From: kernel test robot <lkp@intel.com>
To: "Jason A. Donenfeld" <zx2c4@kernel.org>
Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org,
Linux Memory Management List <linux-mm@kvack.org>,
Herbert Xu <herbert@gondor.apana.org.au>
Subject: [linux-next:master 1663/12552] lib/crypto/blake2s-selftest.c:548:13: warning: stack frame size (1120) exceeds limit (1024) in 'blake2s_selftest'
Date: Mon, 25 Jul 2022 13:04:55 +0800 [thread overview]
Message-ID: <202207251313.gKhpElEq-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 18c107a1f120d095404d141dfad8f594bdc44020
commit: 2d16803c562ecc644803d42ba98a8e0aef9c014e [1663/12552] crypto: blake2s - remove shash module
config: mips-randconfig-c004-20220724 (https://download.01.org/0day-ci/archive/20220725/202207251313.gKhpElEq-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 12fbd2d377e396ad61bce56d71c98a1eb1bebfa9)
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
# install mips cross compiling tool for clang build
# apt-get install binutils-mipsel-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=2d16803c562ecc644803d42ba98a8e0aef9c014e
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 2d16803c562ecc644803d42ba98a8e0aef9c014e
# 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=mips SHELL=/bin/bash lib/crypto/
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 >>):
>> lib/crypto/blake2s-selftest.c:548:13: warning: stack frame size (1120) 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
2d16803c562ecc Jason A. Donenfeld 2022-05-28 592 for (i = 0; i < 32; ++i) {
2d16803c562ecc Jason A. Donenfeld 2022-05-28 593 enum { TEST_ALIGNMENT = 16 };
2d16803c562ecc Jason A. Donenfeld 2022-05-28 594 u8 unaligned_block[BLAKE2S_BLOCK_SIZE + TEST_ALIGNMENT - 1]
2d16803c562ecc Jason A. Donenfeld 2022-05-28 595 __aligned(TEST_ALIGNMENT);
2d16803c562ecc Jason A. Donenfeld 2022-05-28 596 u8 blocks[BLAKE2S_BLOCK_SIZE * 3];
2d16803c562ecc Jason A. Donenfeld 2022-05-28 597 struct blake2s_state state1, state2;
2d16803c562ecc Jason A. Donenfeld 2022-05-28 598
2d16803c562ecc Jason A. Donenfeld 2022-05-28 599 get_random_bytes(blocks, sizeof(blocks));
2d16803c562ecc Jason A. Donenfeld 2022-05-28 600 get_random_bytes(&state, sizeof(state));
2d16803c562ecc Jason A. Donenfeld 2022-05-28 601
:::::: The code at line 548 was first introduced by commit
:::::: 66d7fb94e4ffe5acc589e0b2b4710aecc1f07a28 crypto: blake2s - generic C library implementation and selftest
:::::: TO: Jason A. Donenfeld <Jason@zx2c4.com>
:::::: CC: Herbert Xu <herbert@gondor.apana.org.au>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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