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From: Marko Zec <zec@FreeBSD.org>
Date: Thu, 17 Sep 2009 11:03:37 +0000 (UTC)
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Subject: svn commit: r197267 - in stable/8/sys: . amd64/include/xen
	cddl/contrib/opensolaris compat/linux contrib/dev/acpica
	contrib/pf dev/xen/xenpci
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Author: zec
Date: Thu Sep 17 11:03:37 2009
New Revision: 197267
URL: http://svn.freebsd.org/changeset/base/197267

Log:
  MFC r197176:
  
    Lock the ifnet list while iterating over it.
  
    Submitted by: julian
    MFC after:    3 days
  
  Approved by:	re (kensmith)

Modified:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/compat/linux/linux_ioctl.c
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)

Modified: stable/8/sys/compat/linux/linux_ioctl.c
==============================================================================
--- stable/8/sys/compat/linux/linux_ioctl.c	Thu Sep 17 06:31:59 2009	(r197266)
+++ stable/8/sys/compat/linux/linux_ioctl.c	Thu Sep 17 11:03:37 2009	(r197267)
@@ -2152,6 +2152,7 @@ linux_ifconf(struct thread *td, struct i
 	/* handle the 'request buffer size' case */
 	if (ifc.ifc_buf == PTROUT(NULL)) {
 		ifc.ifc_len = 0;
+		IFNET_RLOCK();
 		TAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 			TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 				struct sockaddr *sa = ifa->ifa_addr;
@@ -2159,6 +2160,7 @@ linux_ifconf(struct thread *td, struct i
 					ifc.ifc_len += sizeof(ifr);
 			}
 		}
+		IFNET_RUNLOCK();
 		error = copyout(&ifc, uifc, sizeof(ifc));
 		CURVNET_RESTORE();
 		return (error);