Patch "IB/core: Fix missing RDMA cgroups release in case of failure to register device" has been added to the 4.15-stable tree

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 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

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-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Parav Pandit <[email protected]>
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 <[email protected]>

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.

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

@@ -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 [email protected] are

queue-4.15/ib-core-fix-missing-rdma-cgroups-release-in-case-of-failure-to-register-device.patch