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misc: bcm-vk: fix tty registration race
authorJohan Hovold <johan@kernel.org>
Fri, 17 Sep 2021 11:57:36 +0000 (13:57 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 21 Sep 2021 14:17:15 +0000 (16:17 +0200)
commitb34622076c31d7ee303b1087e15741f26787d8f4
tree16057b182a4ce007a26f7c912ee1ceddc6587052tree | snapshot
parent3754db298037fdef24a8c5d799d962c05c089285commit | diff
misc: bcm-vk: fix tty registration race

Make sure to set the tty class-device driver data before registering the
tty to avoid having a racing open() dereference a NULL pointer.

Fixes: 11c370bc3b2f ("misc: bcm-vk: add ttyVK support")
Cc: stable@vger.kernel.org # 5.12
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210917115736.5816-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/misc/bcm-vk/bcm_vk_tty.c diff | blob | history
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