When the possibilities of finding a gap are exhausted at the root node, the error code was not returned which results in returning a range that is currently occupied. Add the necessary check for the error code and return to the caller. Reported-by: Alexander Gordeev <agordeev@xxxxxxxxxxxxx> Fixes: d0aac5e48048 (Maple Tree: add new data structure) Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx> --- lib/maple_tree.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/lib/maple_tree.c b/lib/maple_tree.c index 9dc4ffff18d0..14e9ab14c1da 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -5287,6 +5287,9 @@ int mas_empty_area_rev(struct ma_state *mas, unsigned long min, } } + if (mas_is_err(mas)) + return xa_err(mas->node); + if (unlikely(mas->offset == MAPLE_NODE_SLOTS)) return -EBUSY; -- 2.35.1
