Re: [PATCH v2 0/8] NFC: fix device allocation and nfcmrvl crashes
From: Johan Hovold
Date: Tue Apr 18 2017 - 06:09:28 EST
On Thu, Mar 30, 2017 at 12:15:34PM +0200, Johan Hovold wrote:
> This started out with the observation that the nfcmrvl_uart driver
> unconditionally dereferenced the tty class device despite the fact that
> not every tty has an associated struct device (Unix98 ptys). Some
> further changes were needed in the common nfcmrvl code to fully address
> this, some of which also incidentally fixed a few related bugs (e.g.
> resource leaks in error paths).
>
> While fixing this I stumbled over a regression in NFC core that lead to
> broken registration error paths and misnamed workqueues.
>
> Note that this has only been tested by configuring the n_hci line
> discipline for different ttys without any actual NFC hardware connected.
> Johan Hovold (8):
> NFC: fix broken device allocation
> NFC: nfcmrvl_uart: add missing tty-device sanity check
> NFC: nfcmrvl: do not use device-managed resources
> NFC: nfcmrvl: use nfc-device for firmware download
> NFC: nfcmrvl: fix firmware-management initialisation
> NFC: nfcmrvl_uart: fix device-node leak during probe
> NFC: nfcmrvl_usb: use interface as phy device
> NFC: nfcmrvl: allow gpio 0 for reset signalling
Any chance of getting these into 4.12, Samuel?
Note that patches 2 and 4 fixes NULL-derefs that can be triggered by an
unprivileged user.
Thanks,
Johan