From: Bjørn Mork <bjorn@xxxxxxx>
Date: Fri, 2 May 2014 23:27:00 +0200
> Commit 4d619f625a60 ("net: cdc_ncm: no point in filling up the NTBs
> if we send ZLPs") changed the padding logic for devices with the ZLP
> flag set. This meant that frames of any size will be sent without
> additional padding, except for the single byte added if the size is
> a multiple of the USB packet size. But if the unpadded size is
> identical to the maximum frame size, and the maximum size is a
> multiplum of the USB packet size, then this one-byte padding will
> overflow the buffer.
>
> Prevent padding if already at maximum frame size, letting usbnet
> transmit a ZLP instead in this case.
>
> Fixes: 4d619f625a60 ("net: cdc_ncm: no point in filling up the NTBs if we send ZLPs")
> Reported by: Yu-an Shih <yshih@xxxxxxxxxx>
> Signed-off-by: Bjørn Mork <bjorn@xxxxxxx>
> ---
> Please add this to the stable v3.13 and v3.14 queues as well. Thanks.
Applied and queued up for -stable, thanks.
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