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| author |   Christophe Jaillet <christophe.jaillet@wanadoo.fr> | 2018-06-11 20:15:11 +0200 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2018-06-11 12:43:41 -0600 |
| commit | 3dc7c7badb7502ec3e3aa817a8bdd9e53aa54c52 (patch) | |
| tree | a0f0646be188fa64044828964c64db81bc868217 /drivers/infiniband/hw/mlx4 | |
| parent | RDMA/qedr: Fix NULL pointer dereference when running over iWARP without RDMA-CM (diff) | |
| download | linux-dev-3dc7c7badb7502ec3e3aa817a8bdd9e53aa54c52.tar.xz linux-dev-3dc7c7badb7502ec3e3aa817a8bdd9e53aa54c52.zip | |
IB/mlx4: Fix an error handling path in 'mlx4_ib_rereg_user_mr()'
Before returning -EPERM we should release some resources, as already done
in the other error handling path of the function.
Fixes: d8f9cc328c88 ("IB/mlx4: Mark user MR as writable if actual virtual memory is writable")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx4')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/mr.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c index ed1f253faf97..c7c85c22e4e3 100644 --- a/drivers/infiniband/hw/mlx4/mr.c +++ b/drivers/infiniband/hw/mlx4/mr.c @@ -486,8 +486,11 @@ int mlx4_ib_rereg_user_mr(struct ib_mr *mr, int flags, } if (flags & IB_MR_REREG_ACCESS) { - if (ib_access_writable(mr_access_flags) && !mmr->umem->writable) - return -EPERM; + if (ib_access_writable(mr_access_flags) && + !mmr->umem->writable) { + err = -EPERM; + goto release_mpt_entry; + } err = mlx4_mr_hw_change_access(dev->dev, *pmpt_entry, convert_access(mr_access_flags)); |