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authorGuillaume Nault <g.nault@alphalink.fr>2017-03-31 13:02:25 +0200
committerDavid S. Miller <davem@davemloft.net>2017-04-02 05:16:41 +0200
commit61b9a047729bb230978178bca6729689d0c50ca2 (patch)
treef8dfc3ba7bfc78123ad285d0b846c8b7c865129c /net/key
parentsctp: use right in and out stream cnt (diff)
downloadlinux-61b9a047729bb230978178bca6729689d0c50ca2.tar.xz
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l2tp: fix race in l2tp_recv_common()
Taking a reference on sessions in l2tp_recv_common() is racy; this has to be done by the callers. To this end, a new function is required (l2tp_session_get()) to atomically lookup a session and take a reference on it. Callers then have to manually drop this reference. Fixes: fd558d186df2 ("l2tp: Split pppol2tp patch into separate l2tp and ppp parts") Signed-off-by: Guillaume Nault <g.nault@alphalink.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/key')
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