+ maple-tree-add-new-data-structure-fix-3.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: maple_tree: fix mas_alloc_nodes()
has been added to the -mm mm-unstable branch.  Its filename is
     maple-tree-add-new-data-structure-fix-3.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/maple-tree-add-new-data-structure-fix-3.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Liam Howlett <liam.howlett@oracle.com>
Subject: maple_tree: fix mas_alloc_nodes()
Date: Tue, 2 Aug 2022 19:36:24 +0000

Use MAPLE_ALLOC_SLOTS, which differs on 32bit.  This was causing an
out of bounds issue on 32bit bulk allocations

Link: https://lkml.kernel.org/r/20220802193612.2886170-1-Liam.Howlett@oracle.com
Fixes: 06b152b7980a (Maple Tree: add new data structure)
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/maple_tree.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/lib/maple_tree.c~maple-tree-add-new-data-structure-fix-3
+++ a/lib/maple_tree.c
@@ -1242,7 +1242,7 @@ static inline void mas_alloc_nodes(struc
 
 	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;
 
_

Patches currently in -mm which might be from liam.howlett@oracle.com are

maple-tree-add-new-data-structure-fix-2.patch
maple-tree-add-new-data-structure-fix.patch
maple-tree-add-new-data-structure-fix-3.patch
kernel-fork-use-maple-tree-for-dup_mmap-during-forking-fix.patch
maple_tree-do-not-inline-write-slow-path.patch