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(HELO 3532383e6126) ([10.239.97.150]) by orviesa002.jf.intel.com with ESMTP; 26 Aug 2026 13:28:08 -0700 Received: from kbuild by 3532383e6126 with local (Exim 4.98.2) (envelope-from ) id 1wzKE9-000000008ST-075W; Wed, 26 Aug 2026 20:28:05 +0000 Date: Thu, 27 Aug 2026 04:27:49 +0800 From: kernel test robot To: Mengyuan Lou , netdev@vger.kernel.org Cc: oe-kbuild-all@lists.linux.dev, jiawenwu@trustnetic.com, duanqiangwen@net-swift.com, linglingzhang@net-swift.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, Mengyuan Lou Subject: Re: [PATCH net v3] net: libwx: protect ring accesses with RCU Message-ID: <202608270436.2nJKiNXZ-lkp@intel.com> References: <20260824103606.303-1-mengyuanlou@net-swift.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260824103606.303-1-mengyuanlou@net-swift.com> Hi Mengyuan, kernel test robot noticed the following build warnings: [auto build test WARNING on net/main] url: https://github.com/intel-lab-lkp/linux/commits/Mengyuan-Lou/net-libwx-protect-ring-accesses-with-RCU/20260824-183606 base: net/main patch link: https://lore.kernel.org/r/20260824103606.303-1-mengyuanlou%40net-swift.com patch subject: [PATCH net v3] net: libwx: protect ring accesses with RCU config: microblaze-randconfig-r133-20260826 (https://download.01.org/0day-ci/archive/20260827/202608270436.2nJKiNXZ-lkp@intel.com/config) compiler: microblaze-linux-gcc (GCC) 8.5.0 sparse: v0.6.5-rc1 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260827/202608270436.2nJKiNXZ-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202608270436.2nJKiNXZ-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> drivers/net/ethernet/wangxun/libwx/wx_vf_common.c:208:54: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct wx_ring *rx_ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_vf_common.c:208:54: sparse: expected struct wx_ring *rx_ring drivers/net/ethernet/wangxun/libwx/wx_vf_common.c:208:54: sparse: got struct wx_ring [noderef] __rcu * -- >> drivers/net/ethernet/wangxun/libwx/wx_vf_lib.c:179:56: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct wx_ring *ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_vf_lib.c:179:56: sparse: expected struct wx_ring *ring drivers/net/ethernet/wangxun/libwx/wx_vf_lib.c:179:56: sparse: got struct wx_ring [noderef] __rcu * -- >> drivers/net/ethernet/wangxun/libwx/wx_ethtool.c:158:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct wx_ring *ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_ethtool.c:158:22: sparse: expected struct wx_ring *ring drivers/net/ethernet/wangxun/libwx/wx_ethtool.c:158:22: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_ethtool.c:173:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct wx_ring *ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_ethtool.c:173:22: sparse: expected struct wx_ring *ring drivers/net/ethernet/wangxun/libwx/wx_ethtool.c:173:22: sparse: got struct wx_ring [noderef] __rcu * >> drivers/net/ethernet/wangxun/libwx/wx_ethtool.c:808:36: sparse: sparse: dereference of noderef expression drivers/net/ethernet/wangxun/libwx/wx_ethtool.c:810:36: sparse: sparse: dereference of noderef expression -- >> drivers/net/ethernet/wangxun/libwx/wx_lib.c:1717:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct wx_ring *tx_ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:1717:17: sparse: expected struct wx_ring *tx_ring drivers/net/ethernet/wangxun/libwx/wx_lib.c:1717:17: sparse: got struct wx_ring [noderef] __rcu * >> drivers/net/ethernet/wangxun/libwx/wx_lib.c:2662:45: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct wx_ring *rx_ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:2662:45: sparse: expected struct wx_ring *rx_ring drivers/net/ethernet/wangxun/libwx/wx_lib.c:2662:45: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_lib.c:2704:49: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct wx_ring *rx_ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:2704:49: sparse: expected struct wx_ring *rx_ring drivers/net/ethernet/wangxun/libwx/wx_lib.c:2704:49: sparse: got struct wx_ring [noderef] __rcu * >> drivers/net/ethernet/wangxun/libwx/wx_lib.c:2778:45: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct wx_ring *tx_ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:2778:45: sparse: expected struct wx_ring *tx_ring drivers/net/ethernet/wangxun/libwx/wx_lib.c:2778:45: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_lib.c:2826:49: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct wx_ring *tx_ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:2826:49: sparse: expected struct wx_ring *tx_ring drivers/net/ethernet/wangxun/libwx/wx_lib.c:2826:49: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_lib.c:2936:56: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct wx_ring *rx_ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:2936:56: sparse: expected struct wx_ring *rx_ring drivers/net/ethernet/wangxun/libwx/wx_lib.c:2936:56: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_lib.c:2948:49: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct wx_ring *rx_ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:2948:49: sparse: expected struct wx_ring *rx_ring drivers/net/ethernet/wangxun/libwx/wx_lib.c:2948:49: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_lib.c:3039:56: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct wx_ring *tx_ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:3039:56: sparse: expected struct wx_ring *tx_ring drivers/net/ethernet/wangxun/libwx/wx_lib.c:3039:56: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_lib.c:3051:49: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct wx_ring *tx_ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:3051:49: sparse: expected struct wx_ring *tx_ring drivers/net/ethernet/wangxun/libwx/wx_lib.c:3051:49: sparse: got struct wx_ring [noderef] __rcu * >> drivers/net/ethernet/wangxun/libwx/wx_lib.c:3327:58: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const * @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:3327:58: sparse: expected void const * drivers/net/ethernet/wangxun/libwx/wx_lib.c:3327:58: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_lib.c:3343:57: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct wx_ring *tx_ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:3343:57: sparse: expected struct wx_ring *tx_ring drivers/net/ethernet/wangxun/libwx/wx_lib.c:3343:57: sparse: got struct wx_ring [noderef] __rcu * >> drivers/net/ethernet/wangxun/libwx/wx_lib.c:3345:43: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void * @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:3345:43: sparse: expected void * drivers/net/ethernet/wangxun/libwx/wx_lib.c:3345:43: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_lib.c:3355:58: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const * @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:3355:58: sparse: expected void const * drivers/net/ethernet/wangxun/libwx/wx_lib.c:3355:58: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_lib.c:3371:57: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct wx_ring *rx_ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:3371:57: sparse: expected struct wx_ring *rx_ring drivers/net/ethernet/wangxun/libwx/wx_lib.c:3371:57: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_lib.c:3372:43: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void * @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_lib.c:3372:43: sparse: expected void * drivers/net/ethernet/wangxun/libwx/wx_lib.c:3372:43: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_lib.c: note: in included file (through include/linux/if_ether.h, include/linux/etherdevice.h): include/linux/skbuff.h:2904:28: sparse: sparse: unsigned value that used to be signed checked against zero? include/linux/skbuff.h:2904:28: sparse: signed value source >> drivers/net/ethernet/wangxun/libwx/wx_lib.c:2061:36: sparse: sparse: dereference of noderef expression drivers/net/ethernet/wangxun/libwx/wx_lib.c:2068:36: sparse: sparse: dereference of noderef expression drivers/net/ethernet/wangxun/libwx/wx_lib.c:2075:36: sparse: sparse: dereference of noderef expression drivers/net/ethernet/wangxun/libwx/wx_lib.c:2080:36: sparse: sparse: dereference of noderef expression drivers/net/ethernet/wangxun/libwx/wx_lib.c:2101:28: sparse: sparse: dereference of noderef expression drivers/net/ethernet/wangxun/libwx/wx_lib.c:2104:28: sparse: sparse: dereference of noderef expression -- >> drivers/net/ethernet/wangxun/libwx/wx_hw.c:1602:51: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct wx_ring *ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_hw.c:1602:51: sparse: expected struct wx_ring *ring drivers/net/ethernet/wangxun/libwx/wx_hw.c:1602:51: sparse: got struct wx_ring [noderef] __rcu * >> drivers/net/ethernet/wangxun/libwx/wx_hw.c:1800:25: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct wx_ring *rx_ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_hw.c:1800:25: sparse: expected struct wx_ring *rx_ring drivers/net/ethernet/wangxun/libwx/wx_hw.c:1800:25: sparse: got struct wx_ring [noderef] __rcu * >> drivers/net/ethernet/wangxun/libwx/wx_hw.c:2025:53: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct wx_ring *ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_hw.c:2025:53: sparse: expected struct wx_ring *ring drivers/net/ethernet/wangxun/libwx/wx_hw.c:2025:53: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_hw.c:2251:53: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct wx_ring *ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_hw.c:2251:53: sparse: expected struct wx_ring *ring drivers/net/ethernet/wangxun/libwx/wx_hw.c:2251:53: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_hw.c:2842:58: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct wx_ring *ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_hw.c:2842:58: sparse: expected struct wx_ring *ring drivers/net/ethernet/wangxun/libwx/wx_hw.c:2842:58: sparse: got struct wx_ring [noderef] __rcu * drivers/net/ethernet/wangxun/libwx/wx_hw.c:2845:59: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct wx_ring *ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/libwx/wx_hw.c:2845:59: sparse: expected struct wx_ring *ring drivers/net/ethernet/wangxun/libwx/wx_hw.c:2845:59: sparse: got struct wx_ring [noderef] __rcu * -- >> drivers/net/ethernet/wangxun/ngbe/ngbe_ethtool.c:40:36: sparse: sparse: dereference of noderef expression drivers/net/ethernet/wangxun/ngbe/ngbe_ethtool.c:42:36: sparse: sparse: dereference of noderef expression -- >> drivers/net/ethernet/wangxun/ngbe/ngbe_main.c:409:52: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct wx_ring *ring @@ got struct wx_ring [noderef] __rcu * @@ drivers/net/ethernet/wangxun/ngbe/ngbe_main.c:409:52: sparse: expected struct wx_ring *ring drivers/net/ethernet/wangxun/ngbe/ngbe_main.c:409:52: sparse: got struct wx_ring [noderef] __rcu * >> drivers/net/ethernet/wangxun/ngbe/ngbe_main.c:425:41: sparse: sparse: dereference of noderef expression vim +1717 drivers/net/ethernet/wangxun/libwx/wx_lib.c 09a508800952f8 Mengyuan Lou 2023-02-03 1696 09a508800952f8 Mengyuan Lou 2023-02-03 1697 netdev_tx_t wx_xmit_frame(struct sk_buff *skb, 09a508800952f8 Mengyuan Lou 2023-02-03 1698 struct net_device *netdev) 09a508800952f8 Mengyuan Lou 2023-02-03 1699 { 09a508800952f8 Mengyuan Lou 2023-02-03 1700 unsigned int r_idx = skb->queue_mapping; 09a508800952f8 Mengyuan Lou 2023-02-03 1701 struct wx *wx = netdev_priv(netdev); 09a508800952f8 Mengyuan Lou 2023-02-03 1702 struct wx_ring *tx_ring; 09a508800952f8 Mengyuan Lou 2023-02-03 1703 09a508800952f8 Mengyuan Lou 2023-02-03 1704 if (!netif_carrier_ok(netdev)) { 09a508800952f8 Mengyuan Lou 2023-02-03 1705 dev_kfree_skb_any(skb); 09a508800952f8 Mengyuan Lou 2023-02-03 1706 return NETDEV_TX_OK; 09a508800952f8 Mengyuan Lou 2023-02-03 1707 } 09a508800952f8 Mengyuan Lou 2023-02-03 1708 09a508800952f8 Mengyuan Lou 2023-02-03 1709 /* The minimum packet size for olinfo paylen is 17 so pad the skb 09a508800952f8 Mengyuan Lou 2023-02-03 1710 * in order to meet this minimum size requirement. 09a508800952f8 Mengyuan Lou 2023-02-03 1711 */ 09a508800952f8 Mengyuan Lou 2023-02-03 1712 if (skb_put_padto(skb, 17)) 09a508800952f8 Mengyuan Lou 2023-02-03 1713 return NETDEV_TX_OK; 09a508800952f8 Mengyuan Lou 2023-02-03 1714 09a508800952f8 Mengyuan Lou 2023-02-03 1715 if (r_idx >= wx->num_tx_queues) 09a508800952f8 Mengyuan Lou 2023-02-03 1716 r_idx = r_idx % wx->num_tx_queues; 09a508800952f8 Mengyuan Lou 2023-02-03 @1717 tx_ring = wx->tx_ring[r_idx]; 09a508800952f8 Mengyuan Lou 2023-02-03 1718 09a508800952f8 Mengyuan Lou 2023-02-03 1719 return wx_xmit_frame_ring(skb, tx_ring); 09a508800952f8 Mengyuan Lou 2023-02-03 1720 } 09a508800952f8 Mengyuan Lou 2023-02-03 1721 EXPORT_SYMBOL(wx_xmit_frame); 09a508800952f8 Mengyuan Lou 2023-02-03 1722 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki