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From: "Bjoern A. Zeeb" <bz@FreeBSD.org>
Date: Sat, 27 Mar 2010 17:33:19 +0000 (UTC)
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Subject: svn commit: r205753 - stable/8/sys/net
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Author: bz
Date: Sat Mar 27 17:33:19 2010
New Revision: 205753
URL: http://svn.freebsd.org/changeset/base/205753

Log:
  MFC r204142:
  
    Enhance a panic string to contain more useful debugging information.

Modified:
  stable/8/sys/net/if.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  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/net/if.c
==============================================================================
--- stable/8/sys/net/if.c	Sat Mar 27 17:31:54 2010	(r205752)
+++ stable/8/sys/net/if.c	Sat Mar 27 17:33:19 2010	(r205753)
@@ -842,7 +842,8 @@ if_detach_internal(struct ifnet *ifp, in
 	IFNET_WUNLOCK();
 	if (!found) {
 		if (vmove)
-			panic("interface not in it's own ifnet list");
+			panic("%s: ifp=%p not on the ifnet tailq %p",
+			    __func__, ifp, &V_ifnet);
 		else
 			return; /* XXX this should panic as well? */
 	}