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From: Dan Carpenter <dan.carpenter@oracle.com>
To: harsh@chelsio.com
Cc: linux-crypto@vger.kernel.org
Subject: [bug report] crypto: chcr - Add AEAD algos.
Date: Thu, 1 Dec 2016 23:48:58 +0300	[thread overview]
Message-ID: <20161201204858.GA10660@mwanda> (raw)

Hello Harsh Jain,

This is a semi-automatic email about new static checker warnings.

The patch 2debd3325e55: "crypto: chcr - Add AEAD algos." from Nov 29, 
2016, leads to the following Smatch complaint:

	drivers/crypto/chelsio/chcr_algo.c:2460 chcr_aead_op()
	warn: variable dereferenced before check 'ctx' (see line 2457)

	drivers/crypto/chelsio/chcr_algo.c:2460 chcr_aead_op()
	warn: variable dereferenced before check 'ctx->dev' (see line 2457)

drivers/crypto/chelsio/chcr_algo.c
  2456		struct chcr_context *ctx = crypto_aead_ctx(tfm);
  2457		struct uld_ctx *u_ctx = ULD_CTX(ctx);
                                        ^^^^^^^^^^^^
Derefences both.

  2458		struct sk_buff *skb;
  2459	
  2460		if (ctx && !ctx->dev) {
                    ^^^^^^^^^^^^^^^^
Check is too late.

  2461			pr_err("chcr : %s : No crypto device.\n", __func__);
  2462			return -ENXIO;

regards,
dan carpenter

             reply	other threads:[~2016-12-01 20:49 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-01 20:48 Dan Carpenter [this message]
2017-01-24 10:43 ` Dan Carpenter

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