+ 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_empty_area() wrapping
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_empty_area() wrapping
Date: Tue, 19 Jul 2022 17:01:30 +0000

Set the error code correctly when at the left most node and search has
been exhausted.  This was an overflow bug.

Link: https://lkml.kernel.org/r/20220719170118.3296447-1-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reported-by: Sven Schnelle <svens@linux.ibm.com>
Tested-by: Sven Schnelle <svens@linux.ibm.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
@@ -4994,7 +4994,7 @@ static inline bool mas_anode_descend(str
 		}
 next_slot:
 		min = pivot + 1;
-		if (mas->last < min) {
+		if (mas->last <= pivot) {
 			mas_set_err(mas, -EBUSY);
 			return true;
 		}
_

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

android-binder-fix-lockdep-check-on-clearing-vma.patch
maple-tree-add-new-data-structure-fix.patch
maple-tree-add-new-data-structure-fix-2.patch
mm-start-tracking-vmas-with-maple-tree-fix.patch
mm-mmap-use-advanced-maple-tree-api-for-mmap_region-fix.patch
maple-tree-add-new-data-structure-fix-3.patch
mm-mlock-drop-dead-code-in-count_mm_mlocked_page_nr.patch