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[k2] add addresses bound check in backtrace #1649

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Merged
astrophysik merged 1 commit into from
Jul 6, 2026
Merged

[k2] add addresses bound check in backtrace #1649

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8 changes: 5 additions & 3 deletions runtime-light/stdlib/diagnostics/backtrace.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -50,9 +50,11 @@ size_t async_backtrace(std::span<void*> addresses) noexcept {
auto* const start_sync_frame{reinterpret_cast<kphp::coro::stack_frame*>(STACK_FRAME_ADDRESS)};
auto* const stop_sync_frame{async_stack_root.stop_sync_stack_frame};

const size_t num_sync_frames{sync_frames(addresses, start_sync_frame, stop_sync_frame)};
const size_t num_async_frames{async_frames(addresses.subspan(num_sync_frames), async_stack_root.top_async_stack_frame)};
return num_sync_frames + num_async_frames;
size_t frames_count{sync_frames(addresses, start_sync_frame, stop_sync_frame)};
if (frames_count < addresses.size()) {
frames_count += async_frames(addresses.subspan(frames_count), async_stack_root.top_async_stack_frame);
}
return frames_count;
}
return 0;
}
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