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Kiruthika Varadarajan 43b417e412 usb: gadget: ether: Fix race between gether_disconnect and rx_submit

commit d29fcf7078 upstream.

On spin lock release in rx_submit, gether_disconnect get a chance to
run, it makes port_usb NULL, rx_submit access NULL port USB, hence null
pointer crash.

Fixed by releasing the lock in rx_submit after port_usb is used.

Fixes: 2b3d942c48 ("usb ethernet gadget: split out network core")
Cc: <stable@vger.kernel.org>
Signed-off-by: Kiruthika Varadarajan <Kiruthika.Varadarajan@harman.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-07-14 08:09:49 +02:00

function

usb: gadget: ether: Fix race between gether_disconnect and rx_submit

2019-07-14 08:09:49 +02:00

legacy

Merge tag 'usb-for-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

2019-02-15 09:08:57 +01:00

udc

usb: gadget: udc: lpc32xx: allocate descriptor with GFP_ATOMIC

2019-07-10 09:52:24 +02:00

composite.c

usb: gadget: Fix OS descriptors support