[uml-devel] oom-killer forced by syscall add_key

[uml-devel] oom-killer forced by syscall add_key

[Toralf Förster]

With
$> trinity --children 2 -c add_key --quiet
it takes only 2 minutes to force an oom-killer at a user mode linux guest.

I'm just wondering if this is a wanted behaviour of the kernel.

2013-05-12T16:26:22.662+02:00 trinity kernel: trinity-child0 invoked oom-killer: gfp_mask=0x200da, order=0, oom_score_adj=500
2013-05-12T16:26:22.662+02:00 trinity kernel: CPU: 0 PID: 1018 Comm: trinity-child0 Not tainted 3.10.0-rc1-00002-gcaec151 #5
2013-05-12T16:26:22.662+02:00 trinity kernel: 3eb07bd0 3eb07c2c 0835c7bd 3f5a3b3c 3f5a37b0 000200da 00000000 000001f4 
2013-05-12T16:26:22.662+02:00 trinity kernel: 08443920 3eb07c00 08071dfe 00000000 3eb07c0c 083614dc 00000001 3eb07c2c 
2013-05-12T16:26:22.662+02:00 trinity kernel: 08278d45 08443920 00000001 3eb00000 3f5a3600 3f5a3600 3f5a3600 3eb07c70 3eb07ba4:  [<08060d2f>] show_stack+0xcf/0x100
2013-05-12T16:26:22.662+02:00 trinity kernel: 3eb07bc8:  [<0835ed99>] dump_stack+0x26/0x28
2013-05-12T16:26:22.662+02:00 trinity kernel: 3eb07bd8:  [<0835c7bd>] dump_header.isra.12+0x93/0x1c8
2013-05-12T16:26:22.662+02:00 trinity kernel: 3eb07c30:  [<080ce620>] oom_kill_process+0x60/0x310
2013-05-12T16:26:22.662+02:00 trinity kernel: 3eb07c74:  [<080cedcd>] out_of_memory+0x2bd/0x320
2013-05-12T16:26:22.662+02:00 trinity kernel: 3eb07cc0:  [<080d2258>] __alloc_pages_nodemask+0x628/0x750
2013-05-12T16:26:22.678+02:00 trinity kernel: 3eb07d4c:  [<080e6750>] handle_pte_fault+0x130/0x780
2013-05-12T16:26:22.678+02:00 trinity kernel: 3eb07da4:  [<080e6e6c>] handle_mm_fault+0xcc/0xe0
2013-05-12T16:26:22.678+02:00 trinity kernel: 3eb07dd8:  [<08061d87>] handle_page_fault+0x127/0x280
2013-05-12T16:26:22.678+02:00 trinity kernel: 3eb07e1c:  [<08061fb6>] segv+0xa6/0x2b0
2013-05-12T16:26:22.678+02:00 trinity kernel: 3eb07ecc:  [<08062233>] segv_handler+0x73/0x80
2013-05-12T16:26:22.678+02:00 trinity kernel: 3eb07ef4:  [<0807503a>] userspace+0x30a/0x590
2013-05-12T16:26:22.678+02:00 trinity kernel: 3eb07fec:  [<0805f82c>] fork_handler+0x6c/0x70
2013-05-12T16:26:22.678+02:00 trinity kernel: 3eb07ffc:  [<00000000>] 0x0
2013-05-12T16:26:22.678+02:00 trinity kernel:
2013-05-12T16:26:22.678+02:00 trinity kernel: Mem-Info:
2013-05-12T16:26:22.679+02:00 trinity kernel: Normal per-cpu:
2013-05-12T16:26:22.679+02:00 trinity kernel: CPU    0: hi:  186, btch:  31 usd:  37
2013-05-12T16:26:22.679+02:00 trinity kernel: active_anon:109976 inactive_anon:109982 isolated_anon:0
2013-05-12T16:26:22.679+02:00 trinity kernel: active_file:28 inactive_file:330 isolated_file:0
2013-05-12T16:26:22.679+02:00 trinity kernel: unevictable:0 dirty:1 writeback:0 unstable:0
2013-05-12T16:26:22.679+02:00 trinity kernel: free:928 slab_reclaimable:803 slab_unreclaimable:959
2013-05-12T16:26:22.679+02:00 trinity kernel: mapped:429 shmem:373 pagetables:1683 bounce:0
2013-05-12T16:26:22.679+02:00 trinity kernel: free_cma:0
2013-05-12T16:26:22.679+02:00 trinity kernel: Normal free:3712kB min:3796kB low:4744kB high:5692kB active_anon:439904kB inactive_anon:439928kB active_file:112kB inactive_file:1320kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:928056kB managed:901248kB mlocked:0kB dirty:4kB writeback:0kB mapped:1716kB shmem:1492kB slab_reclaimable:3212kB slab_unreclaimable:3836kB kernel_stack:1536kB pagetables:6732kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:4258 all_unreclaimable? yes
2013-05-12T16:26:22.679+02:00 trinity kernel: lowmem_reserve[]: 0 0
2013-05-12T16:26:22.680+02:00 trinity kernel: Normal: 0*4kB 0*8kB 2*16kB (R) 3*32kB (R) 0*64kB 0*128kB 0*256kB 1*512kB (R) 1*1024kB (R) 1*2048kB (R) 0*4096kB = 3712kB
2013-05-12T16:26:22.680+02:00 trinity kernel: 899 total pagecache pages
2013-05-12T16:26:22.680+02:00 trinity kernel: 168 pages in swap cache
2013-05-12T16:26:22.680+02:00 trinity kernel: Swap cache stats: add 65784, delete 65616, find 448/478
2013-05-12T16:26:22.680+02:00 trinity kernel: Free swap  = 0kB
2013-05-12T16:26:22.680+02:00 trinity kernel: Total swap = 262140kB
2013-05-12T16:26:22.680+02:00 trinity kernel: 232014 pages RAM
2013-05-12T16:26:22.680+02:00 trinity kernel: 6702 pages reserved
2013-05-12T16:26:22.680+02:00 trinity kernel: 263109 pages shared
2013-05-12T16:26:22.680+02:00 trinity kernel: 223418 pages non-shared
2013-05-12T16:26:22.681+02:00 trinity kernel: [ pid ]   uid  tgid total_vm      rss nr_ptes swapents oom_score_adj name
2013-05-12T16:26:22.681+02:00 trinity kernel: [  445]     0   445     2273        0       5      107         -1000 udevd
2013-05-12T16:26:22.681+02:00 trinity kernel: [  870]     0   870     1074        0       3       39             0 syslog-ng
2013-05-12T16:26:22.681+02:00 trinity kernel: [  871]     0   871     1825        0       4      137             0 syslog-ng
2013-05-12T16:26:22.681+02:00 trinity kernel: [  885]     0   885     1332        0       4      805             0 haveged
2013-05-12T16:26:22.681+02:00 trinity kernel: [  899]     0   899      529        5       3       10             0 rngd
2013-05-12T16:26:22.681+02:00 trinity kernel: [  946]     0   946      594        0       3       28             0 dhcpcd
2013-05-12T16:26:22.681+02:00 trinity kernel: [  962]     0   962     1287        0       4       84         -1000 sshd
2013-05-12T16:26:22.681+02:00 trinity kernel: [  990]     0   990     1131        9       4       22             0 cron
2013-05-12T16:26:22.681+02:00 trinity kernel: [ 1007]     0  1007      597        0       3       27             0 agetty
2013-05-12T16:26:22.682+02:00 trinity kernel: [ 1009]     0  1009     2086        0       4      147             0 sshd
2013-05-12T16:26:22.682+02:00 trinity kernel: [ 1011]     0  1011      543        0       3       17             0 tail
2013-05-12T16:26:22.682+02:00 trinity kernel: [ 1012]     0  1012     2086        0       4      145             0 sshd
2013-05-12T16:26:22.682+02:00 trinity kernel: [ 1014]  1000  1014     2086       27       4      126             0 sshd
2013-05-12T16:26:22.682+02:00 trinity kernel: [ 1015]  1000  1015     3628        2       5     1049             0 trinity
2013-05-12T16:26:22.682+02:00 trinity kernel: [ 1016]  1000  1016     3628       11       4     1041             0 trinity-watchdo
2013-05-12T16:26:22.682+02:00 trinity kernel: [ 1017]  1000  1017     3749        2       4     1138             0 trinity-main
2013-05-12T16:26:22.682+02:00 trinity kernel: [ 1018]  1000  1018   290362   111694     284    33276           500 trinity-child0
2013-05-12T16:26:22.682+02:00 trinity kernel: [ 1019]  1000  1019   281146   108749     275    31440           500 trinity-child1
2013-05-12T16:26:22.682+02:00 trinity kernel: Out of memory: Kill process 1018 (trinity-child0) score 997 or sacrifice child
2013-05-12T16:26:22.683+02:00 trinity kernel: Killed process 1018 (trinity-child0) total-vm:1161448kB, anon-rss:445060kB, file-rss:1716kB


-- 
MfG/Sincerely
Toralf Förster
pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3

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