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| author | thompsa <thompsa@FreeBSD.org> | 2011-07-07 20:02:09 +0000 |
|---|---|---|
| committer | thompsa <thompsa@FreeBSD.org> | 2011-07-07 20:02:09 +0000 |
| commit | 9d0e437193c863bf1af8d6104a6d9d7b8c7aebe0 (patch) | |
| tree | f8bd80ef2d8cc60a1a9d283c5ae9f2436e69fb48 /sys/net/if_lagg.c | |
| parent | f1301f9a76f64361bb7eefc6d0e275bedb2b2b4c (diff) | |
| download | FreeBSD-src-9d0e437193c863bf1af8d6104a6d9d7b8c7aebe0.zip FreeBSD-src-9d0e437193c863bf1af8d6104a6d9d7b8c7aebe0.tar.gz | |
Grab the rlock before checking if our interface is enabled, it could be
possible to hit a dead pointer when changing interfaces.
PR: kern/156978
Submitted by: Andrew Boyer
MFC after: 1 week
Diffstat (limited to 'sys/net/if_lagg.c')
| -rw-r--r-- | sys/net/if_lagg.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/net/if_lagg.c b/sys/net/if_lagg.c index 2548c65..d540966 100644 --- a/sys/net/if_lagg.c +++ b/sys/net/if_lagg.c @@ -1221,14 +1221,15 @@ lagg_input(struct ifnet *ifp, struct mbuf *m) struct lagg_softc *sc = lp->lp_softc; struct ifnet *scifp = sc->sc_ifp; + LAGG_RLOCK(sc); if ((scifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || (lp->lp_flags & LAGG_PORT_DISABLED) || sc->sc_proto == LAGG_PROTO_NONE) { + LAGG_RUNLOCK(sc); m_freem(m); return (NULL); } - LAGG_RLOCK(sc); ETHER_BPF_MTAP(scifp, m); m = (*sc->sc_input)(sc, lp, m); |
