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[Bug 1319244] Re: iostat: Cannot open /proc/stat: Cannot allocate memory

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Stephane Bakhos <sbakhos@xxxxxxxxxxxxx>
Date: Wed, 14 May 2014 17:27:41 -0000
Reply-to: Bug 1319244 <1319244@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
The main use of the system is as a QEMU/KVM host, with currently 14 VMs
running and some other processes.

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https://bugs.launchpad.net/bugs/1319244

Title:
  iostat: Cannot open /proc/stat: Cannot allocate memory

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Intermitently I get errors stating that various programs cannot
  allocate memory when reading /proc/stat

  I have 2 servers that are affected by the issue.
  Probably a duplicate of 1226172

  [1764593.455329] top: page allocation failure: order:4, mode:0x1040d0
  [1764593.455335] CPU: 3 PID: 10323 Comm: top Tainted: GF          O 3.11.0-18-generic #32-Ubuntu
  [1764593.455338] Hardware name: Intel Corporation S2400SC/S2400SC, BIOS SE5C600.86B.02.02.0002.122320131210 12/23/2013
  [1764593.455340]  0000000000000000 ffff88042670b9d0 ffffffff816e8571 00000000001040d0
  [1764593.455345]  ffff88042670ba58 ffffffff81144ae0 00000000ffffffff ffff880a3fffcb48
  [1764593.455348]  000000000000000e ffff88042670ba28 ffffffff00000040 0000000000000007
  [1764593.455351] Call Trace:
  [1764593.455361]  [<ffffffff816e8571>] dump_stack+0x45/0x56
  [1764593.455367]  [<ffffffff81144ae0>] warn_alloc_failed+0xf0/0x140
  [1764593.455371]  [<ffffffff81148a15>] __alloc_pages_nodemask+0x725/0x920
  [1764593.455376]  [<ffffffff81184589>] alloc_pages_current+0xa9/0x160
  [1764593.455379]  [<ffffffff81143bfe>] __get_free_pages+0xe/0x50
  [1764593.455384]  [<ffffffff8118d75e>] kmalloc_order_trace+0x2e/0xa0
  [1764593.455388]  [<ffffffff811c9960>] ? single_open+0xb0/0xb0
  [1764593.455391]  [<ffffffff8118ee19>] __kmalloc+0x159/0x180
  [1764593.455393]  [<ffffffff811c9960>] ? single_open+0xb0/0xb0
  [1764593.455398]  [<ffffffff81213c10>] stat_open+0x50/0xc0
  [1764593.455401]  [<ffffffff8120a700>] proc_reg_open+0x70/0x110
  [1764593.455405]  [<ffffffff811a5d4b>] do_dentry_open+0x1eb/0x280
  [1764593.455408]  [<ffffffff8120a690>] ? proc_reg_release+0x70/0x70
  [1764593.455411]  [<ffffffff811a5e69>] vfs_open+0x49/0x50
  [1764593.455415]  [<ffffffff811b5e13>] do_last+0x1c3/0xe50
  [1764593.455418]  [<ffffffff8118e5d8>] ? kmem_cache_alloc_trace+0x108/0x130
  [1764593.455421]  [<ffffffff811b6b61>] path_openat+0xc1/0x630
  [1764593.455426]  [<ffffffff811689d9>] ? handle_mm_fault+0x299/0x670
  [1764593.455429]  [<ffffffff811b7eda>] do_filp_open+0x3a/0x90
  [1764593.455433]  [<ffffffff816ef78e>] ? _raw_spin_lock+0xe/0x20
  [1764593.455437]  [<ffffffff811c4847>] ? __alloc_fd+0xa7/0x130
  [1764593.455440]  [<ffffffff811a704c>] do_sys_open+0x12c/0x270
  [1764593.455445]  [<ffffffff81074989>] ? __set_current_blocked+0x49/0x60
  [1764593.455448]  [<ffffffff811a71ae>] SyS_open+0x1e/0x20
  [1764593.455452]  [<ffffffff816f841d>] system_call_fastpath+0x1a/0x1f
  [1764593.455454] Mem-Info:
  [1764593.455455] Node 0 DMA per-cpu:
  [1764593.455458] CPU    0: hi:    0, btch:   1 usd:   0
  [1764593.455459] CPU    1: hi:    0, btch:   1 usd:   0
  [1764593.455461] CPU    2: hi:    0, btch:   1 usd:   0
  [1764593.455462] CPU    3: hi:    0, btch:   1 usd:   0
  [1764593.455463] CPU    4: hi:    0, btch:   1 usd:   0
  [1764593.455465] CPU    5: hi:    0, btch:   1 usd:   0
  [1764593.455466] CPU    6: hi:    0, btch:   1 usd:   0
  [1764593.455468] CPU    7: hi:    0, btch:   1 usd:   0
  [1764593.455469] Node 0 DMA32 per-cpu:
  [1764593.455471] CPU    0: hi:  186, btch:  31 usd:   0
  [1764593.455472] CPU    1: hi:  186, btch:  31 usd:   0
  [1764593.455474] CPU    2: hi:  186, btch:  31 usd:   0
  [1764593.455475] CPU    3: hi:  186, btch:  31 usd:   0
  [1764593.455477] CPU    4: hi:  186, btch:  31 usd:   0
  [1764593.455478] CPU    5: hi:  186, btch:  31 usd:   0
  [1764593.455480] CPU    6: hi:  186, btch:  31 usd:   0
  [1764593.455481] CPU    7: hi:  186, btch:  31 usd:   0
  [1764593.455482] Node 0 Normal per-cpu:
  [1764593.455484] CPU    0: hi:  186, btch:  31 usd:   0
  [1764593.455485] CPU    1: hi:  186, btch:  31 usd:   0
  [1764593.455487] CPU    2: hi:  186, btch:  31 usd:   0
  [1764593.455488] CPU    3: hi:  186, btch:  31 usd:   0
  [1764593.455490] CPU    4: hi:  186, btch:  31 usd:   0
  [1764593.455491] CPU    5: hi:  186, btch:  31 usd:   0
  [1764593.455492] CPU    6: hi:  186, btch:  31 usd:   0
  [1764593.455494] CPU    7: hi:  186, btch:  31 usd:   0
  [1764593.455495] Node 1 Normal per-cpu:
  [1764593.455497] CPU    0: hi:  186, btch:  31 usd:   0
  [1764593.455498] CPU    1: hi:  186, btch:  31 usd:   0
  [1764593.455500] CPU    2: hi:  186, btch:  31 usd:   0
  [1764593.455501] CPU    3: hi:  186, btch:  31 usd:   0
  [1764593.455503] CPU    4: hi:  186, btch:  31 usd:   0
  [1764593.455504] CPU    5: hi:  186, btch:  31 usd:  30
  [1764593.455505] CPU    6: hi:  186, btch:  31 usd:   0
  [1764593.455507] CPU    7: hi:  186, btch:  31 usd:   0
  [1764593.455511] active_anon:4739030 inactive_anon:2482840 isolated_anon:0
  [1764593.455511]  active_file:6228818 inactive_file:5945293 isolated_file:0
  [1764593.455511]  unevictable:1459 dirty:61 writeback:0 unstable:0
  [1764593.455511]  free:318692 slab_reclaimable:462577 slab_unreclaimable:149699
  [1764593.455511]  mapped:25851 shmem:2934 pagetables:27313 bounce:0
  [1764593.455511]  free_cma:0
  [1764593.455514] Node 0 DMA free:15848kB min:16kB low:20kB high:24kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15932kB managed:15848kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
  [1764593.455519] lowmem_reserve[]: 0 2897 40132 40132
  [1764593.455523] Node 0 DMA32 free:505356kB min:3244kB low:4052kB high:4864kB active_anon:682760kB inactive_anon:959288kB active_file:336884kB inactive_file:205164kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3049268kB managed:2970684kB mlocked:0kB dirty:0kB writeback:0kB mapped:2720kB shmem:8kB slab_reclaimable:261396kB slab_unreclaimable:16056kB kernel_stack:120kB pagetables:952kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
  [1764593.455527] lowmem_reserve[]: 0 0 37234 37234
  [1764593.455530] Node 0 Normal free:615816kB min:41704kB low:52128kB high:62556kB active_anon:11679740kB inactive_anon:6085128kB active_file:9771528kB inactive_file:8399428kB unevictable:3380kB isolated(anon):0kB isolated(file):0kB present:38797312kB managed:38127692kB mlocked:3380kB dirty:192kB writeback:0kB mapped:29824kB shmem:5620kB slab_reclaimable:724768kB slab_unreclaimable:205508kB kernel_stack:8296kB pagetables:66784kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
  [1764593.455535] lowmem_reserve[]: 0 0 0 0
  [1764593.455538] Node 1 Normal free:137748kB min:45144kB low:56428kB high:67716kB active_anon:6593620kB inactive_anon:2886944kB active_file:14806860kB inactive_file:15176580kB unevictable:2456kB isolated(anon):0kB isolated(file):0kB present:41943040kB managed:41273172kB mlocked:2456kB dirty:52kB writeback:0kB mapped:70860kB shmem:6108kB slab_reclaimable:864144kB slab_unreclaimable:377232kB kernel_stack:2912kB pagetables:41516kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
  [1764593.455543] lowmem_reserve[]: 0 0 0 0
  [1764593.455545] Node 0 DMA: 0*4kB 1*8kB (U) 0*16kB 1*32kB (U) 1*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (R) 3*4096kB (M) = 15848kB
  [1764593.455557] Node 0 DMA32: 70707*4kB (UEMR) 17882*8kB (UEMR) 4937*16kB (UEMR) 13*32kB (UEMR) 2*64kB (R) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 505420kB
  [1764593.455567] Node 0 Normal: 137539*4kB (UEM) 7098*8kB (UEM) 252*16kB (UEMR) 23*32kB (UMR) 10*64kB (UMR) 13*128kB (UER) 5*256kB (UER) 1*512kB (R) 1*1024kB (R) 0*2048kB 0*4096kB = 616828kB
  [1764593.455578] Node 1 Normal: 33118*4kB (UEM) 505*8kB (UEM) 39*16kB (UEM) 27*32kB (UEM) 7*64kB (M) 2*128kB (M) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 138704kB
  [1764593.455589] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
  [1764593.455591] Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
  [1764593.455592] 13157020 total pagecache pages
  [1764593.455593] 979097 pages in swap cache
  [1764593.455595] Swap cache stats: add 13258848, delete 12279729, find 15382022/16560210
  [1764593.455596] Free swap  = 45316860kB
  [1764593.455597] Total swap = 56722668kB
  [1764593.597232] wcaxx 0000:08:00.0: Underrun detected by hardware. Latency at max of 20ms.
  [1764593.766212] wcaxx 0000:08:00.0: Underrun detected by hardware. Latency at max of 20ms.
  [1764593.766286] 20971519 pages RAM
  [1764593.766287] 374670 pages reserved
  [1764593.766289] 10669900 pages shared
  [1764593.766290] 11731430 pages non-shared

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image 3.11.0.20.21
  ProcVersionSignature: Ubuntu 3.11.0-18.32-generic 3.11.10.4
  Uname: Linux 3.11.0-18-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: [Errno 2] No such file or directory: 'iw'
  Date: Wed May 14 00:12:36 2014
  HibernationDevice: RESUME=UUID=d678f2d9-0912-4fe6-97ca-e1685a5b5c8e
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
  MachineType: Intel Corporation S2400SC
  MarkForUpload: True
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-18-generic root=UUID=0e0470c8-fe13-4b7f-ace7-e59d91e04b07 ro
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-18-generic N/A
   linux-backports-modules-3.11.0-18-generic  N/A
   linux-firmware                             1.116.2
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: Upgraded to saucy on 2013-11-12 (182 days ago)
  dmi.bios.date: 12/23/2013
  dmi.bios.vendor: Intel Corp.
  dmi.bios.version: SE5C600.86B.02.02.0002.122320131210
  dmi.board.asset.tag: ....................
  dmi.board.name: S2400SC
  dmi.board.vendor: Intel Corporation
  dmi.board.version: G18552-403
  dmi.chassis.asset.tag: ....................
  dmi.chassis.type: 23
  dmi.chassis.vendor: ...............................
  dmi.chassis.version: p4308cpmhen
  dmi.modalias: dmi:bvnIntelCorp.:bvrSE5C600.86B.02.02.0002.122320131210:bd12/23/2013:svnIntelCorporation:pnS2400SC:pvr....................:rvnIntelCorporation:rnS2400SC:rvrG18552-403:cvn...............................:ct23:cvrp4308cpmhen:
  dmi.product.name: S2400SC
  dmi.product.version: ....................
  dmi.sys.vendor: Intel Corporation

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References

[Bug 1319244] [NEW] iostat: Cannot open /proc/stat: Cannot allocate memory
From: Stephane Bakhos, 2014-05-14