tree: https://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git kprobes/kretprobe-stackfix-v4 head: d7b4ac02b00f47d23a03df484e9a99d255f66082 commit: f0701abd896c12bfef69e7f6684572080d9b1e07 [1/12] ia64: kprobes: Fix to pass correct trampoline address to the handler config: ia64-allmodconfig (attached as .config) compiler: ia64-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://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git/commit... git remote add mhiramat https://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git git fetch --no-tags mhiramat kprobes/kretprobe-stackfix-v4 git checkout f0701abd896c12bfef69e7f6684572080d9b1e07 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): arch/ia64/kernel/kprobes.c: In function 'get_kprobe_inst': arch/ia64/kernel/kprobes.c:325:15: warning: variable 'template' set but not used [-Wunused-but-set-variable] 325 | unsigned int template; | ^~~~~~~~ arch/ia64/kernel/kprobes.c: At top level: arch/ia64/kernel/kprobes.c:399:15: warning: no previous prototype for 'trampoline_probe_handler' [-Wmissing-prototypes] 399 | int __kprobes trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs) | ^~~~~~~~~~~~~~~~~~~~~~~~ arch/ia64/kernel/kprobes.c: In function 'arch_init_kprobes': 922 | dereference_function_description(kretprobe_trampoline); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | dereference_function_descriptor 921 | trampoline_p.addr = | ^ cc1: some warnings being treated as errors Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for FRAME_POINTER Depends on DEBUG_KERNEL && (M68K || UML || SUPERH) || ARCH_WANT_FRAME_POINTERS Selected by - FAULT_INJECTION_STACKTRACE_FILTER && FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT && !X86_64 && !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !X86 vim +922 arch/ia64/kernel/kprobes.c 918 919 int __init arch_init_kprobes(void) 920 { 923 return register_kprobe(&trampoline_p); 924 } 925 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org