Author: kp Date: Thu Jun 18 21:23:41 2015 New Revision: 284580 URL: https://svnweb.freebsd.org/changeset/base/284580
Log: Merge r284222, r284260 pf: address family must be set when creating a pf_fragment Fix a panic when handling fragmented ip4 packets with 'drop-ovl' set. In that scenario we take a different branch in pf_normalize_ip(), taking us to pf_fragcache() (rather than pf_reassemble()). In pf_fragcache() we create a pf_fragment, but do not set the address family. This leads to a panic when we try to insert that into pf_frag_tree because pf_addr_cmp(), which is used to compare the pf_fragments doesn't know what to do if the address family is not set. Simply ensure that the address family is set correctly (always AF_INET in this path). When we try to look up a pf_fragment with pf_find_fragment() we compare (see pf_frag_compare()) addresses (and family), but also protocol. We failed to save the protocol to the pf_fragment in pf_fragcache(), resulting in failing reassembly. PR: 200330 Differential Revision: https://reviews.freebsd.org/D2824 Reviewed by: gnn Modified: stable/10/sys/netpfil/pf/pf_norm.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/netpfil/pf/pf_norm.c ============================================================================== --- stable/10/sys/netpfil/pf/pf_norm.c Thu Jun 18 21:21:52 2015 (r284579) +++ stable/10/sys/netpfil/pf/pf_norm.c Thu Jun 18 21:23:41 2015 (r284580) @@ -825,6 +825,8 @@ pf_fragcache(struct mbuf **m0, struct ip (*frag)->fr_max = 0; (*frag)->fr_src.v4 = h->ip_src; (*frag)->fr_dst.v4 = h->ip_dst; + (*frag)->fr_af = AF_INET; + (*frag)->fr_proto = h->ip_p; (*frag)->fr_id = h->ip_id; (*frag)->fr_timeout = time_uptime; _______________________________________________ svn-src-stable-10@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-stable-10 To unsubscribe, send any mail to "svn-src-stable-10-unsubscr...@freebsd.org"
