Hello @Managor, this reads like a Steam client issue, not a Steam Linux Runtime container environment issue, so I've transferred this issue report.
Possible duplicate of #6318.
You've reported this as a SLR crash that brought down Steam with it, but are you sure it isn't a Steam crash that brought down SLR with it?
What crashing processes were recorded in the systemd journal?
Is this crash reproducible?
#0 0xec6771d3 in ?? () from /home/managor/.local/share/Steam/ubuntu12_32/steam-runtime/usr/lib/i386-linux-gnu/libnm.so.0
This looks like a problem with Steam (specifically, the bits of it that talk to NetworkManager for wifi status etc.), rather than a problem with a game that runs under the Steam Linux Runtime.
Please note that ~/.local/share/Steam/ubuntu12_32/steam-runtime is the LD_LIBRARY_PATH Steam Runtime, but is not the Steam Linux Runtime container environment.
Elsewhere, the reporter of this issue asked for a beta branch of SLR with debug information. If it is Steam that is crashing, then a beta branch of SLR would not be useful, because ~/.local/share/Steam/ubuntu12_32/steam-runtime is part of Steam itself, so its only facility for beta branches is via opting in to a beta branch of all of Steam.
Detached debug symbols for ~/.local/share/Steam/ubuntu12_32/steam-runtime are already available: https://github.com/ValveSoftware/steam-runtime/blob/master/doc/debug-symbols.md has full details. If you're able to use those instructions to get a backtrace with libnm.so.0 debug symbols, that would be very useful information.
Possible duplicate of https://github.com/ValveSoftware/steam-for-linux/issues/6318.
I don't think this is a duplicate, but in any case that issue is so confused (mixing up symptoms with root causes) that it's unlikely that it will ever be fully disentangled.
It is sadly not reproducible, but thank you a lot for informing me. Next time I enconter it, I'll get those working. I forgot to save the coredump so now it's lost
Another thing you can do to help to diagnose crashes is to quote the crash dump ID from Steam's output (and the rest of Steam's output around the time of the crash), for example:
crash_20190603191042_1.dmp[22283]: Uploading dump (out-of-process)
/tmp/dumps/crash_20190603191042_1.dmp
crash_20190603191042_1.dmp[22283]: Finished uploading minidump (out-of-process): success = yes
crash_20190603191042_1.dmp[22283]: response: CrashID=bp-abcdef12-1234-abcd-ef1-0123456789ab
which Valve developers should be able to look up. If you ran Steam from a GUI, then its output will often end up in the systemd Journal.
@kisak-valve This report can probably be closed. It's old and hasn't happened again.
Your system information
SteamLinuxRuntime_soldier/VERSIONS.txt?Please describe your issue in as much detail as possible:
A random crash which took down steam.
Backtrace