From: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
To: kernel test robot <lkp@intel.com>
Cc: oe-kbuild-all@lists.linux.dev,
Andrew Morton <akpm@linux-foundation.org>,
Linux Memory Management List <linux-mm@kvack.org>,
Vlastimil Babka <vbabka@suse.cz>
Subject: Re: [akpm-mm:mm-unstable 106/111] include/linux/kern_levels.h:5:25: warning: unknown conversion type character 'b' in format
Date: Fri, 31 Jan 2025 10:07:59 +0000 [thread overview]
Message-ID: <4b879d9a-2d38-4788-9475-b81ae34eb886@lucifer.local> (raw)
In-Reply-To: <202501311708.dRI35epU-lkp@intel.com>
On Fri, Jan 31, 2025 at 05:43:28PM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable
> head: f5604ad70091eabe663ea7106ced99449d653320
> commit: 951452b2ec82d352a69f14cfffdeb7c08461eefb [106/111] mm: further refactor commit_merge()
> config: x86_64-buildonly-randconfig-001-20250131 (https://download.01.org/0day-ci/archive/20250131/202501311708.dRI35epU-lkp@intel.com/config)
> compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250131/202501311708.dRI35epU-lkp@intel.com/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202501311708.dRI35epU-lkp@intel.com/
>
> All warnings (new ones prefixed by >>):
>
> In file included from include/linux/kernel.h:31,
> from mm/debug.c:9:
> mm/debug.c: In function 'dump_vmg':
> >> include/linux/kern_levels.h:5:25: warning: unknown conversion type character 'b' in format [-Wformat=]
> 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */
Well that'll teach me for assuming a compiler with CONFIG_WERROR on will
actually... report warnings as errors. Apparently not.
Will send a follow up fix-patch...
> | ^~~~~~
> include/linux/printk.h:473:25: note: in definition of macro 'printk_index_wrap'
> 473 | _p_func(_fmt, ##__VA_ARGS__); \
> | ^~~~
> include/linux/printk.h:554:9: note: in expansion of macro 'printk'
> 554 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
> | ^~~~~~
> include/linux/kern_levels.h:12:25: note: in expansion of macro 'KERN_SOH'
> 12 | #define KERN_WARNING KERN_SOH "4" /* warning conditions */
> | ^~~~~~~~
> include/linux/printk.h:554:16: note: in expansion of macro 'KERN_WARNING'
> 554 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
> | ^~~~~~~~~~~~
> mm/debug.c:262:9: note: in expansion of macro 'pr_warn'
> 262 | pr_warn("vmg %px state: mm %px pgoff %lx\n"
> | ^~~~~~~
> >> include/linux/kern_levels.h:5:25: warning: unknown conversion type character 'b' in format [-Wformat=]
> 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */
> | ^~~~~~
> include/linux/printk.h:473:25: note: in definition of macro 'printk_index_wrap'
> 473 | _p_func(_fmt, ##__VA_ARGS__); \
> | ^~~~
> include/linux/printk.h:554:9: note: in expansion of macro 'printk'
> 554 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
> | ^~~~~~
> include/linux/kern_levels.h:12:25: note: in expansion of macro 'KERN_SOH'
> 12 | #define KERN_WARNING KERN_SOH "4" /* warning conditions */
> | ^~~~~~~~
> include/linux/printk.h:554:16: note: in expansion of macro 'KERN_WARNING'
> 554 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
> | ^~~~~~~~~~~~
> mm/debug.c:262:9: note: in expansion of macro 'pr_warn'
> 262 | pr_warn("vmg %px state: mm %px pgoff %lx\n"
> | ^~~~~~~
> >> include/linux/kern_levels.h:5:25: warning: unknown conversion type character 'b' in format [-Wformat=]
> 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */
> | ^~~~~~
> include/linux/printk.h:473:25: note: in definition of macro 'printk_index_wrap'
> 473 | _p_func(_fmt, ##__VA_ARGS__); \
> | ^~~~
> include/linux/printk.h:554:9: note: in expansion of macro 'printk'
> 554 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
> | ^~~~~~
> include/linux/kern_levels.h:12:25: note: in expansion of macro 'KERN_SOH'
> 12 | #define KERN_WARNING KERN_SOH "4" /* warning conditions */
> | ^~~~~~~~
> include/linux/printk.h:554:16: note: in expansion of macro 'KERN_WARNING'
> 554 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
> | ^~~~~~~~~~~~
> mm/debug.c:262:9: note: in expansion of macro 'pr_warn'
> 262 | pr_warn("vmg %px state: mm %px pgoff %lx\n"
> | ^~~~~~~
> >> include/linux/kern_levels.h:5:25: warning: too many arguments for format [-Wformat-extra-args]
> 5 | #define KERN_SOH "\001" /* ASCII Start Of Header */
> | ^~~~~~
> include/linux/printk.h:473:25: note: in definition of macro 'printk_index_wrap'
> 473 | _p_func(_fmt, ##__VA_ARGS__); \
> | ^~~~
> include/linux/printk.h:554:9: note: in expansion of macro 'printk'
> 554 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
> | ^~~~~~
> include/linux/kern_levels.h:12:25: note: in expansion of macro 'KERN_SOH'
> 12 | #define KERN_WARNING KERN_SOH "4" /* warning conditions */
> | ^~~~~~~~
> include/linux/printk.h:554:16: note: in expansion of macro 'KERN_WARNING'
> 554 | printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
> | ^~~~~~~~~~~~
> mm/debug.c:262:9: note: in expansion of macro 'pr_warn'
> 262 | pr_warn("vmg %px state: mm %px pgoff %lx\n"
> | ^~~~~~~
>
>
> vim +/b +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@perches.com>
> :::::: CC: Linus Torvalds <torvalds@linux-foundation.org>
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki
next prev parent reply other threads:[~2025-01-31 10:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-31 9:43 kernel test robot
2025-01-31 10:07 ` Lorenzo Stoakes [this message]
2025-01-31 12:27 ` Lorenzo Stoakes
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