linux-kernel - Re: [PATCH 1/2] NFC: delete null dereference

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Message-ID: <20151019125750.GG7340@mwanda>
Date:	Mon, 19 Oct 2015 15:57:50 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Julia Lawall <Julia.Lawall@...6.fr>
Cc:	Lauro Ramos Venancio <lauro.venancio@...nbossa.org>,
	kernel-janitors@...r.kernel.org,
	Aloisio Almeida Jr <aloisio.almeida@...nbossa.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	"David S. Miller" <davem@...emloft.net>,
	linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] NFC: delete null dereference

The next goto after that is messed up as well:

  1056          dev = nfc_get_device(idx);
  1057          if (!dev)
  1058                  return -ENODEV;
  1059  
  1060          device_lock(&dev->dev);
  1061  
  1062          local = nfc_llcp_find_local(dev);
  1063          if (!local) {
  1064                  nfc_put_device(dev);

It should not call nfc_put_device() because that happens after goto
exit.

  1065                  rc = -ENODEV;
  1066                  goto exit;
  1067          }

regards,
dan carpenter
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