SIGBUS in gx_engine::NeuralAmp::compute

[edwloef]

This occurs when changing the buffer size at samplerates other than 48000, with the NAM plugin loaded. Can't tell whether this is another pipewire-jack bug though, since the stacktrace isn't very helpful: bt.txt

[edwloef]

gdb claims this to be the line it crashes at, which doesn't make much sense to me either:

guitarix/trunk/src/gx_head/engine/gx_internal_plugins.cpp

Line 1923 in be6310d

}

[edwloef]

In the git version, it crashes somewhere in here:

guitarix/trunk/src/gx_head/engine/gx_internal_plugins.cpp

Lines 1925 to 1928 in 9013250

	void NeuralAmp::compute_static(int count, float *input0, float *output0, PluginDef *p)
	{
	static_cast<NeuralAmp*>(p)->compute(count, input0, output0);
	}

maybe the difference is just down to debug symbols

[brummer10]

Does that mean that it didn't crash under pipewire when you change the buffersize any more, without a neural model is running?
Which version of pipewire do you use?

[edwloef]

Yes, the old crash no longer occurs since pipewire-jack 1.2.6, this commit fixed it: https://gitlab.freedesktop.org/pipewire/pipewire/-/commit/27961630a669f0a58ccbfe044cd0c3ebecbe77c0

[brummer10]

Ah, that's nice to hear.
Well, I just did some quick tests under jack and can't reproduce the crash under jack.
As I'm still on pipewire 1.2.0 I can't test on pipewire, but, as it works flawless under jack I suspect pipewire to be the culprit.