Messages in this thread |  | | Date | Mon, 2 Dec 2024 04:53:39 +0800 | | From | kernel test robot <> | | Subject | arch/x86/kernel/callthunks.c:332:35: warning: '%lu' directive writing between 1 and 10 bytes into a region of size 7 |
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Hi Thomas,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: bcc8eda6d34934d80b96adb8dc4ff5dfc632a53a commit: f5c1bb2afe93396d41c5cbdcb909b08a75b8dde4 x86/calldepth: Add ret/call counting for debug date: 2 years, 2 months ago config: x86_64-randconfig-103-20241116 (https://download.01.org/0day-ci/archive/20241202/202412020442.t7EqpHvu-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241202/202412020442.t7EqpHvu-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/202412020442.t7EqpHvu-lkp@intel.com/
All warnings (new ones prefixed by >>):
arch/x86/kernel/callthunks.c: In function 'callthunks_debugfs_init': >> arch/x86/kernel/callthunks.c:332:35: warning: '%lu' directive writing between 1 and 10 bytes into a region of size 7 [-Wformat-overflow=] 332 | sprintf(name, "cpu%lu", cpu); | ^~~ arch/x86/kernel/callthunks.c:332:31: note: directive argument in the range [0, 4294967294] 332 | sprintf(name, "cpu%lu", cpu); | ^~~~~~~~ arch/x86/kernel/callthunks.c:332:17: note: 'sprintf' output between 5 and 14 bytes into a destination of size 10 332 | sprintf(name, "cpu%lu", cpu); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +332 arch/x86/kernel/callthunks.c
321 322 static int __init callthunks_debugfs_init(void) 323 { 324 struct dentry *dir; 325 unsigned long cpu; 326 327 dir = debugfs_create_dir("callthunks", NULL); 328 for_each_possible_cpu(cpu) { 329 void *arg = (void *)cpu; 330 char name [10]; 331 > 332 sprintf(name, "cpu%lu", cpu);
-- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
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