From: Yuval Avnery yuvalav@mellanox.com
commit 535005ca8e5e71918d64074032f4b9d4fef8981e upstream.
The open-coded variant missed destroy of SELinux created QP, reuse already existing ib_detroy_qp() call and use this opportunity to clean ib_create_qp() from double prints and unclear exit paths.
Reported-by: Parav Pandit parav@mellanox.com Fixes: d291f1a65232 ("IB/core: Enforce PKey security on QPs") Signed-off-by: Yuval Avnery yuvalav@mellanox.com Reviewed-by: Parav Pandit parav@mellanox.com Reviewed-by: Daniel Jurgens danielj@mellanox.com Signed-off-by: Leon Romanovsky leonro@mellanox.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/infiniband/core/verbs.c | 41 +++++++++++++++++++++++----------------- 1 file changed, 24 insertions(+), 17 deletions(-)
--- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -766,8 +766,8 @@ struct ib_qp *ib_open_qp(struct ib_xrcd } EXPORT_SYMBOL(ib_open_qp);
-static struct ib_qp *ib_create_xrc_qp(struct ib_qp *qp, - struct ib_qp_init_attr *qp_init_attr) +static struct ib_qp *create_xrc_qp(struct ib_qp *qp, + struct ib_qp_init_attr *qp_init_attr) { struct ib_qp *real_qp = qp;
@@ -782,10 +782,10 @@ static struct ib_qp *ib_create_xrc_qp(st
qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, qp_init_attr->qp_context); - if (!IS_ERR(qp)) - __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); - else - real_qp->device->destroy_qp(real_qp); + if (IS_ERR(qp)) + return qp; + + __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); return qp; }
@@ -816,10 +816,8 @@ struct ib_qp *ib_create_qp(struct ib_pd return qp;
ret = ib_create_qp_security(qp, device); - if (ret) { - ib_destroy_qp(qp); - return ERR_PTR(ret); - } + if (ret) + goto err;
qp->device = device; qp->real_qp = qp; @@ -834,8 +832,15 @@ struct ib_qp *ib_create_qp(struct ib_pd INIT_LIST_HEAD(&qp->sig_mrs); qp->port = 0;
- if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) - return ib_create_xrc_qp(qp, qp_init_attr); + if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) { + struct ib_qp *xrc_qp = create_xrc_qp(qp, qp_init_attr); + + if (IS_ERR(xrc_qp)) { + ret = PTR_ERR(xrc_qp); + goto err; + } + return xrc_qp; + }
qp->event_handler = qp_init_attr->event_handler; qp->qp_context = qp_init_attr->qp_context; @@ -863,11 +868,8 @@ struct ib_qp *ib_create_qp(struct ib_pd
if (qp_init_attr->cap.max_rdma_ctxs) { ret = rdma_rw_init_mrs(qp, qp_init_attr); - if (ret) { - pr_err("failed to init MR pool ret= %d\n", ret); - ib_destroy_qp(qp); - return ERR_PTR(ret); - } + if (ret) + goto err; }
/* @@ -880,6 +882,11 @@ struct ib_qp *ib_create_qp(struct ib_pd device->attrs.max_sge_rd);
return qp; + +err: + ib_destroy_qp(qp); + return ERR_PTR(ret); + } EXPORT_SYMBOL(ib_create_qp);