tree: https://github.com/intel/linux-intel-lts.git 5.4/yocto head: be0f563c86400c13b89cfd69a1cd7ca33f21ed54 commit: be0f563c86400c13b89cfd69a1cd7ca33f21ed54 [13/13] net: stmmac: fix wrongly assigned switch case during free irq config: xtensa-allyesconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel/linux-intel-lts/commit/be0f563c86400c13b89cfd69a... git remote add intel-linux-intel-lts https://github.com/intel/linux-intel-lts.git git fetch --no-tags intel-linux-intel-lts 5.4/yocto git checkout be0f563c86400c13b89cfd69a1cd7ca33f21ed54 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from include/linux/err.h:5, from include/linux/clk.h:12, from drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:17: include/linux/scatterlist.h: In function 'sg_set_buf': arch/xtensa/include/asm/page.h:182:9: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 182 | ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr) | ^~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~ arch/xtensa/include/asm/page.h:190:32: note: in expansion of macro 'pfn_valid' 190 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | ^~~~~~~~~ include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~~~~~~~~~~ In file included from ./arch/xtensa/include/generated/asm/bug.h:1, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from arch/xtensa/include/asm/current.h:18, from include/linux/mutex.h:14, from include/linux/notifier.h:14, from include/linux/clk.h:14, from drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:17: include/linux/dma-mapping.h: In function 'dma_map_resource': arch/xtensa/include/asm/page.h:182:9: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 182 | ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr) | ^~ include/asm-generic/bug.h:139:27: note: in definition of macro 'WARN_ON_ONCE' 139 | int __ret_warn_once = !!(condition); \ | ^~~~~~~~~ include/linux/dma-mapping.h:355:19: note: in expansion of macro 'pfn_valid' 355 | if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr)))) | ^~~~~~~~~ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c: In function 'stmmac_hwtstamp_set': drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:561:7: warning: variable 'xmac' set but not used [-Wunused-but-set-variable] 561 | bool xmac; | ^~~~ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c: At top level: drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1415:6: warning: no previous prototype for 'stmmac_alloc_rx_buffers' [-Wmissing-prototypes] 1415 | bool stmmac_alloc_rx_buffers(struct stmmac_rx_queue *rx_q, u32 count) | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c: In function 'init_dma_rx_desc_rings': drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1549:15: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 1549 | while (queue >= 0) { | ^~ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c: In function 'stmmac_rx_buf1_len': drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:4677:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable] 4677 | int ret, coe = priv->hw->rx_csum; | ^~~ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c: At top level: drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:5825:5: warning: no previous prototype for 'stmmac_all_queue_pairs_enable' [-Wmissing-prototypes] 5825 | int stmmac_all_queue_pairs_enable(struct stmmac_priv *priv) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:5889:5: warning: no previous prototype for 'stmmac_all_queue_pairs_disable' [-Wmissing-prototypes] 5889 | int stmmac_all_queue_pairs_disable(struct stmmac_priv *priv) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:5915:5: warning: no previous prototype for 'stmmac_xdp_xmit' [-Wmissing-prototypes] 5915 | int stmmac_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames, | ^~~~~~~~~~~~~~~ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:6615:6: warning: no previous prototype for 'stmmac_clean_all_tx_rings' [-Wmissing-prototypes] 6615 | void stmmac_clean_all_tx_rings(struct stmmac_priv *priv) | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c: In function 'stmmac_free_irq': 3259 | for (j = irq_idx - 1; j >= 0; j--) { | ^~~ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:3263:2: note: here 3263 | case REQ_IRQ_ERR_SFTY_UE: | ^~~~ vim +3259 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c c66f6c3775bed34 Thierry Reding 2017-03-10 3232 9eb600be731180f Ong Boon Leong 2019-07-26 3233 static void stmmac_free_irq(struct net_device *dev, 9eb600be731180f Ong Boon Leong 2019-07-26 3234 enum request_irq_err irq_err, int irq_idx) 9eb600be731180f Ong Boon Leong 2019-07-26 3235 { 9eb600be731180f Ong Boon Leong 2019-07-26 3236 struct stmmac_priv *priv = netdev_priv(dev); 9eb600be731180f Ong Boon Leong 2019-07-26 3237 int j; 9eb600be731180f Ong Boon Leong 2019-07-26 3238 9eb600be731180f Ong Boon Leong 2019-07-26 3239 switch (irq_err) { 9eb600be731180f Ong Boon Leong 2019-07-26 3240 case REQ_IRQ_ERR_ALL: 83a25aff8a4597c Lay, Kuan Loon 2018-11-12 3241 #ifdef CONFIG_STMMAC_NETWORK_PROXY 83a25aff8a4597c Lay, Kuan Loon 2018-11-12 3242 if (priv->netprox_irq > 0 && priv->netprox_irq != dev->irq) 83a25aff8a4597c Lay, Kuan Loon 2018-11-12 3243 free_irq(priv->netprox_irq, dev); 83a25aff8a4597c Lay, Kuan Loon 2018-11-12 3244 /* fall through */ 83a25aff8a4597c Lay, Kuan Loon 2018-11-12 3245 case REQ_IRQ_ERR_NETWORK_PROXY: 83a25aff8a4597c Lay, Kuan Loon 2018-11-12 3246 #endif 9eb600be731180f Ong Boon Leong 2019-07-26 3247 irq_idx = priv->plat->tx_queues_to_use; 9eb600be731180f Ong Boon Leong 2019-07-26 3248 /* fall through */ 9eb600be731180f Ong Boon Leong 2019-07-26 3249 case REQ_IRQ_ERR_TX: 9eb600be731180f Ong Boon Leong 2019-07-26 3250 for (j = irq_idx - 1; j >= 0; j--) { 9eb600be731180f Ong Boon Leong 2019-07-26 3251 if (priv->tx_irq[j] > 0) 56a2ef6888738a6 Ong Boon Leong 2019-09-23 3252 free_irq(priv->tx_irq[j], 56a2ef6888738a6 Ong Boon Leong 2019-09-23 3253 get_tx_queue(priv, j)); 9eb600be731180f Ong Boon Leong 2019-07-26 3254 } 56a2ef6888738a6 Ong Boon Leong 2019-09-23 3255 9eb600be731180f Ong Boon Leong 2019-07-26 3256 irq_idx = priv->plat->rx_queues_to_use; 9eb600be731180f Ong Boon Leong 2019-07-26 3257 /* fall through */ 9eb600be731180f Ong Boon Leong 2019-07-26 3258 case REQ_IRQ_ERR_RX: 9eb600be731180f Ong Boon Leong 2019-07-26 @3259 for (j = irq_idx - 1; j >= 0; j--) { 9eb600be731180f Ong Boon Leong 2019-07-26 3260 if (priv->rx_irq[j] > 0) 9eb600be731180f Ong Boon Leong 2019-07-26 3261 free_irq(priv->rx_irq[j], &priv->rx_queue[j]); 9eb600be731180f Ong Boon Leong 2019-07-26 3262 } be0f563c86400c1 Voon Weifeng 2020-08-26 3263 case REQ_IRQ_ERR_SFTY_UE: 9eb600be731180f Ong Boon Leong 2019-07-26 3264 if (priv->sfty_ue_irq > 0 && priv->sfty_ue_irq != dev->irq) 9eb600be731180f Ong Boon Leong 2019-07-26 3265 free_irq(priv->sfty_ue_irq, dev); 9eb600be731180f Ong Boon Leong 2019-07-26 3266 /* fall through */ be0f563c86400c1 Voon Weifeng 2020-08-26 3267 case REQ_IRQ_ERR_SFTY_CE: 9eb600be731180f Ong Boon Leong 2019-07-26 3268 if (priv->sfty_ce_irq > 0 && priv->sfty_ce_irq != dev->irq) 9eb600be731180f Ong Boon Leong 2019-07-26 3269 free_irq(priv->sfty_ce_irq, dev); 9eb600be731180f Ong Boon Leong 2019-07-26 3270 /* fall through */ be0f563c86400c1 Voon Weifeng 2020-08-26 3271 case REQ_IRQ_ERR_LPI: 9eb600be731180f Ong Boon Leong 2019-07-26 3272 if (priv->lpi_irq > 0 && priv->lpi_irq != dev->irq) 9eb600be731180f Ong Boon Leong 2019-07-26 3273 free_irq(priv->lpi_irq, dev); 9eb600be731180f Ong Boon Leong 2019-07-26 3274 /* fall through */ be0f563c86400c1 Voon Weifeng 2020-08-26 3275 case REQ_IRQ_ERR_WOL: 9eb600be731180f Ong Boon Leong 2019-07-26 3276 if (priv->wol_irq > 0 && priv->wol_irq != dev->irq) 9eb600be731180f Ong Boon Leong 2019-07-26 3277 free_irq(priv->wol_irq, dev); 9eb600be731180f Ong Boon Leong 2019-07-26 3278 /* fall through */ be0f563c86400c1 Voon Weifeng 2020-08-26 3279 case REQ_IRQ_ERR_MAC: 9eb600be731180f Ong Boon Leong 2019-07-26 3280 free_irq(dev->irq, dev); 9eb600be731180f Ong Boon Leong 2019-07-26 3281 /* fall through */ 9eb600be731180f Ong Boon Leong 2019-07-26 3282 case REQ_IRQ_ERR_NO: 9eb600be731180f Ong Boon Leong 2019-07-26 3283 /* If MAC IRQ request error, no more IRQ to free */ 9eb600be731180f Ong Boon Leong 2019-07-26 3284 break; 9eb600be731180f Ong Boon Leong 2019-07-26 3285 } 9eb600be731180f Ong Boon Leong 2019-07-26 3286 } 9eb600be731180f Ong Boon Leong 2019-07-26 3287 :::::: The code at line 3259 was first introduced by commit :::::: 9eb600be731180fd380fdc3d1ab11711a7a9521d net: stmmac: introduce MSI Interrupt routines for mac, safety, RX & TX :::::: TO: Ong Boon Leong <boon.leong.ong(a)intel.com&gt; :::::: CC: Voon Weifeng <weifeng.voon(a)intel.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org