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[209.85.220.41]) by mx.google.com with SMTPS id s13sor40696496vsj.55.2019.08.03.06.24.00 for (Google Transport Security); Sat, 03 Aug 2019 06:24:00 -0700 (PDT) Received-SPF: pass (google.com: domain of pankajssuryawanshi@gmail.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=Wbb+yHp4; spf=pass (google.com: domain of pankajssuryawanshi@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=pankajssuryawanshi@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to:cc; bh=XRknL6gLsu0CLHkKHaKrKviVONrEjXZLcmQ3mksL63s=; b=Wbb+yHp4or2bB3RKikmazO7TFS1lnw3OofzAISbEjVdI9MMhvaDuj/hRWaPHvSOjj5 ZsOY4I8KsxJpNznlyNuImbYoHUOR95/oI5633Q+1xUVwIAyNR2lyOEF7yFouW2RJGZz1 YJ3F85oiIGskFmU/V5Jp7/rMnmbkYtCsSmMEfn4Clc6VR8Vr1DB4T/TYbTbRv4+4qyIi evoVrgDIHj+XDmzS0LsU/g8VoY9JSIWEy+klQFCWS9wrbMeVKxxvBZPu0AMpQ7rhwgcM jTkeI+QwOjIeuKdTqw6tsEjEIF3tBynXFb3Drfo7F5JI7QZdPZug3rIBLmdYQj3pM5W0 zapQ== X-Google-Smtp-Source: APXvYqyS1mD54WpWG+O39IJCcMXk3wXFjNEn74idqUQiN05w5v+UhgHHtQhokjDEAVxoIVQa1wfgY70gwNtFULUj6+I= X-Received: by 2002:a67:d894:: with SMTP id f20mr92418638vsj.55.1564838640036; Sat, 03 Aug 2019 06:24:00 -0700 (PDT) MIME-Version: 1.0 From: Pankaj Suryawanshi Date: Sat, 3 Aug 2019 18:53:50 +0530 Message-ID: Subject: oom-killer To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: pankaj.suryawanshi@einfochips.com Content-Type: multipart/alternative; boundary="000000000000452ec5058f3663e2" X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: --000000000000452ec5058f3663e2 Content-Type: text/plain; charset="UTF-8" Hello, Below are the logs from oom-kller. I am not able to interpret/decode the logs as well as not able to find root cause of oom-killer. Note: CPU Arch: Arm 32-bit , Kernel - 4.14.65 [ 727.941258] kworker/u8:2 invoked oom-killer: gfp_mask=0x15080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), nodemask=(null), order=1, oom_score_adj=0 [ 727.954355] CPU: 0 PID: 56 Comm: kworker/u8:2 Tainted: P O 4.14.65 #606 [ 727.962450] Hardware name: Android (Flattened Device Tree) [ 727.968812] Workqueue: events_unbound call_usermodehelper_exec_work [ 727.975076] Backtrace: [ 727.977528] [] (dump_backtrace) from [] (show_stack+0x18/0x1c) [ 727.985096] r6:600f0113 r5:c141c0dc r4:00000000 r3:cf08b34d [ 727.990755] [] (show_stack) from [] (dump_stack+0x94/0xa8) [ 727.997979] [] (dump_stack) from [] (dump_header+0xa0/0x20c) [ 728.005372] r6:dd347d7c r5:dd347d7c r4:d5737080 r3:cf08b34d [ 728.011030] [] (dump_header) from [] (oom_kill_process+0x424/0x534) [ 728.019033] r10:00000001 r9:c12169bc r8:00000392 r7:c0e08d5c r6:dd347d7c r5:d5737080 [ 728.026856] r4:d57375f8 [ 728.029390] [] (oom_kill_process) from [] (out_of_memory+0x140/0x368) [ 728.037569] r10:00000001 r9:c12169bc r8:00000041 r7:c121e680 r6:c1216588 r5:dd347d7c [ 728.045392] r4:d5737080 [ 728.047929] [] (out_of_memory) from [] (__alloc_pages_nodemask+0x1178/0x124c) [ 728.056798] r7:c141e7d0 r6:c12166a4 r5:00000000 r4:00001155 [ 728.062460] [] (__alloc_pages_nodemask) from [] (copy_process.part.5+0x114/0x1a28) [ 728.071764] r10:00000000 r9:dd358000 r8:00000000 r7:c1447e08 r6:c1216588 r5:00808111 [ 728.079587] r4:d1063c00 [ 728.082119] [] (copy_process.part.5) from [] (_do_fork+0xd0/0x464) [ 728.090034] r10:00000000 r9:00000000 r8:dd008400 r7:00000000 r6:c1216588 r5:d2d58ac0 [ 728.097857] r4:00808111 [ 728.100388] [] (_do_fork) from [] (kernel_thread+0x38/0x40) [ 728.107696] r10:00000000 r9:c1422594 r8:dd008400 r7:00000000 r6:dd004500 r5:d2d58ac0 [ 728.115519] r4:c1216588 [ 728.118055] [] (kernel_thread) from [] (call_usermodehelper_exec_work+0x44/0xe0) [ 728.127188] [] (call_usermodehelper_exec_work) from [] (process_one_work+0x154/0x518) [ 728.136756] r5:d2d58ac0 r4:dd234100 [ 728.140335] [] (process_one_work) from [] (worker_thread+0x58/0x56c) [ 728.148424] r10:00000088 r9:dd234100 r8:dd234118 r7:c120f900 r6:dd346038 r5:dd008424 [ 728.156247] r4:dd008400 [ 728.158780] [] (worker_thread) from [] (kthread+0x134/0x164) [ 728.166174] r10:dd233e68 r9:dd2341a8 r8:c023d44c r7:dd234100 r6:dd236280 r5:00000000 [ 728.173997] r4:dd234180 [ 728.176531] [] (kthread) from [] (ret_from_fork+0x14/0x3c) [ 728.183752] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0244064 [ 728.191575] r4:dd236280 r3:00000000 [ 728.199092] Mem-Info: [ 728.201407] active_anon:97307 inactive_anon:124 isolated_anon:0 [ 728.201407] active_file:583 inactive_file:575 isolated_file:64 [ 728.201407] unevictable:638 dirty:0 writeback:0 unstable:0 [ 728.201407] slab_reclaimable:4681 slab_unreclaimable:7808 [ 728.201407] mapped:1656 shmem:182 pagetables:4482 bounce:0 [ 728.201407] free:143605 free_pcp:230 free_cma:139244 [ 728.235525] Node 0 active_anon:389228kB inactive_anon:496kB active_file:2072kB inactive_file:2456kB unevictable:2552kB isolated(anon):0kB isolated(file):0kB mapped:5984kB dirty:0kB writeback:0kB shmem:728kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [ 728.260031] DMA free:17960kB min:16384kB low:25664kB high:29760kB active_anon:3556kB inactive_anon:0kB active_file:280kB inactive_file:28kB unevictable:0kB writepending:0kB present:458752kB managed:422896kB mlocked:0kB kernel_stack:6496kB pagetables:9904kB bounce:0kB free_pcp:348kB local_pcp:0kB free_cma:0kB [ 728.287402] lowmem_reserve[]: 0 0 579 579 [ 728.292470] HighMem free:553472kB min:512kB low:34024kB high:48808kB active_anon:385672kB inactive_anon:496kB active_file:1820kB inactive_file:5284kB unevictable:2552kB writepending:0kB present:1526784kB managed:1526784kB mlocked:2552kB kernel_stack:0kB pagetables:7272kB bounce:0kB free_pcp:324kB local_pcp:0kB free_cma:553588kB [ 728.322946] lowmem_reserve[]: 0 0 0 0 [ 728.326634] DMA: 71*4kB (EH) 113*8kB (UH) 207*16kB (UMH) 103*32kB (UMH) 70*64kB (UMH) 27*128kB (UMH) 5*256kB (UMH) 1*512kB (H) 0*1024kB 0*2048kB 0*4096kB 0*8192kB 0*16384kB = 17524kB [ 728.344398] HighMem: 8121*4kB (C) 7772*8kB (C) 4391*16kB (C) 2354*32kB (C) 1335*64kB (C) 514*128kB (C) 162*256kB (C) 76*512kB (C) 27*1024kB (C) 12*2048kB (C) 2*4096kB (C) 2*8192kB (C) 0*16384kB = 548660kB [ 728.364376] 3561 total pagecache pages [ 728.368825] 0 pages in swap cache [ 728.372226] Swap cache stats: add 0, delete 0, find 0/0 [ 728.379273] Free swap = 0kB [ 728.382256] Total swap = 0kB [ 728.385418] 496384 pages RAM [ 728.388337] 381696 pages HighMem/MovableOnly [ 728.393901] 8964 pages reserved [ 728.397087] 233472 pages cma reserved I have sufficient memory is available as per logs, and in logs it requires order = 1 ? Then why oom-killer triggered ? What is 71*4kB (EH) , (UMH) , (UH) and (C) ? Regards, Pankaj --000000000000452ec5058f3663e2 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hello,

Below are the logs from oom-kller. I am not = able to interpret/decode the logs as well as not able to find root cause of= oom-killer.

Note: CPU Arch: Arm 32-bit , Kernel - 4.14.65

[ = =C2=A0727.941258] kworker/u8:2 invoked oom-killer: gfp_mask=3D0x15080c0(GFP= _KERNEL_ACCOUNT|__GFP_ZERO), nodemask=3D(null), =C2=A0order=3D1, oom_score_= adj=3D0
[ =C2=A0727.954355] CPU: 0 PID: 56 Comm: kworker/u8:2 Tainted: P= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 O =C2=A0 =C2=A04.14.65 #606
[ =C2=A0= 727.962450] Hardware name: Android (Flattened Device Tree)
[ =C2=A0727.9= 68812] Workqueue: events_unbound call_usermodehelper_exec_work
[ =C2=A07= 27.975076] Backtrace:
[ =C2=A0727.977528] [<c020dbec>] (dump_backt= race) from [<c020ded4>] (show_stack+0x18/0x1c)
[ =C2=A0727.985096]= =C2=A0r6:600f0113 r5:c141c0dc r4:00000000 r3:cf08b34d
[ =C2=A0727.99075= 5] [<c020debc>] (show_stack) from [<c0ba8cf0>] (dump_stack+0x94= /0xa8)
[ =C2=A0727.997979] [<c0ba8c5c>] (dump_stack) from [<c03= 4b284>] (dump_header+0xa0/0x20c)
[ =C2=A0728.005372] =C2=A0r6:dd347d7= c r5:dd347d7c r4:d5737080 r3:cf08b34d
[ =C2=A0728.011030] [<c034b1e4&= gt;] (dump_header) from [<c034a4b8>] (oom_kill_process+0x424/0x534)[ =C2=A0728.019033] =C2=A0r10:00000001 r9:c12169bc r8:00000392 r7:c0e08d5= c r6:dd347d7c r5:d5737080
[ =C2=A0728.026856] =C2=A0r4:d57375f8
[ =C2= =A0728.029390] [<c034a094>] (oom_kill_process) from [<c034af24>= ] (out_of_memory+0x140/0x368)
[ =C2=A0728.037569] =C2=A0r10:00000001 r9:= c12169bc r8:00000041 r7:c121e680 r6:c1216588 r5:dd347d7c
[ =C2=A0728.045= 392] =C2=A0r4:d5737080
[ =C2=A0728.047929] [<c034ade4>] (out_of_me= mory) from [<c03519ac>] (__alloc_pages_nodemask+0x1178/0x124c)
[ = =C2=A0728.056798] =C2=A0r7:c141e7d0 r6:c12166a4 r5:00000000 r4:00001155
= [ =C2=A0728.062460] [<c0350834>] (__alloc_pages_nodemask) from [<c= 021e9d4>] (copy_process.part.5+0x114/0x1a28)
[ =C2=A0728.071764] =C2= =A0r10:00000000 r9:dd358000 r8:00000000 r7:c1447e08 r6:c1216588 r5:00808111=
[ =C2=A0728.079587] =C2=A0r4:d1063c00
[ =C2=A0728.082119] [<c021e= 8c0>] (copy_process.part.5) from [<c0220470>] (_do_fork+0xd0/0x464= )
[ =C2=A0728.090034] =C2=A0r10:00000000 r9:00000000 r8:dd008400 r7:0000= 0000 r6:c1216588 r5:d2d58ac0
[ =C2=A0728.097857] =C2=A0r4:00808111
[ = =C2=A0728.100388] [<c02203a0>] (_do_fork) from [<c0220864>] (ke= rnel_thread+0x38/0x40)
[ =C2=A0728.107696] =C2=A0r10:00000000 r9:c142259= 4 r8:dd008400 r7:00000000 r6:dd004500 r5:d2d58ac0
[ =C2=A0728.115519] = =C2=A0r4:c1216588
[ =C2=A0728.118055] [<c022082c>] (kernel_thread)= from [<c0239a74>] (call_usermodehelper_exec_work+0x44/0xe0)
[ =C2= =A0728.127188] [<c0239a30>] (call_usermodehelper_exec_work) from [<= ;c023d088>] (process_one_work+0x154/0x518)
[ =C2=A0728.136756] =C2=A0= r5:d2d58ac0 r4:dd234100
[ =C2=A0728.140335] [<c023cf34>] (process_= one_work) from [<c023d4a4>] (worker_thread+0x58/0x56c)
[ =C2=A0728= .148424] =C2=A0r10:00000088 r9:dd234100 r8:dd234118 r7:c120f900 r6:dd346038= r5:dd008424
[ =C2=A0728.156247] =C2=A0r4:dd008400
[ =C2=A0728.158780= ] [<c023d44c>] (worker_thread) from [<c0244198>] (kthread+0x134= /0x164)
[ =C2=A0728.166174] =C2=A0r10:dd233e68 r9:dd2341a8 r8:c023d44c r= 7:dd234100 r6:dd236280 r5:00000000
[ =C2=A0728.173997] =C2=A0r4:dd234180=
[ =C2=A0728.176531] [<c0244064>] (kthread) from [<c0209258>= ] (ret_from_fork+0x14/0x3c)
[ =C2=A0728.183752] =C2=A0r10:00000000 r9:00= 000000 r8:00000000 r7:00000000 r6:00000000 r5:c0244064
[ =C2=A0728.19157= 5] =C2=A0r4:dd236280 r3:00000000
[ =C2=A0728.199092] Mem-Info:
[ =C2= =A0728.201407] active_anon:97307 inactive_anon:124 isolated_anon:0
[ =C2= =A0728.201407] =C2=A0active_file:583 inactive_file:575 isolated_file:64
= [ =C2=A0728.201407] =C2=A0unevictable:638 dirty:0 writeback:0 unstable:0[ =C2=A0728.201407] =C2=A0slab_reclaimable:4681 slab_unreclaimable:7808[ =C2=A0728.201407] =C2=A0mapped:1656 shmem:182 pagetables:4482 bounce:0[ =C2=A0728.201407] =C2=A0free:143605 free_pcp:230 free_cma:139244
[ = =C2=A0728.235525] Node 0 active_anon:389228kB inactive_anon:496kB active_fi= le:2072kB inactive_file:2456kB unevictable:2552kB isolated(anon):0kB isolat= ed(file):0kB mapped:5984kB dirty:0kB writeback:0kB shmem:728kB writeback_tm= p:0kB unstable:0kB all_unreclaimable? no
[ =C2=A0728.260031] DMA free:17= 960kB min:16384kB low:25664kB high:29760kB active_anon:3556kB inactive_anon= :0kB active_file:280kB inactive_file:28kB unevictable:0kB writepending:0kB = present:458752kB managed:422896kB mlocked:0kB kernel_stack:6496kB pagetable= s:9904kB bounce:0kB free_pcp:348kB local_pcp:0kB free_cma:0kB
[ =C2=A072= 8.287402] lowmem_reserve[]: 0 0 579 579
[ =C2=A0728.292470] HighMem free= :553472kB min:512kB low:34024kB high:48808kB active_anon:385672kB inactive_= anon:496kB active_file:1820kB inactive_file:5284kB unevictable:2552kB write= pending:0kB present:1526784kB managed:1526784kB mlocked:2552kB kernel_stack= :0kB pagetables:7272kB bounce:0kB free_pcp:324kB local_pcp:0kB free_cma:553= 588kB
[ =C2=A0728.322946] lowmem_reserve[]: 0 0 0 0
[ =C2=A0728.32663= 4] DMA: 71*4kB (EH) 113*8kB (UH) 207*16kB (UMH) 103*32kB (UMH) 70*64kB (UMH= ) 27*128kB (UMH) 5*256kB (UMH) 1*512kB (H) 0*1024kB 0*2048kB 0*4096kB 0*819= 2kB 0*16384kB =3D 17524kB
[ =C2=A0728.344398] HighMem: 8121*4kB (C) 7772= *8kB (C) 4391*16kB (C) 2354*32kB (C) 1335*64kB (C) 514*128kB (C) 162*256kB = (C) 76*512kB (C) 27*1024kB (C) 12*2048kB (C) 2*4096kB (C) 2*8192kB (C) 0*16= 384kB =3D 548660kB
[ =C2=A0728.364376] 3561 total pagecache pages
[ = =C2=A0728.368825] 0 pages in swap cache
[ =C2=A0728.372226] Swap cache s= tats: add 0, delete 0, find 0/0
[ =C2=A0728.379273] Free swap =C2=A0=3D = 0kB
[ =C2=A0728.382256] Total swap =3D 0kB
[ =C2=A0728.385418] 496384= pages RAM
[ =C2=A0728.388337] 381696 pages HighMem/MovableOnly
[ =C2= =A0728.393901] 8964 pages reserved
[ =C2=A0728.397087] 233472 pages cma = reserved


I have sufficient memory is available as per logs, and = in logs it requires order =3D 1 ?
Then why oom-killer triggered ?
What is =C2=A071*4kB (EH) , (UMH) , (UH) and (C) ?

Rega= rds,
Pankaj


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