Author: eugen Date: Sat Oct 27 04:45:28 2018 New Revision: 339806 URL: https://svnweb.freebsd.org/changeset/base/339806
Log: Prevent stf(4) from panicing due to unprotected access to INADDR_HASH. PR: 220078 MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D12457 Tested-by: Cassiano Peixoto and others Modified: head/sys/net/if_stf.c Modified: head/sys/net/if_stf.c ============================================================================== --- head/sys/net/if_stf.c Sat Oct 27 04:10:42 2018 (r339805) +++ head/sys/net/if_stf.c Sat Oct 27 04:45:28 2018 (r339806) @@ -367,6 +367,7 @@ stf_encapcheck(const struct mbuf *m, int off, int prot static int stf_getsrcifa6(struct ifnet *ifp, struct in6_addr *addr, struct in6_addr *mask) { + struct rm_priotracker in_ifa_tracker; struct ifaddr *ia; struct in_ifaddr *ia4; struct in6_ifaddr *ia6; @@ -382,9 +383,11 @@ stf_getsrcifa6(struct ifnet *ifp, struct in6_addr *add continue; bcopy(GET_V4(&sin6->sin6_addr), &in, sizeof(in)); + IN_IFADDR_RLOCK(&in_ifa_tracker); LIST_FOREACH(ia4, INADDR_HASH(in.s_addr), ia_hash) if (ia4->ia_addr.sin_addr.s_addr == in.s_addr) break; + IN_IFADDR_RUNLOCK(&in_ifa_tracker); if (ia4 == NULL) continue; _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
