From: Bart Van Assche <[email protected]> [ Upstream commit 642c7cbcaf2ffc1e27f67eda3dc47347ac5aff37 ]
Since index values equal to or above 'range' can trigger memory corruption, complain if index >= range. Signed-off-by: Bart Van Assche <[email protected]> Reviewed-by: Andrew Boyer <[email protected]> Cc: Moni Shoua <[email protected]> Signed-off-by: Doug Ledford <[email protected]> Signed-off-by: Sasha Levin <[email protected]> --- drivers/infiniband/sw/rxe/rxe_pool.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/infiniband/sw/rxe/rxe_pool.c b/drivers/infiniband/sw/rxe/rxe_pool.c index 6bac0717c540..ee26a1b1b4ed 100644 --- a/drivers/infiniband/sw/rxe/rxe_pool.c +++ b/drivers/infiniband/sw/rxe/rxe_pool.c @@ -274,6 +274,7 @@ static u32 alloc_index(struct rxe_pool *pool) if (index >= range) index = find_first_zero_bit(pool->table, range); + WARN_ON_ONCE(index >= range); set_bit(index, pool->table); pool->last = index; return index + pool->min_index; -- 2.11.0
