iomfb — Display
IOMFB is the display framebuffer driver. On an iPhone 11 Pro (“IOMFB int_handler: failure: sf_overflow”), a user reports that the restarts stopped after replacing the display (and the battery).
iPhone
Display (screen assembly) — then logic board if it persists
Low confidenceVerified sourceDisplay
First check
Test with a known-good display; inspect the display connector.