lkml.org 
[lkml]   [2016]   [Feb]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.4 050/137] iio: inkern: fix a NULL dereference on error
Date
4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@oracle.com>

commit d81dac3c1c5295c61b15293074ac2bd3254e1875 upstream.

In twl4030_bci_probe() there are some failure paths where we call
iio_channel_release() with a NULL pointer. (Apparently, that driver can
opperate without a valid channel pointer). Let's fix it by adding a
NULL check in iio_channel_release().

Fixes: 2202e1fc5a29 ('drivers: power: twl4030_charger: fix link problems when building as module')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/iio/inkern.c | 2 ++
1 file changed, 2 insertions(+)

--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -351,6 +351,8 @@ EXPORT_SYMBOL_GPL(iio_channel_get);

void iio_channel_release(struct iio_channel *channel)
{
+ if (!channel)
+ return;
iio_device_put(channel->indio_dev);
kfree(channel);
}

\
 
 \ /
  Last update: 2016-02-24 06:01    [W:0.604 / U:0.156 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site