* Re: [PATCH v3 1/2] vsprintf: Don't leak pointers for %ps without KALLSYMS enabled
[not found] <20261015-vsprintf_kallsym-v3-1-c175c27f38b7@linutronix.de>
@ 2026-10-16 3:28 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-10-16 3:28 UTC (permalink / raw)
To: Sebastian Andrzej Siewior, linux-kernel
Cc: oe-kbuild-all, Sebastian Andrzej Siewior, Andrew Morton,
Linux Memory Management List, Andy Shevchenko, Kees Cook,
Petr Mladek, Rasmus Villemoes, Sergey Senozhatsky, Steven Rostedt,
Tycho Andersen
Hi Sebastian,
kernel test robot noticed the following build warnings:
[auto build test WARNING on ec8bf8280261294a9b9b4520414b42704c7f9f6b]
url: https://github.com/intel-lab-lkp/linux/commits/Sebastian-Andrzej-Siewior/vsprintf-Don-t-leak-pointers-for-ps-without-KALLSYMS-enabled/20261015-180648
base: ec8bf8280261294a9b9b4520414b42704c7f9f6b
patch link: https://lore.kernel.org/r/20261015-vsprintf_kallsym-v3-1-c175c27f38b7%40linutronix.de
patch subject: [PATCH v3 1/2] vsprintf: Don't leak pointers for %ps without KALLSYMS enabled
config: openrisc-defconfig (https://download.01.org/0day-ci/archive/20261016/202610161107.ckH3ptvE-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261016/202610161107.ckH3ptvE-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/202610161107.ckH3ptvE-lkp@intel.com/
All warnings (new ones prefixed by >>):
lib/vsprintf.c: In function 'symbol_string':
>> lib/vsprintf.c:988:23: warning: variable 'value' set but not used [-Wunused-but-set-variable=]
988 | unsigned long value;
| ^~~~~
vim +/value +988 lib/vsprintf.c
1031bc589228ca3 Dmitry Monakhov 2015-04-13 983
cf3b429b03e827c Joe Perches 2010-05-24 984 static noinline_for_stack
cf3b429b03e827c Joe Perches 2010-05-24 985 char *symbol_string(char *buf, char *end, void *ptr,
b0d33c2bd77bcf2 Joe Perches 2012-12-12 986 struct printf_spec spec, const char *fmt)
0fe1ef24f7bd002 Linus Torvalds 2008-07-06 987 {
b0d33c2bd77bcf2 Joe Perches 2012-12-12 @988 unsigned long value;
0fe1ef24f7bd002 Linus Torvalds 2008-07-06 989 #ifdef CONFIG_KALLSYMS
0fe1ef24f7bd002 Linus Torvalds 2008-07-06 990 char sym[KSYM_SYMBOL_LEN];
b0d33c2bd77bcf2 Joe Perches 2012-12-12 991 #endif
b0d33c2bd77bcf2 Joe Perches 2012-12-12 992
b0d33c2bd77bcf2 Joe Perches 2012-12-12 993 if (fmt[1] == 'R')
b0d33c2bd77bcf2 Joe Perches 2012-12-12 994 ptr = __builtin_extract_return_addr(ptr);
b0d33c2bd77bcf2 Joe Perches 2012-12-12 995 value = (unsigned long)ptr;
b0d33c2bd77bcf2 Joe Perches 2012-12-12 996
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] only message in thread