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Assert that the new entry is inserted into the right location in the

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map entries list, and that it does not overlap with the previous and
next entries.

Reviewed by:	alc
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2014-06-20 07:01:53 +00:00
parent 2a87457c75
commit 5831f5fc52
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=267664
1 changed files with 9 additions and 0 deletions
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9
sys/vm/vm_map.c
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@ -940,6 +940,15 @@ vm_map_entry_link(vm_map_t map,
"vm_map_entry_link: map %p, nentries %d, entry %p, after %p", map,
map->nentries, entry, after_where);
VM_MAP_ASSERT_LOCKED(map);
KASSERT(after_where == &map->header ||
after_where->end <= entry->start,
("vm_map_entry_link: prev end %jx new start %jx overlap",
(uintmax_t)after_where->end, (uintmax_t)entry->start));
KASSERT(after_where->next == &map->header ||
entry->end <= after_where->next->start,
("vm_map_entry_link: new end %jx next start %jx overlap",
(uintmax_t)entry->end, (uintmax_t)after_where->next->start));
map->nentries++;
entry->prev = after_where;
entry->next = after_where->next;