svn commit: r350006 - stable/12/sys/dev/netmap

[Vincenzo Maffione]

Author: vmaffione
Date: Mon Jul 15 20:12:54 2019
New Revision: 350006
URL: https://svnweb.freebsd.org/changeset/base/350006

Log:
  MFC r349966
  
  netmap: fix bug introduced by r349752
  
  r349752 introduced a NULL pointer reference bug
  in the emulated netmap code.
  
  Reported by:    lwhsu

Modified:
  stable/12/sys/dev/netmap/netmap_generic.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/dev/netmap/netmap_generic.c
==============================================================================
--- stable/12/sys/dev/netmap/netmap_generic.c	Mon Jul 15 19:18:25 2019	(r350005)
+++ stable/12/sys/dev/netmap/netmap_generic.c	Mon Jul 15 20:12:54 2019	(r350006)
@@ -1126,7 +1126,8 @@ generic_netmap_attach(struct ifnet *ifp)
 
 	nm_os_generic_set_features(gna);
 
-	nm_prinf("Emulated adapter for %s created (prev was %s)", na->name, gna->prev->name);
+	nm_prinf("Emulated adapter for %s created (prev was %s)", na->name,
+	    gna->prev ? gna->prev->name : "NULL");
 
 	return retval;
 }