[Xen-devel] [PATCH 3/6] add check to cpumask_of()

["Jan Beulich" <JBeulich@xxxxxxxx>]

Just like any other function's CPU inputs, the one here shouldn't go
unchecked.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/include/xen/cpumask.h
+++ b/xen/include/xen/cpumask.h
@@ -304,7 +304,9 @@ extern const unsigned long
 
 static inline const cpumask_t *cpumask_of(unsigned int cpu)
 {
-       const unsigned long *p = cpu_bit_bitmap[1 + cpu % BITS_PER_LONG];
+       const unsigned long *p = cpu_bit_bitmap[1 + cpumask_check(cpu) %
+                                                    BITS_PER_LONG];
+
        return (const cpumask_t *)(p - cpu / BITS_PER_LONG);
 }
 




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