Re: [PATCH] mwifiex: fix null pointer deference when adapter is null
From: kbuild test robot
Date: Thu Sep 15 2016 - 12:30:09 EST
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>
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