Messages in this thread | | | Date | Thu, 19 Oct 2023 05:46:09 +0800 | From | kernel test robot <> | Subject | drivers/pci/controller/dwc/pcie-designware.c:898:50: warning: '%d' directive output may be truncated writing between 1 and 11 bytes into a region of size 3 |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: dd72f9c7e512da377074d47d990564959b772643 commit: 939fbcd568fd294034c96edc92ff5b9de1a5fce8 PCI: dwc: Add Root Port and Endpoint controller eDMA engine support date: 8 months ago config: x86_64-buildonly-randconfig-r001-20230530 (https://download.01.org/0day-ci/archive/20231019/202310190534.kkbtdHuH-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231019/202310190534.kkbtdHuH-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 <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202310190534.kkbtdHuH-lkp@intel.com/
All warnings (new ones prefixed by >>):
drivers/pci/controller/dwc/pcie-designware.c: In function 'dw_pcie_edma_detect': >> drivers/pci/controller/dwc/pcie-designware.c:898:50: warning: '%d' directive output may be truncated writing between 1 and 11 bytes into a region of size 3 [-Wformat-truncation=] 898 | snprintf(name, sizeof(name), "dma%d", pci->edma.nr_irqs); | ^~ In function 'dw_pcie_edma_irq_verify', inlined from 'dw_pcie_edma_detect' at drivers/pci/controller/dwc/pcie-designware.c:949:8: drivers/pci/controller/dwc/pcie-designware.c:898:46: note: directive argument in the range [-2147483648, 22] 898 | snprintf(name, sizeof(name), "dma%d", pci->edma.nr_irqs); | ^~~~~~~ drivers/pci/controller/dwc/pcie-designware.c:898:17: note: 'snprintf' output between 5 and 15 bytes into a destination of size 6 898 | snprintf(name, sizeof(name), "dma%d", pci->edma.nr_irqs); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +898 drivers/pci/controller/dwc/pcie-designware.c
878 879 static int dw_pcie_edma_irq_verify(struct dw_pcie *pci) 880 { 881 struct platform_device *pdev = to_platform_device(pci->dev); 882 u16 ch_cnt = pci->edma.ll_wr_cnt + pci->edma.ll_rd_cnt; 883 char name[6]; 884 int ret; 885 886 if (pci->edma.nr_irqs == 1) 887 return 0; 888 else if (pci->edma.nr_irqs > 1) 889 return pci->edma.nr_irqs != ch_cnt ? -EINVAL : 0; 890 891 ret = platform_get_irq_byname_optional(pdev, "dma"); 892 if (ret > 0) { 893 pci->edma.nr_irqs = 1; 894 return 0; 895 } 896 897 for (; pci->edma.nr_irqs < ch_cnt; pci->edma.nr_irqs++) { > 898 snprintf(name, sizeof(name), "dma%d", pci->edma.nr_irqs); 899 900 ret = platform_get_irq_byname_optional(pdev, name); 901 if (ret <= 0) 902 return -EINVAL; 903 } 904 905 return 0; 906 } 907
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