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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Sun, 1 Jan 2012 23:12:56 +0000 (UTC)
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Subject: svn commit: r229231 - stable/8/sys/fs/nullfs
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Author: kib
Date: Sun Jan  1 23:12:56 2012
New Revision: 229231
URL: http://svn.freebsd.org/changeset/base/229231

Log:
  MFC r227696:
  Do not use NULLVPTOLOWERVP() in the null_print(). If diagnostic is compiled
  in, and show vnode is used from ddb on the faulty nullfs vnode, we get
  panic instead of vnode dump.

Modified:
  stable/8/sys/fs/nullfs/null_vnops.c
Directory Properties:
  stable/8/sys/   (props changed)

Modified: stable/8/sys/fs/nullfs/null_vnops.c
==============================================================================
--- stable/8/sys/fs/nullfs/null_vnops.c	Sun Jan  1 23:12:43 2012	(r229230)
+++ stable/8/sys/fs/nullfs/null_vnops.c	Sun Jan  1 23:12:56 2012	(r229231)
@@ -729,7 +729,7 @@ null_print(struct vop_print_args *ap)
 {
 	struct vnode *vp = ap->a_vp;
 
-	printf("\tvp=%p, lowervp=%p\n", vp, NULLVPTOLOWERVP(vp));
+	printf("\tvp=%p, lowervp=%p\n", vp, VTONULL(vp)->null_lowervp);
 	return (0);
 }