6.9-stable review patch. If anyone has any objections, please let me know.
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From: Konstantin Taranov kotaranov@microsoft.com
[ Upstream commit f79edef79b6a2161f4124112f9b0c46891bb0b74 ]
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 kotaranov@microsoft.com Link: https://lore.kernel.org/r/1714137160-5222-5-git-send-email-kotaranov@linux.m... Reviewed-by: Long Li longli@microsoft.com Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 c9129218f1be1..89fcc09ded8a4 100644 --- a/drivers/infiniband/hw/mana/cq.c +++ b/drivers/infiniband/hw/mana/cq.c @@ -81,6 +81,8 @@ 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);