Created attachment 1515317 [details]
File: backtrace

Created attachment 1515318 [details]
File: cgroup

Created attachment 1515319 [details]
File: core_backtrace

Created attachment 1515320 [details]
File: cpuinfo

Created attachment 1515321 [details]
File: dso_list

Created attachment 1515322 [details]
File: environ

Created attachment 1515323 [details]
File: limits

Created attachment 1515324 [details]
File: maps

Created attachment 1515325 [details]
File: mountinfo

Created attachment 1515326 [details]
File: open_fds

Created attachment 1515327 [details]
File: proc_pid_status

Created attachment 1515328 [details]
File: var_log_messages

*** Bug 1674193 has been marked as a duplicate of this bug. ***

*** Bug 1680001 has been marked as a duplicate of this bug. ***

*** Bug 1680003 has been marked as a duplicate of this bug. ***

*** Bug 1607764 has been marked as a duplicate of this bug. ***

There's no information apart from the backtrace, but if logind was killed in epoll_wait() then this is almost certainly the watchdog. Either the machine is extremely resource-starved or there's some kernel bug. With logs it might be possible to figure out the exact reason.

*** Bug 1680004 has been marked as a duplicate of this bug. ***

*** Bug 1680005 has been marked as a duplicate of this bug. ***

(In reply to Zbigniew Jędrzejewski-Szmek from comment #17)
> There's no information apart from the backtrace, but if logind was killed in
> epoll_wait() then this is almost certainly the watchdog. Either the machine
> is extremely resource-starved or there's some kernel bug. With logs it might
> be possible to figure out the exact reason.

Produkt-SKU: 4240CTO
Produktname: ThinkPad T520

 - Intel Core i7-2670QM Processor (2.20 GHz, 6MB L3)
 - 15,6 Zoll FHD (1900 x 1080) Anti-Glare-Bildschirm mit LED-Hintergrundbeleuchtung, fähig für mobiles Breitband
 - NVIDIA NVS 4200M Graphics mit Optimus-Technologie, 1 GB DDR3-Speicher
 - 6 GB PC3-10600 DDR3-SDRAM 1.333 MHz SODIMM-Speicher (2 DIMMs)
 - Tastatur, Deutsch
 - Fingerabdruckleser
 - 720p Kamera
 - 128-GB-Solid-State-Laufwerk, SATA
 - Wiederbeschreibbare DVD
 - Express Card Slot & 4 in 1 Card Reader & Smart Card Reader
 - Lithium-Ionen-Akku mit 9 Zellen (2,8 Ah) - Dual-Modus
 - Länderspezifisches Paket Deutschland mit Netzkabel und 135-W-Netzteil
 - Bluetooth 3.0
 - Intel Centrino Ultimate-N 6300 (3x3 AGN)
 - Integriertes mobiles Breitband - Upgrade möglich
 - Sprachenpaket WE (FR/GE/IT/IT/DU/EN)

Produkt-SKU: 0A90204
Produktname: ThinkPad Mini Dock Plus Series 3 (170W) (EU)

Yeah, I was training a GAN while this happened, so guess it's resource starvation.

*** Bug 1691889 has been marked as a duplicate of this bug. ***

Similar problem has been detected:

happened same time as this https://bugzilla.redhat.com/show_bug.cgi?id=1567645

reporter:       libreport-2.10.0
backtrace_rating: 4
cmdline:        /usr/lib/systemd/systemd --user
crash_function: epoll_wait
executable:     /usr/lib/systemd/systemd
journald_cursor: s=f82b3db13754497e9310ee2fd027e3bb;i=2b85;b=50f26a9fd7d644b2abe679f36a10238a;m=486aa9a1;t=58a24e9932b2c;x=8a1dd58786689bef
kernel:         5.0.17-200.fc29.x86_64
package:        systemd-239-12.git8bca462.fc29
reason:         systemd killed by SIGABRT
rootdir:        /
runlevel:       N 5
type:           CCpp
uid:            1000

Similar problem has been detected:

may be related to https://bugzilla.redhat.com/show_bug.cgi?id=1742964

reporter:       libreport-2.10.1
backtrace_rating: 4
cmdline:        /usr/lib/systemd/systemd --user
crash_function: epoll_wait
executable:     /usr/lib/systemd/systemd
journald_cursor: s=a7dd7143bbf24a11a31720a31072c1ce;i=2fab;b=107aa183c55d4d5cb34f675b25a55b34;m=d12dd5dd1;t=590471dbeb011;x=2560334f8cad6fe3
kernel:         5.2.7-100.fc29.x86_64
package:        systemd-239-13.gitf4afb95.fc29
reason:         systemd killed by SIGABRT
rootdir:        /
runlevel:       N 5
type:           CCpp
uid:            1000

*** This bug has been marked as a duplicate of bug 1300212 ***