Process / service names not used to specify (in notifications) which application was killed during out of memory (OOM) events
With GNOME 44.x on an up-to-date Fedora 38 (gnome-settings-daemon version 44.1), as I ran out of RAM due to web browsing, I eventually saw this notification:
This message matches this code
The problem is that it does not tell the user which process it is talking about, so unless I go to the system logs with journalctl filtering by a specific timeframe, I wouldn't even know what app got killed. In this case, it killed Nautilus in the background. That was Nautilus from the system/Fedora packages, so it should have been able to identify it.
It seems that, a few lines above, the code has some provision for handling application names:
if (app) {
/* TRANSLATORS: %s is the application name. */
summary = g_strdup_printf (_("%s Stopped"),
g_app_info_get_name (G_APP_INFO (app)));
/* TRANSLATORS: %s is the application name. */
message = g_strdup_printf (_("Device memory is nearly full. %s was using a lot of memory and was forced to stop."),
g_app_info_get_name (G_APP_INFO (app)));
...however it did not activate here, for some reason.
Here are the logs from journalctl on my computer when this happened, where we can see that the OOM killer chose Nautilus. Maybe there are clues there of what g-s-d is missing in terms of finding the process name?
First, the kernel's OOM appraisal:
Click to expand: some kernel stuff when the OOM is identified
Jul 18 17:40:05 laptop kernel: Purging GPU memory, 0 pages freed, 0 pages still pinned, 1601 pages left available.
Jul 18 17:40:05 laptop kernel: geoclue invoked oom-killer: gfp_mask=0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), order=0, oom_score_adj=0
Jul 18 17:40:05 laptop kernel: CPU: 3 PID: 474087 Comm: geoclue Tainted: G W 6.3.8-200.fc38.x86_64 #1
Jul 18 17:40:05 laptop kernel: Call Trace:
Jul 18 17:40:05 laptop kernel: <TASK>
Jul 18 17:40:05 laptop kernel: dump_stack_lvl+0x47/0x60
Jul 18 17:40:05 laptop kernel: dump_header+0x4a/0x260
Jul 18 17:40:05 laptop kernel: oom_kill_process+0xf9/0x190
Jul 18 17:40:05 laptop kernel: out_of_memory+0x1d2/0x570
Jul 18 17:40:05 laptop kernel: __alloc_pages_slowpath.constprop.0+0xcbc/0xe10
Jul 18 17:40:05 laptop kernel: __alloc_pages+0x224/0x250
Jul 18 17:40:05 laptop kernel: folio_alloc+0x1b/0x50
Jul 18 17:40:05 laptop kernel: __filemap_get_folio+0x15e/0x430
Jul 18 17:40:05 laptop kernel: filemap_fault+0x169/0x950
Jul 18 17:40:05 laptop kernel: ? filemap_map_pages+0x16d/0x680
Jul 18 17:40:05 laptop kernel: __do_fault+0x30/0x150
Jul 18 17:40:05 laptop kernel: do_fault+0x1d1/0x430
Jul 18 17:40:05 laptop kernel: __handle_mm_fault+0x653/0xf70
Jul 18 17:40:05 laptop kernel: ? __pfx_default_wake_function+0x10/0x10
Jul 18 17:40:05 laptop kernel: handle_mm_fault+0x11e/0x310
Jul 18 17:40:05 laptop kernel: do_user_addr_fault+0x1be/0x720
Jul 18 17:40:05 laptop kernel: exc_page_fault+0x7c/0x180
Jul 18 17:40:05 laptop kernel: asm_exc_page_fault+0x26/0x30
Jul 18 17:40:05 laptop kernel: RIP: 0033:0x7f92727fac70
Jul 18 17:40:05 laptop kernel: Code: Unable to access opcode bytes at 0x7f92727fac46.
Jul 18 17:40:05 laptop kernel: RSP: 002b:00007fffcf49e218 EFLAGS: 00010206
Jul 18 17:40:05 laptop kernel: RAX: 0002156ae6a21f2d RBX: 0000564af72cac40 RCX: 0000000000000017
Jul 18 17:40:05 laptop kernel: RDX: 00007f92727fac70 RSI: 000000000008f302 RDI: 0000564af7310f80
Jul 18 17:40:05 laptop kernel: RBP: 00007fffcf49e2d0 R08: 0000000000000000 R09: 0000564af81a2950
Jul 18 17:40:05 laptop kernel: R10: 00007fffcf533080 R11: 00000000289d3d48 R12: 00007fffcf49e270
Jul 18 17:40:05 laptop kernel: R13: 00007fffcf49e258 R14: 000000007fffffff R15: 0000564af7310f80
Jul 18 17:40:05 laptop kernel: </TASK>
Jul 18 17:40:05 laptop kernel: Mem-Info:
Jul 18 17:40:05 laptop kernel: active_anon:691855 inactive_anon:513574 isolated_anon:0
active_file:303 inactive_file:150 isolated_file:0
unevictable:1599 dirty:55 writeback:0
slab_reclaimable:54469 slab_unreclaimable:65361
mapped:7361 shmem:150241 pagetables:23794
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:25960 free_pcp:416 free_cma:0
Jul 18 17:40:05 laptop kernel: Node 0 active_anon:2767420kB inactive_anon:2054296kB active_file:1212kB inactive_file:600kB unevictable:6396kB isolated(anon):0kB isolated(file):0kB mapped:29444kB dirty:220kB writeback:0kB shmem:600964kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:35824kB pagetables:95176kB sec_pagetables:0kB all_unreclaimable? no
Jul 18 17:40:05 laptop kernel: Node 0 DMA free:14336kB boost:0kB min:128kB low:160kB high:192kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15980kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
Jul 18 17:40:05 laptop kernel: lowmem_reserve[]: 0 2092 7749 7749 7749
Jul 18 17:40:05 laptop kernel: Node 0 DMA32 free:41152kB boost:0kB min:18216kB low:22768kB high:27320kB reserved_highatomic:0KB active_anon:1106136kB inactive_anon:643208kB active_file:968kB inactive_file:0kB unevictable:32kB writepending:40kB present:2244476kB managed:2178316kB mlocked:32kB bounce:0kB free_pcp:960kB local_pcp:0kB free_cma:0kB
Jul 18 17:40:05 laptop kernel: lowmem_reserve[]: 0 0 5656 5656 5656
Jul 18 17:40:05 laptop kernel: Node 0 Normal free:48856kB boost:0kB min:49236kB low:61544kB high:73852kB reserved_highatomic:0KB active_anon:1662100kB inactive_anon:1410272kB active_file:0kB inactive_file:1092kB unevictable:6364kB writepending:180kB present:6004736kB managed:5799384kB mlocked:5984kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
Jul 18 17:40:05 laptop kernel: lowmem_reserve[]: 0 0 0 0 0
Jul 18 17:40:05 laptop kernel: Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB (M) 3*4096kB (M) = 14336kB
Jul 18 17:40:05 laptop kernel: Node 0 DMA32: 171*4kB (UE) 678*8kB (UME) 165*16kB (UME) 269*32kB (UME) 156*64kB (UME) 57*128kB (UME) 20*256kB (ME) 1*512kB (M) 1*1024kB (M) 0*2048kB 0*4096kB = 41292kB
Jul 18 17:40:05 laptop kernel: Node 0 Normal: 1205*4kB (UME) 162*8kB (UME) 619*16kB (UME) 598*32kB (UME) 220*64kB (UME) 1*128kB (M) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 49364kB
Jul 18 17:40:05 laptop kernel: Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Jul 18 17:40:05 laptop kernel: Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Jul 18 17:40:05 laptop kernel: 156457 total pagecache pages
Jul 18 17:40:05 laptop kernel: 4442 pages in swap cache
Jul 18 17:40:05 laptop kernel: Free swap = 164kB
Jul 18 17:40:05 laptop kernel: Total swap = 7992316kB
Jul 18 17:40:05 laptop kernel: 2066298 pages RAM
Jul 18 17:40:05 laptop kernel: 0 pages HighMem/MovableOnly
Jul 18 17:40:05 laptop kernel: 68033 pages reserved
Jul 18 17:40:05 laptop kernel: 0 pages cma reserved
Jul 18 17:40:05 laptop kernel: 0 pages hwpoisoned
Jul 18 17:40:05 laptop kernel: Tasks state (memory values in pages):
Jul 18 17:40:05 laptop kernel: [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name
Jul 18 17:40:05 laptop kernel: [ 887] 0 887 14395 584 118784 329 -250 systemd-journal
Jul 18 17:40:05 laptop kernel: [ 903] 0 903 9832 655 98304 1683 -1000 systemd-udevd
Jul 18 17:40:05 laptop kernel: [ 1148] 999 1148 3875 604 69632 176 -900 systemd-oomd
Jul 18 17:40:05 laptop kernel: [ 1149] 193 1149 8108 769 102400 1797 0 systemd-resolve
Jul 18 17:40:05 laptop kernel: [ 1150] 0 1150 3720 570 69632 159 0 systemd-userdbd
Jul 18 17:40:05 laptop kernel: [ 1151] 0 1151 4457 399 57344 141 -1000 auditd
Jul 18 17:40:05 laptop kernel: [ 1178] 70 1178 1838 546 57344 100 0 avahi-daemon
Jul 18 17:40:05 laptop kernel: [ 1184] 0 1184 75655 1341 81920 0 0 low-memory-moni
Jul 18 17:40:05 laptop kernel: [ 1185] 0 1185 654 403 45056 35 0 mcelog
Jul 18 17:40:05 laptop kernel: [ 1186] 998 1186 150904 1701 135168 1005 0 polkitd
Jul 18 17:40:05 laptop kernel: [ 1191] 0 1191 14689 698 114688 2017 0 systemd-logind
Jul 18 17:40:05 laptop kernel: [ 1192] 0 1192 132575 1336 118784 153 0 thermald
Jul 18 17:40:05 laptop kernel: [ 1198] 2 1198 622 408 40960 1 0 uptimed
Jul 18 17:40:05 laptop kernel: [ 1204] 984 1204 21695 519 73728 210 0 chronyd
Jul 18 17:40:05 laptop kernel: [ 1207] 70 1207 1736 167 53248 72 0 avahi-daemon
Jul 18 17:40:05 laptop kernel: [ 1214] 81 1214 2855 561 65536 486 -900 dbus-broker-lau
Jul 18 17:40:05 laptop kernel: [ 1231] 81 1231 3264 1056 65536 1002 -900 dbus-broker
Jul 18 17:40:05 laptop kernel: [ 1273] 0 1273 97522 1287 122880 561 0 ModemManager
Jul 18 17:40:05 laptop kernel: [ 1277] 0 1277 147007 1645 233472 6724 0 firewalld
Jul 18 17:40:05 laptop kernel: [ 1308] 0 1308 258184 1838 212992 853 0 NetworkManager
Jul 18 17:40:05 laptop kernel: [ 1332] 0 1332 67736 360 98304 231 0 gssproxy
Jul 18 17:40:05 laptop kernel: [ 1749] 0 1749 748358 1204 372736 3454 0 pcscd
Jul 18 17:40:05 laptop kernel: [ 2086] 1000 2086 63270 1645 118784 2258 100 systemd
Jul 18 17:40:05 laptop kernel: [ 2100] 1000 2100 21543 277 212992 4987 100 (sd-pam)
Jul 18 17:40:05 laptop kernel: [ 2228] 1000 2228 63719 714 114688 4012 0 powerline-daemo
Jul 18 17:40:05 laptop kernel: [ 2514] 1000 2514 106375 4883 454656 39990 200 pipewire-pulse
Jul 18 17:40:05 laptop kernel: [ 83133] 1000 83133 252 11 28672 17 200 catatonit
Jul 18 17:40:05 laptop kernel: [ 212996] 1000 212996 111235 412 73728 51 100 gpg-agent
Jul 18 17:40:05 laptop kernel: [ 212998] 1000 212998 74397 409 73728 65 100 scdaemon
Jul 18 17:40:05 laptop kernel: [ 465278] 0 465278 135585 1273 147456 561 0 abrtd
Jul 18 17:40:05 laptop kernel: [ 465283] 0 465283 102017 1002 307200 1152 0 abrt-dump-journ
Jul 18 17:40:05 laptop kernel: [ 465291] 0 465291 100318 992 249856 466 0 abrt-dump-journ
Jul 18 17:40:05 laptop kernel: [ 465360] 0 465360 112240 985 376832 482 0 abrt-dump-journ
Jul 18 17:40:05 laptop kernel: [ 465455] 0 465455 62252 644 110592 515 0 cupsd
Jul 18 17:40:05 laptop kernel: [ 473866] 0 473866 55496 380 49152 34 0 agetty
Jul 18 17:40:05 laptop kernel: [ 473867] 0 473867 55496 351 45056 33 0 agetty
Jul 18 17:40:05 laptop kernel: [ 473868] 0 473868 55496 378 53248 37 0 agetty
Jul 18 17:40:05 laptop kernel: [ 473869] 0 473869 55496 394 53248 28 0 agetty
Jul 18 17:40:05 laptop kernel: [ 473888] 0 473888 131176 1349 110592 155 0 accounts-daemon
Jul 18 17:40:05 laptop kernel: [ 473894] 0 473894 131199 1311 118784 134 0 power-profiles-
Jul 18 17:40:05 laptop kernel: [ 473899] 172 473899 21742 434 61440 28 0 rtkit-daemon
Jul 18 17:40:05 laptop kernel: [ 473900] 0 473900 130602 1217 98304 187 0 switcheroo-cont
Jul 18 17:40:05 laptop kernel: [ 473901] 0 473901 116845 1385 135168 551 0 udisksd
Jul 18 17:40:05 laptop kernel: [ 473904] 0 473904 130902 1459 110592 177 0 upowerd
Jul 18 17:40:05 laptop kernel: [ 473939] 0 473939 131444 1289 110592 263 0 gdm
Jul 18 17:40:05 laptop kernel: [ 473951] 0 473951 76427 1258 90112 195 0 uresourced
Jul 18 17:40:05 laptop kernel: [ 473978] 0 473978 3725 660 65536 294 0 wpa_supplicant
Jul 18 17:40:05 laptop kernel: [ 474087] 997 474087 655480 3352 344064 3304 0 geoclue
Jul 18 17:40:05 laptop kernel: [ 474122] 994 474122 133546 1343 126976 605 0 colord
Jul 18 17:40:05 laptop kernel: [ 474645] 0 474645 55496 381 45056 34 0 agetty
Jul 18 17:40:05 laptop kernel: [ 475598] 0 475598 135719 1356 147456 483 0 abrt-dbus
Jul 18 17:40:05 laptop kernel: [ 492200] 0 492200 2237 733 57344 128 0 bluetoothd
Jul 18 17:40:05 laptop kernel: [ 501781] 0 501781 1168 423 45056 65 0 alsactl
Jul 18 17:40:05 laptop kernel: [ 646448] 0 646448 131237 1212 118784 159 0 boltd
Jul 18 17:40:05 laptop kernel: [ 908970] 1000 908970 2289 660 57344 60 200 dbus-broker-lau
Jul 18 17:40:05 laptop kernel: [ 908972] 1000 908972 3114 934 61440 1007 200 dbus-broker
Jul 18 17:40:05 laptop kernel: [ 909545] 0 909545 151987 1576 139264 321 0 gdm-session-wor
Jul 18 17:40:05 laptop kernel: [ 909565] 1000 909565 169355 1374 155648 370 0 gnome-keyring-d
Jul 18 17:40:05 laptop kernel: [ 909602] 1000 909602 112058 1253 94208 118 0 gdm-wayland-ses
Jul 18 17:40:05 laptop kernel: [ 909606] 1000 909606 137764 1322 155648 414 0 gnome-session-b
Jul 18 17:40:05 laptop kernel: [ 909729] 1000 909729 75640 982 86016 99 200 gnome-session-c
Jul 18 17:40:05 laptop kernel: [ 909730] 1000 909730 79350 1496 110592 263 200 uresourced
Jul 18 17:40:05 laptop kernel: [ 909732] 1000 909732 211735 1458 188416 489 200 gnome-session-b
Jul 18 17:40:05 laptop kernel: [ 909736] 1000 909736 131550 1349 110592 164 200 gvfsd
Jul 18 17:40:05 laptop kernel: [ 909745] 1000 909745 168057 1345 126976 112 200 gvfsd-fuse
Jul 18 17:40:05 laptop kernel: [ 909770] 1000 909770 1714611 66429 3547136 102989 100 gnome-shell
Jul 18 17:40:05 laptop kernel: [ 909904] 1000 909904 95186 1344 106496 163 200 at-spi-bus-laun
Jul 18 17:40:05 laptop kernel: [ 909910] 1000 909910 2227 537 57344 72 200 dbus-broker-lau
Jul 18 17:40:05 laptop kernel: [ 909911] 1000 909911 1244 495 49152 143 200 dbus-broker
Jul 18 17:40:05 laptop kernel: [ 909935] 1000 909935 167576 1276 118784 264 200 xdg-permission-
Jul 18 17:40:05 laptop kernel: [ 909940] 1000 909940 251426 1991 253952 1441 200 gnome-shell-cal
Jul 18 17:40:05 laptop kernel: [ 909948] 1000 909948 372725 1933 466944 8902 200 evolution-sourc
Jul 18 17:40:05 laptop kernel: [ 909965] 1000 909965 58474 2374 90112 191 200 dconf-service
Jul 18 17:40:05 laptop kernel: [ 909971] 1000 909971 286903 1327 401408 6970 200 goa-daemon
Jul 18 17:40:05 laptop kernel: [ 909973] 1000 909973 151944 1388 139264 326 200 gvfs-udisks2-vo
Jul 18 17:40:05 laptop kernel: [ 909989] 1000 909989 130613 1282 102400 149 200 gvfs-mtp-volume
Jul 18 17:40:05 laptop kernel: [ 909994] 1000 909994 151246 1235 126976 303 200 goa-identity-se
Jul 18 17:40:05 laptop kernel: [ 910004] 1000 910004 150450 1202 135168 267 200 gvfs-afc-volume
Jul 18 17:40:05 laptop kernel: [ 910005] 1000 910005 122749 5774 180224 4528 200 gvfsd-metadata
Jul 18 17:40:05 laptop kernel: [ 910014] 1000 910014 130724 1245 106496 193 200 gvfs-goa-volume
Jul 18 17:40:05 laptop kernel: [ 910019] 1000 910019 131114 1260 110592 253 200 gvfs-gphoto2-vo
Jul 18 17:40:05 laptop kernel: [ 910032] 1000 910032 758564 11492 630784 5985 200 evolution-calen
Jul 18 17:40:05 laptop kernel: [ 910041] 1000 910041 789890 2087 303104 2041 200 gjs
Jul 18 17:40:05 laptop kernel: [ 910068] 1000 910068 578227 4891 487424 5521 200 evolution-addre
Jul 18 17:40:05 laptop kernel: [ 910093] 1000 910093 58356 1266 81920 152 200 at-spi2-registr
Jul 18 17:40:05 laptop kernel: [ 910107] 1000 910107 169024 1569 139264 1208 200 ibus-daemon
Jul 18 17:40:05 laptop kernel: [ 910108] 1000 910108 149132 1329 110592 121 200 gsd-a11y-settin
Jul 18 17:40:05 laptop kernel: [ 910109] 1000 910109 158882 1645 208896 1034 200 gsd-color
Jul 18 17:40:05 laptop kernel: [ 910113] 1000 910113 153242 1427 151552 291 200 gsd-datetime
Jul 18 17:40:05 laptop kernel: [ 910118] 1000 910118 168602 1411 135168 557 200 gsd-housekeepin
Jul 18 17:40:05 laptop kernel: [ 910126] 1000 910126 158443 1488 196608 1166 200 gsd-keyboard
Jul 18 17:40:05 laptop kernel: [ 910130] 1000 910130 213286 1740 229376 1058 200 gsd-media-keys
Jul 18 17:40:05 laptop kernel: [ 910136] 1000 910136 177254 1696 204800 1083 200 gsd-power
Jul 18 17:40:05 laptop kernel: [ 910140] 1000 910140 135419 1424 139264 326 200 gsd-print-notif
Jul 18 17:40:05 laptop kernel: [ 910144] 1000 910144 185910 1389 131072 89 200 gsd-rfkill
Jul 18 17:40:05 laptop kernel: [ 910146] 1000 910146 130530 1317 102400 107 200 gsd-screensaver
Jul 18 17:40:05 laptop kernel: [ 910149] 1000 910149 188673 1448 155648 290 200 gsd-sharing
Jul 18 17:40:05 laptop kernel: [ 910151] 1000 910151 171068 1330 159744 443 200 gsd-smartcard
Jul 18 17:40:05 laptop kernel: [ 910153] 1000 910153 151160 1348 126976 174 200 gsd-sound
Jul 18 17:40:05 laptop kernel: [ 910164] 1000 910164 186478 1327 139264 167 200 gsd-usb-protect
Jul 18 17:40:05 laptop kernel: [ 910167] 1000 910167 158527 1498 196608 1161 200 gsd-wacom
Jul 18 17:40:05 laptop kernel: [ 910174] 1000 910174 76292 1237 86016 246 200 gsd-disk-utilit
Jul 18 17:40:05 laptop kernel: [ 910194] 1000 910194 141396 1357 184320 986 200 abrt-applet
Jul 18 17:40:05 laptop kernel: [ 910195] 1000 910195 346486 1650 495616 4250 200 evolution-alarm
Jul 18 17:40:05 laptop kernel: [ 910246] 1000 910246 791680 1651 290816 1028 200 gjs
Jul 18 17:40:05 laptop kernel: [ 910251] 1000 910251 130824 1234 114688 162 200 ibus-dconf
Jul 18 17:40:05 laptop kernel: [ 910252] 1000 910252 159951 1299 208896 2549 200 ibus-extension-
Jul 18 17:40:05 laptop kernel: [ 910258] 1000 910258 186136 1344 131072 664 200 ibus-portal
Jul 18 17:40:05 laptop kernel: [ 910347] 1000 910347 159446 1308 188416 555 200 gsd-printer
Jul 18 17:40:05 laptop kernel: [ 910457] 1000 910457 112327 1283 98304 91 200 ibus-engine-sim
Jul 18 17:40:05 laptop kernel: [ 910632] 1000 910632 150186 1433 131072 262 200 gvfsd-trash
Jul 18 17:40:05 laptop kernel: [ 910645] 1000 910645 323350 1745 217088 756 200 xdg-desktop-por
Jul 18 17:40:05 laptop kernel: [ 910650] 1000 910650 310068 1310 196608 177 200 xdg-document-po
Jul 18 17:40:05 laptop kernel: [ 910656] 1000 910656 619 424 40960 27 200 fusermount3
Jul 18 17:40:05 laptop kernel: [ 910662] 1000 910662 784385 6929 2166784 68850 200 xdg-desktop-por
Jul 18 17:40:05 laptop kernel: [ 910672] 1000 910672 162372 1642 217088 1281 200 xdg-desktop-por
Jul 18 17:40:05 laptop kernel: [ 910680] 1000 910680 269860 8407 647168 9118 200 tracker-miner-f
Jul 18 17:40:05 laptop kernel: [ 910712] 1000 910712 150185 1343 122880 298 200 gvfsd-recent
Jul 18 17:40:05 laptop kernel: [ 910892] 1000 910892 192393 1382 327680 12648 200 python3
Jul 18 17:40:05 laptop kernel: [ 910940] 1000 910940 231199 1435 569344 8358 100 Xwayland
Jul 18 17:40:05 laptop kernel: [ 910959] 1000 910959 344946 1528 540672 3556 200 gsd-xsettings
Jul 18 17:40:05 laptop kernel: [ 910981] 1000 910981 138844 1396 184320 1298 200 ibus-x11
Jul 18 17:40:05 laptop kernel: [ 910994] 1000 910994 416663 1637 647168 6723 100 mutter-x11-fram
Jul 18 17:40:05 laptop kernel: [ 911202] 1000 911202 23692162 71356 5505024 335378 100 evolution
Jul 18 17:40:05 laptop kernel: [ 911266] 1000 911266 22622040 1396 458752 1801 100 WebKitNetworkPr
Jul 18 17:40:05 laptop kernel: [ 911268] 1000 911268 873 435 45056 42 100 bwrap
Jul 18 17:40:05 laptop kernel: [ 911269] 1000 911269 873 277 45056 53 100 bwrap
Jul 18 17:40:05 laptop kernel: [ 911270] 1000 911270 130517 1270 106496 121 100 xdg-dbus-proxy
Jul 18 17:40:05 laptop kernel: [ 911273] 1000 911273 873 436 40960 44 100 bwrap
Jul 18 17:40:05 laptop kernel: [ 911274] 1000 911274 873 277 40960 54 100 bwrap
Jul 18 17:40:05 laptop kernel: [ 911277] 1000 911277 27198617 4029 1454080 27950 100 WebKitWebProces
Jul 18 17:40:05 laptop kernel: [ 911607] 1000 911607 1838 543 57344 167 0 ssh-agent
Jul 18 17:40:05 laptop kernel: [ 911769] 1000 911769 254739 1363 167936 352 200 gvfsd-network
Jul 18 17:40:05 laptop kernel: [ 911805] 1000 911805 150677 1333 122880 226 200 gvfsd-dnssd
Jul 18 17:40:05 laptop kernel: [ 912537] 1000 912537 130601 1322 106496 103 200 flatpak-session
Jul 18 17:40:05 laptop kernel: [ 912542] 1000 912542 1485 227 45056 51 200 p11-kit-server
Jul 18 17:40:05 laptop kernel: [ 913701] 1000 913701 446424 6207 720896 31303 200 gedit
Jul 18 17:40:05 laptop kernel: [ 914429] 1000 914429 1467764 206993 8007680 91265 100 firefox
Jul 18 17:40:05 laptop kernel: [ 914450] 1000 914450 2115 585 61440 819 200 cgroupify
Jul 18 17:40:05 laptop kernel: [ 914539] 1000 914539 50271 1175 299008 2366 100 Socket Process
Jul 18 17:40:05 laptop kernel: [ 914576] 1000 914576 667843 4518 720896 3628 167 Privileged Cont
Jul 18 17:40:05 laptop kernel: [ 914690] 1000 914690 5064073 43805 3268608 37588 100 WebExtensions
Jul 18 17:40:05 laptop kernel: [ 915811] 1000 915811 157806 1277 884736 5125 100 RDD Process
Jul 18 17:40:05 laptop kernel: [ 915813] 1000 915813 68294 1372 413696 2535 100 Utility Process
Jul 18 17:40:05 laptop kernel: [ 917900] 1000 917900 80102 695 94208 823 100 sd_espeak-ng-mb
Jul 18 17:40:05 laptop kernel: [ 917907] 1000 917907 80116 752 94208 839 100 sd_espeak-ng
Jul 18 17:40:05 laptop kernel: [ 917929] 1000 917929 39918 692 81920 162 100 sd_dummy
Jul 18 17:40:05 laptop kernel: [ 917932] 1000 917932 82390 572 94208 934 100 speech-dispatch
Jul 18 17:40:05 laptop kernel: [ 931299] 1000 931299 196267 1512 212992 3975 200 gvfsd-http
Jul 18 17:40:05 laptop kernel: [ 970634] 1000 970634 259112 1520 397312 6244 200 gnome-terminal-
Jul 18 17:40:05 laptop kernel: [ 970670] 1000 970670 56201 492 65536 473 200 bash
Jul 18 17:40:05 laptop kernel: [ 970708] 1000 970708 56201 480 69632 477 200 bash
Jul 18 17:40:05 laptop kernel: [ 972941] 1000 972941 56201 442 65536 493 200 bash
Jul 18 17:40:05 laptop kernel: [ 981301] 1000 981301 56201 485 69632 461 200 bash
Jul 18 17:40:05 laptop kernel: [ 982636] 1000 982636 56201 450 69632 468 200 bash
Jul 18 17:40:05 laptop kernel: [ 986444] 1000 986444 56201 486 57344 453 200 bash
Jul 18 17:40:05 laptop kernel: [ 995618] 1000 995618 56201 477 65536 458 200 bash
Jul 18 17:40:05 laptop kernel: [1054515] 1000 1054515 752677 14556 1662976 12592 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1074381] 1000 1074381 873 441 40960 42 100 bwrap
Jul 18 17:40:05 laptop kernel: [1074382] 1000 1074382 873 286 40960 56 100 bwrap
Jul 18 17:40:05 laptop kernel: [1074393] 1000 1074393 27097702 2188 1036288 5188 100 WebKitWebProces
Jul 18 17:40:05 laptop kernel: [1081748] 1000 1081748 1932157 72398 4005888 29321 100 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1118943] 1000 1118943 802498 41379 2347008 54102 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1120950] 1000 1120950 845892 7327 1765376 88661 200 nautilus
Jul 18 17:40:05 laptop kernel: [1123111] 1000 1123111 716983 12871 1220608 8801 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1124617] 1000 1124617 1120412 2122 761856 4780 200 gjs
Jul 18 17:40:05 laptop kernel: [1141228] 1000 1141228 22585165 1399 438272 1776 100 WebKitNetworkPr
Jul 18 17:40:05 laptop kernel: [1141229] 1000 1141229 873 446 45056 42 100 bwrap
Jul 18 17:40:05 laptop kernel: [1141231] 1000 1141231 873 311 45056 58 100 bwrap
Jul 18 17:40:05 laptop kernel: [1141234] 1000 1141234 873 431 45056 42 100 bwrap
Jul 18 17:40:05 laptop kernel: [1141235] 1000 1141235 873 294 45056 57 100 bwrap
Jul 18 17:40:05 laptop kernel: [1141236] 1000 1141236 27095765 1501 1024000 5757 100 WebKitWebProces
Jul 18 17:40:05 laptop kernel: [1141237] 1000 1141237 27097674 1948 1032192 5260 100 WebKitWebProces
Jul 18 17:40:05 laptop kernel: [1145638] 1000 1145638 787873 36935 2166784 48484 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1145760] 1000 1145760 820596 42887 2461696 54732 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1145826] 1000 1145826 801041 37670 2170880 50127 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1154744] 1000 1154744 68725 1174 122880 1068 200 pipewire
Jul 18 17:40:05 laptop kernel: [1154745] 1000 1154745 137940 1978 151552 2176 200 wireplumber
Jul 18 17:40:05 laptop kernel: [1158548] 1000 1158548 661113 2978 626688 3516 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1158752] 1000 1158752 731710 17003 1748992 16622 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1158987] 1000 1158987 23236415 2956 1282048 16505 100 epiphany
Jul 18 17:40:05 laptop kernel: [1159014] 1000 1159014 26884478 1804 573440 5628 100 WebKitNetworkPr
Jul 18 17:40:05 laptop kernel: [1159045] 1000 1159045 873 432 45056 39 100 bwrap
Jul 18 17:40:05 laptop kernel: [1159046] 1000 1159046 873 323 45056 23 100 bwrap
Jul 18 17:40:05 laptop kernel: [1159047] 1000 1159047 112019 1293 102400 59 100 xdg-dbus-proxy
Jul 18 17:40:05 laptop kernel: [1159050] 1000 1159050 873 415 36864 35 100 bwrap
Jul 18 17:40:05 laptop kernel: [1159051] 1000 1159051 873 301 36864 24 100 bwrap
Jul 18 17:40:05 laptop kernel: [1159061] 1000 1159061 27409650 29127 1703936 10475 100 WebKitWebProces
Jul 18 17:40:05 laptop kernel: [1180214] 1000 1180214 747458 13028 1736704 16274 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1184668] 1000 1184668 27415665 2408 1593344 14509 100 epiphany
Jul 18 17:40:05 laptop kernel: [1184695] 1000 1184695 26952937 4071 643072 4338 100 WebKitNetworkPr
Jul 18 17:40:05 laptop kernel: [1184750] 1000 1184750 873 408 45056 37 100 bwrap
Jul 18 17:40:05 laptop kernel: [1184751] 1000 1184751 873 272 45056 54 100 bwrap
Jul 18 17:40:05 laptop kernel: [1184752] 1000 1184752 112019 1199 102400 95 100 xdg-dbus-proxy
Jul 18 17:40:05 laptop kernel: [1184755] 1000 1184755 873 434 45056 42 100 bwrap
Jul 18 17:40:05 laptop kernel: [1184756] 1000 1184756 873 286 45056 58 100 bwrap
Jul 18 17:40:05 laptop kernel: [1184763] 1000 1184763 28026856 71877 3174400 17150 100 WebKitWebProces
Jul 18 17:40:05 laptop kernel: [1211434] 1000 1211434 688655 10879 1052672 3137 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1227597] 1000 1227597 56201 433 73728 481 200 bash
Jul 18 17:40:05 laptop kernel: [1228771] 0 1228771 3521 612 61440 299 -1000 sshd
Jul 18 17:40:05 laptop kernel: [1260072] 1000 1260072 873 479 45056 32 200 bwrap
Jul 18 17:40:05 laptop kernel: [1260088] 1000 1260088 873 416 49152 32 200 bwrap
Jul 18 17:40:05 laptop kernel: [1260089] 1000 1260089 112052 673 98304 64 200 xdg-dbus-proxy
Jul 18 17:40:05 laptop kernel: [1260092] 1000 1260092 873 335 45056 32 200 bwrap
Jul 18 17:40:05 laptop kernel: [1260093] 1000 1260093 170315 4573 520192 21696 200 python3
Jul 18 17:40:05 laptop kernel: [1263900] 0 1263900 67537 5756 155648 2784 0 sssd_kcm
Jul 18 17:40:05 laptop kernel: [1267296] 1000 1267296 873 448 40960 32 100 bwrap
Jul 18 17:40:05 laptop kernel: [1267315] 1000 1267315 873 448 40960 0 100 bwrap
Jul 18 17:40:05 laptop kernel: [1267316] 1000 1267316 112059 640 98304 64 100 xdg-dbus-proxy
Jul 18 17:40:05 laptop kernel: [1267319] 1000 1267319 894 320 40960 32 100 bwrap
Jul 18 17:40:05 laptop kernel: [1267320] 1000 1267320 795034 14730 2502656 134212 100 dev.geopjr.Tuba
Jul 18 17:40:05 laptop kernel: [1267382] 1000 1267382 4260 1478 73728 2368 200 p11-kit-remote
Jul 18 17:40:05 laptop kernel: [1279557] 1000 1279557 267357 1501 385024 9664 200 evince
Jul 18 17:40:05 laptop kernel: [1279567] 1000 1279567 57214 640 69632 64 200 evinced
Jul 18 17:40:05 laptop kernel: [1280419] 1000 1280419 724046 14998 1216512 11131 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1281058] 1000 1281058 686499 18416 999424 4960 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1284127] 1000 1284127 678777 7981 851968 8672 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1284501] 1000 1284501 705971 15681 1187840 7424 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1285977] 1000 1285977 690254 7949 843776 6848 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1289266] 1000 1289266 653248 3508 487424 514 100 Isolated Servic
Jul 18 17:40:05 laptop kernel: [1289558] 1000 1289558 694140 24345 1130496 96 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1289666] 1000 1289666 693206 24422 1101824 32 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1289757] 1000 1289757 725863 28731 1798144 0 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1289944] 1000 1289944 667450 8732 696320 224 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1290303] 0 1290303 3813 672 69632 0 0 systemd-userwor
Jul 18 17:40:05 laptop kernel: [1290369] 1000 1290369 683402 19878 905216 0 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1290480] 1000 1290480 675292 15636 819200 64 167 Isolated Web Co
Jul 18 17:40:05 laptop kernel: [1290568] 0 1290568 3813 768 69632 0 0 systemd-userwor
Jul 18 17:40:05 laptop kernel: [1290678] 0 1290678 3813 704 65536 0 0 systemd-userwor
Then, its decision and the aftermath:
Jul 18 17:40:05 laptop kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/user.slice/user-1000.slice/user@1000.service/app.slice/dbus-:1.2-org.freedesktop.FileManager1@0.service,task=nautilus,pid=1120950,uid=1000
Jul 18 17:40:05 laptop kernel: Out of memory: Killed process 1120950 (nautilus) total-vm:3383568kB, anon-rss:24088kB, file-rss:5200kB, shmem-rss:20kB, UID:1000 pgtables:1724kB oom_score_adj:200
Jul 18 17:40:05 laptop systemd[1]: user@1000.service: A process of this unit has been killed by the OOM killer.
Jul 18 17:40:05 laptop systemd[2086]: dbus-:1.2-org.freedesktop.FileManager1@0.service: A process of this unit has been killed by the OOM killer.
Jul 18 17:40:05 laptop systemd[2086]: dbus-:1.2-org.freedesktop.FileManager1@0.service: Main process exited, code=killed, status=9/KILL
Jul 18 17:40:05 laptop systemd[2086]: dbus-:1.2-org.freedesktop.FileManager1@0.service: Failed with result 'oom-kill'.
Jul 18 17:40:05 laptop systemd[2086]: dbus-:1.2-org.freedesktop.FileManager1@0.service: Unit process 1279557 (evince) remains running after unit stopped.
Jul 18 17:40:05 laptop systemd[2086]: dbus-:1.2-org.freedesktop.FileManager1@0.service: Consumed 2min 33.421s CPU time.
Probably unrelated:
Jul 18 17:41:07 laptop systemd[2086]: app-gnome-org.gnome.Epiphany.WebApp_somebighash-1158987.scope: Consumed 39min 49.210s CPU time.
Jul 18 17:41:15 laptop systemd[2086]: app-gnome-org.gnome.Epiphany.WebApp_somebighash-1184668.scope: Consumed 16min 25.733s CPU time.
I've also seen other processes than Nautilus getting killed without the notification identifying them. For example,
Jul 22 22:33:55 laptop systemd[1]: user@1000.service: A process of this unit has been killed by the OOM killer.
Jul 22 22:33:55 laptop systemd[2086]: xdg-desktop-portal-gnome.service: A process of this unit has been killed by the OOM killer.
Jul 22 22:33:55 laptop systemd[2086]: xdg-desktop-portal-gnome.service: Main process exited, code=killed, status=9/KILL