linux-stable/drivers/infiniband
Aharon Landau 1c6eefe997 RDMA/core: Require the driver to set the IOVA correctly during rereg_mr
[ Upstream commit f1a090f09f ]

If the driver returns a new MR during rereg it has to fill it with the
IOVA from the proper source. If IB_MR_REREG_TRANS is set then the IOVA is
cmd.hca_va, otherwise the IOVA comes from the old MR. mlx5 for example has
two calls inside rereg_mr:

		return create_real_mr(new_pd, umem, mr->ibmr.iova,
				      new_access_flags);
and
		return create_real_mr(new_pd, new_umem, iova, new_access_flags);

Unconditionally overwriting the iova in the newly allocated MR will
corrupt the iova if the first path is used.

Remove the redundant initializations from ib_uverbs_rereg_mr().

Fixes: 6e0954b11c ("RDMA/uverbs: Allow drivers to create a new HW object during rereg_mr")
Link: https://lore.kernel.org/r/4b0a31bbc372842613286a10d7a8cbb0ee6069c7.1635400472.git.leonro@nvidia.com
Signed-off-by: Aharon Landau <aharonl@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-11-18 19:16:58 +01:00
..
core RDMA/core: Require the driver to set the IOVA correctly during rereg_mr 2021-11-18 19:16:58 +01:00
hw RDMA/hns: Modify the value of MAX_LP_MSG_LEN to meet hardware compatibility 2021-11-18 19:16:57 +01:00
sw RDMA/rxe: Fix wrong port_cap_flags 2021-11-18 19:16:46 +01:00
ulp SCSI misc on 20210902 2021-09-02 15:09:46 -07:00
Kconfig RDMA/irdma: Add irdma Kconfig/Makefile and remove i40iw 2021-06-02 20:06:36 -03:00
Makefile