From f79edef79b6a2161f4124112f9b0c46891bb0b74 Mon Sep 17 00:00:00 2001 From: Konstantin Taranov Date: Fri, 26 Apr 2024 06:12:39 -0700 Subject: [PATCH] RDMA/mana_ib: boundary check before installing cq callbacks Add a boundary check inside mana_ib_install_cq_cb to prevent index overflow. Fixes: 2a31c5a7e0d8 ("RDMA/mana_ib: Introduce mana_ib_install_cq_cb helper function") Signed-off-by: Konstantin Taranov Link: https://lore.kernel.org/r/1714137160-5222-5-git-send-email-kotaranov@linux.microsoft.com Reviewed-by: Long Li Signed-off-by: Leon Romanovsky --- drivers/infiniband/hw/mana/cq.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/infiniband/hw/mana/cq.c b/drivers/infiniband/hw/mana/cq.c index 298e8f15a659..688ffe61f6b2 100644 --- a/drivers/infiniband/hw/mana/cq.c +++ b/drivers/infiniband/hw/mana/cq.c @@ -70,6 +70,8 @@ int mana_ib_install_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq *cq) struct gdma_context *gc = mdev_to_gc(mdev); struct gdma_queue *gdma_cq; + if (cq->queue.id >= gc->max_num_cqs) + return -EINVAL; /* Create CQ table entry */ WARN_ON(gc->cq_table[cq->queue.id]); gdma_cq = kzalloc(sizeof(*gdma_cq), GFP_KERNEL);