svn commit: r365788 - head/sys/kern

[Mark Johnston]

Author: markj
Date: Tue Sep 15 23:03:56 2020
New Revision: 365788
URL: https://svnweb.freebsd.org/changeset/base/365788

Log:
  Fix locking in uipc_accept().
  
  Reported by:	cy
  MFC after:	1 week
  Sponsored by:	The FreeBSD Foundation

Modified:
  head/sys/kern/uipc_usrreq.c

Modified: head/sys/kern/uipc_usrreq.c
==============================================================================
--- head/sys/kern/uipc_usrreq.c	Tue Sep 15 22:19:16 2020	(r365787)
+++ head/sys/kern/uipc_usrreq.c	Tue Sep 15 23:03:56 2020	(r365788)
@@ -506,7 +506,10 @@ uipc_accept(struct socket *so, struct sockaddr **nam)
 	else
 		sa = &sun_noname;
 	bcopy(sa, *nam, sa->sa_len);
-	unp_pcb_unlock_pair(unp, unp2);
+	if (unp2 != NULL)
+		unp_pcb_unlock_pair(unp, unp2);
+	else
+		UNP_PCB_UNLOCK(unp);
 	return (0);
 }