After more testing, it appears that it only crashes while I have docker container running.

Your system information

Steam client version (build number or date): April 9, 2021 at 23:17:40
Distribution (e.g. Ubuntu): pop-os 20.10 64-bit
Opted into Steam client beta?: [Yes/No] Yes
Have you checked for system updates?: [Yes/No] Yes

Please describe your issue in as much detail as possible:

I found this thread while searching for my (random) steam crashes on Linux.
Same factor here: Docker

Playing Factorio yesterday on other PC (same os), and no crashes at all (and no docker installed)
Today again on (work-)laptop and constantly random crashes. After stopping all running dockers (which are not really doing much, although one container is just constantly restarting) I've not yet experienced any crashes yet.

Last part of the log (running steam from prompt:

(steam:59197): libnm-glib-WARNING **: 15:04:53.429: Error in get_property: No such interface “org.freedesktop.DBus.Properties” on object at path /org/freedesktop/NetworkManager/Devices/439

(steam:59197): libnm-glib-WARNING **: 15:04:53.429: Error in get_property: No such interface “org.freedesktop.DBus.Properties” on object at path /org/freedesktop/NetworkManager/Devices/439

1088.432 Info AppManagerStates.cpp:1941: Saving finished

(steam:59197): libnm-glib-WARNING **: 15:04:56.610: async_got_type: could not read properties for /org/freedesktop/NetworkManager/Devices/441: No such interface “org.freedesktop.DBus.Properties” on object at path /org/freedesktop/NetworkManager/Devices/441
assert_20210411144313_1.dmp[68401]: Uploading dump (out-of-process)
/tmp/dumps/assert_20210411144313_1.dmp
/home/marco/.local/share/Steam/steam.sh: line 771: 59197 Segmentation fault      (core dumped) $STEAM_DEBUGGER "$STEAMROOT/$STEAMEXEPATH" "$@"
 marco@balrog  ~  assert_20210411144313_1.dmp[68401]: Finished uploading minidump (out-of-process): success = yes
assert_20210411144313_1.dmp[68401]: response: CrashID=bp-e74bbf2f-2b32-44da-93e3-fc3602210411
assert_20210411144313_1.dmp[68401]: file ''/tmp/dumps/assert_20210411144313_1.dmp'', upload yes: ''CrashID=bp-e74bbf2f-2b32-44da-93e3-fc3602210411''
1117.010 Info AppManager.cpp:306: Saving to _autosave3 (blocking).
CCrossProcessPipe::BWrite wrote too few bytes: 32 (Broken pipe).  Continuing.
src/common/pipes.cpp (837) : fatal stalled cross-thread pipe (pipe is disconnected).
src/common/pipes.cpp (837) : fatal stalled cross-thread pipe (pipe is disconnected).
src/common/pipes.cpp (837) : Fatal assert; application exiting
src/common/pipes.cpp (837) : Fatal assert; application exiting
ERROR: ld.so: object '/home/marco/.local/share/Steam/ubuntu12_64/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS64): ignored.
crash_20210411150523_2.dmp[68465]: Uploading dump (out-of-process)
/tmp/dumps/crash_20210411150523_2.dmp
_ExitOnFatalAssert
crash_20210411150523_2.dmp[68465]: Finished uploading minidump (out-of-process): success = yes
crash_20210411150523_2.dmp[68465]: response: Discarded=1
crash_20210411150523_2.dmp[68465]: file ''/tmp/dumps/crash_20210411150523_2.dmp'', upload yes: ''Discarded=1''
pid 68465 != 68464, skipping destruction (fork without exec?)

Steps for reproducing this issue:

1. Have at least one running container
2. Open Steam.
3. Play a game (in my case Factorio)
4. Wait for crash to happen

Your system information

• Steam client version (build number or date): Apr 12 2021
• Distribution (e.g. Ubuntu): "Arch Linux" (64 bit), Kernel Version: 5.11.13-zen1-1-zen
• Opted into Steam client beta?: [Yes/No] No
• Have you checked for system updates?: [Yes/No] Yes

Please describe your issue in as much detail as possible:

I've experienced this crash for almost a month. It's very random and not reproducible. My xsession-error.log is referencing NMIP6Config before the crash, and libnm-glib.so.4 in the stack trace. All time stamps match up with the crash. Similar to previous posts here.

I tried disabling ipv6 thinking it might be related to that, which stopped the crashing (didn't have a crash in weeks). I enabled ipv6 on the weekend and noticed the same crash again today. Happens in Native and Steam runtime.

I have NO docker's installed. But the crashes are infrequent and sometimes days apart when it is enabled regardless if a game is running or not.

(steam:1706): GLib-GObject-WARNING **: 22:41:54.093: g_object_notify: object class 'NMIP6Config' has no property named '\x80v\xe9\xe9'
crash_20210413191319_1.dmp[9073]: Uploading dump (out-of-process)
/tmp/dumps/crash_20210413191319_1.dmp
No minidump written, nothing to upload.
crash_20210413191319_1.dmp[9073]: Finished uploading minidump (out-of-process): success = yes
crash_20210413191319_1.dmp[9073]: response: CrashID=bp-2179f5c6-43da-4ed0-b9a2-e67c42210413
crash_20210413191319_1.dmp[9073]: file ''/tmp/dumps/crash_20210413191319_1.dmp'', upload yes: ''CrashID=bp-2179f5c6-43da-4ed0-b9a2-e67c42210413''
/home/atlantida/.local/share/Steam/steam.sh: line 771:  1706 Segmentation fault      (core dumped) $STEAM_DEBUGGER "$STEAMROOT/$STEAMEXEPATH" "$@"

Apr 13 22:44:55 arch systemd-coredump[9079]: Process 1706 (steam) of user 1000 dumped core.
                                             
Stack trace of thread 1706:
#0  0x00000000f51efc82 g_slist_reverse (libglib-2.0.so.0 + 0x6ac82)
#1  0x00000000eea271ac n/a (libnm-glib.so.4 + 0x211ac)
#2  0x00000000f51d4695 g_main_context_dispatch (libglib-2.0.so.0 + 0x4f695)
#3  0x00000000f52296e2 n/a (libglib-2.0.so.0 + 0xa46e2)
#4  0x00000000f51d1ca6 g_main_context_iteration (libglib-2.0.so.0 + 0x4cca6)
#5  0x00000000ef5e93ec n/a (/home/atlantida/.local/share/Steam/ubuntu12_32/vgui2_s.so + 0x563ec)

On a side note, x86_64-linux-gn core dumps when I invoke "Steam - System information". This is reproducible.

Apr 13 23:49:30 arch systemd-coredump[12087]: Process 12085 (x86_64-linux-gn) of user 1000 dumped core.
                                              
Stack trace of thread 12085:
#0  0x00007f7c79849ef5 raise (libc.so.6 + 0x3cef5)
#1  0x00007f7c79833862 abort (libc.so.6 + 0x26862)
#2  0x00007f7c79833747 __assert_fail_base.cold (libc.so.6 + 0x26747)
#3  0x00007f7c79842646 __assert_fail (libc.so.6 + 0x35646)
#4  0x00007f7c79b64fdb n/a (nvidia_drv_video.so + 0xbfdb)
#5  0x00007f7c79b2db4a vaDestroySurfaces (libva.so.2 + 0xab4a)
#6  0x00000000004013c0 n/a (/home/atlantida/.local/share/Steam/ubuntu12_32/steam-runtime/usr/libexec/steam-runtime-tools-0/x86_64-linux-gnu-check-va-api + 0x13c0)

Steam - System Information gist

(steam:364398): libnm-glib-WARNING **: async_got_type: could not read properties for /org/freedesktop/NetworkManager/Devices/4831: No such interface “org.freedesktop.DBus.Properties” on object at path /org/freedesktop/NetworkManager/Devices/4831
assert_20210414131608_1.dmp[375191]: Uploading dump (out-of-process)
/tmp/dumps/assert_20210414131608_1.dmp
/home/<user>/.steam/debian-installation/steam.sh: line 771: 364398 Segmentation fault      (core dumped) $STEAM_DEBUGGER "$STEAMROOT/$STEAMEXEPATH" "$@"
assert_20210414131608_1.dmp[375191]: Finished uploading minidump (out-of-process): success = yes
assert_20210414131608_1.dmp[375191]: response: CrashID=bp-2ba89091-eacb-4ec9-ae19-de2092210414
assert_20210414131608_1.dmp[375191]: file ''/tmp/dumps/assert_20210414131608_1.dmp'', upload yes: ''CrashID=bp-2ba89091-eacb-4ec9-ae19-de2092210414''

I'm having a similar issue since a steam update the other day. Looks like Docker is messing with the network configuration and its triggering a segmentation fault. Running our BDD tests creates a docker network and messes with network configuration and it seems to be knocking steam out when it does. Though this only started on Monday.

Does your client also crashes without games launched ?

Does your client also crashes without games launched ?

I'll start the steam client today while using my dockers (with networking) to test this out.

Does your client also crashes without games launched ?

I'll start the steam client today while using my dockers (with networking) to test this out.

Okay, that was fast.

assert_20210415102428_1.dmp[231325]: Uploading dump (out-of-process)
/tmp/dumps/assert_20210415102428_1.dmp
/home/marco/.local/share/Steam/steam.sh: line 771: 92728 Segmentation fault      (core dumped) $STEAM_DEBUGGER "$STEAMROOT/$STEAMEXEPATH" "$@"
 marco@balrog  ~  assert_20210415102428_1.dmp[231325]: Finished uploading minidump (out-of-process): success = yes
assert_20210415102428_1.dmp[231325]: response: CrashID=bp-f3042b94-6782-4a80-8ef6-742952210415
assert_20210415102428_1.dmp[231325]: file ''/tmp/dumps/assert_20210415102428_1.dmp'', upload yes: ''CrashID=bp-f3042b94-6782-4a80-8ef6-742952210415''

So, you will not need to play a game. Running dockers (with networking) makes the steam client crash sooner or later.

Thank you so much, this is maybe the problem I was encountering - and old docker process was running automatically at startup. I will try to reproduce this segfault without the docker process running but I doubt it will occur again :)
Ubuntu 20.04.2 @ 5.7.0-71 kernel and Docker version 19.03.0, build aeac949

EDIT : well not so sure, I had two other crashes and no docker process was running.

An initial trace I saved:

/tmp/dumps/assert_20210414162647_1.dmp
/home/pak/.local/share/Steam/steam.sh : ligne 771 : 104311 Erreur de segmentation  (core dumped) $STEAM_DEBUGGER "$STEAMROOT/$STEAMEXEPATH" "$@"
assert_20210414162647_1.dmp[105211]: Finished uploading minidump (out-of-process): success = yes
assert_20210414162647_1.dmp[105211]: response: CrashID=bp-ab03cc18-98a4-4fb3-91e7-afa2a2210414
assert_20210414162647_1.dmp[105211]: file ''/tmp/dumps/assert_20210414162647_1.dmp'', upload yes: ''CrashID=bp-ab03cc18-98a4-4fb3-91e7-afa2a2210414''

Hello, I'd like to contribute to this thread by confirming I have also been experiencing the issues described above:

• OS: Linux reaper 5.11.14-arch1-1 #1 SMP PREEMPT Wed, 14 Apr 2021 12:06:34 +0000 x86_64 GNU/Linux
• I am also running docker
  Here are the related dumps as I see them

│Apr 18 17:35:23 reaper systemd-coredump[1048221]: Process 1038244 (steam) of user 1000 dumped core.                                                                                     │
│                                                                                                                                                                                        │
│                                                  Stack trace of thread 1038244:                                                                                                        │
│                                                  #0  0x00000000f79ccfea __strlen_sse2_bsf (libc.so.6 + 0x91fea)                                                                        │
│                                                  #1  0x00000000d6fa4213 n/a (/home/gideon/.local/share/Steam/ubuntu12_32/steamclient.so + 0x664213)                                    │
│                                                  #2  0x00000000ec4f955e g_cclosure_marshal_VOID__OBJECTv (libgobject-2.0.so.0 + 0xd55e)                                                │
│                                                  #3  0x00000000ec51849d g_signal_emit_valist (libgobject-2.0.so.0 + 0x2c49d)                                                           │
│                                                  #4  0x00000000ec51872f g_signal_emit_by_name (libgobject-2.0.so.0 + 0x2c72f)                                                          │
│                                                  #5  0x00000000e6c13056 n/a (n/a + 0x0)                               

and in the console I launched Steam from

crash_20210418111207_1.dmp[11291]: Uploading dump (out-of-process)
/tmp/dumps/crash_20210418111207_1.dmp
crash_20210418111207_1.dmp[11291]: Finished uploading minidump (out-of-process): success = yes
crash_20210418111207_1.dmp[11291]: response: CrashID=bp-d0b488a7-748e-4746-87f2-5f1c12210418
crash_20210418111207_1.dmp[11291]: file ''/tmp/dumps/crash_20210418111207_1.dmp'', upload yes: ''CrashID=bp-d0b488a7-748e-4746-87f2-5f1c12210418''
/home/gideon/.local/share/Steam/steam.sh: line 771:  5370 Segmentation fault      (core dumped) $STEAM_DEBUGGER "$STEAMROOT/$STEAMEXEPATH" "$@"

These crashes are happening 0-30 minutes after launching Steam. During a game, the game will continue for a few seconds and then freeze. But earlier the client crashed when I was simply validating local game files.

I've run into the same problem:

(steam:151): GLib-GObject-WARNING **: 01:12:01.319: g_object_notify: object class 'NMIP6Config' has no property named 'H]\xa8X'

I'm running Steam in Flatpak:

• Flatpak: 1.10.2
• Steam: 1.0.0.70
• Freedesktop Platform: 20.08.8
• Freedesktop SDK: 18.08.39

Steam client version Apr 12 20121, at 18:51:43.

I can confirm that I haven't seen any crashes since disabling a "broken" docker container that was constantly restarting itself after erroring out.

I also confirmed having a docker container on constant restart loop would eventually crash steam on my machine. Steam doesn't crash again even when running overnight after removing the offending docker container.

Steam also crashes by simply having the docker service running in the background here.
I had no running containers and got the same assertions and crashes as described above.
Stopping the docker.service solved a lot of the crashes.

Manjaro Ornara 21.0.3
Kernel >= 5.4 (tested all available Kernels above 5.4)
Steam runtime and Steam native with recent beta

Just to clarify I don't have any broken docker images. What we do have is something that simulates a serverless workload so often dynamically creates and destroys containers on the fly. None of them are broken though.

Also having this issue. I have multiple containers running (mongo, nginx, redis, rabbitmq). This causes steam to crash eventually, running games or not.