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Sun, 03 Dec 2023 19:56:07 +0000 Date: Mon, 4 Dec 2023 03:55:46 +0800 From: kernel test robot To: Juergen Gross Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, David Vrabel , Paul Durrant Subject: drivers/xen/manage.c:337:60: warning: '%s' directive output may be truncated writing up to 95 bytes into a region of size 12 Message-ID: <202312040309.sACmAKoo-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Juergen, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 33cc938e65a98f1d29d0a18403dbbee050dcad9a commit: 44b3c7af02ca2701b6b90ee30c9d1d9c3ae07653 xenbus: advertise control feature flags date: 7 years ago config: x86_64-randconfig-015-20231009 (https://download.01.org/0day-ci/archive/20231204/202312040309.sACmAKoo-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/20231204/202312040309.sACmAKoo-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202312040309.sACmAKoo-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from include/linux/kobject.h:21, from include/linux/device.h:17, from include/linux/node.h:17, from include/linux/cpu.h:16, from include/linux/stop_machine.h:4, from drivers/xen/manage.c:12: include/linux/sysfs.h: In function 'sysfs_get_dirent': include/linux/sysfs.h:517:44: warning: pointer targets in passing argument 2 of 'kernfs_find_and_get' differ in signedness [-Wpointer-sign] 517 | return kernfs_find_and_get(parent, name); | ^~~~ | | | const unsigned char * In file included from include/linux/sysfs.h:15: include/linux/kernfs.h:440:57: note: expected 'const char *' but argument is of type 'const unsigned char *' 440 | kernfs_find_and_get(struct kernfs_node *kn, const char *name) | ~~~~~~~~~~~~^~~~ drivers/xen/manage.c: In function 'shutdown_event': >> drivers/xen/manage.c:337:60: warning: '%s' directive output may be truncated writing up to 95 bytes into a region of size 12 [-Wformat-truncation=] 337 | snprintf(node, FEATURE_PATH_SIZE, "feature-%s", | ^~ In function 'setup_shutdown_watcher', inlined from 'shutdown_event' at drivers/xen/manage.c:349:2: drivers/xen/manage.c:337:17: note: 'snprintf' output between 9 and 104 bytes into a destination of size 20 337 | snprintf(node, FEATURE_PATH_SIZE, "feature-%s", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 338 | shutdown_handlers[idx].command); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +337 drivers/xen/manage.c 333 334 for (idx = 0; idx < ARRAY_SIZE(shutdown_handlers); idx++) { 335 if (!shutdown_handlers[idx].flag) 336 continue; > 337 snprintf(node, FEATURE_PATH_SIZE, "feature-%s", 338 shutdown_handlers[idx].command); 339 xenbus_printf(XBT_NIL, "control", node, "%u", 1); 340 } 341 342 return 0; 343 } 344 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki