Author: tuexen Date: Sat Sep 28 13:05:37 2019 New Revision: 352842 URL: https://svnweb.freebsd.org/changeset/base/352842
Log: Ensure that the INP lock is released before leaving [gs]etsockopt() for RACK specific socket options. These issues were found by a syzkaller instance. Reviewed by: rrs@ Sponsored by: Netflix, Inc. Differential Revision: https://reviews.freebsd.org/D21825 Modified: head/sys/netinet/tcp_stacks/rack.c Modified: head/sys/netinet/tcp_stacks/rack.c ============================================================================== --- head/sys/netinet/tcp_stacks/rack.c Sat Sep 28 12:02:43 2019 (r352841) +++ head/sys/netinet/tcp_stacks/rack.c Sat Sep 28 13:05:37 2019 (r352842) @@ -10261,10 +10261,10 @@ rack_set_sockopt(struct socket *so, struct sockopt *so break; case TCP_RACK_TLP_INC_VAR: /* Does TLP include rtt variance in t-o */ - return (EINVAL); + error = EINVAL; break; case TCP_RACK_IDLE_REDUCE_HIGH: - return (EINVAL); + error = EINVAL; break; case TCP_DELACK: if (optval == 0) @@ -10329,6 +10329,7 @@ rack_get_sockopt(struct socket *so, struct sockopt *so * add a option that is not a int, then this will have quite an * impact to this routine. */ + error = 0; switch (sopt->sopt_name) { case TCP_RACK_DO_DETECTION: optval = rack->do_detection; @@ -10398,10 +10399,10 @@ rack_get_sockopt(struct socket *so, struct sockopt *so break; case TCP_RACK_TLP_INC_VAR: /* Does TLP include rtt variance in t-o */ - return (EINVAL); + error = EINVAL; break; case TCP_RACK_IDLE_REDUCE_HIGH: - return (EINVAL); + error = EINVAL; break; case TCP_RACK_MIN_PACE: optval = rack->r_enforce_min_pace; @@ -10423,7 +10424,9 @@ rack_get_sockopt(struct socket *so, struct sockopt *so break; } INP_WUNLOCK(inp); - error = sooptcopyout(sopt, &optval, sizeof optval); + if (error == 0) { + error = sooptcopyout(sopt, &optval, sizeof optval); + } return (error); } _______________________________________________ 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"
