tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-4.19 head: 82172a1aab828c57e585665010f2488972ebc69a commit: 82172a1aab828c57e585665010f2488972ebc69a [7/7] CHROMIUM: media: platform: mtk-mdp3: add debug function config: arm64-chromiumos-arm64-customedconfig-chrome-os:chromeos-4.19:a4425f5643abe8fe5df8bc6e171bfd18e7a36124 (attached as .config) compiler: aarch64-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 git checkout 82172a1aab828c57e585665010f2488972ebc69a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from include/linux/printk.h:7, from include/linux/kernel.h:14, from include/asm-generic/bug.h:18, from arch/arm64/include/asm/bug.h:37, from include/linux/bug.h:5, from include/linux/io.h:23, from drivers/media/platform/mtk-mdp3/mtk-mdp3-debug.c:17: drivers/media/platform/mtk-mdp3/mtk-mdp3-debug.c: In function 'mdp_alloc_reference_VA_by_name': 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */ | ^~~~~~ include/linux/kern_levels.h:14:19: note: in expansion of macro 'KERN_SOH' 14 | #define KERN_INFO KERN_SOH "6" /* informational */ | ^~~~~~~~ include/linux/printk.h:310:9: note: in expansion of macro 'KERN_INFO' 310 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) | ^~~~~~~~~ drivers/media/platform/mtk-mdp3/mtk-mdp3-core.h:67:4: note: in expansion of macro 'pr_info' 67 | pr_info("[MTK-MDP3] %d %s:%d: " fmt "\n",\ | ^~~~~~~ drivers/media/platform/mtk-mdp3/mtk-mdp3-debug.c:87:2: note: in expansion of macro 'mdp_dbg' 87 | mdp_dbg(2, "DEV: VA ref(%s): 0x%lx\n", ref_name, VA); | ^~~~~~~ drivers/media/platform/mtk-mdp3/mtk-mdp3-debug.c:87:35: note: format string is defined here 87 | mdp_dbg(2, "DEV: VA ref(%s): 0x%lx\n", ref_name, VA); | ~~^ | | | long unsigned int | %p In file included from include/linux/printk.h:7, from include/linux/kernel.h:14, from include/asm-generic/bug.h:18, from arch/arm64/include/asm/bug.h:37, from include/linux/bug.h:5, from include/linux/io.h:23, from drivers/media/platform/mtk-mdp3/mtk-mdp3-debug.c:17: drivers/media/platform/mtk-mdp3/mtk-mdp3-debug.c: In function 'mdp_init_module_base_VA': include/linux/kern_levels.h:5:18: error: format '%lx' expects argument of type 'long unsigned int', but argument 5 has type 'void *' [-Werror=format=] 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */ | ^~~~~~ include/linux/kern_levels.h:14:19: note: in expansion of macro 'KERN_SOH' 14 | #define KERN_INFO KERN_SOH "6" /* informational */ | ^~~~~~~~ include/linux/printk.h:310:9: note: in expansion of macro 'KERN_INFO' 310 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__) | ^~~~~~~~~ drivers/media/platform/mtk-mdp3/mtk-mdp3-core.h:67:4: note: in expansion of macro 'pr_info' 67 | pr_info("[MTK-MDP3] %d %s:%d: " fmt "\n",\ | ^~~~~~~ drivers/media/platform/mtk-mdp3/mtk-mdp3-debug.c:107:3: note: in expansion of macro 'mdp_dbg' 107 | mdp_dbg(2, "MDP_RDMA va: 0x%lx\n", va); | ^~~~~~~ drivers/media/platform/mtk-mdp3/mtk-mdp3-debug.c:107:32: note: format string is defined here 107 | mdp_dbg(2, "MDP_RDMA va: 0x%lx\n", va); | ~~^ | | | long unsigned int | %p cc1: all warnings being treated as errors vim +5 include/linux/kern_levels.h 314ba3520e513a Joe Perches 2012-07-30 4 04d2c8c83d0e3a Joe Perches 2012-07-30 @5 #define KERN_SOH "\001" /* ASCII Start Of Header */ 04d2c8c83d0e3a Joe Perches 2012-07-30 6 #define KERN_SOH_ASCII '\001' 04d2c8c83d0e3a Joe Perches 2012-07-30 7 :::::: The code at line 5 was first introduced by commit :::::: 04d2c8c83d0e3ac5f78aeede51babb3236200112 printk: convert the format for KERN_<LEVEL> to a 2 byte pattern :::::: TO: Joe Perches <joe(a)perches.com&gt; :::::: CC: Linus Torvalds <torvalds(a)linux-foundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org