tree: https://github.com/jpirko/linux_mlxsw petrm_resilient head: 80746cff1944e716e426afec11340d5f5164895c commit: dae1ac8af0cc1e9f0b5967822be3aed69a3a7b14 [24/25] nexthop: Add support code for resilient ECMP groups [xxx] config: c6x-randconfig-r011-20201210 (attached as .config) compiler: c6x-elf-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/jpirko/linux_mlxsw/commit/dae1ac8af0cc1e9f0b5967822be3... git remote add jpirko-mlxsw https://github.com/jpirko/linux_mlxsw git fetch --no-tags jpirko-mlxsw petrm_resilient git checkout dae1ac8af0cc1e9f0b5967822be3aed69a3a7b14 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=c6x 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/printk.h:7, from include/linux/kernel.h:16, from include/asm-generic/bug.h:20, from arch/c6x/include/asm/bug.h:12, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from include/asm-generic/current.h:5, from ./arch/c6x/include/generated/asm/current.h:1, from include/linux/mutex.h:14, from include/linux/rtnetlink.h:6, from net/ipv4/nexthop.c:9: net/ipv4/nexthop.c: In function 'nh_res_table_upkeep': 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */ | ^~~~~~ include/linux/kern_levels.h:12:22: note: in expansion of macro 'KERN_SOH' 12 | #define KERN_WARNING KERN_SOH "4" /* warning conditions */ | ^~~~~~~~ net/ipv4/nexthop.c:1265:10: note: in expansion of macro 'KERN_WARNING' 1265 | printk(KERN_WARNING "next wakeup: %d\n", deadline - now); | ^~~~~~~~~~~~ net/ipv4/nexthop.c:1265:38: note: format string is defined here 1265 | printk(KERN_WARNING "next wakeup: %d\n", deadline - now); | ~^ | | | int | %ld net/ipv4/nexthop.c: In function 'rtm_to_nh_config': net/ipv4/nexthop.c:2371:41: warning: passing argument 3 of 'nh_check_attr_group' makes pointer from integer without a cast [-Wint-conversion] 2371 | err = nh_check_attr_group(net, tb, cfg->nh_grp_type, extack); | ~~~^~~~~~~~~~~~~ | | | u16 {aka short unsigned int} net/ipv4/nexthop.c:724:35: note: expected 'struct netlink_ext_ack *' but argument is of type 'u16' {aka 'short unsigned int'} 724 | struct netlink_ext_ack *extack) | ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~ net/ipv4/nexthop.c:2371:9: error: too many arguments to function 'nh_check_attr_group' 2371 | err = nh_check_attr_group(net, tb, cfg->nh_grp_type, extack); | ^~~~~~~~~~~~~~~~~~~ net/ipv4/nexthop.c:723:12: note: declared here 723 | static int nh_check_attr_group(struct net *net, struct nlattr *tb[], | ^~~~~~~~~~~~~~~~~~~ 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