linux-kernel - drivers/crypto/sa2ul.c:1349:33: warning: cast from pointer to integer of different size

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Date:   Sun, 9 Aug 2020 08:46:36 +0800
From:   kernel test robot <lkp@...el.com>
To:     Keerthy <j-keerthy@...com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Tero Kristo <t-kristo@...com>
Subject: drivers/crypto/sa2ul.c:1349:33: warning: cast from pointer to
 integer of different size

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   06a81c1c7db9bd5de0bd38cd5acc44bb22b99150
commit: 2dc53d0047458e28ed05b4548844ba78199857bf crypto: sa2ul - add sha1/sha256/sha512 support
date:   2 weeks ago
config: m68k-randconfig-r002-20200809 (attached as .config)
compiler: m68k-linux-gcc (GCC) 9.3.0
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
        git checkout 2dc53d0047458e28ed05b4548844ba78199857bf
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   In file included from include/linux/err.h:5,
                    from include/linux/clk.h:12,
                    from drivers/crypto/sa2ul.c:11:
   include/linux/scatterlist.h: In function 'sg_set_buf':
   arch/m68k/include/asm/page_no.h:33:50: warning: ordered comparison of pointer with null pointer [-Wextra]
      33 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
         |                                                  ^~
   include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
      78 | # define unlikely(x) __builtin_expect(!!(x), 0)
         |                                          ^
   include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON'
     143 |  BUG_ON(!virt_addr_valid(buf));
         |  ^~~~~~
   include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid'
     143 |  BUG_ON(!virt_addr_valid(buf));
         |          ^~~~~~~~~~~~~~~
   In file included from include/linux/device.h:15,
                    from include/linux/dmaengine.h:8,
                    from drivers/crypto/sa2ul.c:12:
   drivers/crypto/sa2ul.c: In function 'sa_sha_init':
>> drivers/crypto/sa2ul.c:1349:33: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1349 |   crypto_ahash_digestsize(tfm), (u64)rctx);
         |                                 ^
   include/linux/dev_printk.h:123:47: note: in definition of macro 'dev_dbg'
     123 |   dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
         |                                               ^~~~~~~~~~~

vim +1349 drivers/crypto/sa2ul.c

  1341	
  1342	static int sa_sha_init(struct ahash_request *req)
  1343	{
  1344		struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
  1345		struct sa_sha_req_ctx *rctx = ahash_request_ctx(req);
  1346		struct sa_tfm_ctx *ctx = crypto_ahash_ctx(tfm);
  1347	
  1348		dev_dbg(sa_k3_dev, "init: digest size: %d, rctx=%llx\n",
> 1349			crypto_ahash_digestsize(tfm), (u64)rctx);
  1350	
  1351		ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback.ahash);
  1352		rctx->fallback_req.base.flags =
  1353			req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
  1354	
  1355		return crypto_ahash_init(&rctx->fallback_req);
  1356	}
  1357	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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