* [linux-next:master 6018/6993] crypto/drbg.c:1200:4: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
@ 2021-12-15 15:05 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-12-15 15:05 UTC (permalink / raw)
To: kbuild
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CC: llvm(a)lists.linux.dev
CC: kbuild-all(a)lists.01.org
CC: Linux Memory Management List <linux-mm@kvack.org>
TO: Nicolai Stange <nstange@suse.de>
CC: Herbert Xu <herbert@gondor.apana.org.au>
CC: Stephan Mueller <smueller@chronox.de>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 0bafb8f3ebc84525d0ae0fcea22d12151b99312f
commit: 8f7977284331d0b0f210efa98a5d3fdcb2a65dd3 [6018/6993] crypto: drbg - ignore jitterentropy errors if not in FIPS mode
:::::: branch date: 17 hours ago
:::::: commit date: 4 days ago
config: x86_64-randconfig-c007-20211213 (https://download.01.org/0day-ci/archive/20211215/202112152209.Phx0xhEk-lkp(a)intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project b6a2ddb6c8ac29412b1361810972e15221fa021c)
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/next/linux-next.git/commit/?id=8f7977284331d0b0f210efa98a5d3fdcb2a65dd3
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout 8f7977284331d0b0f210efa98a5d3fdcb2a65dd3
# save the config file to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 clang-analyzer
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
clang-analyzer warnings: (new ones prefixed by >>)
fs/fuse/dev.c:1688:6: note: Assuming 'ra' is non-null
if (!ra)
^~~
fs/fuse/dev.c:1688:2: note: Taking false branch
if (!ra)
^
fs/fuse/dev.c:1704:9: note: Assuming 'num' is not equal to 0
while (num && ap->num_pages < num_pages) {
^~~
fs/fuse/dev.c:1704:9: note: Left side of '&&' is true
fs/fuse/dev.c:1704:30: note: The left operand of '<' is a garbage value
while (num && ap->num_pages < num_pages) {
~~~~~~~~~~~~~ ^
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
lib/scatterlist.c:109:10: warning: Access to field 'page_link' results in a dereference of a null pointer (loaded from variable 'ret') [clang-analyzer-core.NullDereference]
BUG_ON(!sg_is_last(ret));
^
include/linux/scatterlist.h:73:26: note: expanded from macro 'sg_is_last'
#define sg_is_last(sg) ((sg)->page_link & SG_END)
^~~
include/asm-generic/bug.h:65:45: note: expanded from macro 'BUG_ON'
#define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0)
^~~~~~~~~
include/linux/compiler.h:78:42: note: expanded from macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
lib/scatterlist.c:103:27: note: 'ret' initialized to a null pointer value
struct scatterlist *sg, *ret = NULL;
^~~
lib/scatterlist.c:106:30: note: Assuming 'i' is >= 'nents'
for_each_sg(sgl, sg, nents, i)
^
include/linux/scatterlist.h:152:31: note: expanded from macro 'for_each_sg'
for (__i = 0, sg = (sglist); __i < (nr); __i++, sg = sg_next(sg))
^~~~~~~~~~
lib/scatterlist.c:106:2: note: Loop condition is false. Execution continues on line 109
for_each_sg(sgl, sg, nents, i)
^
include/linux/scatterlist.h:152:2: note: expanded from macro 'for_each_sg'
for (__i = 0, sg = (sglist); __i < (nr); __i++, sg = sg_next(sg))
^
lib/scatterlist.c:109:10: note: Access to field 'page_link' results in a dereference of a null pointer (loaded from variable 'ret')
BUG_ON(!sg_is_last(ret));
^
include/linux/scatterlist.h:73:26: note: expanded from macro 'sg_is_last'
#define sg_is_last(sg) ((sg)->page_link & SG_END)
^~~
include/asm-generic/bug.h:65:45: note: expanded from macro 'BUG_ON'
#define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0)
^~~~~~~~~
include/linux/compiler.h:78:42: note: expanded from macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
Suppressed 10 warnings (10 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
Suppressed 10 warnings (10 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
Suppressed 6 warnings (6 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
7 warnings generated.
crypto/drbg.c:246:17: warning: Value stored to 'entropylen' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
unsigned short entropylen = drbg_sec_strength(drbg->core->flags);
^~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
crypto/drbg.c:246:17: note: Value stored to 'entropylen' during its initialization is never read
unsigned short entropylen = drbg_sec_strength(drbg->core->flags);
^~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> crypto/drbg.c:1200:4: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = crypto_rng_get_bytes(drbg->jent,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
crypto/drbg.c:1200:4: note: Value stored to 'ret' is never read
ret = crypto_rng_get_bytes(drbg->jent,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
4 warnings generated.
Suppressed 4 warnings (4 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
5 warnings generated.
Suppressed 5 warnings (5 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
9 warnings generated.
crypto/ecc.c:147:24: warning: The left operand of '&' is a garbage value [clang-analyzer-core.UndefinedBinaryOperatorResult]
return (vli[bit / 64] & ((u64)1 << (bit % 64)));
^
crypto/ecc.c:1618:6: note: Assuming 'private_key' is non-null
if (!private_key || !public_key || !curve ||
^~~~~~~~~~~~
crypto/ecc.c:1618:6: note: Left side of '||' is false
crypto/ecc.c:1618:22: note: Assuming 'public_key' is non-null
if (!private_key || !public_key || !curve ||
^~~~~~~~~~~
crypto/ecc.c:1618:6: note: Left side of '||' is false
if (!private_key || !public_key || !curve ||
^
crypto/ecc.c:1618:38: note: 'curve' is non-null
if (!private_key || !public_key || !curve ||
^~~~~
crypto/ecc.c:1618:6: note: Left side of '||' is false
if (!private_key || !public_key || !curve ||
^
crypto/ecc.c:1619:6: note: Assuming the condition is false
ndigits > ARRAY_SIZE(priv) || ndigits > ARRAY_SIZE(rand_z)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~
crypto/ecc.c:1618:6: note: Left side of '||' is false
if (!private_key || !public_key || !curve ||
^
crypto/ecc.c:1618:2: note: Taking false branch
if (!private_key || !public_key || !curve ||
^
crypto/ecc.c:1629:7: note: 'pk' is non-null
if (!pk) {
^~
crypto/ecc.c:1629:2: note: Taking false branch
if (!pk) {
^
crypto/ecc.c:1636:8: note: Calling 'ecc_is_pubkey_valid_partial'
ret = ecc_is_pubkey_valid_partial(curve, pk);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
crypto/ecc.c:1553:14: note: Assuming 'pk->ndigits' is equal to 'curve->g.ndigits'
if (WARN_ON(pk->ndigits != curve->g.ndigits))
^
include/asm-generic/bug.h:121:25: note: expanded from macro 'WARN_ON'
int __ret_warn_on = !!(condition); \
^~~~~~~~~
crypto/ecc.c:1553:6: note: Taking false branch
if (WARN_ON(pk->ndigits != curve->g.ndigits))
^
include/asm-generic/bug.h:122:2: note: expanded from macro 'WARN_ON'
if (unlikely(__ret_warn_on)) \
^
crypto/ecc.c:1553:2: note: Taking false branch
if (WARN_ON(pk->ndigits != curve->g.ndigits))
^
crypto/ecc.c:1557:2: note: Taking false branch
if (ecc_point_is_zero(pk))
^
crypto/ecc.c:1561:2: note: Taking false branch
if (vli_cmp(curve->p, pk->x, pk->ndigits) != 1)
^
crypto/ecc.c:1563:2: note: Taking false branch
if (vli_cmp(curve->p, pk->y, pk->ndigits) != 1)
^
crypto/ecc.c:1567:2: note: Calling 'vli_mod_square_fast'
vli_mod_square_fast(yy, pk->y, curve); /* y^2 */
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
crypto/ecc.c:982:2: note: Calling 'vli_mmod_fast'
vli_mmod_fast(result, product, curve);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
crypto/ecc.c:918:6: note: Assuming the condition is true
if (strncmp(curve->name, "nist_", 5) != 0) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
crypto/ecc.c:918:2: note: Taking true branch
if (strncmp(curve->name, "nist_", 5) != 0) {
^
crypto/ecc.c:920:7: note: Assuming the condition is false
if (curve_prime[ndigits - 1] == -1ull) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
crypto/ecc.c:920:3: note: Taking false branch
if (curve_prime[ndigits - 1] == -1ull) {
^
crypto/ecc.c:924:14: note: Assuming the condition is true
} else if (curve_prime[ndigits - 1] == 1ull << 63 &&
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
crypto/ecc.c:924:14: note: Left side of '&&' is true
crypto/ecc.c:925:7: note: Assuming the condition is true
curve_prime[ndigits - 2] == 0) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/ret +1200 crypto/drbg.c
8ea5ee00beb925 Nicolai Stange 2021-11-15 1136
541af946fe1360 Stephan Mueller 2014-05-31 1137 /*
541af946fe1360 Stephan Mueller 2014-05-31 1138 * Seeding or reseeding of the DRBG
541af946fe1360 Stephan Mueller 2014-05-31 1139 *
541af946fe1360 Stephan Mueller 2014-05-31 1140 * @drbg: DRBG state struct
541af946fe1360 Stephan Mueller 2014-05-31 1141 * @pers: personalization / additional information buffer
541af946fe1360 Stephan Mueller 2014-05-31 1142 * @reseed: 0 for initial seed process, 1 for reseeding
541af946fe1360 Stephan Mueller 2014-05-31 1143 *
541af946fe1360 Stephan Mueller 2014-05-31 1144 * return:
541af946fe1360 Stephan Mueller 2014-05-31 1145 * 0 on success
541af946fe1360 Stephan Mueller 2014-05-31 1146 * error value otherwise
541af946fe1360 Stephan Mueller 2014-05-31 1147 */
541af946fe1360 Stephan Mueller 2014-05-31 1148 static int drbg_seed(struct drbg_state *drbg, struct drbg_string *pers,
541af946fe1360 Stephan Mueller 2014-05-31 1149 bool reseed)
541af946fe1360 Stephan Mueller 2014-05-31 1150 {
57225e6797885e Stephan Mueller 2015-06-09 1151 int ret;
57225e6797885e Stephan Mueller 2015-06-09 1152 unsigned char entropy[((32 + 16) * 2)];
57225e6797885e Stephan Mueller 2015-06-09 1153 unsigned int entropylen = drbg_sec_strength(drbg->core->flags);
541af946fe1360 Stephan Mueller 2014-05-31 1154 struct drbg_string data1;
8c98716601bc05 Stephan Mueller 2014-06-28 1155 LIST_HEAD(seedlist);
2bcd25443868aa Nicolai Stange 2021-11-15 1156 enum drbg_seed_state new_seed_state = DRBG_SEED_STATE_FULL;
541af946fe1360 Stephan Mueller 2014-05-31 1157
541af946fe1360 Stephan Mueller 2014-05-31 1158 /* 9.1 / 9.2 / 9.3.1 step 3 */
541af946fe1360 Stephan Mueller 2014-05-31 1159 if (pers && pers->len > (drbg_max_addtl(drbg))) {
a9089571f2fc20 Stephan Mueller 2014-07-06 1160 pr_devel("DRBG: personalization string too long %zu\n",
541af946fe1360 Stephan Mueller 2014-05-31 1161 pers->len);
541af946fe1360 Stephan Mueller 2014-05-31 1162 return -EINVAL;
541af946fe1360 Stephan Mueller 2014-05-31 1163 }
541af946fe1360 Stephan Mueller 2014-05-31 1164
8fded5925d0a73 Herbert Xu 2015-04-21 1165 if (list_empty(&drbg->test_data.list)) {
8fded5925d0a73 Herbert Xu 2015-04-21 1166 drbg_string_fill(&data1, drbg->test_data.buf,
8fded5925d0a73 Herbert Xu 2015-04-21 1167 drbg->test_data.len);
541af946fe1360 Stephan Mueller 2014-05-31 1168 pr_devel("DRBG: using test entropy\n");
541af946fe1360 Stephan Mueller 2014-05-31 1169 } else {
57225e6797885e Stephan Mueller 2015-06-09 1170 /*
57225e6797885e Stephan Mueller 2015-06-09 1171 * Gather entropy equal to the security strength of the DRBG.
57225e6797885e Stephan Mueller 2015-06-09 1172 * With a derivation function, a nonce is required in addition
57225e6797885e Stephan Mueller 2015-06-09 1173 * to the entropy. A nonce must be at least 1/2 of the security
57225e6797885e Stephan Mueller 2015-06-09 1174 * strength of the DRBG in size. Thus, entropy + nonce is 3/2
57225e6797885e Stephan Mueller 2015-06-09 1175 * of the strength. The consideration of a nonce is only
57225e6797885e Stephan Mueller 2015-06-09 1176 * applicable during initial seeding.
57225e6797885e Stephan Mueller 2015-06-09 1177 */
57225e6797885e Stephan Mueller 2015-06-09 1178 BUG_ON(!entropylen);
57225e6797885e Stephan Mueller 2015-06-09 1179 if (!reseed)
57225e6797885e Stephan Mueller 2015-06-09 1180 entropylen = ((entropylen + 1) / 2) * 3;
57225e6797885e Stephan Mueller 2015-06-09 1181 BUG_ON((entropylen * 2) > sizeof(entropy));
57225e6797885e Stephan Mueller 2015-06-09 1182
b8ec5ba42c4a38 Stephan Mueller 2015-05-25 1183 /* Get seed from in-kernel /dev/urandom */
2bcd25443868aa Nicolai Stange 2021-11-15 1184 if (!rng_is_initialized())
2bcd25443868aa Nicolai Stange 2021-11-15 1185 new_seed_state = DRBG_SEED_STATE_PARTIAL;
2bcd25443868aa Nicolai Stange 2021-11-15 1186
db07cd26ac6a41 Stephan Mueller 2019-05-08 1187 ret = drbg_get_random_bytes(drbg, entropy, entropylen);
db07cd26ac6a41 Stephan Mueller 2019-05-08 1188 if (ret)
db07cd26ac6a41 Stephan Mueller 2019-05-08 1189 goto out;
b8ec5ba42c4a38 Stephan Mueller 2015-05-25 1190
57225e6797885e Stephan Mueller 2015-06-09 1191 if (!drbg->jent) {
57225e6797885e Stephan Mueller 2015-06-09 1192 drbg_string_fill(&data1, entropy, entropylen);
57225e6797885e Stephan Mueller 2015-06-09 1193 pr_devel("DRBG: (re)seeding with %u bytes of entropy\n",
57225e6797885e Stephan Mueller 2015-06-09 1194 entropylen);
b8ec5ba42c4a38 Stephan Mueller 2015-05-25 1195 } else {
8f7977284331d0 Nicolai Stange 2021-11-30 1196 /*
8f7977284331d0 Nicolai Stange 2021-11-30 1197 * Get seed from Jitter RNG, failures are
8f7977284331d0 Nicolai Stange 2021-11-30 1198 * fatal only in FIPS mode.
8f7977284331d0 Nicolai Stange 2021-11-30 1199 */
57225e6797885e Stephan Mueller 2015-06-09 @1200 ret = crypto_rng_get_bytes(drbg->jent,
57225e6797885e Stephan Mueller 2015-06-09 1201 entropy + entropylen,
57225e6797885e Stephan Mueller 2015-06-09 1202 entropylen);
8f7977284331d0 Nicolai Stange 2021-11-30 1203 if (fips_enabled && ret) {
57225e6797885e Stephan Mueller 2015-06-09 1204 pr_devel("DRBG: jent failed with %d\n", ret);
97f2650e504033 Stephan Müller 2020-04-17 1205
97f2650e504033 Stephan Müller 2020-04-17 1206 /*
97f2650e504033 Stephan Müller 2020-04-17 1207 * Do not treat the transient failure of the
97f2650e504033 Stephan Müller 2020-04-17 1208 * Jitter RNG as an error that needs to be
97f2650e504033 Stephan Müller 2020-04-17 1209 * reported. The combined number of the
97f2650e504033 Stephan Müller 2020-04-17 1210 * maximum reseed threshold times the maximum
97f2650e504033 Stephan Müller 2020-04-17 1211 * number of Jitter RNG transient errors is
97f2650e504033 Stephan Müller 2020-04-17 1212 * less than the reseed threshold required by
97f2650e504033 Stephan Müller 2020-04-17 1213 * SP800-90A allowing us to treat the
97f2650e504033 Stephan Müller 2020-04-17 1214 * transient errors as such.
97f2650e504033 Stephan Müller 2020-04-17 1215 *
97f2650e504033 Stephan Müller 2020-04-17 1216 * However, we mandate that at least the first
97f2650e504033 Stephan Müller 2020-04-17 1217 * seeding operation must succeed with the
97f2650e504033 Stephan Müller 2020-04-17 1218 * Jitter RNG.
97f2650e504033 Stephan Müller 2020-04-17 1219 */
97f2650e504033 Stephan Müller 2020-04-17 1220 if (!reseed || ret != -EAGAIN)
db07cd26ac6a41 Stephan Mueller 2019-05-08 1221 goto out;
57225e6797885e Stephan Mueller 2015-06-09 1222 }
57225e6797885e Stephan Mueller 2015-06-09 1223
57225e6797885e Stephan Mueller 2015-06-09 1224 drbg_string_fill(&data1, entropy, entropylen * 2);
57225e6797885e Stephan Mueller 2015-06-09 1225 pr_devel("DRBG: (re)seeding with %u bytes of entropy\n",
57225e6797885e Stephan Mueller 2015-06-09 1226 entropylen * 2);
b8ec5ba42c4a38 Stephan Mueller 2015-05-25 1227 }
541af946fe1360 Stephan Mueller 2014-05-31 1228 }
8c98716601bc05 Stephan Mueller 2014-06-28 1229 list_add_tail(&data1.list, &seedlist);
541af946fe1360 Stephan Mueller 2014-05-31 1230
541af946fe1360 Stephan Mueller 2014-05-31 1231 /*
541af946fe1360 Stephan Mueller 2014-05-31 1232 * concatenation of entropy with personalization str / addtl input)
541af946fe1360 Stephan Mueller 2014-05-31 1233 * the variable pers is directly handed in by the caller, so check its
541af946fe1360 Stephan Mueller 2014-05-31 1234 * contents whether it is appropriate
541af946fe1360 Stephan Mueller 2014-05-31 1235 */
8c98716601bc05 Stephan Mueller 2014-06-28 1236 if (pers && pers->buf && 0 < pers->len) {
8c98716601bc05 Stephan Mueller 2014-06-28 1237 list_add_tail(&pers->list, &seedlist);
541af946fe1360 Stephan Mueller 2014-05-31 1238 pr_devel("DRBG: using personalization string\n");
541af946fe1360 Stephan Mueller 2014-05-31 1239 }
541af946fe1360 Stephan Mueller 2014-05-31 1240
e6c0244ad38a35 Stephan Mueller 2014-08-17 1241 if (!reseed) {
e6c0244ad38a35 Stephan Mueller 2014-08-17 1242 memset(drbg->V, 0, drbg_statelen(drbg));
e6c0244ad38a35 Stephan Mueller 2014-08-17 1243 memset(drbg->C, 0, drbg_statelen(drbg));
e6c0244ad38a35 Stephan Mueller 2014-08-17 1244 }
e6c0244ad38a35 Stephan Mueller 2014-08-17 1245
2bcd25443868aa Nicolai Stange 2021-11-15 1246 ret = __drbg_seed(drbg, &seedlist, reseed, new_seed_state);
3d6a5f75d13405 Stephan Mueller 2015-05-25 1247
db07cd26ac6a41 Stephan Mueller 2019-05-08 1248 out:
57225e6797885e Stephan Mueller 2015-06-09 1249 memzero_explicit(entropy, entropylen * 2);
4c7879907eddd5 Stephan Mueller 2015-05-25 1250
541af946fe1360 Stephan Mueller 2014-05-31 1251 return ret;
541af946fe1360 Stephan Mueller 2014-05-31 1252 }
541af946fe1360 Stephan Mueller 2014-05-31 1253
:::::: The code at line 1200 was first introduced by commit
:::::: 57225e6797885e31302e76fc5926c0bedd7e5ad4 crypto: drbg - Use callback API for random readiness
:::::: TO: Stephan Mueller <smueller@chronox.de>
:::::: CC: Herbert Xu <herbert@gondor.apana.org.au>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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2021-12-15 15:05 [linux-next:master 6018/6993] crypto/drbg.c:1200:4: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores] kernel test robot
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