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Message-Id: <20180313152324.885207547@linuxfoundation.org>
Date: Tue, 13 Mar 2018 16:23:42 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Daniel Jurgens <danielj@...lanox.com>,
Parav Pandit <parav@...lanox.com>,
Leon Romanovsky <leon@...nel.org>,
Jason Gunthorpe <jgg@...lanox.com>
Subject: [PATCH 4.15 055/146] IB/core: Fix missing RDMA cgroups release in case of failure to register device
4.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Parav Pandit <parav@...lanox.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@...r.kernel.org> # v4.2+
Fixes: 4be3a4fa51f4 ("IB/core: Fix kernel crash during fail to initialize device")
Reviewed-by: Daniel Jurgens <danielj@...lanox.com>
Signed-off-by: Parav Pandit <parav@...lanox.com>
Signed-off-by: Leon Romanovsky <leon@...nel.org>
Signed-off-by: Jason Gunthorpe <jgg@...lanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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);
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