Re: [PATCH v2 1/3] dm-inlinecrypt: Add inline encryption support

[kernel test robot <lkp@intel.com>]

Hi Md,

kernel test robot noticed the following build errors:

[auto build test ERROR on device-mapper-dm/for-next]
[also build test ERROR on axboe-block/for-next linus/master song-md/md-next v6.11 next-20240916]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Md-Sadre-Alam/dm-inlinecrypt-Add-inline-encryption-support/20240916-170452
base:   https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git for-next
patch link:    https://lore.kernel.org/r/20240916085741.1636554-2-quic_mdalam%40quicinc.com
patch subject: [PATCH v2 1/3] dm-inlinecrypt: Add inline encryption support
config: openrisc-randconfig-r062-20240917 (https://download.01.org/0day-ci/archive/20240917/202409171209.aEtxsPez-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240917/202409171209.aEtxsPez-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/202409171209.aEtxsPez-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/md/dm-inline-crypt.c: In function 'crypt_prepare_inline_crypt_key':
>> drivers/md/dm-inline-crypt.c:81:15: error: implicit declaration of function 'blk_crypto_init_key' [-Wimplicit-function-declaration]
      81 |         ret = blk_crypto_init_key(cc->blk_key, cc->key, cc->crypto_mode,
         |               ^~~~~~~~~~~~~~~~~~~
>> drivers/md/dm-inline-crypt.c:88:15: error: implicit declaration of function 'blk_crypto_start_using_key' [-Wimplicit-function-declaration]
      88 |         ret = blk_crypto_start_using_key(cc->dev->bdev, cc->blk_key);
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/md/dm-inline-crypt.c: In function 'crypt_destroy_inline_crypt_key':
>> drivers/md/dm-inline-crypt.c:104:17: error: implicit declaration of function 'blk_crypto_evict_key'; did you mean 'blk_crypto_register'? [-Wimplicit-function-declaration]
     104 |                 blk_crypto_evict_key(cc->dev->bdev, cc->blk_key);
         |                 ^~~~~~~~~~~~~~~~~~~~
         |                 blk_crypto_register
   drivers/md/dm-inline-crypt.c: In function 'crypt_inline_encrypt_submit':
>> drivers/md/dm-inline-crypt.c:121:17: error: implicit declaration of function 'bio_crypt_set_ctx' [-Wimplicit-function-declaration]
     121 |                 bio_crypt_set_ctx(bio, cc->blk_key, dun, GFP_KERNEL);
         |                 ^~~~~~~~~~~~~~~~~


vim +/blk_crypto_init_key +81 drivers/md/dm-inline-crypt.c

    72	
    73	static int crypt_prepare_inline_crypt_key(struct inlinecrypt_config *cc)
    74	{
    75		int ret;
    76	
    77		cc->blk_key = kzalloc(sizeof(*cc->blk_key), GFP_KERNEL);
    78		if (!cc->blk_key)
    79			return -ENOMEM;
    80	
  > 81		ret = blk_crypto_init_key(cc->blk_key, cc->key, cc->crypto_mode,
    82					  cc->iv_size, cc->sector_size);
    83		if (ret) {
    84			DMERR("Failed to init inline encryption key");
    85			goto bad_key;
    86		}
    87	
  > 88		ret = blk_crypto_start_using_key(cc->dev->bdev, cc->blk_key);
    89		if (ret) {
    90			DMERR("Failed to use inline encryption key");
    91			goto bad_key;
    92		}
    93	
    94		return 0;
    95	bad_key:
    96		kfree_sensitive(cc->blk_key);
    97		cc->blk_key = NULL;
    98		return ret;
    99	}
   100	
   101	static void crypt_destroy_inline_crypt_key(struct inlinecrypt_config *cc)
   102	{
   103		if (cc->blk_key) {
 > 104			blk_crypto_evict_key(cc->dev->bdev, cc->blk_key);
   105			kfree_sensitive(cc->blk_key);
   106			cc->blk_key = NULL;
   107		}
   108	}
   109	
   110	static void crypt_inline_encrypt_submit(struct dm_target *ti, struct bio *bio)
   111	{
   112		struct inlinecrypt_config *cc = ti->private;
   113		u64 dun[BLK_CRYPTO_DUN_ARRAY_SIZE];
   114	
   115		bio_set_dev(bio, cc->dev->bdev);
   116		if (bio_sectors(bio)) {
   117			memset(dun, 0, BLK_CRYPTO_MAX_IV_SIZE);
   118			bio->bi_iter.bi_sector = cc->start +
   119				dm_target_offset(ti, bio->bi_iter.bi_sector);
   120			dun[0] = le64_to_cpu(bio->bi_iter.bi_sector + cc->iv_offset);
 > 121			bio_crypt_set_ctx(bio, cc->blk_key, dun, GFP_KERNEL);
   122		}
   123	
   124		submit_bio_noacct(bio);
   125	}
   126	

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