From: Antoine Tenart atenart@kernel.org
stable inclusion from linux-4.19.226 commit 35cad2003b6447932cfe91f795090586306738e8
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[ Upstream commit d7dac083414eb5bb99a6d2ed53dc2c1b405224e5 ]
When updating Rx and Tx queue kobjects, the queue count should always be updated to match the queue kobjects count. This was not done in the net device unregistration path, fix it. Tracking all queue count updates will allow in a following up patch to detect illegal updates.
Signed-off-by: Antoine Tenart atenart@kernel.org Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yongqiang Liu liuyongqiang13@huawei.com Signed-off-by: Laibin Qiu qiulaibin@huawei.com --- net/core/net-sysfs.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index fe0d255d66c8..e5dc04cb5599 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -1616,6 +1616,9 @@ static void remove_queue_kobjects(struct net_device *dev)
net_rx_queue_update_kobjects(dev, real_rx, 0); netdev_queue_update_kobjects(dev, real_tx, 0); + + dev->real_num_rx_queues = 0; + dev->real_num_tx_queues = 0; #ifdef CONFIG_SYSFS kset_unregister(dev->queues_kset); #endif