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Coverity CID 762: Protect against NULL dereferencing entry->object.uvm_obj 

like we do a few lines before. Maybe all the tests should be changed
to UVM_ET_ISOBJ(), or the macro should do it internally?
This commit is contained in:
christos 2006-04-13 01:11:08 +00:00
parent 3e31f5d682
commit 7778288678
1 changed files with 3 additions and 3 deletions
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6
sys/uvm/uvm_map.c
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@ -1,4 +1,4 @@
/* $NetBSD: uvm_map.c,v 1.216 2006/03/15 18:09:25 drochner Exp $ */
/* $NetBSD: uvm_map.c,v 1.217 2006/04/13 01:11:08 christos Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@ -71,7 +71,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uvm_map.c,v 1.216 2006/03/15 18:09:25 drochner Exp $");
__KERNEL_RCSID(0, "$NetBSD: uvm_map.c,v 1.217 2006/04/13 01:11:08 christos Exp $");
#include "opt_ddb.h"
#include "opt_uvmhist.h"
@ -681,7 +681,7 @@ uvm_map_clip_start(struct vm_map *map, struct vm_map_entry *entry,
/* ... unlikely to happen, but play it safe */
uvm_map_reference(new_entry->object.sub_map);
} else {
if (UVM_ET_ISOBJ(entry) &&
if (UVM_ET_ISOBJ(entry) && entry->object.uvm_obj &&
entry->object.uvm_obj->pgops &&
entry->object.uvm_obj->pgops->pgo_reference)
entry->object.uvm_obj->pgops->pgo_reference(