Hi Colin, [auto build test WARNING on wireless-drivers-next/master] [also build test WARNING on next-20160915] [cannot apply to v4.8-rc6] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] [Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on] [Check https://git-scm.com/docs/git-format-patch for more information] url: https://github.com/0day-ci/linux/commits/Colin-King/mwifiex-fix-null-pointer-deference-when-adapter-is-null/20160915-231625 base: https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next.git master config: x86_64-randconfig-x013-201637 (attached as .config) compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): drivers/net/wireless/marvell/mwifiex/main.c: In function 'mwifiex_shutdown_sw': >> drivers/net/wireless/marvell/mwifiex/main.c:1433:1: warning: label 'exit_remove' defined but not used [-Wunused-label] exit_remove: ^~~~~~~~~~~ Cyclomatic Complexity 5 include/linux/compiler.h:__read_once_size Cyclomatic Complexity 5 include/linux/compiler.h:__write_once_size Cyclomatic Complexity 2 arch/x86/include/asm/bitops.h:set_bit Cyclomatic Complexity 1 arch/x86/include/asm/bitops.h:constant_test_bit Cyclomatic Complexity 1 arch/x86/include/asm/bitops.h:fls64 Cyclomatic Complexity 1 include/linux/log2.h:__ilog2_u64 Cyclomatic Complexity 1 include/linux/list.h:INIT_LIST_HEAD Cyclomatic Complexity 1 include/linux/list.h:list_empty Cyclomatic Complexity 1 include/asm-generic/getorder.h:__get_order Cyclomatic Complexity 1 arch/x86/include/asm/atomic.h:atomic_read Cyclomatic Complexity 1 arch/x86/include/asm/atomic.h:atomic_inc Cyclomatic Complexity 1 arch/x86/include/asm/atomic.h:atomic_dec Cyclomatic Complexity 1 arch/x86/include/asm/atomic.h:atomic_add_return Cyclomatic Complexity 1 include/linux/spinlock.h:spinlock_check Cyclomatic Complexity 1 include/linux/spinlock.h:spin_unlock_irqrestore Cyclomatic Complexity 1 include/linux/kasan.h:kasan_kmalloc Cyclomatic Complexity 28 include/linux/slab.h:kmalloc_index Cyclomatic Complexity 1 include/linux/slab.h:kmem_cache_alloc_trace Cyclomatic Complexity 1 include/linux/slab.h:kmalloc_order_trace Cyclomatic Complexity 68 include/linux/slab.h:kmalloc_large Cyclomatic Complexity 5 include/linux/slab.h:kmalloc Cyclomatic Complexity 1 include/linux/slab.h:kzalloc Cyclomatic Complexity 1 include/linux/skbuff.h:skb_end_pointer Cyclomatic Complexity 1 include/linux/skbuff.h:skb_queue_empty Cyclomatic Complexity 1 include/linux/skbuff.h:skb_shared Cyclomatic Complexity 1 include/linux/skbuff.h:skb_headroom Cyclomatic Complexity 1 include/linux/netdevice.h:netdev_get_tx_queue Cyclomatic Complexity 1 include/linux/netdevice.h:netdev_priv Cyclomatic Complexity 1 include/linux/netdevice.h:netif_tx_stop_queue Cyclomatic Complexity 1 include/linux/netdevice.h:netif_tx_queue_stopped Cyclomatic Complexity 1 include/linux/netdevice.h:netif_carrier_ok Cyclomatic Complexity 1 include/linux/etherdevice.h:is_multicast_ether_addr Cyclomatic Complexity 1 include/linux/etherdevice.h:ether_addr_copy Cyclomatic Complexity 1 include/linux/etherdevice.h:ether_addr_equal Cyclomatic Complexity 1 include/linux/etherdevice.h:ether_addr_equal_unaligned Cyclomatic Complexity 1 drivers/net/wireless/marvell/mwifiex/util.h:MWIFIEX_SKB_TXCB Cyclomatic Complexity 6 drivers/net/wireless/marvell/mwifiex/main.h:mwifiex_get_priv Cyclomatic Complexity 1 drivers/net/wireless/marvell/mwifiex/main.h:mwifiex_netdev_get_priv Cyclomatic Complexity 1 drivers/net/wireless/marvell/mwifiex/main.h:mwifiex_is_skb_mgmt_frame Cyclomatic Complexity 1 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_get_stats Cyclomatic Complexity 1 include/linux/workqueue.h:queue_work Cyclomatic Complexity 2 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_queue_rx_work Cyclomatic Complexity 4 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_set_multicast_list Cyclomatic Complexity 1 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_netdev_select_wmm_queue Cyclomatic Complexity 1 include/linux/err.h:IS_ERR Cyclomatic Complexity 1 include/linux/timekeeping.h:ktime_get_real Cyclomatic Complexity 1 include/linux/skbuff.h:__net_timestamp Cyclomatic Complexity 1 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_open Cyclomatic Complexity 2 drivers/net/wireless/marvell/mwifiex/util.h:MWIFIEX_SKB_RXCB Cyclomatic Complexity 1 include/linux/netdevice.h:dev_kfree_skb_any Cyclomatic Complexity 6 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_unregister Cyclomatic Complexity 2 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_free_adapter Cyclomatic Complexity 3 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_terminate_workqueue Cyclomatic Complexity 1 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_init_module Cyclomatic Complexity 1 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_cleanup_module Cyclomatic Complexity 2 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_queue_main_work Cyclomatic Complexity 9 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_process_rx Cyclomatic Complexity 2 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_rx_work_queue Cyclomatic Complexity 5 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_clone_skb_for_tx_status Cyclomatic Complexity 2 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_init_priv_params Cyclomatic Complexity 1 drivers/net/wireless/marvell/mwifiex/main.c:is_command_pending Cyclomatic Complexity 81 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_main_process Cyclomatic Complexity 2 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_main_work_queue Cyclomatic Complexity 3 drivers/net/wireless/marvell/mwifiex/main.c:_mwifiex_dbg Cyclomatic Complexity 6 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_bypass_tx_queue Cyclomatic Complexity 4 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_queue_tx_pkt Cyclomatic Complexity 4 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_multi_chan_resync Cyclomatic Complexity 19 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_drv_info_dump Cyclomatic Complexity 9 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_upload_device_dump Cyclomatic Complexity 3 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_tx_timeout Cyclomatic Complexity 2 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_set_mac_address Cyclomatic Complexity 16 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_hard_start_xmit Cyclomatic Complexity 3 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_close Cyclomatic Complexity 34 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_fw_dpc Cyclomatic Complexity 6 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_init_hw_fw Cyclomatic Complexity 14 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_reinit_sw Cyclomatic Complexity 20 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_shutdown_sw Cyclomatic Complexity 2 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_do_flr Cyclomatic Complexity 7 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_register Cyclomatic Complexity 15 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_add_card Cyclomatic Complexity 20 drivers/net/wireless/marvell/mwifiex/main.c:mwifiex_remove_card vim +/exit_remove +1433 drivers/net/wireless/marvell/mwifiex/main.c 4c5dae59 Amitkumar Karwar 2016-07-26 1417 atomic_read(&adapter->rx_pending), 4c5dae59 Amitkumar Karwar 2016-07-26 1418 atomic_read(&adapter->tx_pending), 4c5dae59 Amitkumar Karwar 2016-07-26 1419 atomic_read(&adapter->cmd_pending)); 4c5dae59 Amitkumar Karwar 2016-07-26 1420 } 4c5dae59 Amitkumar Karwar 2016-07-26 1421 4c5dae59 Amitkumar Karwar 2016-07-26 1422 for (i = 0; i < adapter->priv_num; i++) { 4c5dae59 Amitkumar Karwar 2016-07-26 1423 priv = adapter->priv[i]; 4c5dae59 Amitkumar Karwar 2016-07-26 1424 if (!priv) 4c5dae59 Amitkumar Karwar 2016-07-26 1425 continue; 4c5dae59 Amitkumar Karwar 2016-07-26 1426 rtnl_lock(); 4c5dae59 Amitkumar Karwar 2016-07-26 1427 if (priv->netdev && 4c5dae59 Amitkumar Karwar 2016-07-26 1428 priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) 4c5dae59 Amitkumar Karwar 2016-07-26 1429 mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev); 4c5dae59 Amitkumar Karwar 2016-07-26 1430 rtnl_unlock(); 4c5dae59 Amitkumar Karwar 2016-07-26 1431 } 4c5dae59 Amitkumar Karwar 2016-07-26 1432 4c5dae59 Amitkumar Karwar 2016-07-26 @1433 exit_remove: 4c5dae59 Amitkumar Karwar 2016-07-26 1434 up(sem); 4c5dae59 Amitkumar Karwar 2016-07-26 1435 exit_sem_err: 4c5dae59 Amitkumar Karwar 2016-07-26 1436 mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__); 2d1cb5d4 Colin Ian King 2016-09-15 1437 exit_return: 4c5dae59 Amitkumar Karwar 2016-07-26 1438 return 0; 4c5dae59 Amitkumar Karwar 2016-07-26 1439 } 4c5dae59 Amitkumar Karwar 2016-07-26 1440 4c5dae59 Amitkumar Karwar 2016-07-26 1441 /* This function gets called during PCIe function level reset. Required :::::: The code at line 1433 was first introduced by commit :::::: 4c5dae59d2e9386c706a2f3c7c2746ae277bf568 mwifiex: add PCIe function level reset support :::::: TO: Amitkumar Karwar <akarwar@xxxxxxxxxxx> :::::: CC: Kalle Valo <kvalo@xxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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