Warnings before patch:
files: ['drivers/net/tun.c', 'include/linux/if_tun.h', 'net/core/dev.c']
Warning: net/core/dev.c:708 No description found for return value of 'dev_get_iflink'
Warning: net/core/dev.c:726 No description found for return value of 'dev_fill_metadata_dst'
Warning: net/core/dev.c:879 No description found for return value of '__dev_get_by_name'
Warning: net/core/dev.c:900 No description found for return value of 'dev_get_by_name_rcu'
Warning: net/core/dev.c:936 No description found for return value of 'netdev_get_by_name'
Warning: net/core/dev.c:958 No description found for return value of '__dev_get_by_index'
Warning: net/core/dev.c:982 No description found for return value of 'dev_get_by_index_rcu'
Warning: net/core/dev.c:1021 No description found for return value of 'netdev_get_by_index'
Warning: net/core/dev.c:1041 No description found for return value of 'dev_get_by_napi_id'
Warning: net/core/dev.c:1193 No description found for return value of 'netdev_get_name'
Warning: net/core/dev.c:1235 No description found for return value of 'dev_getbyhwaddr_rcu'
Warning: net/core/dev.c:1325 No description found for return value of 'dev_valid_name'
Warning: net/core/dev.c:1358 No description found for return value of '__dev_alloc_name'
Warning: net/core/dev.c:1447 No description found for return value of 'dev_alloc_name'
Warning: net/core/dev.c:1568 No description found for return value of 'dev_get_alias'
Warning: net/core/dev.c:1968 No description found for return value of 'register_netdevice_notifier'
Warning: net/core/dev.c:2023 No description found for return value of 'unregister_netdevice_notifier'
Warning: net/core/dev.c:2099 No description found for return value of 'register_netdevice_notifier_net'
Warning: net/core/dev.c:2128 No description found for return value of 'unregister_netdevice_notifier_net'
Warning: net/core/dev.c:2236 No description found for return value of 'call_netdevice_notifiers_info'
Warning: net/core/dev.c:2269 No description found for return value of 'call_netdevice_notifiers_info_robust'
Warning: net/core/dev.c:2300 No description found for return value of 'call_netdevice_notifiers'
Warning: net/core/dev.c:2316 No description found for return value of 'call_netdevice_notifiers_mtu'
Warning: net/core/dev.c:2475 No description found for return value of 'dev_forward_skb'
Warning: net/core/dev.c:2534 No description found for return value of 'dev_nit_active_rcu'
Warning: net/core/dev.c:3243 No description found for return value of 'netif_set_real_num_rx_queues'
Warning: net/core/dev.c:3274 No description found for return value of 'netif_set_real_num_queues'
Warning: net/core/dev.c:3362 No description found for return value of 'netif_get_num_default_rss_queues'
Warning: net/core/dev.c:4326 No description found for return value of 'dev_loopback_xmit'
Warning: net/core/dev.c:5208 No description found for return value of 'rps_may_expire_flow'
Warning: net/core/dev.c:5716 No description found for return value of '__netif_rx'
Warning: net/core/dev.c:5748 No description found for return value of 'netif_rx'
Warning: net/core/dev.c:5865 No description found for return value of 'netdev_is_rx_handler_busy'
Warning: net/core/dev.c:5888 No description found for return value of 'netdev_rx_handler_register'
Warning: net/core/dev.c:6213 No description found for return value of 'netif_receive_skb_core'
Warning: net/core/dev.c:6445 No description found for return value of 'netif_receive_skb'
Warning: net/core/dev.c:6720 No description found for return value of 'napi_schedule_prep'
Warning: net/core/dev.c:8020 No description found for return value of 'netdev_has_upper_dev'
Warning: net/core/dev.c:8044 No description found for return value of 'netdev_has_upper_dev_all_rcu'
Warning: net/core/dev.c:8062 No description found for return value of 'netdev_has_any_upper_dev'
Warning: net/core/dev.c:8077 No description found for return value of 'netdev_master_upper_dev_get'
Warning: net/core/dev.c:8117 No description found for return value of 'netdev_has_any_lower_dev'
Warning: net/core/dev.c:8143 No description found for return value of 'netdev_upper_get_next_dev_rcu'
Warning: net/core/dev.c:8317 No description found for return value of 'netdev_lower_get_next_private'
Warning: net/core/dev.c:8343 No description found for return value of 'netdev_lower_get_next_private_rcu'
Warning: net/core/dev.c:8371 No description found for return value of 'netdev_lower_get_next'
Warning: net/core/dev.c:8659 No description found for return value of 'netdev_lower_get_first_private_rcu'
Warning: net/core/dev.c:8678 No description found for return value of 'netdev_master_upper_dev_get_rcu'
Warning: net/core/dev.c:8959 No description found for return value of 'netdev_upper_dev_link'
Warning: net/core/dev.c:8988 No description found for return value of 'netdev_master_upper_dev_link'
Warning: net/core/dev.c:9416 No description found for return value of 'netdev_get_xmit_slave'
Warning: net/core/dev.c:9445 No description found for return value of 'netdev_sk_get_lowest_dev'
Warning: net/core/dev.c:9731 No description found for return value of 'netif_get_flags'
Warning: net/core/dev.c:10090 No description found for return value of 'dev_get_phys_port_id'
Warning: net/core/dev.c:10108 No description found for return value of 'dev_get_phys_port_name'
Warning: net/core/dev.c:10170 No description found for return value of 'netdev_port_same_parent_id'
Warning: net/core/dev.c:10757 No description found for return value of 'dev_change_xdp_fd'
Warning: net/core/dev.c:11340 No description found for return value of 'register_netdevice'
Warning: net/core/dev.c:11562 No description found for return value of 'register_netdev'
Warning: net/core/dev.c:11608 No description found for return value of 'netdev_wait_allrefs_any'
Warning: net/core/dev.c:11879 No description found for return value of 'dev_get_stats'
Warning: net/core/dev.c:12040 No description found for return value of 'alloc_netdev_mqs'
Warning: net/core/dev.c:12792 No description found for return value of 'netdev_increment_features'
Warning: net/core/dev.c:12944 No description found for return value of 'netdev_drivername'
Warning: net/core/dev.c:708 No description found for return value of 'dev_get_iflink'
Warning: net/core/dev.c:726 No description found for return value of 'dev_fill_metadata_dst'
Warning: net/core/dev.c:879 No description found for return value of '__dev_get_by_name'
Warning: net/core/dev.c:900 No description found for return value of 'dev_get_by_name_rcu'
Warning: net/core/dev.c:936 No description found for return value of 'netdev_get_by_name'
Warning: net/core/dev.c:958 No description found for return value of '__dev_get_by_index'
Warning: net/core/dev.c:982 No description found for return value of 'dev_get_by_index_rcu'
Warning: net/core/dev.c:1021 No description found for return value of 'netdev_get_by_index'
Warning: net/core/dev.c:1041 No description found for return value of 'dev_get_by_napi_id'
Warning: net/core/dev.c:1193 No description found for return value of 'netdev_get_name'
Warning: net/core/dev.c:1235 No description found for return value of 'dev_getbyhwaddr_rcu'
Warning: net/core/dev.c:1325 No description found for return value of 'dev_valid_name'
Warning: net/core/dev.c:1358 No description found for return value of '__dev_alloc_name'
Warning: net/core/dev.c:1447 No description found for return value of 'dev_alloc_name'
Warning: net/core/dev.c:1568 No description found for return value of 'dev_get_alias'
Warning: net/core/dev.c:1968 No description found for return value of 'register_netdevice_notifier'
Warning: net/core/dev.c:2023 No description found for return value of 'unregister_netdevice_notifier'
Warning: net/core/dev.c:2099 No description found for return value of 'register_netdevice_notifier_net'
Warning: net/core/dev.c:2128 No description found for return value of 'unregister_netdevice_notifier_net'
Warning: net/core/dev.c:2236 No description found for return value of 'call_netdevice_notifiers_info'
Warning: net/core/dev.c:2269 No description found for return value of 'call_netdevice_notifiers_info_robust'
Warning: net/core/dev.c:2300 No description found for return value of 'call_netdevice_notifiers'
Warning: net/core/dev.c:2316 No description found for return value of 'call_netdevice_notifiers_mtu'
Warning: net/core/dev.c:2475 No description found for return value of 'dev_forward_skb'
Warning: net/core/dev.c:2534 No description found for return value of 'dev_nit_active_rcu'
Warning: net/core/dev.c:3243 No description found for return value of 'netif_set_real_num_rx_queues'
Warning: net/core/dev.c:3274 No description found for return value of 'netif_set_real_num_queues'
Warning: net/core/dev.c:3362 No description found for return value of 'netif_get_num_default_rss_queues'
Warning: net/core/dev.c:4326 No description found for return value of 'dev_loopback_xmit'
Warning: net/core/dev.c:5208 No description found for return value of 'rps_may_expire_flow'
Warning: net/core/dev.c:5716 No description found for return value of '__netif_rx'
Warning: net/core/dev.c:5748 No description found for return value of 'netif_rx'
Warning: net/core/dev.c:5865 No description found for return value of 'netdev_is_rx_handler_busy'
Warning: net/core/dev.c:5888 No description found for return value of 'netdev_rx_handler_register'
Warning: net/core/dev.c:6213 No description found for return value of 'netif_receive_skb_core'
Warning: net/core/dev.c:6445 No description found for return value of 'netif_receive_skb'
Warning: net/core/dev.c:6720 No description found for return value of 'napi_schedule_prep'
Warning: net/core/dev.c:8020 No description found for return value of 'netdev_has_upper_dev'
Warning: net/core/dev.c:8044 No description found for return value of 'netdev_has_upper_dev_all_rcu'
Warning: net/core/dev.c:8062 No description found for return value of 'netdev_has_any_upper_dev'
Warning: net/core/dev.c:8077 No description found for return value of 'netdev_master_upper_dev_get'
Warning: net/core/dev.c:8117 No description found for return value of 'netdev_has_any_lower_dev'
Warning: net/core/dev.c:8143 No description found for return value of 'netdev_upper_get_next_dev_rcu'
Warning: net/core/dev.c:8317 No description found for return value of 'netdev_lower_get_next_private'
Warning: net/core/dev.c:8343 No description found for return value of 'netdev_lower_get_next_private_rcu'
Warning: net/core/dev.c:8371 No description found for return value of 'netdev_lower_get_next'
Warning: net/core/dev.c:8659 No description found for return value of 'netdev_lower_get_first_private_rcu'
Warning: net/core/dev.c:8678 No description found for return value of 'netdev_master_upper_dev_get_rcu'
Warning: net/core/dev.c:8959 No description found for return value of 'netdev_upper_dev_link'
Warning: net/core/dev.c:8988 No description found for return value of 'netdev_master_upper_dev_link'
Warning: net/core/dev.c:9416 No description found for return value of 'netdev_get_xmit_slave'
Warning: net/core/dev.c:9445 No description found for return value of 'netdev_sk_get_lowest_dev'
Warning: net/core/dev.c:9731 No description found for return value of 'netif_get_flags'
Warning: net/core/dev.c:10090 No description found for return value of 'dev_get_phys_port_id'
Warning: net/core/dev.c:10108 No description found for return value of 'dev_get_phys_port_name'
Warning: net/core/dev.c:10170 No description found for return value of 'netdev_port_same_parent_id'
Warning: net/core/dev.c:10757 No description found for return value of 'dev_change_xdp_fd'
Warning: net/core/dev.c:11340 No description found for return value of 'register_netdevice'
Warning: net/core/dev.c:11562 No description found for return value of 'register_netdev'
Warning: net/core/dev.c:11608 No description found for return value of 'netdev_wait_allrefs_any'
Warning: net/core/dev.c:11879 No description found for return value of 'dev_get_stats'
Warning: net/core/dev.c:12040 No description found for return value of 'alloc_netdev_mqs'
Warning: net/core/dev.c:12792 No description found for return value of 'netdev_increment_features'
Warning: net/core/dev.c:12944 No description found for return value of 'netdev_drivername'

Current warnings:
files: ['drivers/net/tun.c', 'include/linux/if_tun.h', 'net/core/dev.c']
Warning: net/core/dev.c:712 No description found for return value of 'dev_get_iflink'
Warning: net/core/dev.c:730 No description found for return value of 'dev_fill_metadata_dst'
Warning: net/core/dev.c:883 No description found for return value of '__dev_get_by_name'
Warning: net/core/dev.c:904 No description found for return value of 'dev_get_by_name_rcu'
Warning: net/core/dev.c:940 No description found for return value of 'netdev_get_by_name'
Warning: net/core/dev.c:962 No description found for return value of '__dev_get_by_index'
Warning: net/core/dev.c:986 No description found for return value of 'dev_get_by_index_rcu'
Warning: net/core/dev.c:1025 No description found for return value of 'netdev_get_by_index'
Warning: net/core/dev.c:1045 No description found for return value of 'dev_get_by_napi_id'
Warning: net/core/dev.c:1197 No description found for return value of 'netdev_get_name'
Warning: net/core/dev.c:1239 No description found for return value of 'dev_getbyhwaddr_rcu'
Warning: net/core/dev.c:1329 No description found for return value of 'dev_valid_name'
Warning: net/core/dev.c:1362 No description found for return value of '__dev_alloc_name'
Warning: net/core/dev.c:1451 No description found for return value of 'dev_alloc_name'
Warning: net/core/dev.c:1572 No description found for return value of 'dev_get_alias'
Warning: net/core/dev.c:1972 No description found for return value of 'register_netdevice_notifier'
Warning: net/core/dev.c:2027 No description found for return value of 'unregister_netdevice_notifier'
Warning: net/core/dev.c:2103 No description found for return value of 'register_netdevice_notifier_net'
Warning: net/core/dev.c:2132 No description found for return value of 'unregister_netdevice_notifier_net'
Warning: net/core/dev.c:2240 No description found for return value of 'call_netdevice_notifiers_info'
Warning: net/core/dev.c:2273 No description found for return value of 'call_netdevice_notifiers_info_robust'
Warning: net/core/dev.c:2304 No description found for return value of 'call_netdevice_notifiers'
Warning: net/core/dev.c:2320 No description found for return value of 'call_netdevice_notifiers_mtu'
Warning: net/core/dev.c:2479 No description found for return value of 'dev_forward_skb'
Warning: net/core/dev.c:2538 No description found for return value of 'dev_nit_active_rcu'
Warning: net/core/dev.c:3247 No description found for return value of 'netif_set_real_num_rx_queues'
Warning: net/core/dev.c:3278 No description found for return value of 'netif_set_real_num_queues'
Warning: net/core/dev.c:3366 No description found for return value of 'netif_get_num_default_rss_queues'
Warning: net/core/dev.c:4330 No description found for return value of 'dev_loopback_xmit'
Warning: net/core/dev.c:5212 No description found for return value of 'rps_may_expire_flow'
Warning: net/core/dev.c:5720 No description found for return value of '__netif_rx'
Warning: net/core/dev.c:5752 No description found for return value of 'netif_rx'
Warning: net/core/dev.c:5869 No description found for return value of 'netdev_is_rx_handler_busy'
Warning: net/core/dev.c:5892 No description found for return value of 'netdev_rx_handler_register'
Warning: net/core/dev.c:6217 No description found for return value of 'netif_receive_skb_core'
Warning: net/core/dev.c:6449 No description found for return value of 'netif_receive_skb'
Warning: net/core/dev.c:6724 No description found for return value of 'napi_schedule_prep'
Warning: net/core/dev.c:8024 No description found for return value of 'netdev_has_upper_dev'
Warning: net/core/dev.c:8048 No description found for return value of 'netdev_has_upper_dev_all_rcu'
Warning: net/core/dev.c:8066 No description found for return value of 'netdev_has_any_upper_dev'
Warning: net/core/dev.c:8081 No description found for return value of 'netdev_master_upper_dev_get'
Warning: net/core/dev.c:8121 No description found for return value of 'netdev_has_any_lower_dev'
Warning: net/core/dev.c:8147 No description found for return value of 'netdev_upper_get_next_dev_rcu'
Warning: net/core/dev.c:8321 No description found for return value of 'netdev_lower_get_next_private'
Warning: net/core/dev.c:8347 No description found for return value of 'netdev_lower_get_next_private_rcu'
Warning: net/core/dev.c:8375 No description found for return value of 'netdev_lower_get_next'
Warning: net/core/dev.c:8663 No description found for return value of 'netdev_lower_get_first_private_rcu'
Warning: net/core/dev.c:8682 No description found for return value of 'netdev_master_upper_dev_get_rcu'
Warning: net/core/dev.c:8963 No description found for return value of 'netdev_upper_dev_link'
Warning: net/core/dev.c:8992 No description found for return value of 'netdev_master_upper_dev_link'
Warning: net/core/dev.c:9420 No description found for return value of 'netdev_get_xmit_slave'
Warning: net/core/dev.c:9449 No description found for return value of 'netdev_sk_get_lowest_dev'
Warning: net/core/dev.c:9735 No description found for return value of 'netif_get_flags'
Warning: net/core/dev.c:10094 No description found for return value of 'dev_get_phys_port_id'
Warning: net/core/dev.c:10112 No description found for return value of 'dev_get_phys_port_name'
Warning: net/core/dev.c:10174 No description found for return value of 'netdev_port_same_parent_id'
Warning: net/core/dev.c:10761 No description found for return value of 'dev_change_xdp_fd'
Warning: net/core/dev.c:11344 No description found for return value of 'register_netdevice'
Warning: net/core/dev.c:11566 No description found for return value of 'register_netdev'
Warning: net/core/dev.c:11612 No description found for return value of 'netdev_wait_allrefs_any'
Warning: net/core/dev.c:11883 No description found for return value of 'dev_get_stats'
Warning: net/core/dev.c:12044 No description found for return value of 'alloc_netdev_mqs'
Warning: net/core/dev.c:12796 No description found for return value of 'netdev_increment_features'
Warning: net/core/dev.c:12948 No description found for return value of 'netdev_drivername'
Warning: net/core/dev.c:712 No description found for return value of 'dev_get_iflink'
Warning: net/core/dev.c:730 No description found for return value of 'dev_fill_metadata_dst'
Warning: net/core/dev.c:883 No description found for return value of '__dev_get_by_name'
Warning: net/core/dev.c:904 No description found for return value of 'dev_get_by_name_rcu'
Warning: net/core/dev.c:940 No description found for return value of 'netdev_get_by_name'
Warning: net/core/dev.c:962 No description found for return value of '__dev_get_by_index'
Warning: net/core/dev.c:986 No description found for return value of 'dev_get_by_index_rcu'
Warning: net/core/dev.c:1025 No description found for return value of 'netdev_get_by_index'
Warning: net/core/dev.c:1045 No description found for return value of 'dev_get_by_napi_id'
Warning: net/core/dev.c:1197 No description found for return value of 'netdev_get_name'
Warning: net/core/dev.c:1239 No description found for return value of 'dev_getbyhwaddr_rcu'
Warning: net/core/dev.c:1329 No description found for return value of 'dev_valid_name'
Warning: net/core/dev.c:1362 No description found for return value of '__dev_alloc_name'
Warning: net/core/dev.c:1451 No description found for return value of 'dev_alloc_name'
Warning: net/core/dev.c:1572 No description found for return value of 'dev_get_alias'
Warning: net/core/dev.c:1972 No description found for return value of 'register_netdevice_notifier'
Warning: net/core/dev.c:2027 No description found for return value of 'unregister_netdevice_notifier'
Warning: net/core/dev.c:2103 No description found for return value of 'register_netdevice_notifier_net'
Warning: net/core/dev.c:2132 No description found for return value of 'unregister_netdevice_notifier_net'
Warning: net/core/dev.c:2240 No description found for return value of 'call_netdevice_notifiers_info'
Warning: net/core/dev.c:2273 No description found for return value of 'call_netdevice_notifiers_info_robust'
Warning: net/core/dev.c:2304 No description found for return value of 'call_netdevice_notifiers'
Warning: net/core/dev.c:2320 No description found for return value of 'call_netdevice_notifiers_mtu'
Warning: net/core/dev.c:2479 No description found for return value of 'dev_forward_skb'
Warning: net/core/dev.c:2538 No description found for return value of 'dev_nit_active_rcu'
Warning: net/core/dev.c:3247 No description found for return value of 'netif_set_real_num_rx_queues'
Warning: net/core/dev.c:3278 No description found for return value of 'netif_set_real_num_queues'
Warning: net/core/dev.c:3366 No description found for return value of 'netif_get_num_default_rss_queues'
Warning: net/core/dev.c:4330 No description found for return value of 'dev_loopback_xmit'
Warning: net/core/dev.c:5212 No description found for return value of 'rps_may_expire_flow'
Warning: net/core/dev.c:5720 No description found for return value of '__netif_rx'
Warning: net/core/dev.c:5752 No description found for return value of 'netif_rx'
Warning: net/core/dev.c:5869 No description found for return value of 'netdev_is_rx_handler_busy'
Warning: net/core/dev.c:5892 No description found for return value of 'netdev_rx_handler_register'
Warning: net/core/dev.c:6217 No description found for return value of 'netif_receive_skb_core'
Warning: net/core/dev.c:6449 No description found for return value of 'netif_receive_skb'
Warning: net/core/dev.c:6724 No description found for return value of 'napi_schedule_prep'
Warning: net/core/dev.c:8024 No description found for return value of 'netdev_has_upper_dev'
Warning: net/core/dev.c:8048 No description found for return value of 'netdev_has_upper_dev_all_rcu'
Warning: net/core/dev.c:8066 No description found for return value of 'netdev_has_any_upper_dev'
Warning: net/core/dev.c:8081 No description found for return value of 'netdev_master_upper_dev_get'
Warning: net/core/dev.c:8121 No description found for return value of 'netdev_has_any_lower_dev'
Warning: net/core/dev.c:8147 No description found for return value of 'netdev_upper_get_next_dev_rcu'
Warning: net/core/dev.c:8321 No description found for return value of 'netdev_lower_get_next_private'
Warning: net/core/dev.c:8347 No description found for return value of 'netdev_lower_get_next_private_rcu'
Warning: net/core/dev.c:8375 No description found for return value of 'netdev_lower_get_next'
Warning: net/core/dev.c:8663 No description found for return value of 'netdev_lower_get_first_private_rcu'
Warning: net/core/dev.c:8682 No description found for return value of 'netdev_master_upper_dev_get_rcu'
Warning: net/core/dev.c:8963 No description found for return value of 'netdev_upper_dev_link'
Warning: net/core/dev.c:8992 No description found for return value of 'netdev_master_upper_dev_link'
Warning: net/core/dev.c:9420 No description found for return value of 'netdev_get_xmit_slave'
Warning: net/core/dev.c:9449 No description found for return value of 'netdev_sk_get_lowest_dev'
Warning: net/core/dev.c:9735 No description found for return value of 'netif_get_flags'
Warning: net/core/dev.c:10094 No description found for return value of 'dev_get_phys_port_id'
Warning: net/core/dev.c:10112 No description found for return value of 'dev_get_phys_port_name'
Warning: net/core/dev.c:10174 No description found for return value of 'netdev_port_same_parent_id'
Warning: net/core/dev.c:10761 No description found for return value of 'dev_change_xdp_fd'
Warning: net/core/dev.c:11344 No description found for return value of 'register_netdevice'
Warning: net/core/dev.c:11566 No description found for return value of 'register_netdev'
Warning: net/core/dev.c:11612 No description found for return value of 'netdev_wait_allrefs_any'
Warning: net/core/dev.c:11883 No description found for return value of 'dev_get_stats'
Warning: net/core/dev.c:12044 No description found for return value of 'alloc_netdev_mqs'
Warning: net/core/dev.c:12796 No description found for return value of 'netdev_increment_features'
Warning: net/core/dev.c:12948 No description found for return value of 'netdev_drivername'

Warnings before: 128 after: 128