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psi detecting memory pressure on a fairly idle 4GB desktop with RAM still available
psi-monitor[397]: Above threshold limit, killing task and pausing for recovery
kernel: sysrq: SysRq : Manual OOM execution
kernel: Purging GPU memory, 0 pages freed, 1237 pages still pinned.
kernel: 1 and 0 pages still available in the bound and unbound GPU page lists.
kernel: kworker/0:2 invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL), order=-1, oom_score_adj=0
kernel: CPU: 0 PID: 11755 Comm: kworker/0:2 Tainted: G C 5.0.0-17-generic #18+dev158.e8e24cebeos3.6.2
kernel: Hardware name: LENOVO 81D1/LNVNB161216, BIOS 7XCN28WW 10/26/2018
kernel: Workqueue: events moom_callback
kernel: Call Trace:
kernel: dump_stack+0x63/0x8a
kernel: dump_header+0x54/0x308
kernel: oom_kill_process.cold.29+0xb/0x1d6
kernel: out_of_memory+0x1bc/0x480
kernel: moom_callback+0x7d/0xb0
kernel: process_one_work+0x20f/0x410
kernel: worker_thread+0x34/0x400
kernel: kthread+0x120/0x140
kernel: ? process_one_work+0x410/0x410
kernel: ? __kthread_parkme+0x70/0x70
kernel: ret_from_fork+0x1f/0x40
kernel: Mem-Info:
kernel: active_anon:284480 inactive_anon:173829 isolated_anon:20
active_file:32248 inactive_file:69145 isolated_file:15
unevictable:137 dirty:1146 writeback:7 unstable:0
slab_reclaimable:62881 slab_unreclaimable:19703
mapped:50004 shmem:83889 pagetables:6448 bounce:0
free:287807 free_pcp:844 free_cma:0
kernel: Node 0 active_anon:1137920kB inactive_anon:695316kB active_file:128992kB inactive_file:276580kB unevictable:548kB isolated(anon):80kB isolated(file):60kB mapped:200016kB dirty:4584kB writeback:28kB shmem:335556kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
kernel: Node 0 DMA free:15844kB min:32kB low:44kB high:56kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15928kB managed:15852kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
kernel: lowmem_reserve[]: 0 1750 3701 3701 3701
kernel: Node 0 DMA32 free:1119828kB min:3672kB low:5464kB high:7256kB active_anon:491188kB inactive_anon:60708kB active_file:28576kB inactive_file:9328kB unevictable:0kB writepending:160kB present:1899580kB managed:1833420kB mlocked:0kB kernel_stack:512kB pagetables:7144kB bounce:0kB free_pcp:2716kB local_pcp:1364kB free_cma:0kB
kernel: lowmem_reserve[]: 0 0 1950 1950 1950
kernel: Node 0 Normal free:15556kB min:4092kB low:6088kB high:8084kB active_anon:646732kB inactive_anon:634608kB active_file:100368kB inactive_file:267172kB unevictable:548kB writepending:4440kB present:2097152kB managed:2005732kB mlocked:32kB kernel_stack:7600kB pagetables:18648kB bounce:0kB free_pcp:660kB local_pcp:220kB free_cma:0kB
kernel: lowmem_reserve[]: 0 0 0 0 0
kernel: Node 0 DMA: 1*4kB (U) 2*8kB (U) 1*16kB (U) 2*32kB (U) 4*64kB (U) 1*128kB (U) 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (ME) = 15844kB
kernel: Node 0 DMA32: 22663*4kB (UME) 11827*8kB (UME) 6584*16kB (UME) 3563*32kB (UME) 1729*64kB (UME) 1093*128kB (UME) 431*256kB (UME) 194*512kB (ME) 53*1024kB (ME) 42*2048kB (ME) 28*4096kB (M) = 1119828kB
kernel: Node 0 Normal: 1429*4kB (UME) 554*8kB (UME) 202*16kB (UE) 40*32kB (UME) 8*64kB (ME) 3*128kB (M) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 15556kB
kernel: Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
kernel: Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
kernel: 185310 total pagecache pages
kernel: 7 pages in swap cache
kernel: Swap cache stats: add 28, delete 21, find 0/2
kernel: Free swap = 5781992kB
kernel: Total swap = 5782504kB
kernel: 1003165 pages RAM
kernel: 0 pages HighMem/MovableOnly
kernel: 39414 pages reserved
kernel: 0 pages cma reserved
kernel: 0 pages hwpoisoned
kernel: Tasks state (memory values in pages):
kernel: [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name
kernel: [ 302] 0 302 11349 1364 94208 0 0 systemd-journal
kernel: [ 325] 0 325 5369 895 61440 0 -1000 systemd-udevd
kernel: [ 379] 0 379 98299 2410 126976 0 0 udisksd
kernel: [ 381] 0 381 112631 1213 106496 0 0 accounts-daemon
kernel: [ 392] 105 392 439141 4416 204800 0 0 polkitd
kernel: [ 394] 0 394 59382 856 94208 0 0 cupsd
kernel: [ 397] 0 397 568 119 40960 0 0 psi-monitor
kernel: [ 400] 0 400 132088 1275 122880 0 0 upowerd
kernel: [ 403] 114 403 245386 3240 192512 0 0 geoclue
kernel: [ 406] 0 406 59649 1774 94208 0 0 ModemManager
kernel: [ 407] 101 407 2134 970 57344 0 -900 dbus-daemon
kernel: [ 408] 0 408 221258 2677 180224 0 0 NetworkManager
kernel: [ 409] 113 409 89691 3175 147456 0 0 eos-metrics-eve
kernel: [ 420] 102 420 1630 642 53248 0 0 avahi-daemon
kernel: [ 422] 0 422 3884 1012 73728 0 0 systemd-logind
kernel: [ 515] 102 515 1533 83 53248 0 0 avahi-daemon
kernel: [ 517] 0 517 43249 1392 110592 0 0 cups-browsed
kernel: [ 524] 106 524 113942 2105 122880 0 0 colord
kernel: [ 548] 0 548 70813 1643 131072 0 0 eos-metrics-ins
kernel: [ 707] 0 707 3504 1411 69632 0 0 wpa_supplicant
kernel: [ 720] 0 720 131543 1225 114688 3 0 gdm
kernel: [ 742] 0 742 92140 12992 344064 0 0 Xorg
kernel: [ 2044] 108 2044 38166 485 57344 0 0 rtkit-daemon
kernel: [ 2074] 0 2074 2863 1142 61440 0 0 bluetoothd
kernel: [ 4472] 0 4472 250082 1747 200704 0 0 gdm-session-wor
kernel: [ 4746] 1001 4746 4366 1371 77824 0 0 systemd
kernel: [ 4762] 1001 4762 88844 1256 131072 0 0 (sd-pam)
kernel: [ 4841] 1001 4841 112243 807 94208 1 0 gnome-keyring-d
kernel: [ 4862] 1001 4862 161793 1698 204800 0 0 gnome-session-b
kernel: [ 4896] 1001 4896 1935 891 53248 0 0 dbus-daemon
kernel: [ 4899] 1001 4899 112121 1175 102400 0 0 gvfsd
kernel: [ 4984] 1001 4984 1462 122 40960 0 0 ssh-agent
kernel: [ 5001] 1001 5001 131047 1337 102400 0 0 ibus-daemon
kernel: [ 5008] 1001 5008 112270 1101 98304 0 0 ibus-dconf
kernel: [ 5009] 1001 5009 126548 2412 225280 0 0 ibus-ui-gtk3
kernel: [ 5011] 1001 5011 126285 2546 212992 0 0 ibus-extension-
kernel: [ 5014] 1001 5014 78207 1242 98304 0 0 at-spi-bus-laun
kernel: [ 5015] 1001 5015 107040 2052 196608 0 0 ibus-x11
kernel: [ 5022] 1001 5022 112232 1057 102400 0 0 ibus-portal
kernel: [ 5028] 1001 5028 1715 591 53248 0 0 dbus-daemon
kernel: [ 5033] 1001 5033 42537 898 90112 0 0 at-spi2-registr
kernel: [ 5046] 1001 5046 151256 1464 131072 0 0 xdg-desktop-por
kernel: [ 5057] 1001 5057 150144 978 110592 0 0 xdg-document-po
kernel: [ 5058] 1001 5058 748134 29153 724992 0 0 gnome-shell
kernel: [ 5061] 1001 5061 111079 623 90112 0 0 xdg-permission-
kernel: [ 5076] 1001 5076 93815 1185 98304 0 0 ibus-engine-sim
kernel: [ 5077] 1001 5077 180876 2117 241664 0 0 xdg-desktop-por
kernel: [ 5133] 1001 5133 378471 2044 176128 0 0 pulseaudio
kernel: [ 5137] 1001 5137 127250 1808 196608 0 0 gnome-shell-cal
kernel: [ 5141] 1001 5141 309983 2151 315392 0 0 evolution-sourc
kernel: [ 5149] 1001 5149 191669 2356 311296 0 0 goa-daemon
kernel: [ 5152] 1001 5152 159631 1595 151552 0 0 gvfs-udisks2-vo
kernel: [ 5156] 1001 5156 111194 954 90112 0 0 gvfs-goa-volume
kernel: [ 5165] 1001 5165 131800 1183 122880 0 0 goa-identity-se
kernel: [ 5171] 1001 5171 131861 887 118784 0 0 gvfs-afc-volume
kernel: [ 5176] 1001 5176 111141 1022 94208 0 0 gvfs-mtp-volume
kernel: [ 5180] 1001 5180 111793 1144 94208 0 0 gvfs-gphoto2-vo
kernel: [ 5184] 0 5184 162418 5374 204800 4 0 eos-updater
kernel: [ 5214] 1001 5214 132164 834 122880 0 0 gsd-smartcard
kernel: [ 5218] 1001 5218 143845 2122 208896 0 0 gsd-keyboard
kernel: [ 5221] 1001 5221 144170 2719 225280 0 0 gsd-power
kernel: [ 5223] 1001 5223 112711 1093 106496 0 0 gsd-a11y-settin
kernel: [ 5224] 1001 5224 118699 1240 143360 0 0 gsd-sound
kernel: [ 5229] 1001 5229 230567 2593 262144 0 0 gsd-media-keys
kernel: [ 5231] 1001 5231 114756 1402 126976 0 0 gsd-print-notif
kernel: [ 5232] 1001 5232 106925 2054 200704 0 0 gsd-clipboard
kernel: [ 5233] 1001 5233 125459 2079 200704 0 0 gsd-wacom
kernel: [ 5235] 1001 5235 112712 1085 98304 0 0 gsd-mouse
kernel: [ 5239] 1001 5239 148955 1064 102400 0 0 gsd-rfkill
kernel: [ 5243] 1001 5243 218434 2613 262144 0 0 gsd-color
kernel: [ 5246] 1001 5246 144301 2198 221184 0 0 gsd-xsettings
kernel: [ 5247] 1001 5247 112002 1027 94208 0 0 gsd-screensaver
kernel: [ 5251] 1001 5251 133601 1521 212992 0 0 gsd-datetime
kernel: [ 5256] 1001 5256 151423 1418 143360 0 0 gsd-sharing
kernel: [ 5259] 1001 5259 131212 1193 110592 0 0 gsd-housekeepin
kernel: [ 5289] 1001 5289 143643 1285 200704 0 0 gsd-printer
kernel: [ 5351] 1001 5351 285749 2202 315392 0 0 evolution-calen
kernel: [ 5367] 1001 5367 57775 1287 81920 0 0 gsd-disk-utilit
kernel: [ 5371] 1001 5371 180227 2998 180224 0 0 tracker-miner-f
kernel: [ 5375] 1001 5375 376699 89862 1114112 0 0 gnome-software
kernel: [ 5379] 1001 5379 272227 3766 421888 0 0 evolution-alarm
kernel: [ 5389] 1001 5389 38834 1008 69632 0 0 dconf-service
kernel: [ 5391] 1001 5391 237043 1885 249856 0 0 evolution-addre
kernel: [ 5401] 1001 5401 206101 4059 266240 0 0 tracker-store
kernel: [ 5464] 127 5464 113492 1606 110592 0 0 mogwai-schedule
kernel: [ 6445] 1001 6445 511174 17706 942080 0 0 chromium-browse
kernel: [ 6496] 1001 6496 128193 3648 450560 0 0 chromium-browse
kernel: [ 6503] 1001 6503 128193 2787 282624 0 0 chromium-browse
kernel: [ 6522] 1001 6522 271367 21408 708608 0 200 chromium-browse
kernel: [ 6536] 1001 6536 389945 7210 577536 0 200 chromium-browse
kernel: [ 7794] 1001 7794 532204 73861 6832128 0 300 chromium-browse
kernel: [ 7815] 1001 7815 490284 72775 6045696 0 300 chromium-browse
kernel: [ 7879] 1001 7879 337240 6948 1163264 0 300 chromium-browse
kernel: [ 7888] 1001 7888 354475 6169 1060864 0 300 chromium-browse
kernel: [ 7918] 1001 7918 376408 26461 2932736 0 300 chromium-browse
kernel: [ 7965] 1001 7965 330237 4615 798720 0 300 chromium-browse
kernel: [ 8839] 0 8839 2371 823 53248 0 0 dhclient
kernel: [ 9613] 1001 9613 92843 1038 94208 0 0 gvfsd-metadata
kernel: [ 9805] 0 9805 352915 19557 405504 0 0 flatpak-system-
kernel: [ 10215] 112 10215 18698 814 65536 0 0 ntpd
kernel: [ 10596] 1001 10596 287794 9925 397312 0 0 nautilus
kernel: [ 10600] 1001 10600 131538 1654 110592 0 0 gvfsd-trash
kernel: [ 10615] 1001 10615 130560 1315 114688 0 0 gvfsd-burn
kernel: [ 11555] 0 11555 54852 743 53248 0 0 mount.ntfs
kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/user.slice/user-1001.slice/session-2.scope,task=chromium-browse,pid=7794,uid=1001
kernel: Out of memory: Kill process 7794 (chromium-browse) score 331 or sacrifice child
kernel: Killed process 7794 (chromium-browse) total-vm:2128816kB, anon-rss:271296kB, file-rss:7984kB, shmem-rss:16164kB
kernel: oom_reaper: reaped process 7794 (chromium-browse), now anon-rss:0kB, file-rss:0kB, shmem-rss:15996kB
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