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| author | Jason Gunthorpe <jgg@nvidia.com> | 2026-06-04 04:27:40 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2026-06-08 20:32:42 +0300 |
| commit | 55d339d200c908de83a408d023cfb7be779b0dd7 (patch) | |
| tree | f7be0ebc26671f65632f04c5dd34b4dcfcf60fec | |
| parent | ea4f6f6c53577fb3f05dbd78b15e586772d49831 (diff) | |
| download | linux-55d339d200c908de83a408d023cfb7be779b0dd7.tar.xz | |
IB/mlx5: Don't take the rereg_mr fallback without a new translation
Jumping to mlx5_ib_reg_user_mr() without IB_MR_REREG_TRANS set will use
garbage values for start, length, and iova. Recovering the original mr
parameters for ODP and DMABUF to properly recreate it is too hard in this
flow, so just fail it.
Fixes: ef3642c4f54d ("RDMA/mlx5: Fix error unwinds for rereg_mr")
Link: https://patch.msgid.link/r/1-v1-29ebd2c229b5+fd5-ib_mr_pd_jgg@nvidia.com
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
| -rw-r--r-- | drivers/infiniband/hw/mlx5/mr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index 254e6aa4ccaf..0fa0a57240c0 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -1198,7 +1198,7 @@ struct ib_mr *mlx5_ib_rereg_user_mr(struct ib_mr *ib_mr, int flags, u64 start, } /* DM or ODP MR's don't have a normal umem so we can't re-use it */ if (!mr->umem || is_odp_mr(mr) || is_dmabuf_mr(mr)) - goto recreate; + return ERR_PTR(-EOPNOTSUPP); /* * Only one active MR can refer to a umem at one time, revoke |