10:21 a.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/ast/bpf.git relo_core
head: f17ef55e5e0bac0d11d3186cd1c468b5a1e047d7
commit: 03c354f8c71c2478c421d5552d284e0befb03861 [9/19] bpf: Prepare relo_core.c for
kernel duty.
config: arc-randconfig-r043-20211115 (attached as .config)
compiler: arceb-elf-gcc (GCC) 11.2.0
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://git.kernel.org/pub/scm/linux/kernel/git/ast/bpf.git/commit/?id=03...
git remote add ast-bpf
https://git.kernel.org/pub/scm/linux/kernel/git/ast/bpf.git
git fetch --no-tags ast-bpf relo_core
git checkout 03c354f8c71c2478c421d5552d284e0befb03861
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
tools/lib/bpf/relo_core.c: In function 'bpf_core_apply_relo_insn':
> tools/lib/bpf/relo_core.c:1348:1: warning: the frame size of 1136
bytes is larger than 1024 bytes [-Wframe-larger-than=]
1348 | }
| ^
vim +1348 tools/lib/bpf/relo_core.c
b0588390dbcedc Alexei Starovoitov 2021-07-20 1147
b0588390dbcedc Alexei Starovoitov 2021-07-20 1148 /*
b0588390dbcedc Alexei Starovoitov 2021-07-20 1149 * CO-RE relocate single instruction.
b0588390dbcedc Alexei Starovoitov 2021-07-20 1150 *
b0588390dbcedc Alexei Starovoitov 2021-07-20 1151 * The outline and important points of
the algorithm:
b0588390dbcedc Alexei Starovoitov 2021-07-20 1152 * 1. For given local type, find
corresponding candidate target types.
b0588390dbcedc Alexei Starovoitov 2021-07-20 1153 * Candidate type is a type with
the same "essential" name, ignoring
b0588390dbcedc Alexei Starovoitov 2021-07-20 1154 * everything after last triple
underscore (___). E.g., `sample`,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1155 * `sample___flavor_one`,
`sample___flavor_another_one`, are all candidates
b0588390dbcedc Alexei Starovoitov 2021-07-20 1156 * for each other. Names with
triple underscore are referred to as
b0588390dbcedc Alexei Starovoitov 2021-07-20 1157 * "flavors" and are
useful, among other things, to allow to
b0588390dbcedc Alexei Starovoitov 2021-07-20 1158 * specify/support incompatible
variations of the same kernel struct, which
b0588390dbcedc Alexei Starovoitov 2021-07-20 1159 * might differ between different
kernel versions and/or build
b0588390dbcedc Alexei Starovoitov 2021-07-20 1160 * configurations.
b0588390dbcedc Alexei Starovoitov 2021-07-20 1161 *
b0588390dbcedc Alexei Starovoitov 2021-07-20 1162 * N.B. Struct "flavors"
could be generated by bpftool's BTF-to-C
b0588390dbcedc Alexei Starovoitov 2021-07-20 1163 * converter, when deduplicated BTF
of a kernel still contains more than
b0588390dbcedc Alexei Starovoitov 2021-07-20 1164 * one different types with the
same name. In that case, ___2, ___3, etc
b0588390dbcedc Alexei Starovoitov 2021-07-20 1165 * are appended starting from
second name conflict. But start flavors are
b0588390dbcedc Alexei Starovoitov 2021-07-20 1166 * also useful to be defined
"locally", in BPF program, to extract same
b0588390dbcedc Alexei Starovoitov 2021-07-20 1167 * data from incompatible changes
between different kernel
b0588390dbcedc Alexei Starovoitov 2021-07-20 1168 * versions/configurations. For
instance, to handle field renames between
b0588390dbcedc Alexei Starovoitov 2021-07-20 1169 * kernel versions, one can use two
flavors of the struct name with the
b0588390dbcedc Alexei Starovoitov 2021-07-20 1170 * same common name and use
conditional relocations to extract that field,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1171 * depending on target kernel
version.
b0588390dbcedc Alexei Starovoitov 2021-07-20 1172 * 2. For each candidate type, try to
match local specification to this
b0588390dbcedc Alexei Starovoitov 2021-07-20 1173 * candidate target type. Matching
involves finding corresponding
b0588390dbcedc Alexei Starovoitov 2021-07-20 1174 * high-level spec accessors,
meaning that all named fields should match,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1175 * as well as all array accesses
should be within the actual bounds. Also,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1176 * types should be compatible (see
bpf_core_fields_are_compat for details).
b0588390dbcedc Alexei Starovoitov 2021-07-20 1177 * 3. It is supported and expected
that there might be multiple flavors
b0588390dbcedc Alexei Starovoitov 2021-07-20 1178 * matching the spec. As long as
all the specs resolve to the same set of
b0588390dbcedc Alexei Starovoitov 2021-07-20 1179 * offsets across all candidates,
there is no error. If there is any
b0588390dbcedc Alexei Starovoitov 2021-07-20 1180 * ambiguity, CO-RE relocation will
fail. This is necessary to accomodate
b0588390dbcedc Alexei Starovoitov 2021-07-20 1181 * imprefection of BTF
deduplication, which can cause slight duplication of
b0588390dbcedc Alexei Starovoitov 2021-07-20 1182 * the same BTF type, if some
directly or indirectly referenced (by
b0588390dbcedc Alexei Starovoitov 2021-07-20 1183 * pointer) type gets resolved to
different actual types in different
b0588390dbcedc Alexei Starovoitov 2021-07-20 1184 * object files. If such situation
occurs, deduplicated BTF will end up
b0588390dbcedc Alexei Starovoitov 2021-07-20 1185 * with two (or more) structurally
identical types, which differ only in
b0588390dbcedc Alexei Starovoitov 2021-07-20 1186 * types they refer to through
pointer. This should be OK in most cases and
b0588390dbcedc Alexei Starovoitov 2021-07-20 1187 * is not an error.
b0588390dbcedc Alexei Starovoitov 2021-07-20 1188 * 4. Candidate types search is
performed by linearly scanning through all
b0588390dbcedc Alexei Starovoitov 2021-07-20 1189 * types in target BTF. It is
anticipated that this is overall more
b0588390dbcedc Alexei Starovoitov 2021-07-20 1190 * efficient memory-wise and not
significantly worse (if not better)
b0588390dbcedc Alexei Starovoitov 2021-07-20 1191 * CPU-wise compared to prebuilding
a map from all local type names to
b0588390dbcedc Alexei Starovoitov 2021-07-20 1192 * a list of candidate type names.
It's also sped up by caching resolved
b0588390dbcedc Alexei Starovoitov 2021-07-20 1193 * list of matching candidates per
each local "root" type ID, that has at
b0588390dbcedc Alexei Starovoitov 2021-07-20 1194 * least one bpf_core_relo
associated with it. This list is shared
b0588390dbcedc Alexei Starovoitov 2021-07-20 1195 * between multiple relocations for
the same type ID and is updated as some
b0588390dbcedc Alexei Starovoitov 2021-07-20 1196 * of the candidates are pruned due
to structural incompatibility.
b0588390dbcedc Alexei Starovoitov 2021-07-20 1197 */
b0588390dbcedc Alexei Starovoitov 2021-07-20 1198 int bpf_core_apply_relo_insn(const
char *prog_name, struct bpf_insn *insn,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1199 int insn_idx,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1200 const struct bpf_core_relo
*relo,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1201 int relo_idx,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1202 const struct btf *local_btf,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1203 struct bpf_core_cand_list
*cands)
b0588390dbcedc Alexei Starovoitov 2021-07-20 1204 {
b0588390dbcedc Alexei Starovoitov 2021-07-20 1205 struct bpf_core_spec local_spec,
cand_spec, targ_spec = {};
b0588390dbcedc Alexei Starovoitov 2021-07-20 1206 struct bpf_core_relo_res cand_res,
targ_res;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1207 const struct btf_type *local_type;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1208 const char *local_name;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1209 __u32 local_id;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1210 const char *spec_str;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1211 int i, j, err;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1212
b0588390dbcedc Alexei Starovoitov 2021-07-20 1213 local_id = relo->type_id;
9954f5c668fde7 Alexei Starovoitov 2021-09-30 1214 local_type =
btf_type_by_id(local_btf, local_id);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1215 if (!local_type)
b0588390dbcedc Alexei Starovoitov 2021-07-20 1216 return -EINVAL;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1217
b0588390dbcedc Alexei Starovoitov 2021-07-20 1218 local_name =
btf__name_by_offset(local_btf, local_type->name_off);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1219 if (!local_name)
b0588390dbcedc Alexei Starovoitov 2021-07-20 1220 return -EINVAL;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1221
b0588390dbcedc Alexei Starovoitov 2021-07-20 1222 spec_str =
btf__name_by_offset(local_btf, relo->access_str_off);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1223 if (str_is_empty(spec_str))
b0588390dbcedc Alexei Starovoitov 2021-07-20 1224 return -EINVAL;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1225
b0588390dbcedc Alexei Starovoitov 2021-07-20 1226 err = bpf_core_parse_spec(local_btf,
local_id, spec_str, relo->kind, &local_spec);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1227 if (err) {
b0588390dbcedc Alexei Starovoitov 2021-07-20 1228 pr_warn("prog '%s':
relo #%d: parsing [%d] %s %s + %s failed: %d\n",
b0588390dbcedc Alexei Starovoitov 2021-07-20 1229 prog_name, relo_idx, local_id,
btf_kind_str(local_type),
b0588390dbcedc Alexei Starovoitov 2021-07-20 1230 str_is_empty(local_name) ?
"<anon>" : local_name,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1231 spec_str, err);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1232 return -EINVAL;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1233 }
b0588390dbcedc Alexei Starovoitov 2021-07-20 1234
b0588390dbcedc Alexei Starovoitov 2021-07-20 1235 pr_debug("prog '%s':
relo #%d: kind <%s> (%d), spec is ", prog_name,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1236 relo_idx,
core_relo_kind_str(relo->kind), relo->kind);
03c354f8c71c24 Alexei Starovoitov 2021-09-07 1237 bpf_core_dump_spec(prog_name,
LIBBPF_DEBUG, &local_spec);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1238 libbpf_print(LIBBPF_DEBUG,
"\n");
b0588390dbcedc Alexei Starovoitov 2021-07-20 1239
b0588390dbcedc Alexei Starovoitov 2021-07-20 1240 /* TYPE_ID_LOCAL relo is special and
doesn't need candidate search */
b0588390dbcedc Alexei Starovoitov 2021-07-20 1241 if (relo->kind ==
BPF_TYPE_ID_LOCAL) {
b0588390dbcedc Alexei Starovoitov 2021-07-20 1242 targ_res.validate = true;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1243 targ_res.poison = false;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1244 targ_res.orig_val =
local_spec.root_type_id;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1245 targ_res.new_val =
local_spec.root_type_id;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1246 goto patch_insn;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1247 }
b0588390dbcedc Alexei Starovoitov 2021-07-20 1248
b0588390dbcedc Alexei Starovoitov 2021-07-20 1249 /* libbpf doesn't support
candidate search for anonymous types */
b0588390dbcedc Alexei Starovoitov 2021-07-20 1250 if (str_is_empty(spec_str)) {
b0588390dbcedc Alexei Starovoitov 2021-07-20 1251 pr_warn("prog '%s':
relo #%d: <%s> (%d) relocation doesn't support anonymous types\n",
b0588390dbcedc Alexei Starovoitov 2021-07-20 1252 prog_name, relo_idx,
core_relo_kind_str(relo->kind), relo->kind);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1253 return -EOPNOTSUPP;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1254 }
b0588390dbcedc Alexei Starovoitov 2021-07-20 1255
b0588390dbcedc Alexei Starovoitov 2021-07-20 1256
b0588390dbcedc Alexei Starovoitov 2021-07-20 1257 for (i = 0, j = 0; i <
cands->len; i++) {
b0588390dbcedc Alexei Starovoitov 2021-07-20 1258 err =
bpf_core_spec_match(&local_spec, cands->cands[i].btf,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1259 cands->cands[i].id,
&cand_spec);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1260 if (err < 0) {
b0588390dbcedc Alexei Starovoitov 2021-07-20 1261 pr_warn("prog '%s':
relo #%d: error matching candidate #%d ",
b0588390dbcedc Alexei Starovoitov 2021-07-20 1262 prog_name, relo_idx, i);
03c354f8c71c24 Alexei Starovoitov 2021-09-07 1263 bpf_core_dump_spec(prog_name,
LIBBPF_WARN, &cand_spec);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1264 libbpf_print(LIBBPF_WARN, ":
%d\n", err);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1265 return err;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1266 }
b0588390dbcedc Alexei Starovoitov 2021-07-20 1267
b0588390dbcedc Alexei Starovoitov 2021-07-20 1268 pr_debug("prog '%s':
relo #%d: %s candidate #%d ", prog_name,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1269 relo_idx, err == 0 ?
"non-matching" : "matching", i);
03c354f8c71c24 Alexei Starovoitov 2021-09-07 1270 bpf_core_dump_spec(prog_name,
LIBBPF_DEBUG, &cand_spec);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1271 libbpf_print(LIBBPF_DEBUG,
"\n");
b0588390dbcedc Alexei Starovoitov 2021-07-20 1272
b0588390dbcedc Alexei Starovoitov 2021-07-20 1273 if (err == 0)
b0588390dbcedc Alexei Starovoitov 2021-07-20 1274 continue;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1275
b0588390dbcedc Alexei Starovoitov 2021-07-20 1276 err = bpf_core_calc_relo(prog_name,
relo, relo_idx, &local_spec, &cand_spec, &cand_res);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1277 if (err)
b0588390dbcedc Alexei Starovoitov 2021-07-20 1278 return err;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1279
b0588390dbcedc Alexei Starovoitov 2021-07-20 1280 if (j == 0) {
b0588390dbcedc Alexei Starovoitov 2021-07-20 1281 targ_res = cand_res;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1282 targ_spec = cand_spec;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1283 } else if (cand_spec.bit_offset !=
targ_spec.bit_offset) {
b0588390dbcedc Alexei Starovoitov 2021-07-20 1284 /* if there are many field relo
candidates, they
b0588390dbcedc Alexei Starovoitov 2021-07-20 1285 * should all resolve to the same
bit offset
b0588390dbcedc Alexei Starovoitov 2021-07-20 1286 */
b0588390dbcedc Alexei Starovoitov 2021-07-20 1287 pr_warn("prog '%s':
relo #%d: field offset ambiguity: %u != %u\n",
b0588390dbcedc Alexei Starovoitov 2021-07-20 1288 prog_name, relo_idx,
cand_spec.bit_offset,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1289 targ_spec.bit_offset);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1290 return -EINVAL;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1291 } else if (cand_res.poison !=
targ_res.poison || cand_res.new_val != targ_res.new_val) {
b0588390dbcedc Alexei Starovoitov 2021-07-20 1292 /* all candidates should result in
the same relocation
b0588390dbcedc Alexei Starovoitov 2021-07-20 1293 * decision and value, otherwise
it's dangerous to
b0588390dbcedc Alexei Starovoitov 2021-07-20 1294 * proceed due to ambiguity
b0588390dbcedc Alexei Starovoitov 2021-07-20 1295 */
b0588390dbcedc Alexei Starovoitov 2021-07-20 1296 pr_warn("prog '%s':
relo #%d: relocation decision ambiguity: %s %u != %s %u\n",
b0588390dbcedc Alexei Starovoitov 2021-07-20 1297 prog_name, relo_idx,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1298 cand_res.poison ?
"failure" : "success", cand_res.new_val,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1299 targ_res.poison ?
"failure" : "success", targ_res.new_val);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1300 return -EINVAL;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1301 }
b0588390dbcedc Alexei Starovoitov 2021-07-20 1302
b0588390dbcedc Alexei Starovoitov 2021-07-20 1303 cands->cands[j++] =
cands->cands[i];
b0588390dbcedc Alexei Starovoitov 2021-07-20 1304 }
b0588390dbcedc Alexei Starovoitov 2021-07-20 1305
b0588390dbcedc Alexei Starovoitov 2021-07-20 1306 /*
b0588390dbcedc Alexei Starovoitov 2021-07-20 1307 * For BPF_FIELD_EXISTS relo or when
used BPF program has field
b0588390dbcedc Alexei Starovoitov 2021-07-20 1308 * existence checks or kernel
version/config checks, it's expected
b0588390dbcedc Alexei Starovoitov 2021-07-20 1309 * that we might not find any
candidates. In this case, if field
b0588390dbcedc Alexei Starovoitov 2021-07-20 1310 * wasn't found in any candidate,
the list of candidates shouldn't
b0588390dbcedc Alexei Starovoitov 2021-07-20 1311 * change at all, we'll just
handle relocating appropriately,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1312 * depending on relo's kind.
b0588390dbcedc Alexei Starovoitov 2021-07-20 1313 */
b0588390dbcedc Alexei Starovoitov 2021-07-20 1314 if (j > 0)
b0588390dbcedc Alexei Starovoitov 2021-07-20 1315 cands->len = j;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1316
b0588390dbcedc Alexei Starovoitov 2021-07-20 1317 /*
b0588390dbcedc Alexei Starovoitov 2021-07-20 1318 * If no candidates were found, it
might be both a programmer error,
b0588390dbcedc Alexei Starovoitov 2021-07-20 1319 * as well as expected case,
depending whether instruction w/
b0588390dbcedc Alexei Starovoitov 2021-07-20 1320 * relocation is guarded in some way
that makes it unreachable (dead
b0588390dbcedc Alexei Starovoitov 2021-07-20 1321 * code) if relocation can't be
resolved. This is handled in
b0588390dbcedc Alexei Starovoitov 2021-07-20 1322 * bpf_core_patch_insn() uniformly by
replacing that instruction with
b0588390dbcedc Alexei Starovoitov 2021-07-20 1323 * BPF helper call insn (using
invalid helper ID). If that instruction
b0588390dbcedc Alexei Starovoitov 2021-07-20 1324 * is indeed unreachable, then it
will be ignored and eliminated by
b0588390dbcedc Alexei Starovoitov 2021-07-20 1325 * verifier. If it was an error, then
verifier will complain and point
b0588390dbcedc Alexei Starovoitov 2021-07-20 1326 * to a specific instruction number
in its log.
b0588390dbcedc Alexei Starovoitov 2021-07-20 1327 */
b0588390dbcedc Alexei Starovoitov 2021-07-20 1328 if (j == 0) {
b0588390dbcedc Alexei Starovoitov 2021-07-20 1329 pr_debug("prog '%s':
relo #%d: no matching targets found\n",
b0588390dbcedc Alexei Starovoitov 2021-07-20 1330 prog_name, relo_idx);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1331
b0588390dbcedc Alexei Starovoitov 2021-07-20 1332 /* calculate single target relo
result explicitly */
b0588390dbcedc Alexei Starovoitov 2021-07-20 1333 err = bpf_core_calc_relo(prog_name,
relo, relo_idx, &local_spec, NULL, &targ_res);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1334 if (err)
b0588390dbcedc Alexei Starovoitov 2021-07-20 1335 return err;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1336 }
b0588390dbcedc Alexei Starovoitov 2021-07-20 1337
b0588390dbcedc Alexei Starovoitov 2021-07-20 1338 patch_insn:
b0588390dbcedc Alexei Starovoitov 2021-07-20 1339 /* bpf_core_patch_insn() should know
how to handle missing targ_spec */
b0588390dbcedc Alexei Starovoitov 2021-07-20 1340 err = bpf_core_patch_insn(prog_name,
insn, insn_idx, relo, relo_idx, &targ_res);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1341 if (err) {
b0588390dbcedc Alexei Starovoitov 2021-07-20 1342 pr_warn("prog '%s':
relo #%d: failed to patch insn #%u: %d\n",
b0588390dbcedc Alexei Starovoitov 2021-07-20 1343 prog_name, relo_idx,
relo->insn_off / 8, err);
b0588390dbcedc Alexei Starovoitov 2021-07-20 1344 return -EINVAL;
b0588390dbcedc Alexei Starovoitov 2021-07-20 1345 }
b0588390dbcedc Alexei Starovoitov 2021-07-20 1346
b0588390dbcedc Alexei Starovoitov 2021-07-20 1347 return 0;
b0588390dbcedc Alexei Starovoitov 2021-07-20 @1348 }
:::::: The code at line 1348 was first introduced by commit
:::::: b0588390dbcedcd74fab6ffb8afe8d52380fd8b6 libbpf: Split CO-RE logic into
relo_core.c.
:::::: TO: Alexei Starovoitov <ast(a)kernel.org>
:::::: CC: Andrii Nakryiko <andrii(a)kernel.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org