linux-kernel - [ammarfaizi2-block:dhowells/linux-fs/netfs-linked-list 39/59] fs/netfs/crypto.c:208:1: warning: the frame size of 1056 bytes is larger than 1024 bytes

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Message-ID: <202206020658.yKznmUUi-lkp@intel.com>
Date:   Thu, 2 Jun 2022 07:05:15 +0800
From:   kernel test robot <lkp@...el.com>
To:     David Howells <dhowells@...hat.com>
Cc:     kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org
Subject: [ammarfaizi2-block:dhowells/linux-fs/netfs-linked-list 39/59]
 fs/netfs/crypto.c:208:1: warning: the frame size of 1056 bytes is larger
 than 1024 bytes

tree:   https://github.com/ammarfaizi2/linux-block dhowells/linux-fs/netfs-linked-list
head:   22ecc2fcdab4616e624408911ec1d54644e82030
commit: b5b1a16a9c1a2ff8c62ef0c952b5672b3c78800c [39/59] netfs: Perform content encryption
config: arm-randconfig-r001-20220531 (https://download.01.org/0day-ci/archive/20220602/202206020658.yKznmUUi-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.3.0
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
        # https://github.com/ammarfaizi2/linux-block/commit/b5b1a16a9c1a2ff8c62ef0c952b5672b3c78800c
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block dhowells/linux-fs/netfs-linked-list
        git checkout b5b1a16a9c1a2ff8c62ef0c952b5672b3c78800c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash fs/netfs/

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

All warnings (new ones prefixed by >>):

   fs/netfs/crypto.c: In function 'netfs_encrypt':
>> fs/netfs/crypto.c:208:1: warning: the frame size of 1056 bytes is larger than 1024 bytes [-Wframe-larger-than=]
     208 | }
         | ^


vim +208 fs/netfs/crypto.c

   133	
   134	/*
   135	 * Prepare a write request for writing.  We encrypt from wreq->buffer to
   136	 * wreq->buffer2.
   137	 */
   138	bool netfs_encrypt(struct netfs_io_request *wreq)
   139	{
   140		struct netfs_i_context *ctx = netfs_i_context(wreq->inode);
   141		struct scatterlist source_sg[16], dest_sg[16];
   142		unsigned int n_source, n_dest;
   143		size_t n, chunk, bsize = 1UL << ctx->crypto_bshift;
   144		loff_t pos;
   145		int ret;
   146	
   147		_enter("");
   148	
   149		trace_netfs_rreq(wreq, netfs_rreq_trace_encrypt);
   150	
   151		pos = wreq->start;
   152		n = wreq->len;
   153		_debug("ENCRYPT %llx-%llx", pos, pos + n - 1);
   154	
   155		for (; n > 0; n -= chunk, pos += chunk) {
   156			chunk = min(n, bsize);
   157	
   158			switch (wreq->buffering) {
   159			case NETFS_ENC_BUFFER_TO_BOUNCE:
   160				ret = netfs_xarray_to_sglist(&wreq->buffer, pos, chunk,
   161							     source_sg, ARRAY_SIZE(source_sg));
   162				break;
   163			case NETFS_ENC_DIRECT_TO_BOUNCE:
   164				ret = netfs_iter_to_sglist(&wreq->direct_iter, chunk,
   165							   dest_sg, ARRAY_SIZE(dest_sg));
   166				break;
   167			case NETFS_COPY_ENC_BOUNCE:
   168				ret = netfs_xarray_to_sglist(&wreq->bounce, pos, chunk,
   169							     source_sg, ARRAY_SIZE(source_sg));
   170				break;
   171			default:
   172				BUG();
   173			}
   174			if (ret < 0)
   175				goto error;
   176			n_source = ret;
   177	
   178			switch (wreq->buffering) {
   179			case NETFS_ENC_BUFFER_TO_BOUNCE:
   180			case NETFS_ENC_DIRECT_TO_BOUNCE:
   181				ret = netfs_xarray_to_sglist(&wreq->bounce, pos, chunk,
   182							     dest_sg, ARRAY_SIZE(dest_sg));
   183				break;
   184			case NETFS_COPY_ENC_BOUNCE:
   185				memcpy(dest_sg, source_sg, sizeof(dest_sg));
   186				ret = n_source;
   187				break;
   188			default:
   189				BUG();
   190			}
   191			if (ret < 0)
   192				goto error;
   193			n_dest = ret;
   194	
   195			ret = ctx->ops->encrypt_block(wreq, pos, chunk,
   196						      source_sg, n_source, dest_sg, n_dest);
   197			if (ret < 0)
   198				goto error_failed;
   199		}
   200	
   201		return true;
   202	
   203	error_failed:
   204		trace_netfs_failure(wreq, NULL, ret, netfs_fail_encryption);
   205	error:
   206		wreq->error = ret;
   207		return false;
 > 208	}

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp