mac80211: fix possible null-pointer de-reference
This patch not only fixes a null-pointer de-reference that would be triggered by a PLINK_OPEN frame with mis- matching/incompatible mesh configuration, but also responds correctly to non-compatible PLINK_OPEN frames by generating a PLINK_CLOSE with the right reason code. The original bug was detected by smatch. ( http://repo.or.cz/w/smatch.git ) net/mac80211/mesh_plink.c +574 mesh_rx_plink_frame(168) error: we previously assumed 'sta' could be null. Cc: <stable@kernel.org> Reviewed-and-Tested-by:Steve deRosier <steve@cozybit.com> Reviewed-and-Tested-by:
Javier Cardona <javier@cozybit.com> Acked-by:
Johannes Berg <johannes@sipsolutions.net> Signed-off-by:
Christian Lamparter <chunkeey@googlemail.com> Signed-off-by:
John W. Linville <linville@tuxdriver.com>
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