tree: https://git.kernel.org/pub/scm/linux/kernel/git/mhiramat/linux.git kprobes/fixes head: dfa160b26549af888185cb9d3001b577ce755dd3 commit: 9eb569267490d4537bd3ea1819f6cdfc03e986be [2/3] powerpc/kprobes: Fix alloc_optinsn_page() to use all area of optinsn_slot config: powerpc-allyesconfig (https://download.01.org/0day-ci/archive/20220114/202201141214.4SkSLX9S-lk...) compiler: powerpc-linux-gcc (GCC) 11.2.0 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/fixes git checkout 9eb569267490d4537bd3ea1819f6cdfc03e986be # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash 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 arch/powerpc/include/asm/bug.h:149, from include/linux/bug.h:5, from arch/powerpc/include/asm/cmpxchg.h:8, from arch/powerpc/include/asm/atomic.h:11, from include/linux/atomic.h:7, from include/linux/cpumask.h:13, from include/linux/smp.h:13, from include/linux/lockdep.h:14, from include/linux/mutex.h:17, from include/linux/notifier.h:14, from include/linux/kprobes.h:21, from arch/powerpc/kernel/optprobes.c:8: arch/powerpc/kernel/optprobes.c: In function 'free_optinsn_page': 99 | __warn_printk(arg); \ | ^~~~~~~~~~~~~ include/asm-generic/bug.h:132:17: note: in expansion of macro '__WARN_printf' 132 | __WARN_printf(TAINT_WARN, format); \ | ^~~~~~~~~~~~~ include/linux/once_lite.h:19:25: note: in expansion of macro 'WARN' 19 | func(__VA_ARGS__); \ | ^~~~ include/asm-generic/bug.h:150:9: note: in expansion of macro 'DO_ONCE_LITE_IF' 150 | DO_ONCE_LITE_IF(condition, WARN, 1, format) | ^~~~~~~~~~~~~~~ arch/powerpc/kernel/optprobes.c:49:9: note: in expansion of macro 'WARN_ONCE' 49 | WARN_ONCE(idx & (PAGE_SIZE - 1)); | ^~~~~~~~~ include/asm-generic/bug.h:95:28: note: declared here 95 | extern __printf(1, 2) void __warn_printk(const char *fmt, ...); | ^~~~~~~~~~~~~ 99 | __warn_printk(arg); \ | ^~~~~~~~~~~~~ include/asm-generic/bug.h:132:17: note: in expansion of macro '__WARN_printf' 132 | __WARN_printf(TAINT_WARN, format); \ | ^~~~~~~~~~~~~ include/linux/once_lite.h:19:25: note: in expansion of macro 'WARN' 19 | func(__VA_ARGS__); \ | ^~~~ include/asm-generic/bug.h:150:9: note: in expansion of macro 'DO_ONCE_LITE_IF' 150 | DO_ONCE_LITE_IF(condition, WARN, 1, format) | ^~~~~~~~~~~~~~~ arch/powerpc/kernel/optprobes.c:51:13: note: in expansion of macro 'WARN_ONCE' 51 | if (WARN_ONCE(idx >= OPTINSN_SLOT_PAGES)) | ^~~~~~~~~ include/asm-generic/bug.h:95:28: note: declared here 95 | extern __printf(1, 2) void __warn_printk(const char *fmt, ...); | ^~~~~~~~~~~~~ vim +/__warn_printk +99 include/asm-generic/bug.h ^1da177e4c3f41 Linus Torvalds 2005-04-16 67 af9379c7121d55 David Brownell 2009-01-06 68 /* af9379c7121d55 David Brownell 2009-01-06 69 * WARN(), WARN_ON(), WARN_ON_ONCE, and so on can be used to report 96c6a32ccb55a3 Dmitry Vyukov 2018-08-21 70 * significant kernel issues that need prompt attention if they should ever 96c6a32ccb55a3 Dmitry Vyukov 2018-08-21 71 * appear at runtime. 96c6a32ccb55a3 Dmitry Vyukov 2018-08-21 72 * 96c6a32ccb55a3 Dmitry Vyukov 2018-08-21 73 * Do not use these macros when checking for invalid external inputs 96c6a32ccb55a3 Dmitry Vyukov 2018-08-21 74 * (e.g. invalid system call arguments, or invalid data coming from 96c6a32ccb55a3 Dmitry Vyukov 2018-08-21 75 * network/devices), and on transient conditions like ENOMEM or EAGAIN. 96c6a32ccb55a3 Dmitry Vyukov 2018-08-21 76 * These macros should be used for recoverable kernel issues only. 96c6a32ccb55a3 Dmitry Vyukov 2018-08-21 77 * For invalid external inputs, transient conditions, etc use 96c6a32ccb55a3 Dmitry Vyukov 2018-08-21 78 * pr_err[_once/_ratelimited]() followed by dump_stack(), if necessary. 96c6a32ccb55a3 Dmitry Vyukov 2018-08-21 79 * Do not include "BUG"/"WARNING" in format strings manually to make these 96c6a32ccb55a3 Dmitry Vyukov 2018-08-21 80 * conditions distinguishable from kernel issues. 96c6a32ccb55a3 Dmitry Vyukov 2018-08-21 81 * 96c6a32ccb55a3 Dmitry Vyukov 2018-08-21 82 * Use the versions with printk format strings to provide better diagnostics. af9379c7121d55 David Brownell 2009-01-06 83 */ d4bce140b4e739 Kees Cook 2019-09-25 84 #ifndef __WARN_FLAGS b9075fa968a0a4 Joe Perches 2011-10-31 85 extern __printf(4, 5) ee8711336c5170 Kees Cook 2019-09-25 86 void warn_slowpath_fmt(const char *file, const int line, unsigned taint, b9075fa968a0a4 Joe Perches 2011-10-31 87 const char *fmt, ...); f2f84b05e02b77 Kees Cook 2019-09-25 88 #define __WARN() __WARN_printf(TAINT_WARN, NULL) 5916d5f9b33473 Thomas Gleixner 2020-03-13 89 #define __WARN_printf(taint, arg...) do { \ 5916d5f9b33473 Thomas Gleixner 2020-03-13 90 instrumentation_begin(); \ 5916d5f9b33473 Thomas Gleixner 2020-03-13 91 warn_slowpath_fmt(__FILE__, __LINE__, taint, arg); \ 5916d5f9b33473 Thomas Gleixner 2020-03-13 92 instrumentation_end(); \ 5916d5f9b33473 Thomas Gleixner 2020-03-13 93 } while (0) a8f18b909c0a3f Arjan van de Ven 2008-07-25 94 #else a7bed27af194aa Kees Cook 2017-11-17 95 extern __printf(1, 2) void __warn_printk(const char *fmt, ...); a44f71a9ab99b5 Kees Cook 2019-09-25 96 #define __WARN() __WARN_FLAGS(BUGFLAG_TAINT(TAINT_WARN)) d4bce140b4e739 Kees Cook 2019-09-25 97 #define __WARN_printf(taint, arg...) do { \ 5916d5f9b33473 Thomas Gleixner 2020-03-13 98 instrumentation_begin(); \ d4bce140b4e739 Kees Cook 2019-09-25 @99 __warn_printk(arg); \ a44f71a9ab99b5 Kees Cook 2019-09-25 100 __WARN_FLAGS(BUGFLAG_NO_CUT_HERE | BUGFLAG_TAINT(taint));\ 5916d5f9b33473 Thomas Gleixner 2020-03-13 101 instrumentation_end(); \ 6b15f678fb7d5e Drew Davenport 2019-07-16 102 } while (0) 2da1ead4d5f7fa Kees Cook 2019-09-25 103 #define WARN_ON_ONCE(condition) ({ \ 2da1ead4d5f7fa Kees Cook 2019-09-25 104 int __ret_warn_on = !!(condition); \ 2da1ead4d5f7fa Kees Cook 2019-09-25 105 if (unlikely(__ret_warn_on)) \ 2da1ead4d5f7fa Kees Cook 2019-09-25 106 __WARN_FLAGS(BUGFLAG_ONCE | \ 2da1ead4d5f7fa Kees Cook 2019-09-25 107 BUGFLAG_TAINT(TAINT_WARN)); \ 2da1ead4d5f7fa Kees Cook 2019-09-25 108 unlikely(__ret_warn_on); \ 2da1ead4d5f7fa Kees Cook 2019-09-25 109 }) 3a6a62f96f168d Olof Johansson 2008-01-30 110 #endif 3a6a62f96f168d Olof Johansson 2008-01-30 111 :::::: The code at line 99 was first introduced by commit :::::: d4bce140b4e739bceb4e239d4842cf8f346c1e0f bug: clean up helper macros to remove __WARN_TAINT() :::::: TO: Kees Cook <keescook(a)chromium.org&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