Bug 751490 – media-libs/portaudio-19.06.00-r3: program utilizing portaudio crashes with assert on alsa buffer underrun (PATCH)

• Product: Gentoo Linux
• Status: RESOLVED UPSTREAM

[Description franklyfrank 2020-10-27 19:27:22 UTC]

I'm using an out of tree ebuild for the MAME emulator and using portaudio for its sound output results in random program crashes with the following message printed to stdout:

sdlmame: /tmp/portage/media-libs/portaudio-19.06.00-r3/work/portaudio/src/hostapi/alsa/pa_linux_alsa.c:3641: PaAlsaStreamComponent_BeginPolling: Assertion `ret == self->nfds' failed.

Looking around there's an open bug report on the upstream github [1] and a ready to use patch currently used by Debian [2].
I've tested the patch and it applies cleanly and seems to fix my issue.

[1] https://github.com/PortAudio/portaudio/issues/268
[2] https://sources.debian.org/patches/portaudio19/19.6.0-1.1/944509-crash.patch/

[Comment 1 Sam James 2020-10-27 21:01:48 UTC]

I'm not sure who personslly looks after this (if sound@ has someone interested or not), but I can apply the patch if we give someone a chance first to review and give thoughts here.

Ping me in ~week if nobody else gets back to you? I'll CC Polynomial-C just because he has added a patch in the past and sometimes looks after sound pkgs, but he might not be the right guy here.

(I just want to avoid patching something I don't use, if someone has input.)

[Comment 2 franklyfrank 2020-12-19 05:28:51 UTC]

Sorry for replying so late. The good news is, that it was fixed in upstream by now.
https://github.com/PortAudio/portaudio/pull/344

I was going to ask to just close this report without the Debian patch since I seem to be the only Gentoo user ever complaining about it and there are alternatives to portaudio.

Is it okay to just set it RESOLVED UPSTREAM?

[Comment 3 Sam James 2020-12-19 11:26:14 UTC]

If it’s fixed upstream, we can include the patch in Gentoo too if a release is far off.