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Subject[PATCH] maple_tree: Fix mas_alloc_nodes()
Date
Use MAPLE_ALLOC_SLOTS, which differs on 32bit.  This was causing an
out of bounds issue on 32bit bulk allocations

Fixes: 06b152b7980a (Maple Tree: add new data structure)
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
---
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 4e41f3394114..032e7bb0d44f 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -1242,7 +1242,7 @@ static inline void mas_alloc_nodes(struct ma_state *mas, gfp_t gfp)

node = mas->alloc;
while (requested) {
- max_req = MAPLE_NODE_SLOTS - 1;
+ max_req = MAPLE_ALLOC_SLOTS;
if (node->slot[0]) {
unsigned int offset = node->node_count + 1;

--
2.35.1
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