svn commit: r231976 - head/sys/kern

[Mikolaj Golub]

Author: trociny
Date: Tue Feb 21 19:40:13 2012
New Revision: 231976
URL: http://svn.freebsd.org/changeset/base/231976

Log:
  unp_connect() may use a shared lock on the vnode to fetch the socket.
  
  Suggested by:	jhb
  Reviewed by:	jhb, kib, rwatson
  MFC after:	2 weeks

Modified:
  head/sys/kern/uipc_usrreq.c

Modified: head/sys/kern/uipc_usrreq.c
==============================================================================
--- head/sys/kern/uipc_usrreq.c	Tue Feb 21 19:35:59 2012	(r231975)
+++ head/sys/kern/uipc_usrreq.c	Tue Feb 21 19:40:13 2012	(r231976)
@@ -1273,8 +1273,8 @@ unp_connect(struct socket *so, struct so
 	UNP_PCB_UNLOCK(unp);
 
 	sa = malloc(sizeof(struct sockaddr_un), M_SONAME, M_WAITOK);
-	NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | LOCKLEAF, UIO_SYSSPACE, buf,
-	    td);
+	NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | LOCKSHARED | LOCKLEAF,
+	    UIO_SYSSPACE, buf, td);
 	error = namei(&nd);
 	if (error)
 		vp = NULL;