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8275426: PretouchTask num_chunks calculation can overflow

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Reviewed-by: ayang, tschatzl
This commit is contained in:
Kim Barrett 2021-10-21 13:28:25 +00:00
parent cd07b3cab0
commit 60cb27dcda
1 changed files with 1 additions and 1 deletions
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2
src/hotspot/share/gc/shared/pretouchTask.cpp
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@ -81,7 +81,7 @@ void PretouchTask::pretouch(const char* task_name, char* start_address, char* en
}
if (pretouch_workers != NULL) {
size_t num_chunks = (total_bytes + chunk_size - 1) / chunk_size;
size_t num_chunks = ((total_bytes - 1) / chunk_size) + 1;
uint num_workers = (uint)MIN2(num_chunks, (size_t)pretouch_workers->max_workers());
log_debug(gc, heap)("Running %s with %u workers for " SIZE_FORMAT " work units pre-touching " SIZE_FORMAT "B.",