Hi Casey, I love your patch! Perhaps something to improve: [auto build test WARNING on pcmoore-audit/next] [also build test WARNING on pcmoore-selinux/next linus/master v5.19-rc4 next-20220627] [cannot apply to jmorris-security/next-testing] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/Casey-Schaufler/integrity-disassociate-ima_filter_rule-from-security_audit_rule/20220628-095614 base: https://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit.git next config: i386-defconfig (https://download.01.org/0day-ci/archive/20220628/202206281302.ApiPUdom-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/c930a07cebde69363d3633fba8bd4cac46dd1520 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Casey-Schaufler/integrity-disassociate-ima_filter_rule-from-security_audit_rule/20220628-095614 git checkout c930a07cebde69363d3633fba8bd4cac46dd1520 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): security/security.c: In function 'security_setprocattr': >> security/security.c:2285:21: warning: variable 'slotname' set but not used [-Wunused-but-set-variable] 2285 | const char *slotname; | ^~~~~~~~ vim +/slotname +2285 security/security.c 2266 2267 /** 2268 * security_setprocattr - Set process attributes via /proc 2269 * @lsm: name of module involved, or NULL 2270 * @name: name of the attribute 2271 * @value: value to set the attribute to 2272 * @size: size of the value 2273 * 2274 * Set the process attribute for the specified security module 2275 * to the specified value. Note that this can only be used to set 2276 * the process attributes for the current, or "self" process. 2277 * The /proc code has already done this check. 2278 * 2279 * Returns 0 on success, an appropriate code otherwise. 2280 */ 2281 int security_setprocattr(const char *lsm, const char *name, void *value, 2282 size_t size) 2283 { 2284 struct security_hook_list *hp; > 2285 const char *slotname; 2286 char *termed; 2287 char *copy; 2288 int *ilsm = current->security; 2289 int rc = -EINVAL; 2290 int slot = 0; 2291 2292 if (!strcmp(name, "interface_lsm")) { 2293 /* 2294 * Change the "interface_lsm" value only if all the security 2295 * modules that support setting a procattr allow it. 2296 * It is assumed that all such security modules will be 2297 * cooperative. 2298 */ 2299 if (size == 0) 2300 return -EINVAL; 2301 2302 hlist_for_each_entry(hp, &security_hook_heads.setprocattr, 2303 list) { 2304 rc = hp->hook.setprocattr(name, value, size); 2305 if (rc < 0 && rc != LSM_RET_DEFAULT(setprocattr)) 2306 return rc; 2307 } 2308 2309 rc = -EINVAL; 2310 2311 copy = kmemdup_nul(value, size, GFP_KERNEL); 2312 if (copy == NULL) 2313 return -ENOMEM; 2314 2315 termed = strsep(©, " \n"); 2316 2317 for (slot = 0; slot < lsm_slot; slot++) { 2318 slotname = lsm_slot_to_name(slot); 2319 if (!strcmp(termed, lsm_slotlist[slot]->lsm)) { 2320 *ilsm = slot; 2321 rc = size; 2322 break; 2323 } 2324 } 2325 2326 kfree(termed); 2327 return rc; 2328 } 2329 2330 hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) { 2331 if (lsm != NULL && strcmp(lsm, hp->lsmid->lsm)) 2332 continue; 2333 if (lsm == NULL && *ilsm != LSMBLOB_INVALID && 2334 *ilsm != hp->lsmid->slot) 2335 continue; 2336 return hp->hook.setprocattr(name, value, size); 2337 } 2338 return LSM_RET_DEFAULT(setprocattr); 2339 } 2340 -- 0-DAY CI Kernel Test Service https://01.org/lkp
