The patch titled
Subject: maple_tree: fix handle of invalidated state in mas_wr_store_setup()
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
maple_tree-fix-handle-of-invalidated-state-in-mas_wr_store_setup.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/maple_tree-fix-handle-of-invalidated-state-in-mas_wr_store_setup.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Liam Howlett <liam.howlett@xxxxxxxxxx>
Subject: maple_tree: fix handle of invalidated state in mas_wr_store_setup()
Date: Mon, 9 Jan 2023 16:55:42 +0000
If an invalidated maple state is encountered during write, reset the maple
state to MAS_START. This will result in a re-walk of the tree to the
correct location for the write.
Link: https://lore.kernel.org/all/20230107020126.1627-1-sj@xxxxxxxxxx/
Link: https://lkml.kernel.org/r/20230109165455.647400-1-Liam.Howlett@xxxxxxxxxx
Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Reported-by: SeongJae Park <sj@xxxxxxxxxx>
Tested-by: SeongJae Park <sj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/maple_tree.c | 3 +++
1 file changed, 3 insertions(+)
--- a/lib/maple_tree.c~maple_tree-fix-handle-of-invalidated-state-in-mas_wr_store_setup
+++ a/lib/maple_tree.c
@@ -5610,6 +5610,9 @@ static inline void mte_destroy_walk(stru
static void mas_wr_store_setup(struct ma_wr_state *wr_mas)
{
+ if (unlikely(mas_is_paused(wr_mas->mas)))
+ mas_reset(wr_mas->mas);
+
if (!mas_is_start(wr_mas->mas)) {
if (mas_is_none(wr_mas->mas)) {
mas_reset(wr_mas->mas);
_
Patches currently in -mm which might be from liam.howlett@xxxxxxxxxx are
nommu-fix-memory-leak-in-do_mmap-error-path.patch
nommu-fix-do_munmap-error-path.patch
nommu-fix-split_vma-map_count-error.patch
maple_tree-fix-handle-of-invalidated-state-in-mas_wr_store_setup.patch
mm-add-temporary-vma-iterator-versions-of-vma_merge-split_vma-and-__split_vma-fix.patch
maple_tree-remove-gfp_zero-from-kmem_cache_alloc-and-kmem_cache_alloc_bulk.patch
