On Fri, 2019-09-06 at 05:59 +0900, Tetsuo Handa wrote: > On 2019/09/06 1:10, Qian Cai wrote: > > On Tue, 2019-09-03 at 17:13 +0200, Michal Hocko wrote: > > > On Tue 03-09-19 11:02:46, Qian Cai wrote: > > > > Well, I still see OOM sometimes kills wrong processes like ssh, systemd > > > > processes while LTP OOM tests with staight-forward allocation patterns. > > > > > > Please report those. Most cases I have seen so far just turned out to > > > work as expected and memory hogs just used oom_score_adj or similar. > > > > Here is the one where oom01 should be one to be killed. > > I assume that there are previous OOM killer events before > > > > > [92598.855697][ T2588] Swap cache stats: add 105240923, delete 105250445, find > > 42196/101577 > > line. Please be sure to include. Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: 104 total pagecache pages Sep 5 12:00:52 hp-xl420gen9-01 kernel: 72 pages in swap cache Sep 5 12:00:52 hp-xl420gen9-01 kernel: Swap cache stats: add 105228915, delete 105238918, find 41766/100491 Sep 5 12:00:52 hp-xl420gen9-01 kernel: Free swap = 16382644kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: Total swap = 16465916kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: 7275091 pages RAM Sep 5 12:00:52 hp-xl420gen9-01 kernel: 0 pages HighMem/MovableOnly Sep 5 12:00:52 hp-xl420gen9-01 kernel: 1315554 pages reserved Sep 5 12:00:52 hp-xl420gen9-01 kernel: 16384 pages cma reserved Sep 5 12:00:52 hp-xl420gen9-01 kernel: Tasks state (memory values in pages): Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 1662] 0 1662 29511 0 290816 296 0 systemd- journal Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2586] 998 2586 508086 0 368640 1838 0 polkitd Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2587] 0 2587 52786 0 421888 500 0 sssd Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2588] 0 2588 31223 0 139264 207 0 irqbalance Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2589] 81 2589 18381 0 167936 217 -900 dbus- daemon Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2590] 0 2590 97260 0 372736 621 0 NetworkManager Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2594] 0 2594 95350 1 229376 758 0 rngd Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2598] 995 2598 7364 0 94208 102 0 chronyd Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2629] 0 2629 106234 0 442368 3959 0 tuned Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2638] 0 2638 23604 0 212992 240 -1000 sshd Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2642] 0 2642 10392 0 102400 138 0 rhsmcertd Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2691] 0 2691 21877 0 208896 277 0 systemd- logind Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2700] 0 2700 3916 0 69632 45 0 agetty Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2705] 0 2705 23370 0 225280 393 0 systemd Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2730] 0 2730 37063 0 294912 667 0 (sd-pam) Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2922] 0 2922 9020 0 98304 232 0 crond Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 3036] 0 3036 37797 1 307200 305 0 sshd Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 3057] 0 3057 37797 0 303104 335 0 sshd Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 3065] 0 3065 6343 1 86016 163 0 bash Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 38249] 0 38249 58330 0 221184 293 0 rsyslogd Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 11329] 0 11329 55131 0 454656 427 0 sssd_nss Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 11331] 0 11331 54424 0 434176 637 0 sssd_be Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 25247] 0 25247 25746 1 212992 300 -1000 systemd-udevd Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 25391] 0 25391 2184 0 65536 32 0 oom01 25392 2184 0 65536 39 0 oom01 Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 25507] 0 25507 1581195 1411594 11395072 48 0 oom01 Sep 5 12:00:52 hp-xl420gen9-01 kernel: oom- kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0- 1,global_oom,task_memcg=/user.slice,task=oom01,pid=25507,uid=0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: Out of memory: Killed process 25507 (oom01) total-vm:6324780kB, anon-rss:5647168kB, file-rss:0kB, shmem-rss:0kB, UID:0 pgtables:11395072kB oom_score_adj:0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: oom_reaper: reaped process 25507 (oom01), now anon-rss:5647452kB, file-rss:0kB, shmem-rss:0kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: irqbalance invoked oom-killer: gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: CPU: 40 PID: 2588 Comm: irqbalance Not tainted 5.3.0-rc7-next-20190904+ #5 Sep 5 12:00:52 hp-xl420gen9-01 kernel: Hardware name: HP ProLiant XL420 Gen9/ProLiant XL420 Gen9, BIOS U19 12/27/2015 Sep 5 12:00:52 hp-xl420gen9-01 kernel: Call Trace: Sep 5 12:00:52 hp-xl420gen9-01 kernel: dump_stack+0x62/0x9a Sep 5 12:00:52 hp-xl420gen9-01 kernel: dump_header+0xf4/0x610 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? ___ratelimit+0x4a/0x1a0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? find_lock_task_mm+0x110/0x110 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? ___ratelimit+0xfa/0x1a0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: oom_kill_process+0x136/0x1b0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: out_of_memory+0x1fb/0x960 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? oom_killer_disable+0x230/0x230 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? mutex_trylock+0x17d/0x1a0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: __alloc_pages_nodemask+0x1475/0x1bb0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? gfp_pfmemalloc_allowed+0xc0/0xc0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? __swp_swapcount+0xbf/0x160 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? rwlock_bug.part.0+0x60/0x60 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? __swp_swapcount+0x14a/0x160 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? __swp_swapcount+0x109/0x160 Sep 5 12:00:52 hp-xl420gen9-01 kernel: alloc_pages_vma+0x18f/0x200 Sep 5 12:00:52 hp-xl420gen9-01 kernel: __read_swap_cache_async+0x3ba/0x790 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? lookup_swap_cache+0x3c0/0x3c0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: read_swap_cache_async+0x69/0xd0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? __read_swap_cache_async+0x790/0x790 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? si_swapinfo+0xc0/0x150 Sep 5 12:00:52 hp-xl420gen9-01 kernel: swap_cluster_readahead+0x2a4/0x640 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? read_swap_cache_async+0xd0/0xd0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? __kasan_check_read+0x11/0x20 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? check_chain_key+0x1df/0x2e0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? lookup_swap_cache+0xd3/0x3c0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: swapin_readahead+0xb9/0x83a Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? exit_swap_address_space+0x160/0x160 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? lookup_swap_cache+0x124/0x3c0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? swp_swap_info+0x8e/0xe0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? swapcache_prepare+0x20/0x20 Sep 5 12:00:52 hp-xl420gen9-01 kernel: do_swap_page+0x64e/0x1410 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? lock_downgrade+0x390/0x390 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? unmap_mapping_range+0x30/0x30 Sep 5 12:00:52 hp-xl420gen9-01 kernel: __handle_mm_fault+0xe0c/0x1a50 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? vmf_insert_mixed_mkwrite+0x20/0x20 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? __kasan_check_read+0x11/0x20 Sep 5 12:00:52 hp-xl420gen9-01 kernel: ? __count_memcg_events+0x56/0x1d0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: handle_mm_fault+0x17f/0x37e Sep 5 12:00:52 hp-xl420gen9-01 kernel: __do_page_fault+0x369/0x630 Sep 5 12:00:52 hp-xl420gen9-01 kernel: do_page_fault+0x50/0x2d3 Sep 5 12:00:52 hp-xl420gen9-01 kernel: page_fault+0x2f/0x40 Sep 5 12:00:52 hp-xl420gen9-01 kernel: RIP: 0033:0x7f89fb1a4b14 Sep 5 12:00:52 hp-xl420gen9-01 kernel: Code: Bad RIP value. Sep 5 12:00:52 hp-xl420gen9-01 kernel: RSP: 002b:00007ffcf7a88148 EFLAGS: 00010206 Sep 5 12:00:52 hp-xl420gen9-01 kernel: RAX: 0000000000000000 RBX: 0000556844dd5db0 RCX: 00007f89fa4bf211 Sep 5 12:00:52 hp-xl420gen9-01 kernel: RDX: 00000000000026f3 RSI: 0000000000000002 RDI: 0000000000000000 Sep 5 12:00:52 hp-xl420gen9-01 kernel: RBP: 0000000000000002 R08: 0000000000000000 R09: 0000556844dc37e0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: R10: 0000556844dc4f20 R11: 0000000000000000 R12: 0000556844d9c720 Sep 5 12:00:52 hp-xl420gen9-01 kernel: R13: 0000000000000000 R14: 00000000000026f3 R15: 0000000000000002 Sep 5 12:00:52 hp-xl420gen9-01 kernel: Mem-Info: Sep 5 12:00:52 hp-xl420gen9-01 kernel: active_anon:112189 inactive_anon:307421 isolated_anon:0#012 active_file:0 inactive_file:1797 isolated_file:0#012 unevictable:984241 dirty:0 writeback:511 unstable:0#012 slab_reclaimable:14317 slab_unreclaimable:498931#012 mapped:27 shmem:0 pagetables:4114 bounce:0#012 free:36874 free_pcp:549 free_cma:0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 0 active_anon:2328kB inactive_anon:434856kB active_file:0kB inactive_file:20kB unevictable:414264kB isolated(anon):0kB isolated(file):0kB mapped:20kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 1 active_anon:448804kB inactive_anon:1107116kB active_file:40kB inactive_file:8440kB unevictable:3200440kB isolated(anon):0kB isolated(file):0kB mapped:2076kB dirty:0kB writeback:2304kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 2353152kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 0 DMA free:15864kB min:12kB low:24kB high:36kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15948kB managed:15864kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: lowmem_reserve[]: 0 1273 7711 7711 7711 Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 0 DMA32 free:26876kB min:1064kB low:2368kB high:3672kB active_anon:0kB inactive_anon:246988kB active_file:4kB inactive_file:4kB unevictable:172kB writepending:0kB present:1821440kB managed:1304560kB mlocked:184kB kernel_stack:288kB pagetables:480kB bounce:0kB free_pcp:28kB local_pcp:0kB free_cma:0kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: lowmem_reserve[]: 0 0 6437 6437 6437 Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 0 Normal free:5792kB min:5392kB low:11980kB high:18568kB active_anon:2572kB inactive_anon:601564kB active_file:0kB inactive_file:4kB unevictable:244kB writepending:0kB present:10485760kB managed:6591660kB mlocked:4kB kernel_stack:7616kB pagetables:3304kB bounce:0kB free_pcp:292kB local_pcp:0kB free_cma:0kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: lowmem_reserve[]: 0 0 0 0 0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 1 Normal free:94492kB min:13024kB low:28948kB high:44872kB active_anon:450828kB inactive_anon:4304996kB active_file:52kB inactive_file:10544kB unevictable:268kB writepending:12kB present:16777216kB managed:15926064kB mlocked:60kB kernel_stack:7744kB pagetables:12672kB bounce:0kB free_pcp:6376kB local_pcp:0kB free_cma:0kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: lowmem_reserve[]: 0 0 0 0 0 Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 0 DMA: 0*4kB 1*8kB (U) 1*16kB (U) 1*32kB (U) 1*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15864kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 0 DMA32: 13*4kB (U) 17*8kB (U) 584*16kB (UMEH) 202*32kB (UMEH) 96*64kB (UMEH) 21*128kB (UMEH) 4*256kB (UM) 0*512kB 1*1024kB (H) 0*2048kB 0*4096kB = 26876kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 0 Normal: 0*4kB 0*8kB 18*16kB (UME) 176*32kB (UM) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 5920kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 1 Normal: 0*4kB 0*8kB 10*16kB (UMEH) 10*32kB (MH) 7*64kB (UMEH) 600*128kB (M) 2082*256kB (UM) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 610720kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: 3936 total pagecache pages Sep 5 12:00:52 hp-xl420gen9-01 kernel: 541 pages in swap cache Sep 5 12:00:52 hp-xl420gen9-01 kernel: Swap cache stats: add 105240923, delete 105250445, find 42196/101577 Sep 5 12:00:52 hp-xl420gen9-01 kernel: Free swap = 16383612kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: Total swap = 16465916kB Sep 5 12:00:52 hp-xl420gen9-01 kernel: 7275091 pages RAM Sep 5 12:00:52 hp-xl420gen9-01 kernel: 0 pages HighMem/MovableOnly Sep 5 12:00:52 hp-xl420gen9-01 kernel: 1315554 pages reserved Sep 5 12:00:52 hp-xl420gen9-01 kernel: 16384 pages cma reserved Sep 5 12:00:52 hp-xl420gen9-01 kernel: Tasks state (memory values in pages): Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 1662] 0 1662 29511 1034 290816 244 0 systemd- journal Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2586] 998 2586 508086 0 368640 1838 0 polkitd Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2587] 0 2587 52786 0 421888 500 0 sssd Sep 5 12:00:52 hp-xl420gen9-01 kernel: [ 2588] 0 2588 31223 0 139264 195 0 irqbalance Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 2589] 81 2589 18381 0 167936 217 -900 dbus- daemon Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 2590] 0 2590 97260 193 372736 573 0 NetworkManager Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 2594] 0 2594 95350 1 229376 758 0 rngd Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 2598] 995 2598 7364 0 94208 103 0 chronyd Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 2629] 0 2629 106234 399 442368 3836 0 tuned Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 2638] 0 2638 23604 0 212992 240 -1000 sshd Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 2642] 0 2642 10392 0 102400 138 0 rhsmcertd Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 2691] 0 2691 21877 0 208896 277 0 systemd- logind Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 2700] 0 2700 3916 0 69632 45 0 agetty Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 2705] 0 2705 23370 0 225280 393 0 systemd Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 2730] 0 2730 37063 0 294912 667 0 (sd-pam) Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 2922] 0 2922 9020 0 98304 232 0 crond Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 3036] 0 3036 37797 1 307200 305 0 sshd Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 3057] 0 3057 37797 0 303104 335 0 sshd Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 3065] 0 3065 6343 1 86016 163 0 bash Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 38249] 0 38249 58330 293 221184 246 0 rsyslogd Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 11329] 0 11329 55131 73 454656 396 0 sssd_nss Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 11331] 0 11331 54424 1 434176 610 0 sssd_be Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 25247] 0 25247 25746 1 212992 300 -1000 systemd-udevd Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 25391] 0 25391 2184 0 65536 32 0 oom01 Sep 5 12:00:53 hp-xl420gen9-01 kernel: [ 25392] 0 25392 2184 0 65536 39 0 oom01 Sep 5 12:00:53 hp-xl420gen9-01 kernel: oom- kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0- 1,global_oom,task_memcg=/system.slice/tuned.service,task=tuned,pid=2629,uid=0 Sep 5 12:00:54 hp-xl420gen9-01 kernel: Out of memory: Killed process 2629 (tuned) total-vm:424936kB, anon-rss:328kB, file-rss:1268kB, shmem-rss:0kB, UID:0 pgtables:442368kB oom_score_adj:0 Sep 5 12:00:54 hp-xl420gen9-01 kernel: oom_reaper: reaped process 2629 (tuned), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB Sep 5 12:00:54 hp-xl420gen9-01 systemd[1]: tuned.service: Main process exited, code=killed, status=9/KILL Sep 5 12:00:54 hp-xl420gen9-01 systemd[1]: tuned.service: Failed with result 'signal'. Sep 5 12:06:32 hp-xl420gen9-01 kernel: oom01 invoked oom-killer: gfp_mask=0x400dc0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), order=0, oom_score_adj=0 Sep 5 12:10:06 hp-xl420gen9-01 kernel: CPU: 35 PID: 25560 Comm: oom01 Not tainted 5.3.0-rc7-next-20190904+ #5 Sep 5 12:10:06 hp-xl420gen9-01 kernel: Hardware name: HP ProLiant XL420 Gen9/ProLiant XL420 Gen9, BIOS U19 12/27/2015 > > Any chance it is https://lkml.org/lkml/2017/7/28/317 ? I am not sure.