fix for null deref in slirp soread when the so doesn't have a tcpcb yet

2017-01-20 02:05:55 -08:00 · 2017-01-20 02:05:55 -08:00 · 68353ca6b1
parent 52a36f24bb
commit 68353ca6b1
1 changed files with 4 additions and 0 deletions
--- a/BasiliskII/src/slirp/socket.c
+++ b/BasiliskII/src/slirp/socket.c
@ -108,6 +108,10 @@ soread(so)
 	struct sbuf *sb = &so->so_snd;
 	u_int len = sb->sb_datalen - sb->sb_cc;
 	struct iovec iov[2];
+
+	if (!so->so_tcpcb) {
+		so->so_tcpcb = tcp_newtcpcb(so); // but how did we get in this state? should we just default mss for it?
+	}
 	u_int mss = so->so_tcpcb->t_maxseg;
 	
 	DEBUG_CALL("soread");