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SubjectRe: [PATCH 2/2] KEYS: Add keyagent request_key
Hi Benjamin,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on jmorris-security/next-testing]
[also build test WARNING on dhowells-fs/fscache-next]
[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#_base_tree_information]

url: https://github.com/intel-lab-lkp/linux/commits/Benjamin-Coddington/Keyagents-another-call_usermodehelper-approach-for-namespaces/20220712-203658
base: https://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git next-testing
config: hexagon-randconfig-r005-20220714 (https://download.01.org/0day-ci/archive/20220715/202207150537.QnoEUasf-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5e61b9c556267086ef9b743a0b57df302eef831b)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/4d4f4ae463335d3e611bdb71330ab37af115cde9
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Benjamin-Coddington/Keyagents-another-call_usermodehelper-approach-for-namespaces/20220712-203658
git checkout 4d4f4ae463335d3e611bdb71330ab37af115cde9
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash security/keys/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> security/keys/request_key.c:254:1: warning: unused label 'done' [-Wunused-label]
done:
^~~~~
1 warning generated.


vim +/done +254 security/keys/request_key.c

217
218 /*
219 * Call out to userspace for key construction.
220 *
221 * Program failure is ignored in favour of key status.
222 */
223 static int construct_key(struct key *key, const void *callout_info,
224 size_t callout_len, void *aux,
225 struct key *dest_keyring)
226 {
227 request_key_actor_t actor;
228 struct key *authkey;
229 int ret;
230
231 kenter("%d,%p,%zu,%p", key->serial, callout_info, callout_len, aux);
232
233 /* allocate an authorisation key */
234 authkey = request_key_auth_new(key, "create", callout_info, callout_len,
235 dest_keyring);
236 if (IS_ERR(authkey))
237 return PTR_ERR(authkey);
238
239 /* Make the call */
240 actor = call_sbin_request_key;
241 if (key->type->request_key)
242 actor = key->type->request_key;
243 #ifdef CONFIG_KEYAGENT
244 else {
245 ret = keyagent_request_key(authkey, aux);
246
247 /* ENOKEY: no keyagents match on calling process' keyrings */
248 if (ret != -ENOKEY)
249 goto done;
250 }
251 #endif
252 ret = actor(authkey, aux);
253
> 254 done:
255 /* check that the actor called complete_request_key() prior to
256 * returning an error */
257 WARN_ON(ret < 0 &&
258 !test_bit(KEY_FLAG_INVALIDATED, &authkey->flags));
259
260 key_put(authkey);
261 kleave(" = %d", ret);
262 return ret;
263 }
264

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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