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buffer_cache: avoid overflow in usage tracker

This commit is contained in:
Liam 2024-02-25 22:37:19 -05:00
parent f9bfdb1555
commit 4eecad914a
1 changed files with 6 additions and 0 deletions
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6
src/video_core/buffer_cache/usage_tracker.h
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@ -26,6 +26,9 @@ public:
void Track(u64 offset, u64 size) noexcept {
const size_t page = offset >> PAGE_SHIFT;
const size_t page_end = (offset + size) >> PAGE_SHIFT;
if (page_end < page || page_end >= pages.size()) {
return;
}
TrackPage(page, offset, size);
if (page == page_end) {
return;
@ -41,6 +44,9 @@ public:
[[nodiscard]] bool IsUsed(u64 offset, u64 size) const noexcept {
const size_t page = offset >> PAGE_SHIFT;
const size_t page_end = (offset + size) >> PAGE_SHIFT;
if (page_end < page || page_end >= pages.size()) {
return false;
}
if (IsPageUsed(page, offset, size)) {
return true;
}