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From: Leon Romanovsky <leon@kernel.org>
To: Doug Ledford <dledford@redhat.com>, Jason Gunthorpe <jgg@mellanox.com>
Cc: Leon Romanovsky <leonro@mellanox.com>,
	RDMA mailing list <linux-rdma@vger.kernel.org>,
	Guy Levi <guyle@mellanox.com>, Ido Kalir <idok@mellanox.com>,
	Jason Gunthorpe <jgg@ziepe.ca>, Majd Dibbiny <majd@mellanox.com>,
	Mark Zhang <markz@mellanox.com>, Moni Shoua <monis@mellanox.com>
Subject: [PATCH rdma-rc 2/8] RDMA/counters: Properly implement PID checks
Date: Thu, 15 Aug 2019 11:38:28 +0300
Message-ID: <20190815083834.9245-3-leon@kernel.org> (raw)
In-Reply-To: <20190815083834.9245-1-leon@kernel.org>

From: Leon Romanovsky <leonro@mellanox.com>

"Auto" configuration mode is called for visible in that PID
namespace and it ensures that all counters and QPs are coexist
in the same namespace and belong to same PID.

Fixes: 99fa331dc862 ("RDMA/counter: Add "auto" configuration mode support")
Reviewed-by: Mark Zhang <markz@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
---
 drivers/infiniband/core/counters.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/infiniband/core/counters.c b/drivers/infiniband/core/counters.c
index 955d061af06a..af8c85d18e62 100644
--- a/drivers/infiniband/core/counters.c
+++ b/drivers/infiniband/core/counters.c
@@ -149,13 +149,11 @@ static bool auto_mode_match(struct ib_qp *qp, struct rdma_counter *counter,
 	struct auto_mode_param *param = &counter->mode.param;
 	bool match = true;
 
-	if (rdma_is_kernel_res(&counter->res) != rdma_is_kernel_res(&qp->res))
+	if (!rdma_is_visible_in_pid_ns(&qp->res))
 		return false;
 
-	/* Ensure that counter belong to right PID */
-	if (!rdma_is_kernel_res(&counter->res) &&
-	    !rdma_is_kernel_res(&qp->res) &&
-	    (task_pid_vnr(counter->res.task) != current->pid))
+	/* Ensure that counter belongs to the right PID */
+	if (task_pid_nr(counter->res.task) != task_pid_nr(qp->res.task))
 		return false;
 
 	if (auto_mask & RDMA_COUNTER_MASK_QP_TYPE)
-- 
2.20.1


  parent reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-15  8:38 [PATCH rdma-rc 0/8] Fixes for v5.3 Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 1/8] IB/core: Fix NULL pointer dereference when bind QP to counter Leon Romanovsky
2019-08-15  8:38 ` Leon Romanovsky [this message]
2019-08-15  8:38 ` [PATCH rdma-rc 3/8] RDMA/restrack: Rewrite PID namespace check to be reliable Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 4/8] RDMA/mlx5: Fix MR npages calculation for IB_ACCESS_HUGETLB Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 5/8] IB/mlx5: Consolidate use_umr checks into single function Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 6/8] IB/mlx5: Report and handle ODP support properly Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 7/8] IB/mlx5: Fix MR re-registration flow to use UMR properly Leon Romanovsky
2019-08-15  8:38 ` [PATCH rdma-rc 8/8] IB/mlx5: Block MR WR if UMR is not possible Leon Romanovsky
2019-08-15 19:29 ` [PATCH rdma-rc 0/8] Fixes for v5.3 Jason Gunthorpe
2019-08-15 20:26   ` Guy Levi(SW)
2019-08-20 16:56 ` Doug Ledford
2019-08-20 17:38   ` Jason Gunthorpe
2019-08-20 17:47     ` Doug Ledford

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