Reply To: Diagnostic query: Unexpected kernel panic on macOS Sequoia 15.1 after waking (1794691713)

The IOPlatformPluginFamily assertion often masks an underlying I/O stall caused by APFS snapshot consolidation racing with the wake path; run tmutil listlocalsnapshots / and purge any stale snapshots with tmutil deletelocalsnapshots before forcing a full volume verification via diskutil verifyVolume / in Recovery Mode. If First Aid reports “invalid sibling link” or “checkpoint mismatch” errors, the snapshot metadata tree is corrupted and requires an APFS container rebuild (diskutil apfs eraseContainer diskX followed by a clean restore) rather than a simple repair. Time Machine’s background backupd helper can hold IORegistry locks during wake if a local snapshot is mounted; disable automatic local snapshots via tmutil disablelocal as a mitigation while validating the NVMe controller’s thermal throttling logs with powermetrics --show-thermal-throttling.