Each level's right most node should have (max == ULONG_MAX). This means
current validation skips the right most node on each level.
Only the root node may be below the minimum data threshold.
Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx>
CC: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
CC: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
CC: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
---
v2:
adjust the change log
---
lib/maple_tree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 4f2950a1c38d..667326717f35 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -7585,7 +7585,7 @@ void mt_validate(struct maple_tree *mt)
MAS_WARN_ON(&mas, mte_dead_node(mas.node));
end = mas_data_end(&mas);
if (MAS_WARN_ON(&mas, (end < mt_min_slot_count(mas.node)) &&
- (mas.max != ULONG_MAX))) {
+ (!mte_is_root(mas.node)))) {
pr_err("Invalid size %u of " PTR_FMT "\n",
end, mas_mn(&mas));
}
--
2.34.1
