tree: https://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git kprobes/kretprobe-stackfix head: 6e2b8966c87adc1be0fb4a386fb24ae438f4cb79 commit: 663b1b4caed9e4b0ad1be80b30851e68fb9a40eb [8/10] kprobes: Setup instruction pointer in __kretprobe_trampoline_handler config: sparc-randconfig-r001-20210316 (attached as .config) compiler: sparc64-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 git checkout 663b1b4caed9e4b0ad1be80b30851e68fb9a40eb # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sparc 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 arch/sparc/include/asm/thread_info_64.h:31, from arch/sparc/include/asm/thread_info.h:5, from include/linux/thread_info.h:58, from arch/sparc/include/asm/current.h:15, from include/linux/mutex.h:14, from include/linux/notifier.h:14, from include/linux/kprobes.h:22, from kernel/kprobes.c:21: kernel/kprobes.c: In function '__kretprobe_trampoline_handler': 67 | (regs)->tpc = (val); \ | ^ kernel/kprobes.c:1901:2: note: in expansion of macro 'instruction_pointer_set' 1901 | instruction_pointer_set(regs, correct_ret_addr); | ^~~~~~~~~~~~~~~~~~~~~~~ arch/sparc/include/asm/ptrace.h:68:16: warning: assignment to 'long unsigned int' from 'kprobe_opcode_t *' {aka 'unsigned int *'} makes integer from pointer without a cast [-Wint-conversion] 68 | (regs)->tnpc = (val)+4; \ | ^ kernel/kprobes.c:1901:2: note: in expansion of macro 'instruction_pointer_set' 1901 | instruction_pointer_set(regs, correct_ret_addr); | ^~~~~~~~~~~~~~~~~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for FRAME_POINTER Depends on DEBUG_KERNEL && (M68K || UML || SUPERH) || ARCH_WANT_FRAME_POINTERS || MCOUNT Selected by - LATENCYTOP && DEBUG_KERNEL && STACKTRACE_SUPPORT && PROC_FS && !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM && !ARC && !X86 - LOCKDEP && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT && !MIPS && !PPC && !ARM && !S390 && !MICROBLAZE && !ARC && !X86 vim +67 arch/sparc/include/asm/ptrace.h f3ec38d5135ca4 Sam Ravnborg 2009-01-02 62 dff933da765fd4 Al Viro 2012-09-26 63 #define force_successful_syscall_return() set_thread_noerror(1) f3ec38d5135ca4 Sam Ravnborg 2009-01-02 64 #define user_mode(regs) (!((regs)->tstate & TSTATE_PRIV)) f3ec38d5135ca4 Sam Ravnborg 2009-01-02 65 #define instruction_pointer(regs) ((regs)->tpc) e8f4aa6087fa80 Allen Pais 2016-10-13 66 #define instruction_pointer_set(regs, val) do { \ e8f4aa6087fa80 Allen Pais 2016-10-13 @67 (regs)->tpc = (val); \ e8f4aa6087fa80 Allen Pais 2016-10-13 68 (regs)->tnpc = (val)+4; \ e8f4aa6087fa80 Allen Pais 2016-10-13 69 } while (0) f3ec38d5135ca4 Sam Ravnborg 2009-01-02 70 #define user_stack_pointer(regs) ((regs)->u_regs[UREG_FP]) d7e7528bcd456f Eric Paris 2012-01-03 71 static inline int is_syscall_success(struct pt_regs *regs) d7e7528bcd456f Eric Paris 2012-01-03 72 { d7e7528bcd456f Eric Paris 2012-01-03 73 return !(regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY)); d7e7528bcd456f Eric Paris 2012-01-03 74 } d7e7528bcd456f Eric Paris 2012-01-03 75 :::::: The code at line 67 was first introduced by commit :::::: e8f4aa6087fa80732382881ef7c0c96733bb1984 sparc64:Support User Probes for sparc :::::: TO: Allen Pais <allen.pais(a)oracle.com&gt; :::::: CC: David S. Miller <davem(a)davemloft.net&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org