[mhiramat:kprobes/fixes 2/3] include/asm-generic/bug.h:99:17: error: too few arguments to function '__warn_printk'
From: kernel test robot
Date: Thu Jan 13 2022 - 23:30:48 EST
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-lkp@xxxxxxxxx/config)
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/?id=9eb569267490d4537bd3ea1819f6cdfc03e986be
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@xxxxxxxxx>
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':
>> include/asm-generic/bug.h:99:17: error: too few arguments to function '__warn_printk'
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, ...);
| ^~~~~~~~~~~~~
>> include/asm-generic/bug.h:99:17: error: too few arguments to function '__warn_printk'
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@xxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
---
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