blkparse: initialize cpu_map

PATCH New Eric Sandeen 1 participant 1 message Dec 16, 2011

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Eric Sandeen

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2011-12-16 19:25 UTC #0 lore raw

PATCH 9/10 blkparse: initialize cpu_map

We malloc'd cpu_map, and then did:

	cpu_map[CPU_IDX(cpu)] |= (1UL << CPU_BIT(cpu));

... not sure how that ever worked if cpu_map was not initialized!

Signed-off-by Eric Sandeen <[email protected]>

---

blkparse.c +1 -0

index 169d491..96ad666 100644
@@ -1962,6 +1962,7 @@ static int check_cpu_map(struct per_dev_info *pdi)
 	 * create a map of the cpus we have traces for
 	 */
 	cpu_map = malloc(pdi->cpu_map_max / sizeof(long));
+	memset(cpu_map, 0, sizeof(*cpu_map));
 	n = rb_first(&rb_sort_root);
 	while (n) {
 		__t = rb_entry(n, struct trace, rb_node);