This is a note to let you know that I've just added the patch titled
iio: inkern: fix a NULL dereference on error
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iio-inkern-fix-a-null-dereference-on-error.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d81dac3c1c5295c61b15293074ac2bd3254e1875 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Tue, 26 Jan 2016 12:25:21 +0300
Subject: iio: inkern: fix a NULL dereference on error
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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);
}
Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are
queue-4.4/intel_scu_ipcutil-underflow-in-scu_reg_access.patch
queue-4.4/iio-inkern-fix-a-null-dereference-on-error.patch
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