Fix small chunks going into very large zones

writegsqword · web-flow · commit 69a1a44c430b · 2025-11-21T19:21:08.000-08:00
diff --git a/src/iso_alloc.c b/src/iso_alloc.c
@@ -813,6 +813,9 @@ INTERNAL_HIDDEN iso_alloc_zone_t *is_zone_usable(iso_alloc_zone_t *zone, size_t
      * chunks smaller than ZONE_1024 */
     if(size > ZONE_1024 && zone->chunk_size >= (size << WASTED_SZ_MULTIPLIER_SHIFT)) {
         return NULL;
+    } 
+    if(size <= ZONE_1024 && zone->chunk_size > ZONE_1024) {
+        return NULL;
     }
 
     if(zone->next_free_bit_slot != BAD_BIT_SLOT) {

Original file line number	Diff line number	Diff line change
`@@ -813,6 +813,9 @@ INTERNAL_HIDDEN iso_alloc_zone_t is_zone_usable(iso_alloc_zone_t zone, size_t`
`813`	`813`	`* chunks smaller than ZONE_1024 */`
`814`	`814`	`if(size > ZONE_1024 && zone->chunk_size >= (size << WASTED_SZ_MULTIPLIER_SHIFT)) {`
`815`	`815`	`return NULL;`
	`816`	`+ }`
	`817`	`+ if(size <= ZONE_1024 && zone->chunk_size > ZONE_1024) {`
	`818`	`+ return NULL;`
`816`	`819`	`}`
`817`	`820`
`818`	`821`	`if(zone->next_free_bit_slot != BAD_BIT_SLOT) {`