Re: [RFC PATCH] mm, oom: disable dump_tasks by default

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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.





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