[cryptodev:master 53/54] crypto/rsa-pkcs1pad.c:135:1: warning: 'pkcs1pad_encrypt_sign_complete' uses dynamic stack allocation

From: kbuild test robot <fengguang.wu@intel.com>
To: Andrzej Zaborowski <andrew.zaborowski@intel.com>
Cc: kbuild-all@01.org, linux-crypto@vger.kernel.org,
	Herbert Xu <herbert@gondor.apana.org.au>
Subject: [cryptodev:master 53/54] crypto/rsa-pkcs1pad.c:135:1: warning: 'pkcs1pad_encrypt_sign_complete' uses dynamic stack allocation
Date: Thu, 10 Dec 2015 02:49:27 +0800	[thread overview]
Message-ID: <201512100225.MWaG2I5C%fengguang.wu@intel.com> (raw)

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master
head:   161151d79ff4f7ed35d4ebb0eb7727a517c34ef2
commit: 3d5b1ecdea6fb94f8c61554fcb2ba776a2d3d0e6 [53/54] crypto: rsa - RSA padding algorithm
config: s390-allmodconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 3d5b1ecdea6fb94f8c61554fcb2ba776a2d3d0e6
        # save the attached .config to linux build tree
        make.cross ARCH=s390 

All warnings (new ones prefixed by >>):

   crypto/rsa-pkcs1pad.c: In function 'pkcs1pad_encrypt_sign_complete':
>> crypto/rsa-pkcs1pad.c:135:1: warning: 'pkcs1pad_encrypt_sign_complete' uses dynamic stack allocation
    }
    ^

vim +/pkcs1pad_encrypt_sign_complete +135 crypto/rsa-pkcs1pad.c

   119						sg_nents_for_len(req->dst,
   120							sizeof(zeros)),
   121						zeros, sizeof(zeros));
   122			}
   123	
   124			sg_pcopy_from_buffer(req->dst,
   125					sg_nents_for_len(req->dst, ctx->key_size),
   126					req_ctx->out_buf, req_ctx->child_req.dst_len,
   127					sizeof(zeros));
   128		}
   129		req->dst_len = ctx->key_size;
   130	
   131		kfree(req_ctx->in_buf);
   132		kzfree(req_ctx->out_buf);
   133	
   134		return err;
 > 135	}
   136	
   137	static void pkcs1pad_encrypt_sign_complete_cb(
   138			struct crypto_async_request *child_async_req, int err)
   139	{
   140		struct akcipher_request *req = child_async_req->data;
   141		struct crypto_async_request async_req;
   142	
   143		if (err == -EINPROGRESS)

---
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