpu])
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+ if (!policy || !drv_data[policy->cpu])
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return 0;
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switch (drv_data[policy->cpu]->cpu_feature) {
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