Linux MIPS Architecture development
 help / color / mirror / Atom feed
From: Stefan Agner <stefan@agner.ch>
To: lars@metafoo.de
Cc: linux-mips@linux-mips.org
Subject: dma: jz4740: Null pointer dereference
Date: Tue, 08 Jul 2014 18:41:16 +0200	[thread overview]
Message-ID: <82522335fb2ef700d5a94f9217cbdff6@agner.ch> (raw)

Hi Lars,

While looking through different DMA drivers, just stumbled upon this
inside jz4740_dma_chan_irq:

if (chan->next_sg == chan->desc->num_sgs) {
	chan->desc = NULL;
	vchan_cookie_complete(&chan->desc->vdesc);
                                         ^ null pointer dereference
}

I'm not sure what the correct fix is, hence I thought I report it to you
as author of the driver.

--
Stefan

             reply	other threads:[~2014-07-08 16:42 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-08 16:41 Stefan Agner [this message]
2014-07-08 16:50 ` dma: jz4740: Null pointer dereference Lars-Peter Clausen

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=82522335fb2ef700d5a94f9217cbdff6@agner.ch \
    --to=stefan@agner.ch \
    --cc=lars@metafoo.de \
    --cc=linux-mips@linux-mips.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox