[src/prg-localcount2]: src/sys/kern Import fix from HEAD for NULL deref

[pgoyette <pgoyette%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/dca8bfb383cc
branches:  prg-localcount2
changeset: 823544:dca8bfb383cc
user:      pgoyette <pgoyette%NetBSD.org@localhost>
date:      Wed May 17 01:42:17 2017 +0000

description:
Import fix from HEAD for NULL deref

diffstat:

 sys/kern/kern_event.c |  9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diffs (31 lines):

diff -r a10b045ee614 -r dca8bfb383cc sys/kern/kern_event.c
--- a/sys/kern/kern_event.c     Sun May 14 13:02:35 2017 +0000
+++ b/sys/kern/kern_event.c     Wed May 17 01:42:17 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kern_event.c,v 1.88.8.2 2017/05/11 02:58:40 pgoyette Exp $     */
+/*     $NetBSD: kern_event.c,v 1.88.8.3 2017/05/17 01:42:17 pgoyette Exp $     */
 
 /*-
  * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@@ -58,7 +58,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_event.c,v 1.88.8.2 2017/05/11 02:58:40 pgoyette Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_event.c,v 1.88.8.3 2017/05/17 01:42:17 pgoyette Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -1020,9 +1020,10 @@
                        KERNEL_UNLOCK_ONE(NULL);        /* XXXSMP */
                        if (error != 0) {
 #ifdef DIAGNOSTIC
+                               
                                printf("%s: event not supported for file type"
-                                   " %d (error %d)\n", __func__,
-                                   ((file_t *)kn->kn_obj)->f_type, error);
+                                   " %d (error %d)\n", __func__, kn->kn_obj ?
+                                   ((file_t *)kn->kn_obj)->f_type : -1, error);
 #endif
                                /* knote_detach() drops fdp->fd_lock */
                                knote_detach(kn, fdp, false);