From: Parav Pandit <parav@mellanox.com>
Date: Sun, 25 Feb 2018 11:39:56 +0000 (+0200)
Subject: IB/core: Fix missing RDMA cgroups release in case of failure to register device
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=2fb4f4eadd180a50112618dd9c5fef7fc50d4f08;p=linux.git

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

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>
---

diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index e8010e73a1cf4..bb065c9449be4 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -536,14 +536,14 @@ int ib_register_device(struct ib_device *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;
@@ -559,6 +559,8 @@ int ib_register_device(struct ib_device *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);