This is a note to let you know that I've just added the patch titled

IB/core: Fix missing RDMA cgroups release in case of failure to register device

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: ib-core-fix-missing-rdma-cgroups-release-in-case-of-failure-to-register-device.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 2fb4f4eadd180a50112618dd9c5fef7fc50d4f08 Mon Sep 17 00:00:00 2001

From: Parav Pandit parav@mellanox.com Date: Sun, 25 Feb 2018 13:39:56 +0200 Subject: IB/core: Fix missing RDMA cgroups release in case of failure to register device

From: Parav Pandit parav@mellanox.com

commit 2fb4f4eadd180a50112618dd9c5fef7fc50d4f08 upstream.

During IB device registration process, if query_device() fails or if ib_core fails to registers sysfs entries, rdma cgroup cleanup is skipped.

Cc: stable@vger.kernel.org # v4.2+ Fixes: 4be3a4fa51f4 ("IB/core: Fix kernel crash during fail to initialize device") Reviewed-by: Daniel Jurgens danielj@mellanox.com Signed-off-by: Parav Pandit parav@mellanox.com Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- drivers/infiniband/core/device.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -534,14 +534,14 @@ int ib_register_device(struct ib_device ret = device->query_device(device, &device->attrs, &uhw); if (ret) { pr_warn("Couldn't query the device attributes\n"); - goto cache_cleanup; + goto cg_cleanup; }

ret = ib_device_register_sysfs(device, port_callback); if (ret) { pr_warn("Couldn't register device %s with driver model\n", device->name); - goto cache_cleanup; + goto cg_cleanup; }

device->reg_state = IB_DEV_REGISTERED; @@ -557,6 +557,8 @@ int ib_register_device(struct ib_device mutex_unlock(&device_mutex); return 0;

+cg_cleanup: + ib_device_unregister_rdmacg(device); cache_cleanup: ib_cache_cleanup_one(device); ib_cache_release_one(device);

Patches currently in stable-queue which might be from parav@mellanox.com are

queue-4.14/ib-core-fix-missing-rdma-cgroups-release-in-case-of-failure-to-register-device.patch