RDMA/core: Fix GID entry ref leak when create_ah fails

[ Upstream commit aca3b0fa3d04b40c96934d86cc224cccfa7ea8e0 ]

If AH create request fails, release sgid_attr to avoid GID entry
referrence leak reported while releasing GID table

Fixes: 1a1f460ff151 ("RDMA: Hold the sgid_attr inside the struct ib_ah/qp")
Link: https://lore.kernel.org/r/20230401063424.342204-1-saravanan.vajravel@broadcom.com
Reviewed-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Saravanan Vajravel <saravanan.vajravel@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 11b1c16..b99b3cc 100644 (file)
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -532,6 +532,8 @@ static struct ib_ah *_rdma_create_ah(struct ib_pd *pd,
        else
                ret = device->ops.create_ah(ah, &init_attr, NULL);
        if (ret) {
+               if (ah->sgid_attr)
+                       rdma_put_gid_attr(ah->sgid_attr);
                kfree(ah);
                return ERR_PTR(ret);
        }