linux-iio.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Alison Schofield <amsfield22@gmail.com>
To: jic23@kernel.org
Cc: knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net,
	linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] tools: iio: iio_generic_buffer: initialize channel array pointer
Date: Tue, 26 Jul 2016 20:17:43 -0700	[thread overview]
Message-ID: <20160727031734.GA31933@d830.WORKGROUP> (raw)

Uninitialized channel pointer causes segmentation fault when we
call free(channel) during cleanup() with no channels initialized.
This happens when you exit early for usage errors.  Initialize
the pointer to NULL when it is declared.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
---
 tools/iio/iio_generic_buffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/iio/iio_generic_buffer.c b/tools/iio/iio_generic_buffer.c
index 0e8a1f7..ae68bf0 100644
--- a/tools/iio/iio_generic_buffer.c
+++ b/tools/iio/iio_generic_buffer.c
@@ -348,7 +348,7 @@ int main(int argc, char **argv)
 	int notrigger = 0;
 	char *dummy;
 
-	struct iio_channel_info *channels;
+	struct iio_channel_info *channels = NULL;
 
 	register_cleanup();
 
-- 
2.1.4

             reply	other threads:[~2016-07-27  3:17 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-27  3:17 Alison Schofield [this message]
2016-07-27  8:12 ` [PATCH] tools: iio: iio_generic_buffer: initialize channel array pointer Gregor Boirie
2016-08-15 16:06   ` Jonathan Cameron

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=20160727031734.GA31933@d830.WORKGROUP \
    --to=amsfield22@gmail.com \
    --cc=jic23@kernel.org \
    --cc=knaack.h@gmx.de \
    --cc=lars@metafoo.de \
    --cc=linux-iio@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=pmeerw@pmeerw.net \
    /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;
as well as URLs for NNTP newsgroup(s).