Messages in this thread | | | Date | Sat, 6 Aug 2022 18:12:40 +0300 | Subject | Re: [PATCH] maple_tree: Fix mas_alloc_nodes() | From | Dmitry Osipenko <> |
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02.08.2022 22:36, Liam Howlett пишет: > 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; >
Hello Liam,
This fixed the bug, thank you!
Tested-by: Dmitry Osipenko <digetx@gmail.com> # ARM32 Tegra
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