logd — Watchdog: stuck process
The logd logging service did not respond to the watchdog in time (≈180 s) and iOS restarted. iFixit classifies this case among check-in failures of a software component, very common on early iOS 16 releases. In an iFixit thread (iPhone SE 2020), only a clean restore WITHOUT putting the full backup back stopped the restarts.
iPhone
Software (iOS / restored data) — no part identified
Medium confidenceVerified sourceWatchdog: stuck process
First check
Back up, update iOS via Recovery Mode; if it persists, restore as a new device (without restoring the backup) and observe for 24 h before any hardware work.