Messages in this thread Patch in this message | | | From | Liam Howlett <> | Subject | [PATCH] maple_tree: Fix mas_empty_area() wrapping | Date | Tue, 19 Jul 2022 17:01:30 +0000 |
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Set the error code correctly when at the left most node and search has been exhausted. This was an overflow bug.
Reported-by: Sven Schnelle <svens@linux.ibm.com> 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 1b8130f19c2e..0c0bda979693 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -4994,7 +4994,7 @@ static inline bool mas_anode_descend(struct ma_state *mas, unsigned long size) } next_slot: min = pivot + 1; - if (mas->last < min) { + if (mas->last <= pivot) { mas_set_err(mas, -EBUSY); return true; } -- 2.35.1
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