ricardgb opened a new pull request, #3630:
URL: https://github.com/apache/nuttx-apps/pull/3630
## Summary
`CONFIG_NETUTILS_MDNS_STACKSIZE` defaulted to `DEFAULT_TASK_STACKSIZE`,
which resolves to as little as 2KiB on some targets. The bundled mjansson
mDNS responder needs a deeper stack than that — DNS record parsing with
name decompression, plus the send/receive buffers — so on those targets it
overflows its stack and hardfaults at startup, before it can answer a
single query.
This raises the default to 8KiB (the value that reliably runs the
responder) and corrects the help text, which previously claimed a "4KiB"
default that did not match `DEFAULT_TASK_STACKSIZE`.
## Impact
- Fixes a startup hardfault when the mDNS app/daemon is enabled on targets
with a small `DEFAULT_TASK_STACKSIZE`.
- No API change; configurations that already set an explicit stack size are
unaffected.
## Testing
Reproduced and fixed on a Raspberry Pi Pico 2 W (RP2350, NuttX). With the
old default (2KiB on this target) the responder overflowed its stack and
hardfaulted at startup; with the new 8KiB default it runs and answers mDNS
queries normally (verified with `avahi-resolve`/`avahi-browse` from a host).
---
*Disclosure: this change was prepared by an AI agent (Claude Code) at the
direction of the author (@ricardgb), who reviewed it before submission.*
🤖 Generated with [Claude Code](https://claude.com/claude-code)
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