* arch/powerpc/crypto/aes-gcm-p10-glue.c:121:9: error: 'gcm_init_htable' accessing 256 bytes in a region of size 224
@ 2023-10-28 16:54 kernel test robot
2023-11-17 10:22 ` Herbert Xu
0 siblings, 1 reply; 2+ messages in thread
From: kernel test robot @ 2023-10-28 16:54 UTC (permalink / raw)
To: Danny Tsen; +Cc: oe-kbuild-all, linux-kernel, Herbert Xu
Hi Danny,
FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 56567a20b22bdbf85c3e55eee3bf2bd23fa2f108
commit: 9c716e1bd369afa2d1c5038297e8ceda3f82db7d crypto: p10-aes-gcm - Remove POWER10_CPU dependency
date: 6 months ago
config: powerpc64-randconfig-r005-20230913 (https://download.01.org/0day-ci/archive/20231029/202310290004.TQsw1iN1-lkp@intel.com/config)
compiler: powerpc64le-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231029/202310290004.TQsw1iN1-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/202310290004.TQsw1iN1-lkp@intel.com/
All errors (new ones prefixed by >>):
arch/powerpc/crypto/aes-gcm-p10-glue.c: In function 'gcmp10_init':
>> arch/powerpc/crypto/aes-gcm-p10-glue.c:121:9: error: 'gcm_init_htable' accessing 256 bytes in a region of size 224 [-Werror=stringop-overflow=]
121 | gcm_init_htable(hash->Htable+32, hash->H);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/crypto/aes-gcm-p10-glue.c:121:9: note: referencing argument 1 of type 'unsigned char[256]'
arch/powerpc/crypto/aes-gcm-p10-glue.c:121:9: note: referencing argument 2 of type 'unsigned char[16]'
arch/powerpc/crypto/aes-gcm-p10-glue.c:41:17: note: in a call to function 'gcm_init_htable'
41 | asmlinkage void gcm_init_htable(unsigned char htable[256], unsigned char Xi[16]);
| ^~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
vim +/gcm_init_htable +121 arch/powerpc/crypto/aes-gcm-p10-glue.c
cdcecfd9991fe9a Danny Tsen 2023-02-20 113
cdcecfd9991fe9a Danny Tsen 2023-02-20 114 static void gcmp10_init(struct gcm_ctx *gctx, u8 *iv, unsigned char *rdkey,
cdcecfd9991fe9a Danny Tsen 2023-02-20 115 struct Hash_ctx *hash, u8 *assoc, unsigned int assoclen)
cdcecfd9991fe9a Danny Tsen 2023-02-20 116 {
cdcecfd9991fe9a Danny Tsen 2023-02-20 117 __be32 counter = cpu_to_be32(1);
cdcecfd9991fe9a Danny Tsen 2023-02-20 118
cdcecfd9991fe9a Danny Tsen 2023-02-20 119 aes_p8_encrypt(hash->H, hash->H, rdkey);
cdcecfd9991fe9a Danny Tsen 2023-02-20 120 set_subkey(hash->H);
cdcecfd9991fe9a Danny Tsen 2023-02-20 @121 gcm_init_htable(hash->Htable+32, hash->H);
cdcecfd9991fe9a Danny Tsen 2023-02-20 122
cdcecfd9991fe9a Danny Tsen 2023-02-20 123 *((__be32 *)(iv+12)) = counter;
cdcecfd9991fe9a Danny Tsen 2023-02-20 124
cdcecfd9991fe9a Danny Tsen 2023-02-20 125 gctx->Plen = 0;
cdcecfd9991fe9a Danny Tsen 2023-02-20 126
cdcecfd9991fe9a Danny Tsen 2023-02-20 127 /*
cdcecfd9991fe9a Danny Tsen 2023-02-20 128 * Encrypt counter vector as iv tag and increment counter.
cdcecfd9991fe9a Danny Tsen 2023-02-20 129 */
cdcecfd9991fe9a Danny Tsen 2023-02-20 130 aes_p8_encrypt(iv, gctx->ivtag, rdkey);
cdcecfd9991fe9a Danny Tsen 2023-02-20 131
cdcecfd9991fe9a Danny Tsen 2023-02-20 132 counter = cpu_to_be32(2);
cdcecfd9991fe9a Danny Tsen 2023-02-20 133 *((__be32 *)(iv+12)) = counter;
cdcecfd9991fe9a Danny Tsen 2023-02-20 134 memcpy(gctx->iv, iv, 16);
cdcecfd9991fe9a Danny Tsen 2023-02-20 135
cdcecfd9991fe9a Danny Tsen 2023-02-20 136 gctx->aadLen = assoclen;
cdcecfd9991fe9a Danny Tsen 2023-02-20 137 memset(gctx->aad_hash, 0, 16);
cdcecfd9991fe9a Danny Tsen 2023-02-20 138 if (assoclen)
cdcecfd9991fe9a Danny Tsen 2023-02-20 139 set_aad(gctx, hash, assoc, assoclen);
cdcecfd9991fe9a Danny Tsen 2023-02-20 140 }
cdcecfd9991fe9a Danny Tsen 2023-02-20 141
:::::: The code at line 121 was first introduced by commit
:::::: cdcecfd9991fe9aac8160a9731b0ffd1e702d19d crypto: p10-aes-gcm - Glue code for AES/GCM stitched implementation
:::::: TO: Danny Tsen <dtsen@linux.ibm.com>
:::::: CC: Herbert Xu <herbert@gondor.apana.org.au>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: arch/powerpc/crypto/aes-gcm-p10-glue.c:121:9: error: 'gcm_init_htable' accessing 256 bytes in a region of size 224
2023-10-28 16:54 arch/powerpc/crypto/aes-gcm-p10-glue.c:121:9: error: 'gcm_init_htable' accessing 256 bytes in a region of size 224 kernel test robot
@ 2023-11-17 10:22 ` Herbert Xu
0 siblings, 0 replies; 2+ messages in thread
From: Herbert Xu @ 2023-11-17 10:22 UTC (permalink / raw)
To: kernel test robot
Cc: Danny Tsen, oe-kbuild-all, linux-kernel, Linux Crypto Mailing List
On Sun, Oct 29, 2023 at 12:54:22AM +0800, kernel test robot wrote:
>
> arch/powerpc/crypto/aes-gcm-p10-glue.c: In function 'gcmp10_init':
> >> arch/powerpc/crypto/aes-gcm-p10-glue.c:121:9: error: 'gcm_init_htable' accessing 256 bytes in a region of size 224 [-Werror=stringop-overflow=]
> 121 | gcm_init_htable(hash->Htable+32, hash->H);
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> arch/powerpc/crypto/aes-gcm-p10-glue.c:121:9: note: referencing argument 1 of type 'unsigned char[256]'
> arch/powerpc/crypto/aes-gcm-p10-glue.c:121:9: note: referencing argument 2 of type 'unsigned char[16]'
> arch/powerpc/crypto/aes-gcm-p10-glue.c:41:17: note: in a call to function 'gcm_init_htable'
> 41 | asmlinkage void gcm_init_htable(unsigned char htable[256], unsigned char Xi[16]);
> | ^~~~~~~~~~~~~~~
> cc1: all warnings being treated as errors
Danny, can you please look into this error?
Perhaps htable should be changed to 224?
Thanks,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
^ permalink raw reply [flat|nested] 2+ messages in thread
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2023-10-28 16:54 arch/powerpc/crypto/aes-gcm-p10-glue.c:121:9: error: 'gcm_init_htable' accessing 256 bytes in a region of size 224 kernel test robot
2023-11-17 10:22 ` Herbert Xu
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