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8008071: Crashed in promote_malloc_records() with Kitchensink after 19 days

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Added NULL pointer check for arena size record

Reviewed-by: sspitsyn, dholmes
This commit is contained in:
Zhengyu Gu 2013-02-21 07:50:48 -05:00
parent 9ff6dfb849
commit 7b43f3402c
1 changed files with 2 additions and 1 deletions
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3
hotspot/src/share/vm/services/memSnapshot.cpp
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@ -528,7 +528,8 @@ bool MemSnapshot::promote_malloc_records(MemPointerArrayIterator* itr) {
// an arena record can be followed by a size record, we need to remove both
if (matched_rec->is_arena_record()) {
MemPointerRecord* next = (MemPointerRecord*)malloc_snapshot_itr.peek_next();
if (next->is_arena_memory_record() && next->is_memory_record_of_arena(matched_rec)) {
if (next != NULL && next->is_arena_memory_record() &&
next->is_memory_record_of_arena(matched_rec)) {
malloc_snapshot_itr.remove();
}
}