[auich] driver freezes VirtualBox after uptime of 27 hours

[eanyx]

This bug is related to #6498 (closed).

On a recent hybrid gcc 2 nightly (hrev47687) and virtualbox v 4.3.14 hrev95030, haiku at full load (100 % cpu) crash after 27 hours.

Haiku need more uptime (for exemple for 3D raytracing/rendering).

See attachements.

[eanyx]

uptime script

[eanyx]

uptime results

[eanyx]

syslog

[eanyx]

With recent version of official Haiku hrev49548 hybrid gcc 2, still have the same uptime problem.

My physical host is a RHEL 6.5 (Redhat Enterprise Linux) with virtualbox 4.3.14 v95030.

The crash of the OS is at the same time (+/- 1 day, 3 hours and 2 minutes).

There seems to have some buffer overflow, or other hard coded values.

[eanyx]

uptime_21_and_22_august_2015.out

[eanyx]

syslog.old_before_crash_22_august_2015

[mmlr]

You mention a crash, can you please attach the corresponding output (screenshot of KDL or consoled). Or is there no crash but it just freezes like in ticket #6498?

If it just freezes, please try to get into KDL (using VBoxManage controlvm <VMName> keyboardputscancode 38 54 20 from the host) and check what is running (using the running command) and then get a backtrace (with bt <thread>) of all the running threads.

[mmlr]

Interestingly I just stumbled upon that number (27:03:11 actually) in the context of audio, where that's the time it takes to wrap a 32 bit sample count at 44.1 kHz. The syslog you attached as well as ticket #6498 point to virtual AC97 audio being present and therefore the auich driver being in use. It could therefore be a driver issue, or the issue could be somewhere else in the audio path (but I guess others would've noticed). To check if it's within the audio path you could disable emulation of the audio device. If it then doesn't freeze you could check if the auich driver is to blame by changing the emulated audio hardware to something else and seeing if it then also doesn't freeze.

[eanyx]

After disabling the AC97 audio driver in Virtualbox I didn't met this hang. I also try with audio driver Intel HD audio and didn't met the hang too.

So I think there is a bug in AC97 driver.

[eanyx]

haiku on virtualbox without sound driver no freeze

[eanyx]

haiku on virtualbox with intel hd driver no freeze

[korli]

The problem is to confirm a bug in Haiku or in Virtualbox. Please check with virtual AC97 audio and another OS that Virtualbox doesn't freeze.

[eanyx]

On Ubuntu Wily 15.10 with the same virtualbox configuration I didn't see the freeze (more than 3 days uptime).

So it seems the bug came from the haiku AC97 driver.

[eanyx]

uptime ubuntu 15.10 wily without freeze

[diver]

Might be related to ​https://www.virtualbox.org/ticket/13752

[diver]

After I switched to HDA driver (which doesn't produce any sound in VBox) in VM settings VirtualBox stopped freezing for me.

[eanyx]

When host is running properly, I can enter KDL with VBoxManage controlvm <VMName> keyboardputscancode 38 54 20, and I have the backtrace to serial output.

But when system freezes, the screen goes black, and I cannot enter KDL. Keyboard and mouse seem to not answer at all. And no output in serial file if entered in KDL.

So blocked, need to study auich driver source code to see what is the culprit.

[korli]

I tried VirtualBox with ICH AC97 audio device: it seems Haiku picks 48kHz as sample rate, while VirtualBox outputs 44kHz to PulseAudio (the host audio system). The Haiku auich driver uses a int64 as frames count, I don't see anything obvious related here.

Some things to try

• force 44100Hz as samplerate in auich.settings.
• check with a recent VirtualBox version.

[eanyx]

On CentOS 7.3 (kernel 3.10.0-514.6.1.el7.x86_64) with virtualbox 5.1.12 hrev112440 with haiku compiled from source (hrev 51018 hybrid gcc2 x86), haiku doesn't hang after 27 hours of uptime. See logs attached.

You can close this case

[pulkomandy]

Thanks for reporting.