Patch "RDMA/hns: Fix memory leak in free_mr_init()" has been added to the 6.1-stable tree

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This is a note to let you know that I've just added the patch titled

    RDMA/hns: Fix memory leak in free_mr_init()

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     rdma-hns-fix-memory-leak-in-free_mr_init.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit b6dfce6c1917d51074993730bed4db6a9435ec36
Author: Chengchang Tang <tangchengchang@xxxxxxxxxx>
Date:   Thu Dec 7 19:42:31 2023 +0800

    RDMA/hns: Fix memory leak in free_mr_init()
    
    [ Upstream commit 288f535951aa81ed674f5e5477ab11b9d9351b8c ]
    
    When a reserved QP fails to be created, the memory of the remaining
    created reserved QPs is leaked.
    
    Fixes: 70f92521584f ("RDMA/hns: Use the reserved loopback QPs to free MR before destroying MPT")
    Signed-off-by: Chengchang Tang <tangchengchang@xxxxxxxxxx>
    Signed-off-by: Junxian Huang <huangjunxian6@xxxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20231207114231.2872104-6-huangjunxian6@xxxxxxxxxxxxx
    Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 280a3458bb53..58fbb1d3b7f4 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -2819,6 +2819,10 @@ static int free_mr_alloc_res(struct hns_roce_dev *hr_dev)
 	return 0;
 
 create_failed_qp:
+	for (i--; i >= 0; i--) {
+		hns_roce_v2_destroy_qp(&free_mr->rsv_qp[i]->ibqp, NULL);
+		kfree(free_mr->rsv_qp[i]);
+	}
 	hns_roce_destroy_cq(cq, NULL);
 	kfree(cq);
 




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