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D48331.id148800.diff
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diff --git a/sys/x86/x86/tsc.c b/sys/x86/x86/tsc.c
--- a/sys/x86/x86/tsc.c
+++ b/sys/x86/x86/tsc.c
@@ -212,10 +212,18 @@
memcpy(p, regs, sizeof(regs));
p += sizeof(regs);
}
+
+ /*
+ * Begin the search at &brand[5]; we currently expect no less
+ * than four digits for the frequency and either M/G/T modifier
+ * beforehand -- let's avoid getting thrown off by potential
+ * garbage.
+ */
p = NULL;
- for (i = 0; i < sizeof(brand) - 1; i++)
+ for (i = 5; i < sizeof(brand) - 1; i++)
if (brand[i] == 'H' && brand[i + 1] == 'z')
p = brand + i;
+
if (p != NULL) {
p -= 5;
switch (p[4]) {
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D48331.id148800.diff (632 B)
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D48331: x86: tsc: more resilient cpuid parsing
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