lib/crypto/chacha.c:64:1: warning: the frame size of 1600 bytes is larger than 1024 bytes

kernel test robot
2023-07-06T22:52:46Z

Hi Seung-Woo,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: a452483508d7b70b0f6c69e249ec0b3ea2330b5c
commit: d539fee9f825b0c8eac049732c83562b28a483b5 ARM: 9253/1: ubsan: select ARCH_HAS_UBSAN_SANITIZE_ALL
date: 8 months ago
config: arm-randconfig-r015-20230707 (https://download.01.org/0day-ci/archive/20230707/202307070612.8DMHJyR2-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230707/202307070612.8DMHJyR2-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307070612.8DMHJyR2-lkp@intel.com/

All warnings (new ones prefixed by >>):

lib/crypto/chacha.c: In function 'chacha_permute':
>> lib/crypto/chacha.c:64:1: warning: the frame size of 1600 bytes is larger than 1024 bytes [-Wframe-larger-than=]
64 | }
| ^
--
drivers/crypto/ccree/cc_hash.c: In function 'cc_hash_setkey':
>> drivers/crypto/ccree/cc_hash.c:919:1: warning: the frame size of 1056 bytes is larger than 1024 bytes [-Wframe-larger-than=]
919 | }
| ^

vim +64 lib/crypto/chacha.c

e192be9d9a3055 lib/chacha20.c Theodore Ts'o 2016-06-12 15
1ca1b917940c24 lib/chacha.c Eric Biggers 2018-11-16 16 static void chacha_permute(u32 *x, int nrounds)
e192be9d9a3055 lib/chacha20.c Theodore Ts'o 2016-06-12 17 {
e192be9d9a3055 lib/chacha20.c Theodore Ts'o 2016-06-12 18 int i;
e192be9d9a3055 lib/chacha20.c Theodore Ts'o 2016-06-12 19
1ca1b917940c24 lib/chacha.c Eric Biggers 2018-11-16 20 /* whitelist the allowed round counts */
aa7624093cb7fb lib/chacha.c Eric Biggers 2018-11-16 21 WARN_ON_ONCE(nrounds != 20 && nrounds != 12);
1ca1b917940c24 lib/chacha.c Eric Biggers 2018-11-16 22
1ca1b917940c24 lib/chacha.c Eric Biggers 2018-11-16 23 for (i = 0; i < nrounds; i += 2) {
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 24 x[0] += x[4]; x[12] = rol32(x[12] ^ x[0], 16);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 25 x[1] += x[5]; x[13] = rol32(x[13] ^ x[1], 16);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 26 x[2] += x[6]; x[14] = rol32(x[14] ^ x[2], 16);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 27 x[3] += x[7]; x[15] = rol32(x[15] ^ x[3], 16);
e192be9d9a3055 lib/chacha20.c Theodore Ts'o 2016-06-12 28
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 29 x[8] += x[12]; x[4] = rol32(x[4] ^ x[8], 12);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 30 x[9] += x[13]; x[5] = rol32(x[5] ^ x[9], 12);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 31 x[10] += x[14]; x[6] = rol32(x[6] ^ x[10], 12);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 32 x[11] += x[15]; x[7] = rol32(x[7] ^ x[11], 12);
e192be9d9a3055 lib/chacha20.c Theodore Ts'o 2016-06-12 33
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 34 x[0] += x[4]; x[12] = rol32(x[12] ^ x[0], 8);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 35 x[1] += x[5]; x[13] = rol32(x[13] ^ x[1], 8);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 36 x[2] += x[6]; x[14] = rol32(x[14] ^ x[2], 8);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 37 x[3] += x[7]; x[15] = rol32(x[15] ^ x[3], 8);
e192be9d9a3055 lib/chacha20.c Theodore Ts'o 2016-06-12 38
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 39 x[8] += x[12]; x[4] = rol32(x[4] ^ x[8], 7);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 40 x[9] += x[13]; x[5] = rol32(x[5] ^ x[9], 7);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 41 x[10] += x[14]; x[6] = rol32(x[6] ^ x[10], 7);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 42 x[11] += x[15]; x[7] = rol32(x[7] ^ x[11], 7);
e192be9d9a3055 lib/chacha20.c Theodore Ts'o 2016-06-12 43
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 44 x[0] += x[5]; x[15] = rol32(x[15] ^ x[0], 16);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 45 x[1] += x[6]; x[12] = rol32(x[12] ^ x[1], 16);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 46 x[2] += x[7]; x[13] = rol32(x[13] ^ x[2], 16);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 47 x[3] += x[4]; x[14] = rol32(x[14] ^ x[3], 16);
e192be9d9a3055 lib/chacha20.c Theodore Ts'o 2016-06-12 48
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 49 x[10] += x[15]; x[5] = rol32(x[5] ^ x[10], 12);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 50 x[11] += x[12]; x[6] = rol32(x[6] ^ x[11], 12);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 51 x[8] += x[13]; x[7] = rol32(x[7] ^ x[8], 12);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 52 x[9] += x[14]; x[4] = rol32(x[4] ^ x[9], 12);
e192be9d9a3055 lib/chacha20.c Theodore Ts'o 2016-06-12 53
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 54 x[0] += x[5]; x[15] = rol32(x[15] ^ x[0], 8);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 55 x[1] += x[6]; x[12] = rol32(x[12] ^ x[1], 8);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 56 x[2] += x[7]; x[13] = rol32(x[13] ^ x[2], 8);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 57 x[3] += x[4]; x[14] = rol32(x[14] ^ x[3], 8);
e192be9d9a3055 lib/chacha20.c Theodore Ts'o 2016-06-12 58
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 59 x[10] += x[15]; x[5] = rol32(x[5] ^ x[10], 7);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 60 x[11] += x[12]; x[6] = rol32(x[6] ^ x[11], 7);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 61 x[8] += x[13]; x[7] = rol32(x[7] ^ x[8], 7);
7660b1fb367eb3 lib/chacha20.c Eric Biggers 2017-12-31 62 x[9] += x[14]; x[4] = rol32(x[4] ^ x[9], 7);
e192be9d9a3055 lib/chacha20.c Theodore Ts'o 2016-06-12 63 }
dd333449d0fb66 lib/chacha20.c Eric Biggers 2018-11-16 @64 }
dd333449d0fb66 lib/chacha20.c Eric Biggers 2018-11-16 65

:::::: The code at line 64 was first introduced by commit
:::::: dd333449d0fb667c5250c42488a7e90470e16c77 crypto: chacha20-generic - add HChaCha20 library function

:::::: TO: Eric Biggers <ebiggers@google.com>
:::::: CC: Herbert Xu <herbert@gondor.apana.org.au>

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