I'm on a laptop running Arch Linux. As of a series of updates applied this morning, I've had some issues with GNOME crashing, and being reloaded, forcing me to log in again -- and while my tmux sessions were still alive and well, all GUI applications had to be restarted after logging back in.

Checking dmesg consistently shows very similar errors coinciding with the crash times, which seem to occur at irregular intervals:

[ 7070.694904] gnome-shell[789]: segfault at 8 ip 00007f679a68fdec sp 00007fff1678a178 error 4 in libc-2.24.so[7f679a60c000+195000]
[10834.916178] perf: interrupt took too long (2527 > 2500), lowering kernel.perf_event_max_sample_rate to 78900
[17712.033332] perf: interrupt took too long (3162 > 3158), lowering kernel.perf_event_max_sample_rate to 63000
[18478.887765] gnome-shell[7900]: segfault at 8 ip 00007f4e0d19fdec sp 00007ffc94edda78 error 4 in libc-2.24.so[7f4e0d11c000+195000]
[26423.365242] perf: interrupt took too long (3987 > 3952), lowering kernel.perf_event_max_sample_rate to 50100
[32277.027055] gnome-shell[14894]: segfault at 8 ip 00007f56659a4dec sp 00007ffda63e4268 error 4 in libc-2.24.so[7f5665921000+195000]

All this tells me is that it's some issue with my libc, but I've never had to modify that, for as long as I've used Unix-based systems.

If I had to guess, GNOME itself is causing a segfault, but I haven't had any updates to GNOME or any directly related software in a while.

How can I diagnose this further? Is it possible to tell roughly what the issue is based on this information from dmesg?

What would a possible fix be?

  • I can confirm this behavior on my system too. I am running Fedora 25 and sometimes when I switch windows using Alt+Tab, the same thing happens to me too. I actually found your question here while searching for a known bug. Sorry that I can't help but did you already solve the issue? – comfreak Mar 10 '17 at 22:43

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