Bug#1107868: mumble: segfault on first start

[Chris Knadle]

I've forwarded the additional bug information upstream to see if 
additional fixes can be done for this bug.

Thanks

Chris Knadle
Chris.Knadle at coredump.us

On 7/11/25 12:08, Thorsten Glaser wrote:
> Package: mumble
> Version: 1.5.735-5
> Followup-For: Bug #1107868
> X-Debbugs-Cc: tg at mirbsd.de
>
> A backtrace and hopefully more useful information follows.
>
> I’ve got no idea how to backtrace through the clone(2) syscall,
> so no idea what to try to cast the “arg” argument to, but there
> is something suspect:
>
> The current (crashing) thread is named AudioOutput, while the
> main() thread seems to be currently executing the destructor of
> a class called AudioOutput.
>
> Might be that if it tries multiple audio outputs it creates and
> destroys multiple AudioOutput objects, and that these objects
> spawn threads, but that they reuse the single “AudioOutput” thread
> or some of its variables?
>
>
> (gdb) r
> Starting program: /usr/bin/mumble
> Downloading 542.84 K separate debug info for /lib64/ld-linux-x86-64.so.2
> Downloading 47.69 K separate debug info for system-supplied DSO at 0x7ffff7fc5000
> Downloading 1.62 M separate debug info for /lib/x86_64-linux-gnu/libPocoXML.so.100
> Downloading 1.31 M separate debug info for /lib/x86_64-linux-gnu/libPocoZip.so.100
> Downloading 5.78 M separate debug info for /lib/x86_64-linux-gnu/libPocoFoundation.so.100
> Downloading 593.04 K separate debug info for /lib/x86_64-linux-gnu/libsndfile.so.1
> Downloading 12.19 M separate debug info for /lib/x86_64-linux-gnu/libprotobuf.so.32
> Downloading 5.21 M separate debug info for /lib/x86_64-linux-gnu/libcrypto.so.3
> Downloading 1.41 M separate debug info for /lib/x86_64-linux-gnu/libssl.so.3
> Downloading 14.34 M separate debug info for /lib/x86_64-linux-gnu/libQt5Network.so.5
> Downloading 295.37 K separate debug info for /home/tg/.cache/debuginfod_client/3c8f80ff1a4dfed6d343b44117a09bbf712aac2b/debuginfo
> Downloading 988.20 K separate debug info for /lib/x86_64-linux-gnu/libQt5Xml.so.5
> Downloading 1.83 M separate debug info for /lib/x86_64-linux-gnu/libQt5Sql.so.5
> Downloading 2.67 M separate debug info for /lib/x86_64-linux-gnu/libQt5Svg.so.5
> Downloading 122.07 K separate debug info for /home/tg/.cache/debuginfod_client/62639e72eab35785019a4b6ae2879528fd5822de/debuginfo
> Downloading 36.69 M separate debug info for /lib/x86_64-linux-gnu/libQt5Widgets.so.5
> Downloading 40.33 M separate debug info for /lib/x86_64-linux-gnu/libQt5Gui.so.5
> Downloading 5.94 M separate debug info for /home/tg/.cache/debuginfod_client/e2f93f74d4662093f1c8592146f29cc221dea23c/debuginfo
[trimming backtrace output to not duplicate it in the report]