From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-f70.google.com (mail-lf0-f70.google.com [209.85.215.70]) by kanga.kvack.org (Postfix) with ESMTP id D307583102 for ; Mon, 29 Aug 2016 10:52:24 -0400 (EDT) Received: by mail-lf0-f70.google.com with SMTP id 33so99737332lfw.1 for ; Mon, 29 Aug 2016 07:52:24 -0700 (PDT) Received: from mo6-p00-ob.smtp.rzone.de (mo6-p00-ob.smtp.rzone.de. [2a01:238:20a:202:5300::5]) by mx.google.com with ESMTPS id gz2si32413566wjc.141.2016.08.29.07.52.23 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 29 Aug 2016 07:52:23 -0700 (PDT) Date: Mon, 29 Aug 2016 16:52:03 +0200 From: Olaf Hering Subject: Re: OOM detection regressions since 4.7 Message-ID: <20160829145203.GA30660@aepfle.de> References: <20160822093249.GA14916@dhcp22.suse.cz> <20160822093707.GG13596@dhcp22.suse.cz> <20160822100528.GB11890@kroah.com> <20160822105441.GH13596@dhcp22.suse.cz> <20160822133114.GA15302@kroah.com> <20160822134227.GM13596@dhcp22.suse.cz> <20160822150517.62dc7cce74f1af6c1f204549@linux-foundation.org> <20160823074339.GB23577@dhcp22.suse.cz> <20160825071103.GC4230@dhcp22.suse.cz> <20160825071728.GA3169@aepfle.de> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="r5Pyd7+fXNt84Ff3" Content-Disposition: inline In-Reply-To: <20160825071728.GA3169@aepfle.de> Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Andrew Morton , Markus Trippelsdorf , Arkadiusz Miskiewicz , Ralf-Peter Rohbeck , Jiri Slaby , Greg KH , Linus Torvalds , Vlastimil Babka , Joonsoo Kim , linux-mm@kvack.org, LKML --r5Pyd7+fXNt84Ff3 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Aug 25, Olaf Hering wrote: > On Thu, Aug 25, Michal Hocko wrote: >=20 > > Any luck with the testing of this patch? I ran rc3 for a few hours on Friday amd FireFox was not killed. Now rc3 is running for a day with the usual workload and FireFox is still running. Today I noticed the nfsserver was disabled, probably since months already. Starting it gives a OOM, not sure if this is new with 4.7+. Full dmesg attached. [ 0.000000] Linux version 4.8.0-rc3-3.bug994066-default (geeko@buildhost= ) (gcc version 6.1.1 20160815 [gcc-6-branch revision 239479] (SUSE Linux) )= #1 SMP PREEMPT Mon Aug 22 14:52:18 UTC 2016 (c0d2ef5) [64378.582489] tun: Universal TUN/TAP device driver, 1.6 [64378.582493] tun: (C) 1999-2004 Max Krasnyansky [93347.645123] RPC: Registered named UNIX socket transport module. [93347.645128] RPC: Registered udp transport module. [93347.645130] RPC: Registered tcp transport module. [93347.645132] RPC: Registered tcp NFSv4.1 backchannel transport module. [93348.227828] Installing knfsd (copyright (C) 1996 okir@monad.swb.de). [93348.306369] modprobe: page allocation failure: order:4, mode:0x26040c0(G= FP_KERNEL|__GFP_COMP|__GFP_NOTRACK) [93348.306379] CPU: 2 PID: 30467 Comm: modprobe Not tainted 4.8.0-rc3-3.bug= 994066-default #1 [93348.306382] Hardware name: Hewlett-Packard HP ProBook 6555b/1455, BIOS 6= 8DTM Ver. F.21 06/14/2012 [93348.306386] 0000000000000000 ffffffff813a2952 0000000000000004 ffff8800= 3fb6ba30 [93348.306394] ffffffff81198a4b 026040c00000000f 026040c000000001 ffff8800= 3fb6c000 [93348.306400] 0000000000000004 ffff88003fb6baac 00000000026040c0 00000000= 00000040 [93348.306406] Call Trace: [93348.306437] [] dump_trace+0x5e/0x310 [93348.306449] [] show_stack_log_lvl+0x11b/0x1a0 [93348.306459] [] show_stack+0x21/0x40 [93348.306468] [] dump_stack+0x5c/0x7a [93348.306478] [] warn_alloc_failed+0xdb/0x150 [93348.306490] [] __alloc_pages_slowpath+0x1af/0xa10 [93348.306501] [] __alloc_pages_nodemask+0x250/0x290 [93348.306511] [] cache_grow_begin+0x8d/0x540 [93348.306520] [] fallback_alloc+0x161/0x200 [93348.306530] [] __kmalloc+0x1d2/0x570 [93348.306589] [] nfsd_reply_cache_init+0xaa/0x110 [nfsd] [93348.306649] [] init_nfsd+0x56/0xea0 [nfsd] [93348.306664] [] do_one_initcall+0x4b/0x180 [93348.306674] [] do_init_module+0x5b/0x1fe [93348.306684] [] load_module+0x1a75/0x1d00 [93348.306695] [] SYSC_finit_module+0xa4/0xe0 [93348.306705] [] entry_SYSCALL_64_fastpath+0x1e/0xa8 [93348.313626] DWARF2 unwinder stuck at entry_SYSCALL_64_fastpath+0x1e/0xa8 [93348.313629] Leftover inexact backtrace: [93348.313691] Mem-Info: [93348.313704] active_anon:467209 inactive_anon:125491 isolated_anon:0 active_file:264880 inactive_file:166389 isolated_file:0 unevictable:8 dirty:250 writeback:0 unstable:0 slab_reclaimable:796425 slab_unreclaimable:34803 mapped:54783 shmem:24119 pagetables:9083 bounce:0 free:51321 free_pcp:68 free_cma:0 [93348.313717] Node 0 active_anon:1868836kB inactive_anon:501964kB active_f= ile:1059520kB inactive_file:665556kB unevictable:32kB isolated(anon):0kB is= olated(file):0kB mapped:219132kB dirty:1000kB writeback:0kB shmem:0kB shmem= _thp: 0kB shmem_pmdmapped: 749568kB anon_thp: 96476kB writeback_tmp:0kB uns= table:0kB pages_scanned:24 all_unreclaimable? no [93348.313719] Node 0 DMA free:15908kB min:136kB low:168kB high:200kB activ= e_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:= 0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB slab_recla= imable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0k= B free_pcp:0kB local_pcp:0kB free_cma:0kB [93348.313729] lowmem_reserve[]: 0 2626 7621 7621 7621 [93348.313745] Node 0 DMA32 free:133192kB min:23244kB low:29052kB high:3486= 0kB active_anon:642152kB inactive_anon:119848kB active_file:257900kB inacti= ve_file:116560kB unevictable:0kB writepending:292kB present:2847412kB manag= ed:2766832kB mlocked:0kB slab_reclaimable:1418576kB slab_unreclaimable:3900= 4kB kernel_stack:256kB pagetables:1448kB bounce:0kB free_pcp:128kB local_pc= p:0kB free_cma:0kB [93348.313755] lowmem_reserve[]: 0 0 4994 4994 4994 [93348.313762] Node 0 Normal free:56184kB min:44200kB low:55248kB high:6629= 6kB active_anon:1226576kB inactive_anon:382200kB active_file:801508kB inact= ive_file:548992kB unevictable:32kB writepending:536kB present:5242880kB man= aged:5114880kB mlocked:32kB slab_reclaimable:1767124kB slab_unreclaimable:1= 00208kB kernel_stack:9104kB pagetables:34884kB bounce:0kB free_pcp:144kB lo= cal_pcp:0kB free_cma:0kB [93348.313771] lowmem_reserve[]: 0 0 0 0 0 [93348.313778] Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*1= 28kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) =3D 159= 08kB [93348.313803] Node 0 DMA32: 13633*4kB (UME) 8035*8kB (UME) 890*16kB (UME) = 10*32kB (U) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB =3D 1= 33372kB [93348.313822] Node 0 Normal: 14003*4kB (UME) 25*8kB (UME) 2*16kB (UM) 0*32= kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB =3D 56244kB [93348.313843] Node 0 hugepages_total=3D0 hugepages_free=3D0 hugepages_surp= =3D0 hugepages_size=3D1048576kB [93348.313846] Node 0 hugepages_total=3D0 hugepages_free=3D0 hugepages_surp= =3D0 hugepages_size=3D2048kB [93348.313848] 457622 total pagecache pages [93348.313850] 2194 pages in swap cache [93348.313853] Swap cache stats: add 60025, delete 57831, find 17283/19516 [93348.313854] Free swap =3D 8170356kB [93348.313856] Total swap =3D 8384508kB [93348.313858] 2026571 pages RAM [93348.313859] 0 pages HighMem/MovableOnly [93348.313860] 52166 pages reserved [93348.313861] 0 pages hwpoisoned [93348.313865] nfsd: failed to allocate reply cache Olaf --r5Pyd7+fXNt84Ff3 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEARECAAYFAlfETAgACgkQXUKg+qaYNn64UgCgp6crqzc56pYUBuKJAJ2UD/lU wskAmwV73qidoKukC/59OYYf7H7k1COe =KS7/ -----END PGP SIGNATURE----- --r5Pyd7+fXNt84Ff3-- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. 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