RDMA/mthca: Fix crash when polling CQ for shared QPs

[ Upstream commit dc52aadbc1849cbe3fcf6bc54d35f6baa396e0a1 ]

Commit 21c2fe94abb2 ("RDMA/mthca: Combine special QP struct with mthca QP")
introduced a new struct mthca_sqp which doesn't contain struct mthca_qp
any longer. Placing a pointer of this new struct into qptable leads
to crashes, because mthca_poll_one() expects a qp pointer. Fix this
by putting the correct pointer into qptable.

Fixes: 21c2fe94abb2 ("RDMA/mthca: Combine special QP struct with mthca QP")
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Link: https://lore.kernel.org/r/20230713141658.9426-1-tbogendoerfer@suse.de
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c
index 69bba0e..53f4364 100644 (file)
--- a/drivers/infiniband/hw/mthca/mthca_qp.c
+++ b/drivers/infiniband/hw/mthca/mthca_qp.c
@@ -1393,7 +1393,7 @@ int mthca_alloc_sqp(struct mthca_dev *dev,
        if (mthca_array_get(&dev->qp_table.qp, mqpn))
                err = -EBUSY;
        else
-               mthca_array_set(&dev->qp_table.qp, mqpn, qp->sqp);
+               mthca_array_set(&dev->qp_table.qp, mqpn, qp);
        spin_unlock_irq(&dev->qp_table.lock);
 
        if (err)