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[Xen-users] xen-4.8 qemu-system-i386 memory lake?


Hi All,

I have a problem,

I'm using the xen-4.8 in debian strech and qemu-system-x86,
but I after start my domU, the qemu reserved memory growing steadily.
The first time is 365MB, after 1hour is 796MB, after that more.

my VM config:
builder = "hvm"
device_model_version="qemu-xen"
pae = 1
memory = 8196
vcpus = 4
stdvga = 1
videoram = 16
shadow_memory = 8
name = "win2k8r2"
vif = [
        'bridge=br1, mac=00:16:3E:01:01:01, model=e1000',
      ]
acpi = 1
apic = 1
disk = [
         'phy:/dev/vg0/win2k8r2-system,hda,rw',
       ]
xen_platform_pci = 1
on_poweroff = 'destroy'
on_reboot   = 'restart'
on_crash    = 'restart'
on_xend_stop  = 'shutdown'
boot = "dc"
sdl = 0
usbdevice = 'tablet'
keymap = 'hu'
serial = 'pty'
vnc = 0
localtime=1


A few hours later, the domeU is crash!

What is the problem?

Thank you for the answers.

The syslog is:
Oct 2 17:47:58 xensystem kernel: [85363.583558] vif vif-5-0 vif5.0: Guest Rx stalled Oct 2 17:47:58 xensystem kernel: [85364.640631] qemu-system-i38 invoked oom-killer: gfp_mask=0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD), nodemask=0, order=0, oom_score_adj=0 Oct 2 17:47:58 xensystem kernel: [85364.640632] qemu-system-i38 cpuset=/ mems_allowed=0 Oct 2 17:47:58 xensystem kernel: [85364.640637] CPU: 0 PID: 8560 Comm: qemu-system-i38 Not tainted 4.9.0-3-amd64 #1 Debian 4.9.30-2+deb9u5 Oct 2 17:47:58 xensystem kernel: [85364.640637] Hardware name: Dell Inc. PowerEdge T310/02P9X9, BIOS 1.4.1 07/19/2010 Oct 2 17:47:58 xensystem kernel: [85364.640639] 0000000000000000 ffffffff813285b4 ffffc90040cfbc38 ffff8800023f2fc0 Oct 2 17:47:58 xensystem kernel: [85364.640641] ffffffff811fe020 0000000000000000 0000000000000000 ffff880003270440 Oct 2 17:47:58 xensystem kernel: [85364.640643] ffffffff811844e7 00000042023f3a00 0000000000000000 0000000000000001 
Oct  2 17:47:58 xensystem kernel: [85364.640644] Call Trace:
Oct 2 17:47:58 xensystem kernel: [85364.640650] [<ffffffff813285b4>] ? dump_stack+0x5c/0x78 Oct 2 17:47:58 xensystem kernel: [85364.640653] [<ffffffff811fe020>] ? dump_header+0x78/0x1fd Oct 2 17:47:58 xensystem kernel: [85364.640655] [<ffffffff811844e7>] ? get_page_from_freelist+0x3f7/0xb40 Oct 2 17:47:58 xensystem kernel: [85364.640658] [<ffffffff8118047a>] ? oom_kill_process+0x21a/0x3e0 Oct 2 17:47:58 xensystem kernel: [85364.640659] [<ffffffff811800fd>] ? oom_badness+0xed/0x170 Oct 2 17:47:58 xensystem kernel: [85364.640660] [<ffffffff81180911>] ? out_of_memory+0x111/0x470 Oct 2 17:47:58 xensystem kernel: [85364.640662] [<ffffffff81185b4f>] ? __alloc_pages_slowpath+0xb7f/0xbc0 Oct 2 17:47:58 xensystem kernel: [85364.640663] [<ffffffff81185d8e>] ? __alloc_pages_nodemask+0x1fe/0x260 Oct 2 17:47:58 xensystem kernel: [85364.640666] [<ffffffff811d5ec1>] ? alloc_pages_current+0x91/0x140 Oct 2 17:47:58 xensystem kernel: [85364.640668] [<ffffffff8117e940>] ? filemap_fault+0x300/0x5a0 Oct 2 17:47:58 xensystem kernel: [85364.640686] [<ffffffffc02e5791>] ? ext4_filemap_fault+0x31/0x50 [ext4] Oct 2 17:47:58 xensystem kernel: [85364.640688] [<ffffffff811aeef1>] ? __do_fault+0x81/0x170 Oct 2 17:47:58 xensystem kernel: [85364.640689] [<ffffffff811b3671>] ? handle_mm_fault+0xdd1/0x1350 Oct 2 17:47:58 xensystem kernel: [85364.640691] [<ffffffff8133543c>] ? copy_user_generic_string+0x2c/0x40 Oct 2 17:47:58 xensystem kernel: [85364.640693] [<ffffffff8124e9e4>] ? eventfd_write+0xc4/0x210 Oct 2 17:47:58 xensystem kernel: [85364.640695] [<ffffffff8105fd84>] ? __do_page_fault+0x2a4/0x510 Oct 2 17:47:58 xensystem kernel: [85364.640697] [<ffffffff81607758>] ? page_fault+0x28/0x30 
Oct  2 17:47:58 xensystem kernel: [85364.640698] Mem-Info:
Oct 2 17:47:58 xensystem kernel: [85364.640702] active_anon:329157 inactive_anon:110630 isolated_anon:0 Oct 2 17:47:58 xensystem kernel: [85364.640702] active_file:161 inactive_file:457 isolated_file:0 Oct 2 17:47:58 xensystem kernel: [85364.640702] unevictable:13089 dirty:0 writeback:7 unstable:0 Oct 2 17:47:58 xensystem kernel: [85364.640702] slab_reclaimable:2304 slab_unreclaimable:6682 Oct 2 17:47:58 xensystem kernel: [85364.640702] mapped:3204 shmem:118 pagetables:6144 bounce:0 Oct 2 17:47:58 xensystem kernel: [85364.640702] free:3218 free_pcp:30 free_cma:0 Oct 2 17:47:58 xensystem kernel: [85364.640705] Node 0 active_anon:1316628kB inactive_anon:442520kB active_file:644kB inactive_file:1828kB unevictable:52356kB isolated(anon):0kB isolated(file):0kB mapped:12816kB dirty:0kB writeback:28kB shmem:472kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB pages_scanned:119274 all_unreclaimable? yes Oct 2 17:47:58 xensystem kernel: [85364.640705] Node 0 DMA free:7428kB min:44kB low:56kB high:68kB active_anon:144kB inactive_anon:8232kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15988kB managed:15904kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:4kB kernel_stack:0kB pagetables:84kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB Oct 2 17:47:58 xensystem kernel: [85364.640708] lowmem_reserve[]: 0 1846 1846 1846 1846 Oct 2 17:47:58 xensystem kernel: [85364.640711] Node 0 DMA32 free:5444kB min:5472kB low:7360kB high:9248kB active_anon:1316484kB inactive_anon:434288kB active_file:644kB inactive_file:1828kB unevictable:52356kB writepending:28kB present:3119716kB managed:1915524kB mlocked:52356kB slab_reclaimable:9216kB slab_unreclaimable:26724kB kernel_stack:2992kB pagetables:24492kB bounce:0kB free_pcp:120kB local_pcp:120kB free_cma:0kB 
Oct  2 17:47:58 xensystem kernel: [85364.640714] lowmem_reserve[]: 0 0 0 0 0
Oct 2 17:47:58 xensystem kernel: [85364.640716] Node 0 Normal free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1058596kB managed:6312kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB 
Oct  2 17:47:58 xensystem kernel: [85364.640719] lowmem_reserve[]: 0 0 0 0 0
Oct 2 17:47:58 xensystem kernel: [85364.640721] Node 0 DMA: 5*4kB (UM) 2*8kB (UM) 2*16kB (UM) 4*32kB (UM) 1*64kB (U) 0*128kB 2*256kB (UM) 1*512kB (M) 2*1024kB (UM) 0*2048kB 1*4096kB (E) = 7428kB Oct 2 17:47:58 xensystem kernel: [85364.640729] Node 0 DMA32: 231*4kB (UE) 111*8kB (UE) 31*16kB (UME) 16*32kB (UME) 5*64kB (U) 16*128kB (UM) 1*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 5444kB Oct 2 17:47:58 xensystem kernel: [85364.640737] Node 0 Normal: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB 
Oct  2 17:47:58 xensystem kernel: [85364.640742] 3711 total pagecache pages
Oct  2 17:47:58 xensystem kernel: [85364.640743] 122 pages in swap cache
Oct 2 17:47:58 xensystem kernel: [85364.640744] Swap cache stats: add 6333548, delete 6333426, find 27186/47163 
Oct  2 17:47:58 xensystem kernel: [85364.640745] Free swap  = 0kB
Oct  2 17:47:58 xensystem kernel: [85364.640745] Total swap = 8388604kB
Oct  2 17:47:58 xensystem kernel: [85364.640746] 1048575 pages RAM
Oct  2 17:47:58 xensystem kernel: [85364.640746] 0 pages HighMem/MovableOnly
Oct  2 17:47:58 xensystem kernel: [85364.640746] 564140 pages reserved
Oct  2 17:47:58 xensystem kernel: [85364.640747] 0 pages hwpoisoned
Oct 2 17:47:58 xensystem kernel: [85364.640747] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name Oct 2 17:47:58 xensystem kernel: [85364.640751] [ 882] 0 882 14177 135 25 3 96 0 systemd-journal Oct 2 17:47:58 xensystem kernel: [85364.640753] [ 892] 0 892 45233 561 21 3 75 0 lvmetad Oct 2 17:47:58 xensystem kernel: [85364.640754] [ 903] 0 903 11370 196 23 3 184 -1000 systemd-udevd Oct 2 17:47:58 xensystem kernel: [85364.640756] [ 950] 0 950 91189 4731 33 3 0 -1000 dmeventd Oct 2 17:47:58 xensystem kernel: [85364.640758] [ 1160] 0 1160 1744 36 10 3 26 0 mdadm Oct 2 17:47:58 xensystem kernel: [85364.640759] [ 1241] 0 1241 11625 215 27 3 121 0 systemd-logind Oct 2 17:47:58 xensystem kernel: [85364.640761] [ 1244] 105 1244 11283 378 25 3 123 -900 dbus-daemon Oct 2 17:47:58 xensystem kernel: [85364.640762] [ 1268] 0 1268 7416 349 19 3 50 0 cron Oct 2 17:47:58 xensystem kernel: [85364.640764] [ 1269] 0 1269 62529 59 28 3 180 0 rsyslogd Oct 2 17:47:58 xensystem kernel: [85364.640765] [ 1300] 0 1300 3186 0 11 3 42 0 mcelog Oct 2 17:47:58 xensystem kernel: [85364.640767] [ 1323] 0 1323 5304 316 15 3 128 0 xenstored Oct 2 17:47:58 xensystem kernel: [85364.640768] [ 1325] 0 1325 17486 309 39 4 163 -1000 sshd Oct 2 17:47:58 xensystem kernel: [85364.640770] [ 1335] 111 1335 18836 312 40 3 187 0 zabbix_agentd Oct 2 17:47:58 xensystem kernel: [85364.640771] [ 1337] 111 1337 18836 55 38 3 174 0 zabbix_agentd Oct 2 17:47:58 xensystem kernel: [85364.640772] [ 1338] 111 1338 18836 2 39 3 190 0 zabbix_agentd Oct 2 17:47:58 xensystem kernel: [85364.640774] [ 1339] 111 1339 18836 2 39 3 190 0 zabbix_agentd Oct 2 17:47:58 xensystem kernel: [85364.640775] [ 1340] 111 1340 18836 2 39 3 190 0 zabbix_agentd Oct 2 17:47:58 xensystem kernel: [85364.640777] [ 1341] 111 1341 19884 36 42 3 172 0 zabbix_agentd Oct 2 17:47:58 xensystem kernel: [85364.640778] [ 1343] 0 1343 24661 1572 53 3 9952 0 fusioninventory Oct 2 17:47:58 xensystem kernel: [85364.640779] [ 1344] 0 1344 7106 487 20 3 103 0 vsftpd Oct 2 17:47:58 xensystem kernel: [85364.640781] [ 1350] 0 1350 3578 342 12 3 39 0 agetty Oct 2 17:47:58 xensystem kernel: [85364.640782] [ 1362] 107 1362 25516 240 24 3 106 0 ntpd Oct 2 17:47:58 xensystem kernel: [85364.640783] [ 1403] 0 1403 7349 419 17 3 129 0 monitor Oct 2 17:47:58 xensystem kernel: [85364.640785] [ 1404] 0 1404 7435 1029 18 3 128 0 ovsdb-server Oct 2 17:47:58 xensystem kernel: [85364.640786] [ 1411] 0 1411 24790 308 23 3 100 0 xenconsoled Oct 2 17:47:58 xensystem kernel: [85364.640788] [ 1423] 0 1423 7970 452 17 3 94 0 monitor Oct 2 17:47:58 xensystem kernel: [85364.640789] [ 1424] 0 1424 63404 8842 36 3 0 0 ovs-vswitchd Oct 2 17:47:58 xensystem kernel: [85364.640791] [ 1481] 0 1481 77967 393 105 3 1030 0 qemu-system-i38 Oct 2 17:47:58 xensystem kernel: [85364.640792] [ 1815] 0 1815 26889 263 28 3 397 0 xl Oct 2 17:47:58 xensystem kernel: [85364.640794] [ 5913] 0 5913 14175 544 32 3 189 0 systemd Oct 2 17:47:58 xensystem kernel: [85364.640795] [ 5914] 0 5914 20783 21 42 3 528 0 (sd-pam) Oct 2 17:47:58 xensystem kernel: [85364.640797] [ 6737] 0 6737 3634 253 12 3 31 0 agetty Oct 2 17:47:58 xensystem kernel: [85364.640798] [ 8560] 0 8560 2688279 437958 5131 13 2080916 0 qemu-system-i38 Oct 2 17:47:58 xensystem kernel: [85364.640799] [ 8812] 0 8812 28731 310 29 3 128 0 xl Oct 2 17:47:58 xensystem kernel: [85364.640801] Out of memory: Kill process 8560 (qemu-system-i38) score 948 or sacrifice child Oct 2 17:47:58 xensystem kernel: [85364.640845] Killed process 8560 (qemu-system-i38) total-vm:10753116kB, anon-rss:1748768kB, file-rss:3064kB, shmem-rss:0kB Oct 2 17:47:58 xensystem kernel: [85364.651948] device vif5.1-emu left promiscuous mode Oct 2 17:47:58 xensystem kernel: [85364.664016] device vif5.0-emu left promiscuous mode Oct 2 17:47:59 xensystem kernel: [85365.525137] oom_reaper: reaped process 8560 (qemu-system-i38), now anon-rss:8kB, file-rss:0kB, shmem-rss:0kB 


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