PulseAudio-related segmentation fault from PowerShell beeps

[kevinoid]

I previously reported this issue as ​https://bugs.debian.org/889791 and was requested to report it here.

On a Debian buster/sid amd64 host, using virtualbox 5.2.8-dfsg-1 packages, with kernel 4.15.7, when running a Windows 7 guest using the PulseAudio host audio driver and "ICH AC97" audio controller, running PowerShell and causing repeated beeping (e.g. by pressing ^G repeatedly and <Enter> occasionally) will cause VirtualBox to crash with SIGSEGV.

I was able to reproduce the issue using the Microsoft-provided ​"IE8 on Win7 (x86)" VM image after installing the ​Realtek AC'97 Audio Codecs but was unable to reproduce it from terminal beeps using a Linux image. I was also unable to reproduce the issue with the "Intel HD Audio" audio controller using 5.2.8-dfsg-1, although it was previously reproducible with 5.2.6-dfsg-3+b1.

I will attach VBox.log and a backtrace momentarily.

Thanks, Kevin

Note: This sounds similar to https://www.virtualbox.org/ticket/15725 which was closed for lack of follow-up.

[kevinoid]

gdb backtrace of VirtualBox core dump after SIGSEGV

[kevinoid]

VBox.log of machine during crash

[pentagonik]

Thanks for the report; I'll have a peek at the data provided.