This is a note to let you know that I've just added the patch titled
of: fix of_device_get_modalias returned length when truncating buffers
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: of-fix-of_device_get_modalias-returned-length-when-truncating-buffers.patch and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Sun Mar 18 16:55:33 CET 2018
From: Rob Herring robh@kernel.org Date: Mon, 16 Jan 2017 14:28:39 -0600 Subject: of: fix of_device_get_modalias returned length when truncating buffers
From: Rob Herring robh@kernel.org
[ Upstream commit bcf54d5385abaea9c8026aae6f4eeb348671a52d ]
If the length of the modalias is greater than the buffer size, then the modalias is truncated. However the untruncated length is returned which will cause an error. Fix this to return the truncated length. If an error in the case was desired, then then we should just return -ENOMEM.
The reality is no device will ever have 4KB of compatible strings to hit this case.
Signed-off-by: Rob Herring robh@kernel.org Cc: Frank Rowand frowand.list@gmail.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/of/device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/of/device.c +++ b/drivers/of/device.c @@ -223,7 +223,7 @@ ssize_t of_device_get_modalias(struct de str[i] = '_'; }
- return tsize; + return repend; } EXPORT_SYMBOL_GPL(of_device_get_modalias);
Patches currently in stable-queue which might be from robh@kernel.org are
queue-4.9/of-fix-of_device_get_modalias-returned-length-when-truncating-buffers.patch