diff options
| author | Steve Wise <swise@opengridcomputing.com> | 2018-02-14 18:43:36 -0800 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-02-16 10:18:11 -0700 |
| commit | 2f08ee363fe097bc6dc01aac53e1798b16c00986 (patch) | |
| tree | 204e7fec71004dbca9041601d93f8b770bb3d576 /drivers/infiniband/core/uverbs_cmd.c | |
| parent | 2188558621ed475cef55fa94ce535499452f0091 (diff) | |
| download | lwn-2f08ee363fe097bc6dc01aac53e1798b16c00986.tar.gz lwn-2f08ee363fe097bc6dc01aac53e1798b16c00986.zip | |
RDMA/restrack: don't use uaccess_kernel()
uaccess_kernel() isn't sufficient to determine if an rdma resource is
user-mode or not. For example, resources allocated in the add_one()
function of an ib_client get falsely labeled as user mode, when they
are kernel mode allocations. EG: mad qps.
The result is that these qps are skipped over during a nldev query
because of an erroneous namespace mismatch.
So now we determine if the resource is user-mode by looking at the object
struct's uobject or similar pointer to know if it was allocated for user
mode applications.
Fixes: 02d8883f520e ("RDMA/restrack: Add general infrastructure to track RDMA resources")
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/core/uverbs_cmd.c')
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index dbcfb313cee9..25a0e0e083b3 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -1520,7 +1520,8 @@ static int create_qp(struct ib_uverbs_file *file, if (cmd->qp_type == IB_QPT_XRC_TGT) qp = ib_create_qp(pd, &attr); else - qp = _ib_create_qp(device, pd, &attr, uhw); + qp = _ib_create_qp(device, pd, &attr, uhw, + &obj->uevent.uobject); if (IS_ERR(qp)) { ret = PTR_ERR(qp); @@ -1553,7 +1554,6 @@ static int create_qp(struct ib_uverbs_file *file, if (ind_tbl) atomic_inc(&ind_tbl->usecnt); } - qp->uobject = &obj->uevent.uobject; obj->uevent.uobject.object = qp; |