tinyusb (hathach)FirmwareConfidence: Medium

on ESP32-S3 the dwc2 host stack hung after mount because interrupt-mask regions on two cores overlapped and one restored a 0 mask; pinning tasks to the ISR's core hid it, and the validated hardware fix still does not make the regions exclusive.

Impact Analysis

Persona

Firmware Engineer

Team Size Impact

5x Multiplier

Prototype Delay

3 Days

Est. Annual Cost

$30,000

1 user · 1 month240 min
Rest of team960 min
Rest of year13,200 min

monthly_minutes × 12 × team_multiplier ÷ 60 × $75/hr = $30k/yr

$75/hr assumed rate.

Annual team-minutes decomposed from the reported monthly inputs.

Evidence & Sources

1 Sources

hathach/tinyusb Issue #4325: dwc2 HCD: GINT mask regions are not exclusive across cores and task-side haintmsk |= is unmasked

github.com

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Analyst Notes

From the Grok pain-radar digest, Oct 25-26 2026 (Oct 25 daytime to Oct 26 morning slots). Verified live 2026-10-26: issue/PR read on GitHub; title and state confirmed.