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Message-ID: <202205282100.bU9SnP9m-lkp@intel.com>
Date: Sat, 28 May 2022 21:40:53 +0800
From: kernel test robot <lkp@...el.com>
To: "Jason A. Donenfeld" <zx2c4@...nel.org>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org, 0day robot <lkp@...el.com>
Subject: lib/crypto/blake2s-selftest.c:548:13: warning: stack frame size
(1128) exceeds limit (1024) in 'blake2s_selftest'
tree: https://github.com/intel-lab-lkp/linux/commits/UPDATE-20220528-180939/Jason-A-Donenfeld/crypto-blake2s-remove-shash-module/20220526-172214
head: 54e31fb223170c2e7f3a6c3b1f3b438e32788f43
commit: 54e31fb223170c2e7f3a6c3b1f3b438e32788f43 crypto: blake2s - remove shash module
date: 3 hours ago
config: hexagon-randconfig-r041-20220527 (https://download.01.org/0day-ci/archive/20220528/202205282100.bU9SnP9m-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0fbe3f3f486e01448121f7931a4ca29fac1504ab)
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/54e31fb223170c2e7f3a6c3b1f3b438e32788f43
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review UPDATE-20220528-180939/Jason-A-Donenfeld/crypto-blake2s-remove-shash-module/20220526-172214
git checkout 54e31fb223170c2e7f3a6c3b1f3b438e32788f43
# 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 lib/crypto/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> lib/crypto/blake2s-selftest.c:548:13: warning: stack frame size (1128) exceeds limit (1024) in 'blake2s_selftest' [-Wframe-larger-than]
bool __init blake2s_selftest(void)
^
1 warning generated.
vim +/blake2s_selftest +548 lib/crypto/blake2s-selftest.c
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 547
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 @548 bool __init blake2s_selftest(void)
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 549 {
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 550 u8 key[BLAKE2S_KEY_SIZE];
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 551 u8 buf[ARRAY_SIZE(blake2s_testvecs)];
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 552 u8 hash[BLAKE2S_HASH_SIZE];
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 553 struct blake2s_state state;
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 554 bool success = true;
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 555 int i, l;
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 556
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 557 key[0] = key[1] = 1;
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 558 for (i = 2; i < sizeof(key); ++i)
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 559 key[i] = key[i - 2] + key[i - 1];
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 560
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 561 for (i = 0; i < sizeof(buf); ++i)
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 562 buf[i] = (u8)i;
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 563
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 564 for (i = l = 0; i < ARRAY_SIZE(blake2s_testvecs); l = (l + 37) % ++i) {
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 565 int outlen = 1 + i % BLAKE2S_HASH_SIZE;
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 566 int keylen = (13 * i) % (BLAKE2S_KEY_SIZE + 1);
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 567
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 568 blake2s(hash, buf, key + BLAKE2S_KEY_SIZE - keylen, outlen, i,
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 569 keylen);
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 570 if (memcmp(hash, blake2s_testvecs[i], outlen)) {
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 571 pr_err("blake2s self-test %d: FAIL\n", i + 1);
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 572 success = false;
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 573 }
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 574
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 575 if (!keylen)
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 576 blake2s_init(&state, outlen);
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 577 else
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 578 blake2s_init_key(&state, outlen,
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 579 key + BLAKE2S_KEY_SIZE - keylen,
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 580 keylen);
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 581
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 582 blake2s_update(&state, buf, l);
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 583 blake2s_update(&state, buf + l, i - l);
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 584 blake2s_final(&state, hash);
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 585 if (memcmp(hash, blake2s_testvecs[i], outlen)) {
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 586 pr_err("blake2s init/update/final self-test %d: FAIL\n",
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 587 i + 1);
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 588 success = false;
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 589 }
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 590 }
66d7fb94e4ffe5 Jason A. Donenfeld 2019-11-08 591
54e31fb223170c Jason A. Donenfeld 2022-05-28 592 for (i = 0; i < 100; ++i) {
54e31fb223170c Jason A. Donenfeld 2022-05-28 593 u8 unaligned_block[BLAKE2S_BLOCK_SIZE + sizeof(long) - 1]
54e31fb223170c Jason A. Donenfeld 2022-05-28 594 __aligned(sizeof(long));
54e31fb223170c Jason A. Donenfeld 2022-05-28 595 u8 blocks[BLAKE2S_BLOCK_SIZE * 4];
54e31fb223170c Jason A. Donenfeld 2022-05-28 596 struct blake2s_state state1, state2;
54e31fb223170c Jason A. Donenfeld 2022-05-28 597
54e31fb223170c Jason A. Donenfeld 2022-05-28 598 get_random_bytes(blocks, sizeof(blocks));
54e31fb223170c Jason A. Donenfeld 2022-05-28 599 get_random_bytes(&state, sizeof(state));
54e31fb223170c Jason A. Donenfeld 2022-05-28 600
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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