Clear image.src on loadImage error to release partial cairo state#2580
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iurisilvio wants to merge 1 commit into
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Clear image.src on loadImage error to release partial cairo state#2580iurisilvio wants to merge 1 commit into
iurisilvio wants to merge 1 commit into
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loadImage's onerror handler rejects the Promise but leaves image.src pointing at the input buffer. When libjpeg/libpng allocated a cairo surface before failing mid-decode, that surface stays attached to the Image until V8 GC — under sustained load on malformed inputs this delays cleanup arbitrarily. Assign Buffer.alloc(0) before reject so clearData() runs synchronously.
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Fixes #2576.
loadImage()inindex.jsrejects the Promise on error but doesn't clearimage.src. The Image keeps a reference to the input buffer (and, depending on the format, any partial cairo surface) until V8 garbage-collects the Image wrapper. Under sustained load on malformed inputs that fail mid-decode, this delays cleanup arbitrarily.The fix assigns
image.src = Buffer.alloc(0)before rejecting, which triggersImage::SetSource()→clearData()synchronously — destroying any partial cairo surface and resetting the buffer reference.One-line change; the full rationale and a standalone repro are in #2576.