Fix chunk accounting related to triggering gdump profiles.

Fix in place huge reallocation to update the chunk counters that are
used for triggering gdump profiles.

Author: jasone

ChangeLog

@@ -23,6 +23,7 @@ brevity.  Much more detail can be found in the git revision history:
     to avoid unfortunate interactions during fork(2).  (@jasone)
 
   Bug fixes:
+  - Fix chunk accounting related to triggering gdump profiles.  (@jasone)
   - Link against librt for clock_gettime(2) if glibc < 2.17.  (@jasone)
   - Scale leak report summary according to sampling probability.  (@jasone)
 

src/huge.c

@@ -23,6 +23,15 @@ huge_node_set(tsdn_t *tsdn, const void *ptr, extent_node_t *node)
 	return (chunk_register(tsdn, ptr, node));
 }
 
+static void
+huge_node_reset(tsdn_t *tsdn, const void *ptr, extent_node_t *node)
+{
+	bool err;
+
+	err = huge_node_set(tsdn, ptr, node);
+	assert(!err);
+}
+
 static void
 huge_node_unset(const void *ptr, const extent_node_t *node)
 {
@@ -162,8 +171,10 @@ huge_ralloc_no_move_similar(tsdn_t *tsdn, void *ptr, size_t oldsize,
 
 	malloc_mutex_lock(tsdn, &arena->huge_mtx);
 	/* Update the size of the huge allocation. */
+	huge_node_unset(ptr, node);
 	assert(extent_node_size_get(node) != usize);
 	extent_node_size_set(node, usize);
+	huge_node_reset(tsdn, ptr, node);
 	/* Update zeroed. */
 	extent_node_zeroed_set(node, post_zeroed);
 	malloc_mutex_unlock(tsdn, &arena->huge_mtx);
@@ -224,7 +235,9 @@ huge_ralloc_no_move_shrink(tsdn_t *tsdn, void *ptr, size_t oldsize,
 
 	malloc_mutex_lock(tsdn, &arena->huge_mtx);
 	/* Update the size of the huge allocation. */
+	huge_node_unset(ptr, node);
 	extent_node_size_set(node, usize);
+	huge_node_reset(tsdn, ptr, node);
 	/* Update zeroed. */
 	extent_node_zeroed_set(node, post_zeroed);
 	malloc_mutex_unlock(tsdn, &arena->huge_mtx);
@@ -260,7 +273,9 @@ huge_ralloc_no_move_expand(tsdn_t *tsdn, void *ptr, size_t oldsize,
 
 	malloc_mutex_lock(tsdn, &arena->huge_mtx);
 	/* Update the size of the huge allocation. */
+	huge_node_unset(ptr, node);
 	extent_node_size_set(node, usize);
+	huge_node_reset(tsdn, ptr, node);
 	malloc_mutex_unlock(tsdn, &arena->huge_mtx);
 
 	if (zero || (config_fill && unlikely(opt_zero))) {