diff -urN irqbalance.orig/cpuinfo.c irqbalance/cpuinfo.c
--- irqbalance.orig/cpuinfo.c	2006-04-11 12:06:42.000000000 -0500
+++ irqbalance/cpuinfo.c	2006-04-11 13:02:51.000000000 -0500
@@ -37,16 +37,25 @@
 	assert(file != NULL);
 	while (!feof(file) && cpucount < MAX_CPU) {
 		fgets(linebuffer, 1024, file);
-		if (strstr(linebuffer,"Physical processor ID\t:"))
+		if (strstr(linebuffer,"Physical processor ID\t:")) {
 			sscanf(linebuffer,"Physical processor ID\t: %ui", &cpunumber[cpucount]);
+			assert(cpunumber[cpucount] < MAX_CPU);
+		}
+
 		else if (strstr(linebuffer,"processor\t:"))
 			cpucount++;
-		else if (strstr(linebuffer,"Number of siblings\t:"))
+		else if (strstr(linebuffer,"Number of siblings\t:")) {
 			sscanf(linebuffer,"Number of siblings \t: %i", &siblings[cpucount]);
-		else if (strstr(linebuffer,"siblings\t:"))
+			assert(siblings[cpucount] < MAX_CPU);
+		}
+		else if (strstr(linebuffer,"siblings\t:")) {
 			sscanf(linebuffer,"siblings\t: %i", &siblings[cpucount]);
-		else if (strstr(linebuffer,"physical id\t:"))
+			assert(siblings[cpucount] < MAX_CPU);
+		}
+		else if (strstr(linebuffer,"physical id\t:")) {
 			sscanf(linebuffer,"physical id\t: %ui", &cpunumber[cpucount]);
+			assert(cpunumber[cpucount] < MAX_CPU);
+		}
 		else if (strstr(linebuffer,"GenuineIntel")) {
 			if (!machineneedsbalance)
 				machineneedsbalance = 1;
Files irqbalance.orig/irqbalance and irqbalance/irqbalance differ
diff -urN irqbalance.orig/procinterrupts.c irqbalance/procinterrupts.c
--- irqbalance.orig/procinterrupts.c	2006-04-11 12:06:42.000000000 -0500
+++ irqbalance/procinterrupts.c	2006-04-11 13:03:03.000000000 -0500
@@ -102,6 +102,7 @@
 				ret = sscanf(word,"%i",&irqnumber);
 				if (!ret)  /* non numeric end stuff */
 					irqnumber = MAX_INTERRUPTS-1; 
+				assert(irqnumber < MAX_INTERRUPTS);
 			/* then N columns of counts, where N is the number of cpu's */
 			} else if (column <= cpucount) {
 				sscanf(word,"%lli",&count);