From: Leon Romanovsky <leonro@mellanox.com>
To: Saeed Mahameed <saeedm@mellanox.com>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
Bodong Wang <bodong@mellanox.com>,
Mark Bloch <markb@mellanox.com>,
Parav Pandit <parav@mellanox.com>
Subject: Re: [PATCH mlx5-next 15/15] RDMA/mlx5: Cleanup rep when doing unload
Date: Tue, 18 Jun 2019 10:38:25 +0000 [thread overview]
Message-ID: <20190618103823.GG4690@mtr-leonro.mtl.com> (raw)
In-Reply-To: <20190617192247.25107-16-saeedm@mellanox.com>
On Mon, Jun 17, 2019 at 07:23:39PM +0000, Saeed Mahameed wrote:
> From: Bodong Wang <bodong@mellanox.com>
>
> When an IB rep is loaded, netdev for the same vport is saved for later
> reference. However, it's not cleaned up when doing unload. For ECPF,
> kernel crashes when driver is referring to the already removed netdev.
>
> Following steps lead to a shown call trace:
> 1. Create n VFs from host PF
> 2. Distroy the VFs
> 3. Run "rdma link" from ARM
>
> Call trace:
> mlx5_ib_get_netdev+0x9c/0xe8 [mlx5_ib]
> mlx5_query_port_roce+0x268/0x558 [mlx5_ib]
> mlx5_ib_rep_query_port+0x14/0x34 [mlx5_ib]
> ib_query_port+0x9c/0xfc [ib_core]
> fill_port_info+0x74/0x28c [ib_core]
> nldev_port_get_doit+0x1a8/0x1e8 [ib_core]
> rdma_nl_rcv_msg+0x16c/0x1c0 [ib_core]
> rdma_nl_rcv+0xe8/0x144 [ib_core]
> netlink_unicast+0x184/0x214
> netlink_sendmsg+0x288/0x354
> sock_sendmsg+0x18/0x2c
> __sys_sendto+0xbc/0x138
> __arm64_sys_sendto+0x28/0x34
> el0_svc_common+0xb0/0x100
> el0_svc_handler+0x6c/0x84
> el0_svc+0x8/0xc
>
> Cleanup the rep and netdev reference when unloading IB rep.
>
> Fixes: 26628e2d58c9 ("RDMA/mlx5: Move to single device multiport ports in switchdev mode")
> Signed-off-by: Bodong Wang <bodong@mellanox.com>
> Reviewed-by: Mark Bloch <markb@mellanox.com>
> Reviewed-by: Parav Pandit <parav@mellanox.com>
> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
> ---
> drivers/infiniband/hw/mlx5/ib_rep.c | 18 +++++++++++-------
> 1 file changed, 11 insertions(+), 7 deletions(-)
>
Thanks,
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
prev parent reply other threads:[~2019-06-18 10:38 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-17 19:23 [PATCH mlx5-next 00/15] Mellanox, mlx5 vport metadata matching Saeed Mahameed
2019-06-17 19:23 ` [PATCH mlx5-next 01/15] net/mlx5: Introduce vport metadata matching bits and enum constants Saeed Mahameed
2019-06-17 19:23 ` [PATCH mlx5-next 02/15] net/mlx5: Get vport ACL namespace by vport index Saeed Mahameed
2019-06-17 19:23 ` [PATCH mlx5-next 03/15] net/mlx5: Support allocating modify header context from ingress ACL Saeed Mahameed
2019-06-17 19:23 ` [PATCH mlx5-next 04/15] net/mlx5: Add flow context for flow tag Saeed Mahameed
2019-06-17 19:23 ` [PATCH mlx5-next 05/15] net/mlx5: E-Switch, Tag packet with vport number in VF vports and uplink ingress ACLs Saeed Mahameed
2019-06-18 10:31 ` Parav Pandit
2019-06-19 5:12 ` Jianbo Liu
2019-06-19 5:42 ` Parav Pandit
2019-06-19 6:45 ` Jianbo Liu
2019-06-19 12:52 ` Jianbo Liu
2019-06-18 11:00 ` Parav Pandit
2019-06-17 19:23 ` [PATCH mlx5-next 06/15] net/mlx5e: Specifying known origin of packets matching the flow Saeed Mahameed
2019-06-17 19:23 ` [PATCH mlx5-next 07/15] net/mlx5: E-Switch, Add match on vport metadata for rule in fast path Saeed Mahameed
2019-06-17 19:23 ` [PATCH mlx5-next 08/15] net/mlx5: E-Switch, Add query and modify esw vport context functions Saeed Mahameed
2019-06-17 19:23 ` [PATCH mlx5-next 09/15] net/mlx5: E-Switch, Pass metadata from FDB to eswitch manager Saeed Mahameed
2019-06-17 19:23 ` [PATCH mlx5-next 10/15] net/mlx5: E-Switch, Add match on vport metadata for rule in slow path Saeed Mahameed
2019-06-17 19:23 ` [PATCH mlx5-next 11/15] RDMA/mlx5: Add vport metadata matching for IB representors Saeed Mahameed
2019-06-18 10:19 ` Leon Romanovsky
2019-06-19 4:44 ` Jianbo Liu
2019-06-19 5:04 ` Leon Romanovsky
2019-06-19 6:40 ` Jianbo Liu
2019-06-19 6:51 ` Leon Romanovsky
2019-06-19 7:26 ` Mark Bloch
2019-06-19 7:43 ` Leon Romanovsky
2019-06-19 7:58 ` Mark Bloch
2019-06-19 8:12 ` Leon Romanovsky
2019-06-19 17:52 ` Mark Bloch
2019-06-17 19:23 ` [PATCH mlx5-next 12/15] net/mlx5: E-Switch, Enable vport metadata matching if firmware supports it Saeed Mahameed
2019-06-18 10:24 ` Parav Pandit
2019-06-18 10:35 ` Leon Romanovsky
2019-06-17 19:23 ` [PATCH mlx5-next 13/15] net/mlx5: E-Switch, Use vport index when init rep Saeed Mahameed
2019-06-17 19:23 ` [PATCH mlx5-next 14/15] {IB, net}/mlx5: E-Switch, Use index of rep for vport to IB port mapping Saeed Mahameed
2019-06-18 10:42 ` Leon Romanovsky
2019-06-18 10:47 ` Parav Pandit
2019-06-18 18:25 ` Saeed Mahameed
2019-06-19 5:00 ` Leon Romanovsky
2019-06-17 19:23 ` [PATCH mlx5-next 15/15] RDMA/mlx5: Cleanup rep when doing unload Saeed Mahameed
2019-06-18 10:38 ` Leon Romanovsky [this message]
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