Re: Possible race condition in oom-killer
From: Tetsuo Handa
Date: Tue Aug 01 2017 - 06:46:59 EST
Michal Hocko wrote:
> > > Is
> > > something other than the LTP test affected to give this more priority?
> > > Do we have other usecases where something mlocks the whole memory?
> >
> > This panic was caused by 50 threads sharing MMF_OOM_SKIP mm exceeding
> > number of OOM killable processes. Whether memory is locked or not isn't
> > important.
>
> You are wrong here I believe. The whole problem is that the OOM victim
> is consuming basically all the memory (that is what the test case
> actually does IIRC) and that memory is mlocked. oom_reaper is much
> faster to evaluate the mm of the victim and bail out sooner than the
> exit path actually manages to tear down the address space. And so we
> have to find other oom victims until we simply kill everything and
> panic.
Again, whether memory is locked or not isn't important. I can easily
reproduce unnecessary OOM victim selection as a local unprivileged user
using below program.
----------
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sched.h>
#include <sys/mman.h>
#define NUMTHREADS 128
#define MMAPSIZE 128 * 1048576
#define STACKSIZE 4096
static int pipe_fd[2] = { EOF, EOF };
static int memory_eater(void *unused)
{
int fd = open("/dev/zero", O_RDONLY);
char *buf = mmap(NULL, MMAPSIZE, PROT_WRITE | PROT_READ,
MAP_ANONYMOUS | MAP_SHARED, EOF, 0);
read(pipe_fd[0], buf, 1);
read(fd, buf, MMAPSIZE);
pause();
return 0;
}
int main(int argc, char *argv[])
{
int i;
char *stack;
if (fork() || fork() || setsid() == EOF || pipe(pipe_fd))
_exit(0);
stack = mmap(NULL, STACKSIZE * NUMTHREADS, PROT_WRITE | PROT_READ,
MAP_ANONYMOUS | MAP_SHARED, EOF, 0);
for (i = 0; i < NUMTHREADS; i++)
if (clone(memory_eater, stack + (i + 1) * STACKSIZE,
CLONE_THREAD | CLONE_SIGHAND | CLONE_VM | CLONE_FS |
CLONE_FILES, NULL) == -1)
break;
sleep(1);
close(pipe_fd[1]);
pause();
return 0;
}
----------
Complete log is at http://I-love.SAKURA.ne.jp/tmp/serial-20170801-2.txt.xz :
----------
[ 237.792768] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
[ 237.795575] [ 451] 0 451 9206 639 21 3 0 0 systemd-journal
[ 237.798515] [ 478] 0 478 11138 740 25 3 0 -1000 systemd-udevd
[ 237.801430] [ 488] 0 488 13856 100 26 3 0 -1000 auditd
[ 237.804212] [ 592] 81 592 6135 119 18 3 0 -900 dbus-daemon
[ 237.807166] [ 668] 0 668 1094 23 8 3 0 0 rngd
[ 237.809927] [ 671] 70 671 7029 75 19 4 0 0 avahi-daemon
[ 237.812809] [ 672] 0 672 53144 402 57 4 0 0 abrtd
[ 237.815611] [ 675] 0 675 26372 246 54 3 0 -1000 sshd
[ 237.818358] [ 679] 0 679 52573 341 54 3 0 0 abrt-watch-log
[ 237.821274] [ 680] 0 680 6050 79 17 3 0 0 systemd-logind
[ 237.824279] [ 683] 0 683 4831 82 16 3 0 0 irqbalance
[ 237.827119] [ 698] 0 698 56014 630 40 4 0 0 rsyslogd
[ 237.829929] [ 715] 70 715 6997 59 18 4 0 0 avahi-daemon
[ 237.832799] [ 832] 0 832 65453 228 44 3 0 0 vmtoolsd
[ 237.835605] [ 852] 0 852 57168 353 58 3 0 0 vmtoolsd
[ 237.838409] [ 909] 0 909 31558 155 20 3 0 0 crond
[ 237.841160] [ 986] 0 986 84330 393 114 4 0 0 nmbd
[ 237.843878] [ 1041] 0 1041 23728 168 51 3 0 0 login
[ 237.846623] [ 2019] 0 2019 22261 252 43 3 0 0 master
[ 237.849307] [ 2034] 0 2034 27511 33 13 3 0 0 agetty
[ 237.851977] [ 2100] 89 2100 22287 250 45 3 0 0 pickup
[ 237.854607] [ 2101] 89 2101 22304 251 45 3 0 0 qmgr
[ 237.857179] [ 2597] 0 2597 102073 568 150 3 0 0 smbd
[ 237.859773] [ 3905] 1000 3905 28885 133 15 4 0 0 bash
[ 237.862337] [ 3952] 0 3952 27511 32 10 3 0 0 agetty
[ 237.864905] [ 4772] 0 4772 102073 568 140 3 0 0 cleanupd
[ 237.867488] [ 4775] 1000 4775 4195473 860912 1814 19 0 0 a.out
[ 237.869991] Out of memory: Kill process 4775 (a.out) score 924 or sacrifice child
[ 240.940617] Killed process 4775 (a.out) total-vm:16781892kB, anon-rss:88kB, file-rss:0kB, shmem-rss:3443560kB
[ 240.962810] oom_reaper: reaped process 4775 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3445880kB
[ 240.965513] oom_reaper: reaped process 4863 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3445880kB
[ 240.968192] oom_reaper: reaped process 4896 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3445880kB
[ 240.970789] oom_reaper: reaped process 4851 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3445880kB
[ 240.973352] oom_reaper: reaped process 4788 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3445880kB
[ 240.978376] oom_reaper: reaped process 4781 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3445880kB
[ 240.981007] oom_reaper: reaped process 4780 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3445880kB
[ 240.983527] oom_reaper: reaped process 4903 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3445880kB
[ 240.986038] oom_reaper: reaped process 4891 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3445880kB
[ 240.988697] oom_reaper: reaped process 4809 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3445880kB
[ 240.999681] oom_reaper: reaped process 4806 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3445880kB
[ 241.002165] oom_reaper: reaped process 4783 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3445880kB
[ 241.004591] oom_reaper: reaped process 4816 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3445880kB
[ 241.007022] oom_reaper: reaped process 4873 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3445880kB
[ 241.009522] a.out invoked oom-killer: gfp_mask=0x14200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=0
[ 241.157201] a.out cpuset=/ mems_allowed=0
[ 241.158983] CPU: 1 PID: 4805 Comm: a.out Not tainted 4.13.0-rc2-next-20170728 #649
(...snipped...)
[ 357.797379] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
[ 357.800119] [ 478] 0 478 11138 740 25 3 0 -1000 systemd-udevd
[ 357.803005] [ 488] 0 488 13856 110 26 3 0 -1000 auditd
[ 357.805800] [ 592] 81 592 6135 119 18 3 0 -900 dbus-daemon
[ 357.808710] [ 668] 0 668 1094 23 8 3 0 0 rngd
[ 357.811437] [ 671] 70 671 7029 75 19 4 0 0 avahi-daemon
[ 357.814308] [ 675] 0 675 26372 246 54 3 0 -1000 sshd
[ 357.817048] [ 679] 0 679 52573 341 54 3 0 0 abrt-watch-log
[ 357.819969] [ 680] 0 680 6050 79 17 3 0 0 systemd-logind
[ 357.822863] [ 683] 0 683 4831 82 16 3 0 0 irqbalance
[ 357.825699] [ 715] 70 715 6997 59 18 4 0 0 avahi-daemon
[ 357.828567] [ 832] 0 832 65453 228 44 3 0 0 vmtoolsd
[ 357.831373] [ 909] 0 909 31558 155 20 3 0 0 crond
[ 357.834160] [ 1041] 0 1041 23728 168 51 3 0 0 login
[ 357.836882] [ 2019] 0 2019 22261 258 43 3 0 0 master
[ 357.839597] [ 2034] 0 2034 27511 33 13 3 0 0 agetty
[ 357.842472] [ 2100] 89 2100 22287 250 45 3 0 0 pickup
[ 357.845358] [ 2101] 89 2101 22304 250 45 3 0 0 qmgr
[ 357.848247] [ 3905] 1000 3905 28885 134 15 4 0 0 bash
[ 357.851074] [ 3952] 0 3952 27511 32 10 3 0 0 agetty
[ 357.853790] [ 5040] 0 5040 9207 365 20 3 0 0 systemd-journal
[ 357.856619] [ 5459] 0 5459 58062 437 42 3 0 0 rsyslogd
[ 357.859296] [ 5465] 1000 5465 4195473 862629 1767 19 0 0 a.out
[ 357.861907] Out of memory: Kill process 5465 (a.out) score 926 or sacrifice child
[ 358.789961] Killed process 5465 (a.out) total-vm:16781892kB, anon-rss:88kB, file-rss:0kB, shmem-rss:3450428kB
[ 358.903547] oom_reaper: reaped process 5465 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3451792kB
[ 358.906409] oom_reaper: reaped process 5556 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3451792kB
[ 358.909182] oom_reaper: reaped process 5579 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3451792kB
[ 358.911930] oom_reaper: reaped process 5500 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3451792kB
[ 358.914625] oom_reaper: reaped process 5514 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3451792kB
[ 358.917425] oom_reaper: reaped process 5569 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3451792kB
[ 358.923629] oom_reaper: reaped process 5533 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3451792kB
[ 358.926289] oom_reaper: reaped process 5501 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3451792kB
[ 358.928867] oom_reaper: reaped process 5534 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3451792kB
[ 358.935580] oom_reaper: reaped process 5505 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3451792kB
(...snipped...)
[ 359.863069] Out of memory: Kill process 5459 (rsyslogd) score 0 or sacrifice child
[ 359.868030] Killed process 5459 (rsyslogd) total-vm:232248kB, anon-rss:648kB, file-rss:4kB, shmem-rss:1096kB
(...snipped...)
[ 364.311536] Out of memory: Kill process 679 (abrt-watch-log) score 0 or sacrifice child
[ 364.317978] Killed process 679 (abrt-watch-log) total-vm:210292kB, anon-rss:1360kB, file-rss:4kB, shmem-rss:0kB
(...snipped...)
[ 364.490986] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
[ 364.493818] [ 478] 0 478 11138 740 25 3 0 -1000 systemd-udevd
[ 364.496727] [ 488] 0 488 13856 110 26 3 0 -1000 auditd
[ 364.499669] [ 592] 81 592 6135 119 18 3 0 -900 dbus-daemon
[ 364.502571] [ 668] 0 668 1094 23 8 3 0 0 rngd
[ 364.505303] [ 671] 70 671 7029 75 19 4 0 0 avahi-daemon
[ 364.508067] [ 675] 0 675 26372 246 54 3 0 -1000 sshd
[ 364.510723] [ 680] 0 680 6050 79 17 3 0 0 systemd-logind
[ 364.513735] [ 683] 0 683 4831 81 16 3 0 0 irqbalance
[ 364.516457] [ 715] 70 715 6997 59 18 4 0 0 avahi-daemon
[ 364.519210] [ 832] 0 832 65453 228 44 3 0 0 vmtoolsd
[ 364.521919] [ 909] 0 909 31558 155 20 3 0 0 crond
[ 364.524817] [ 1041] 0 1041 23728 168 51 3 0 0 login
[ 364.527471] [ 2019] 0 2019 22261 258 43 3 0 0 master
[ 364.530118] [ 2034] 0 2034 27511 33 13 3 0 0 agetty
[ 364.532933] [ 2100] 89 2100 22287 250 45 3 0 0 pickup
[ 364.535522] [ 2101] 89 2101 22304 250 45 3 0 0 qmgr
[ 364.538160] [ 3905] 1000 3905 28885 134 15 4 0 0 bash
[ 364.540763] [ 3952] 0 3952 27511 32 10 3 0 0 agetty
[ 364.543292] [ 5040] 0 5040 9207 364 20 3 0 0 systemd-journal
[ 364.546028] [ 5484] 1000 5465 4195473 867043 1767 19 0 0 a.out
[ 364.548515] Out of memory: Kill process 5040 (systemd-journal) score 0 or sacrifice child
[ 364.551666] Killed process 5040 (systemd-journal) total-vm:36828kB, anon-rss:260kB, file-rss:0kB, shmem-rss:1196kB
----------
Usually OOM killable tasks up to number of available CPUs are killed by one OOM killer
invocation, but similar reproducer (CLONE_THREAD | CLONE_SIGHAND removed from above one)
had killed all OOM killable tasks and panic()ed (so far only once).
Complete log is at http://I-love.SAKURA.ne.jp/tmp/serial-20170801.txt.xz :
----------
[ 1301.010587] Mem-Info:
[ 1301.021217] active_anon:3744 inactive_anon:872936 isolated_anon:0
[ 1301.021217] active_file:59 inactive_file:22 isolated_file:37
[ 1301.021217] unevictable:0 dirty:16 writeback:1 unstable:0
[ 1301.021217] slab_reclaimable:0 slab_unreclaimable:17
[ 1301.021217] mapped:853542 shmem:874817 pagetables:2039 bounce:0
[ 1301.021217] free:21371 free_pcp:93 free_cma:0
[ 1301.030807] Node 0 active_anon:14976kB inactive_anon:3491956kB active_file:104kB inactive_file:100kB unevictable:0kB isolated(anon):0kB isolated(file):92kB mapped:3414188kB dirty:60kB writeback:4kB shmem:3499480kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
[ 1301.038255] Node 0 DMA free:14756kB min:288kB low:360kB high:432kB active_anon:0kB inactive_anon:1108kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15988kB managed:15904kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1301.044649] lowmem_reserve[]: 0 2688 3624 3624
[ 1301.046306] Node 0 DMA32 free:53376kB min:49908kB low:62384kB high:74860kB active_anon:16kB inactive_anon:2682284kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129216kB managed:2752884kB mlocked:0kB kernel_stack:0kB pagetables:5328kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1301.053203] lowmem_reserve[]: 0 0 936 936
[ 1301.054748] Node 0 Normal free:16756kB min:17384kB low:21728kB high:26072kB active_anon:14960kB inactive_anon:808292kB active_file:20kB inactive_file:16kB unevictable:0kB writepending:64kB present:1048576kB managed:958868kB mlocked:0kB kernel_stack:4800kB pagetables:2836kB bounce:0kB free_pcp:392kB local_pcp:288kB free_cma:0kB
[ 1301.062749] lowmem_reserve[]: 0 0 0 0
[ 1301.065274] Node 0 DMA: 2*4kB (UM) 1*8kB (U) 1*16kB (U) 2*32kB (UM) 1*64kB (U) 2*128kB (UM) 2*256kB (UM) 1*512kB (M) 1*1024kB (U) 0*2048kB 3*4096kB (ME) = 14752kB
[ 1301.070034] Node 0 DMA32: 9*4kB (UM) 7*8kB (UM) 7*16kB (UME) 6*32kB (UME) 4*64kB (UME) 1*128kB (M) 2*256kB (ME) 0*512kB 1*1024kB (U) 1*2048kB (E) 12*4096kB (UM) = 53516kB
[ 1301.074902] Node 0 Normal: 85*4kB (UMEH) 56*8kB (UMEH) 38*16kB (UMEH) 14*32kB (UMEH) 9*64kB (UEH) 12*128kB (UMEH) 26*256kB (UMEH) 10*512kB (UME) 1*1024kB (H) 0*2048kB 0*4096kB = 16756kB
[ 1301.080143] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[ 1301.082796] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 1301.085387] 874919 total pagecache pages
[ 1301.086962] 0 pages in swap cache
[ 1301.088505] Swap cache stats: add 0, delete 0, find 0/0
[ 1301.090370] Free swap = 0kB
[ 1301.091743] Total swap = 0kB
[ 1301.093140] 1048445 pages RAM
[ 1301.094677] 0 pages HighMem/MovableOnly
[ 1301.096600] 116531 pages reserved
[ 1301.098143] 0 pages hwpoisoned
[ 1301.099690] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
[ 1301.103027] [ 476] 0 476 10952 553 24 3 0 -1000 systemd-udevd
[ 1301.106142] [ 486] 0 486 13856 110 26 3 0 -1000 auditd
[ 1301.108737] [ 660] 0 660 26372 247 55 3 0 -1000 sshd
[ 1301.111466] [ 6535] 0 6535 9207 423 21 3 0 0 systemd-journal
[ 1301.114370] [ 6536] 0 6536 6050 78 16 3 0 0 systemd-logind
[ 1301.117136] [ 6537] 0 6537 27511 32 13 3 0 0 agetty
[ 1301.119727] [ 6538] 81 6538 6103 78 17 3 0 -900 dbus-daemon
[ 1301.122372] [ 6699] 0 6699 76537 1249 50 3 0 0 rsyslogd
[ 1301.125020] [ 6731] 1000 6731 4195473 848108 1790 19 0 0 a.out
[ 1301.127633] [ 6732] 1000 6732 4195473 848108 1790 19 0 0 a.out
[ 1301.130415] [ 6733] 1000 6733 4195473 848108 1790 19 0 0 a.out
(...snipped...)
[ 1301.386215] [ 6859] 1000 6859 4195473 848108 1790 19 0 0 a.out
[ 1301.388102] [ 6862] 0 6862 27511 32 10 3 0 0 agetty
[ 1301.390015] Out of memory: Kill process 6731 (a.out) score 910 or sacrifice child
[ 1301.392740] Killed process 6731 (a.out) total-vm:16781892kB, anon-rss:84kB, file-rss:0kB, shmem-rss:3392348kB
[ 1301.395605] oom_reaper: reaped process 6731 (a.out), now anon-rss:0kB, file-rss:0kB, shmem-rss:3392400kB
[ 1301.397946] a.out invoked oom-killer: gfp_mask=0x14200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=0
[ 1301.400456] a.out cpuset=/ mems_allowed=0
[ 1301.401574] CPU: 2 PID: 6855 Comm: a.out Not tainted 4.13.0-rc2-next-20170728 #649
[ 1301.403392] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015
[ 1301.407439] Call Trace:
[ 1301.408321] dump_stack+0x67/0x9e
[ 1301.409352] dump_header+0x9d/0x3fa
[ 1301.410411] ? trace_hardirqs_on+0xd/0x10
[ 1301.411589] oom_kill_process+0x226/0x650
[ 1301.412776] out_of_memory+0x136/0x560
[ 1301.413898] ? out_of_memory+0x206/0x560
[ 1301.415062] __alloc_pages_nodemask+0xdce/0xeb0
[ 1301.416373] alloc_pages_vma+0x76/0x1a0
[ 1301.417531] shmem_alloc_page+0x6e/0xa0
[ 1301.418700] ? native_sched_clock+0x36/0xa0
[ 1301.419944] shmem_alloc_and_acct_page+0x6d/0x1f0
[ 1301.421299] shmem_getpage_gfp+0x1b6/0xde0
[ 1301.422536] ? current_kernel_time64+0x80/0xa0
[ 1301.423844] shmem_fault+0x91/0x1f0
[ 1301.424969] ? __lock_acquire+0x506/0x1a90
[ 1301.426227] __do_fault+0x19/0x120
[ 1301.427341] __handle_mm_fault+0x873/0x1160
[ 1301.428639] ? native_sched_clock+0x36/0xa0
[ 1301.429964] handle_mm_fault+0x186/0x360
[ 1301.431223] ? handle_mm_fault+0x44/0x360
[ 1301.432487] __do_page_fault+0x1da/0x510
[ 1301.433730] ? __lock_acquire+0x506/0x1a90
[ 1301.435032] do_page_fault+0x21/0x70
[ 1301.436223] page_fault+0x22/0x30
[ 1301.437366] RIP: 0010:__clear_user+0x3d/0x70
[ 1301.438696] RSP: 0000:ffff8801395ffd70 EFLAGS: 00010206
[ 1301.441909] RAX: 0000000000000000 RBX: 0000000000000200 RCX: 0000000000000200
[ 1301.443823] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00007f9bda247000
[ 1301.445863] RBP: ffff8801395ffd80 R08: 0000000000000001 R09: 0000000000000000
[ 1301.447812] R10: 0000000000000001 R11: 0000000000000001 R12: 00007f9bda247000
[ 1301.449757] R13: ffff8801395ffe30 R14: 0000000001992000 R15: 0000000000001000
[ 1301.451723] clear_user+0x34/0x50
[ 1301.452935] iov_iter_zero+0x88/0x380
[ 1301.454219] read_iter_zero+0x38/0xb0
[ 1301.455511] __vfs_read+0xe3/0x140
[ 1301.456752] vfs_read+0x9c/0x150
[ 1301.457958] SyS_read+0x53/0xc0
[ 1301.459151] do_syscall_64+0x61/0x1d0
[ 1301.460451] entry_SYSCALL64_slow_path+0x25/0x25
[ 1301.461940] RIP: 0033:0x7f9ec099dc30
[ 1301.463225] RSP: 002b:00007f9ec0e81fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
[ 1301.465286] RAX: ffffffffffffffda RBX: 00007f9bd88b5000 RCX: 00007f9ec099dc30
[ 1301.467242] RDX: 0000000008000000 RSI: 00007f9bd88b5000 RDI: 0000000000000061
[ 1301.469187] RBP: 0000000000000061 R08: ffffffffffffffff R09: 0000000000000000
[ 1301.471111] R10: 0000000000000021 R11: 0000000000000246 R12: 00000000004007d7
[ 1301.473044] R13: 00007ffeb6830c90 R14: 0000000000000000 R15: 0000000000000000
[ 1301.475012] Mem-Info:
[ 1302.770130] active_anon:3723 inactive_anon:873018 isolated_anon:0
[ 1302.770130] active_file:3 inactive_file:0 isolated_file:0
[ 1302.770130] unevictable:0 dirty:1 writeback:1 unstable:0
[ 1302.770130] slab_reclaimable:0 slab_unreclaimable:2
[ 1302.770130] mapped:853537 shmem:874899 pagetables:2050 bounce:0
[ 1302.770130] free:21373 free_pcp:35 free_cma:0
[ 1302.787545] Node 0 active_anon:14892kB inactive_anon:3492072kB active_file:8kB inactive_file:4kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:3414148kB dirty:4kB writeback:4kB shmem:3499596kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
[ 1302.794036] Node 0 DMA free:14752kB min:288kB low:360kB high:432kB active_anon:0kB inactive_anon:1116kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15988kB managed:15904kB mlocked:0kB kernel_stack:0kB pagetables:4kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1302.803259] lowmem_reserve[]: 0 2688 3624 3624
[ 1302.804839] Node 0 DMA32 free:53516kB min:49908kB low:62384kB high:74860kB active_anon:16kB inactive_anon:2682496kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129216kB managed:2752884kB mlocked:0kB kernel_stack:0kB pagetables:5352kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1302.817760] lowmem_reserve[]: 0 0 936 936
[ 1302.819371] Node 0 Normal free:17224kB min:17384kB low:21728kB high:26072kB active_anon:14876kB inactive_anon:808460kB active_file:108kB inactive_file:0kB unevictable:0kB writepending:8kB present:1048576kB managed:958868kB mlocked:0kB kernel_stack:4784kB pagetables:2844kB bounce:0kB free_pcp:140kB local_pcp:4kB free_cma:0kB
[ 1302.829597] lowmem_reserve[]: 0 0 0 0
[ 1302.831194] Node 0 DMA: 2*4kB (UM) 1*8kB (U) 1*16kB (U) 2*32kB (UM) 1*64kB (U) 2*128kB (UM) 2*256kB (UM) 1*512kB (M) 1*1024kB (U) 0*2048kB 3*4096kB (ME) = 14752kB
[ 1302.835771] Node 0 DMA32: 9*4kB (UM) 7*8kB (UM) 7*16kB (UME) 6*32kB (UME) 4*64kB (UME) 1*128kB (M) 2*256kB (ME) 0*512kB 1*1024kB (U) 1*2048kB (E) 12*4096kB (UM) = 53516kB
[ 1302.842805] Node 0 Normal: 138*4kB (UMEH) 62*8kB (UMEH) 49*16kB (UMEH) 15*32kB (UMEH) 9*64kB (UEH) 12*128kB (UMEH) 26*256kB (UMEH) 10*512kB (UME) 1*1024kB (H) 0*2048kB 0*4096kB = 17224kB
[ 1302.850292] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[ 1302.853053] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 1302.860191] 874902 total pagecache pages
[ 1302.862020] 0 pages in swap cache
[ 1302.863688] Swap cache stats: add 0, delete 0, find 0/0
[ 1302.865828] Free swap = 0kB
[ 1302.867400] Total swap = 0kB
[ 1302.868968] 1048445 pages RAM
[ 1303.699719] 0 pages HighMem/MovableOnly
[ 1303.701531] 116531 pages reserved
[ 1303.703194] 0 pages hwpoisoned
[ 1303.704793] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
[ 1303.707509] [ 476] 0 476 10952 553 24 3 0 -1000 systemd-udevd
[ 1303.710392] [ 486] 0 486 13856 110 26 3 0 -1000 auditd
[ 1303.713153] [ 660] 0 660 26372 247 55 3 0 -1000 sshd
[ 1303.715875] [ 6535] 0 6535 9207 423 21 3 0 0 systemd-journal
[ 1303.719739] [ 6536] 0 6536 6050 78 16 3 0 0 systemd-logind
[ 1303.722604] [ 6537] 0 6537 27511 32 13 3 0 0 agetty
[ 1303.725318] [ 6538] 81 6538 6103 78 17 3 0 -900 dbus-daemon
[ 1303.728122] [ 6699] 0 6699 76537 1231 50 3 0 0 rsyslogd
[ 1303.730883] [ 6732] 1000 6732 4195473 848100 1790 19 0 0 a.out
[ 1303.733591] [ 6733] 1000 6733 4195473 848100 1790 19 0 0 a.out
[ 1303.736272] [ 6734] 1000 6734 4195473 848100 1790 19 0 0 a.out
(...snipped...)
[ 1303.996897] [ 6859] 1000 6859 4195473 848100 1790 19 0 0 a.out
[ 1303.998810] [ 6862] 0 6862 27511 32 10 3 0 0 agetty
[ 1304.000763] Out of memory: Kill process 6699 (rsyslogd) score 1 or sacrifice child
...(noisy "page allocation stalls" lines snipped)...
[ 1378.224508] kworker/u16:2 invoked oom-killer: gfp_mask=0x17080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO|__GFP_NOTRACK), nodemask=(null), order=2, oom_score_adj=0
[ 1378.224513] kworker/u16:2 cpuset=/ mems_allowed=0
[ 1378.224520] CPU: 3 PID: 6523 Comm: kworker/u16:2 Not tainted 4.13.0-rc2-next-20170728 #649
[ 1378.224521] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015
[ 1378.224527] Workqueue: events_unbound call_usermodehelper_exec_work
[ 1378.224528] Call Trace:
[ 1378.224535] dump_stack+0x67/0x9e
[ 1378.224539] dump_header+0x9d/0x3fa
[ 1378.224545] ? trace_hardirqs_on+0xd/0x10
[ 1378.224552] oom_kill_process+0x226/0x650
[ 1378.224558] out_of_memory+0x136/0x560
[ 1378.224560] ? out_of_memory+0x206/0x560
[ 1378.224565] __alloc_pages_nodemask+0xdce/0xeb0
[ 1378.224568] ? copy_process.part.39+0x7eb/0x1e30
[ 1378.224585] copy_process.part.39+0x13f/0x1e30
[ 1378.224587] ? __lock_acquire+0x506/0x1a90
[ 1378.224590] ? load_balance+0x1b0/0xaf0
[ 1378.224598] ? umh_complete+0x30/0x30
[ 1378.224604] _do_fork+0xea/0x5f0
[ 1378.224610] ? native_sched_clock+0x36/0xa0
[ 1378.224619] kernel_thread+0x24/0x30
[ 1378.224622] call_usermodehelper_exec_work+0x35/0xc0
[ 1378.224625] process_one_work+0x1d0/0x3e0
[ 1378.224626] ? process_one_work+0x16a/0x3e0
[ 1378.224634] worker_thread+0x48/0x3c0
[ 1378.224642] kthread+0x10d/0x140
[ 1378.224643] ? process_one_work+0x3e0/0x3e0
[ 1378.224646] ? kthread_create_on_node+0x60/0x60
[ 1378.224651] ret_from_fork+0x27/0x40
[ 1378.224662] Mem-Info:
[ 1378.224666] active_anon:3649 inactive_anon:873071 isolated_anon:0
[ 1378.224666] active_file:34 inactive_file:373 isolated_file:0
[ 1378.224666] unevictable:0 dirty:0 writeback:0 unstable:0
[ 1378.224666] slab_reclaimable:0 slab_unreclaimable:0
[ 1378.224666] mapped:852813 shmem:875026 pagetables:2050 bounce:0
[ 1378.224666] free:21442 free_pcp:86 free_cma:0
[ 1378.224668] Node 0 active_anon:14596kB inactive_anon:3492284kB active_file:136kB inactive_file:1492kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:3411252kB dirty:0kB writeback:0kB shmem:3500104kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
[ 1378.224669] Node 0 DMA free:14752kB min:288kB low:360kB high:432kB active_anon:0kB inactive_anon:1116kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15988kB managed:15904kB mlocked:0kB kernel_stack:0kB pagetables:4kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1378.224672] lowmem_reserve[]: 0 2688 3624 3624
[ 1378.224677] Node 0 DMA32 free:53516kB min:49908kB low:62384kB high:74860kB active_anon:16kB inactive_anon:2682496kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129216kB managed:2752884kB mlocked:0kB kernel_stack:0kB pagetables:5352kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1378.224680] lowmem_reserve[]: 0 0 936 936
[ 1378.224684] Node 0 Normal free:17500kB min:17384kB low:21728kB high:26072kB active_anon:14776kB inactive_anon:808668kB active_file:0kB inactive_file:1940kB unevictable:0kB writepending:0kB present:1048576kB managed:958868kB mlocked:0kB kernel_stack:2736kB pagetables:2844kB bounce:0kB free_pcp:344kB local_pcp:224kB free_cma:0kB
[ 1378.224687] lowmem_reserve[]: 0 0 0 0
[ 1378.224691] Node 0 DMA: 2*4kB (UM) 1*8kB (U) 1*16kB (U) 2*32kB (UM) 1*64kB (U) 2*128kB (UM) 2*256kB (UM) 1*512kB (M) 1*1024kB (U) 0*2048kB 3*4096kB (ME) = 14752kB
[ 1378.224756] Node 0 DMA32: 9*4kB (UM) 7*8kB (UM) 7*16kB (UME) 6*32kB (UME) 4*64kB (UME) 1*128kB (M) 2*256kB (ME) 0*512kB 1*1024kB (U) 1*2048kB (E) 12*4096kB (UM) = 53516kB
[ 1378.224783] Node 0 Normal: 107*4kB (UEH) 68*8kB (UEH) 50*16kB (UMEH) 61*32kB (UEH) 15*64kB (UEH) 12*128kB (UMEH) 19*256kB (UMEH) 10*512kB (UME) 1*1024kB (H) 0*2048kB 0*4096kB = 17228kB
[ 1378.224802] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[ 1378.224803] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 1378.224804] 875607 total pagecache pages
[ 1378.224807] 0 pages in swap cache
[ 1378.224808] Swap cache stats: add 0, delete 0, find 0/0
[ 1378.224809] Free swap = 0kB
[ 1378.224809] Total swap = 0kB
[ 1378.224811] 1048445 pages RAM
[ 1378.224812] 0 pages HighMem/MovableOnly
[ 1378.224813] 116531 pages reserved
[ 1378.224814] 0 pages hwpoisoned
[ 1378.224814] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
[ 1378.224824] [ 476] 0 476 10952 553 24 3 0 -1000 systemd-udevd
[ 1378.224827] [ 486] 0 486 13856 110 26 3 0 -1000 auditd
[ 1378.224830] [ 660] 0 660 26372 247 55 3 0 -1000 sshd
[ 1378.224833] [ 6535] 0 6535 9207 422 21 3 0 0 systemd-journal
[ 1378.224836] [ 6536] 0 6536 6050 78 16 3 0 0 systemd-logind
[ 1378.224839] [ 6537] 0 6537 27511 32 13 3 0 0 agetty
[ 1378.224841] [ 6538] 81 6538 6103 78 17 3 0 -900 dbus-daemon
[ 1378.224930] [ 6855] 1000 6855 4195473 852376 1790 19 0 0 a.out
[ 1378.224935] [ 6862] 0 6862 27511 32 10 3 0 0 agetty
[ 1378.224937] Out of memory: Kill process 6535 (systemd-journal) score 0 or sacrifice child
[ 1378.225006] Killed process 6535 (systemd-journal) total-vm:36828kB, anon-rss:260kB, file-rss:0kB, shmem-rss:1428kB
[ 1378.232809] kworker/u16:2 invoked oom-killer: gfp_mask=0x17080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO|__GFP_NOTRACK), nodemask=(null), order=2, oom_score_adj=0
[ 1378.232814] kworker/u16:2 cpuset=/ mems_allowed=0
[ 1378.232821] CPU: 3 PID: 6523 Comm: kworker/u16:2 Not tainted 4.13.0-rc2-next-20170728 #649
[ 1378.232822] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015
[ 1378.232827] Workqueue: events_unbound call_usermodehelper_exec_work
[ 1378.232829] Call Trace:
[ 1378.232835] dump_stack+0x67/0x9e
[ 1378.232839] dump_header+0x9d/0x3fa
[ 1378.232845] ? trace_hardirqs_on+0xd/0x10
[ 1378.232852] oom_kill_process+0x226/0x650
[ 1378.232859] out_of_memory+0x136/0x560
[ 1378.232860] ? out_of_memory+0x206/0x560
[ 1378.232866] __alloc_pages_nodemask+0xdce/0xeb0
[ 1378.232869] ? copy_process.part.39+0x7eb/0x1e30
[ 1378.232885] copy_process.part.39+0x13f/0x1e30
[ 1378.232888] ? __lock_acquire+0x506/0x1a90
[ 1378.232890] ? load_balance+0x1b0/0xaf0
[ 1378.232898] ? umh_complete+0x30/0x30
[ 1378.232904] _do_fork+0xea/0x5f0
[ 1378.232910] ? native_sched_clock+0x36/0xa0
[ 1378.232919] kernel_thread+0x24/0x30
[ 1378.232922] call_usermodehelper_exec_work+0x35/0xc0
[ 1378.232925] process_one_work+0x1d0/0x3e0
[ 1378.232926] ? process_one_work+0x16a/0x3e0
[ 1378.232934] worker_thread+0x48/0x3c0
[ 1378.232943] kthread+0x10d/0x140
[ 1378.232944] ? process_one_work+0x3e0/0x3e0
[ 1378.232946] ? kthread_create_on_node+0x60/0x60
[ 1378.232951] ret_from_fork+0x27/0x40
[ 1378.232962] Mem-Info:
[ 1378.232965] active_anon:3723 inactive_anon:872923 isolated_anon:0
[ 1378.232965] active_file:34 inactive_file:262 isolated_file:0
[ 1378.232965] unevictable:0 dirty:0 writeback:0 unstable:0
[ 1378.232965] slab_reclaimable:0 slab_unreclaimable:0
[ 1378.232965] mapped:852480 shmem:875026 pagetables:2050 bounce:0
[ 1378.232965] free:21442 free_pcp:442 free_cma:0
[ 1378.232968] Node 0 active_anon:14892kB inactive_anon:3491692kB active_file:136kB inactive_file:1048kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:3409920kB dirty:0kB writeback:0kB shmem:3500104kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
[ 1378.232969] Node 0 DMA free:14752kB min:288kB low:360kB high:432kB active_anon:0kB inactive_anon:1116kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15988kB managed:15904kB mlocked:0kB kernel_stack:0kB pagetables:4kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1378.232972] lowmem_reserve[]: 0 2688 3624 3624
[ 1378.232977] Node 0 DMA32 free:53516kB min:49908kB low:62384kB high:74860kB active_anon:16kB inactive_anon:2682496kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129216kB managed:2752884kB mlocked:0kB kernel_stack:0kB pagetables:5352kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1378.232980] lowmem_reserve[]: 0 0 936 936
[ 1378.232984] Node 0 Normal free:17500kB min:17384kB low:21728kB high:26072kB active_anon:14776kB inactive_anon:808164kB active_file:0kB inactive_file:1436kB unevictable:0kB writepending:0kB present:1048576kB managed:958868kB mlocked:0kB kernel_stack:2736kB pagetables:2844kB bounce:0kB free_pcp:1768kB local_pcp:676kB free_cma:0kB
[ 1378.232987] lowmem_reserve[]: 0 0 0 0
[ 1378.232991] Node 0 DMA: 2*4kB (UM) 1*8kB (U) 1*16kB (U) 2*32kB (UM) 1*64kB (U) 2*128kB (UM) 2*256kB (UM) 1*512kB (M) 1*1024kB (U) 0*2048kB 3*4096kB (ME) = 14752kB
[ 1378.233010] Node 0 DMA32: 9*4kB (UM) 7*8kB (UM) 7*16kB (UME) 6*32kB (UME) 4*64kB (UME) 1*128kB (M) 2*256kB (ME) 0*512kB 1*1024kB (U) 1*2048kB (E) 12*4096kB (UM) = 53516kB
[ 1378.233028] Node 0 Normal: 76*4kB (UEH) 68*8kB (UEH) 53*16kB (UMEH) 61*32kB (UEH) 15*64kB (UEH) 12*128kB (UMEH) 19*256kB (UMEH) 10*512kB (UME) 1*1024kB (H) 0*2048kB 0*4096kB = 17152kB
[ 1378.233047] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[ 1378.233048] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 1378.233049] 875385 total pagecache pages
[ 1378.233052] 0 pages in swap cache
[ 1378.233053] Swap cache stats: add 0, delete 0, find 0/0
[ 1378.233054] Free swap = 0kB
[ 1378.233055] Total swap = 0kB
[ 1378.233056] 1048445 pages RAM
[ 1378.233057] 0 pages HighMem/MovableOnly
[ 1378.233058] 116531 pages reserved
[ 1378.233058] 0 pages hwpoisoned
[ 1378.233059] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
[ 1378.233068] [ 476] 0 476 10952 553 24 3 0 -1000 systemd-udevd
[ 1378.233072] [ 486] 0 486 13856 110 26 3 0 -1000 auditd
[ 1378.233075] [ 660] 0 660 26372 247 55 3 0 -1000 sshd
[ 1378.233079] [ 6536] 0 6536 6050 78 16 3 0 0 systemd-logind
[ 1378.233082] [ 6537] 0 6537 27511 32 13 3 0 0 agetty
[ 1378.233085] [ 6538] 81 6538 6103 78 17 3 0 -900 dbus-daemon
[ 1378.233172] [ 6855] 1000 6855 4195473 852376 1790 19 0 0 a.out
[ 1378.233177] [ 6862] 0 6862 27511 32 10 3 0 0 agetty
[ 1378.233179] Out of memory: Kill process 6536 (systemd-logind) score 0 or sacrifice child
[ 1378.233276] Killed process 6536 (systemd-logind) total-vm:24200kB, anon-rss:308kB, file-rss:4kB, shmem-rss:0kB
[ 1378.236782] kworker/u16:1 invoked oom-killer: gfp_mask=0x17080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO|__GFP_NOTRACK), nodemask=(null), order=2, oom_score_adj=0
[ 1378.236786] kworker/u16:1 cpuset=/ mems_allowed=0
[ 1378.236792] CPU: 0 PID: 6520 Comm: kworker/u16:1 Not tainted 4.13.0-rc2-next-20170728 #649
[ 1378.236793] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015
[ 1378.236797] Workqueue: events_unbound call_usermodehelper_exec_work
[ 1378.236798] Call Trace:
[ 1378.236803] dump_stack+0x67/0x9e
[ 1378.236807] dump_header+0x9d/0x3fa
[ 1378.236812] ? trace_hardirqs_on+0xd/0x10
[ 1378.236819] oom_kill_process+0x226/0x650
[ 1378.236825] out_of_memory+0x136/0x560
[ 1378.236827] ? out_of_memory+0x206/0x560
[ 1378.236832] __alloc_pages_nodemask+0xdce/0xeb0
[ 1378.236834] ? copy_process.part.39+0x7eb/0x1e30
[ 1378.236851] copy_process.part.39+0x13f/0x1e30
[ 1378.236853] ? __lock_acquire+0x506/0x1a90
[ 1378.236861] ? umh_complete+0x30/0x30
[ 1378.236868] _do_fork+0xea/0x5f0
[ 1378.236873] ? native_sched_clock+0x36/0xa0
[ 1378.236882] kernel_thread+0x24/0x30
[ 1378.236885] call_usermodehelper_exec_work+0x35/0xc0
[ 1378.236888] process_one_work+0x1d0/0x3e0
[ 1378.236889] ? process_one_work+0x16a/0x3e0
[ 1378.236897] worker_thread+0x48/0x3c0
[ 1378.236905] kthread+0x10d/0x140
[ 1378.236906] ? process_one_work+0x3e0/0x3e0
[ 1378.236909] ? kthread_create_on_node+0x60/0x60
[ 1378.236913] ret_from_fork+0x27/0x40
[ 1378.236924] Mem-Info:
[ 1378.236927] active_anon:3649 inactive_anon:872923 isolated_anon:0
[ 1378.236927] active_file:34 inactive_file:55 isolated_file:0
[ 1378.236927] unevictable:0 dirty:0 writeback:0 unstable:0
[ 1378.236927] slab_reclaimable:0 slab_unreclaimable:0
[ 1378.236927] mapped:852480 shmem:875026 pagetables:2050 bounce:0
[ 1378.236927] free:21694 free_pcp:471 free_cma:0
[ 1378.236929] Node 0 active_anon:14596kB inactive_anon:3491692kB active_file:136kB inactive_file:220kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:3409920kB dirty:0kB writeback:0kB shmem:3500104kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
[ 1378.236930] Node 0 DMA free:14752kB min:288kB low:360kB high:432kB active_anon:0kB inactive_anon:1116kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15988kB managed:15904kB mlocked:0kB kernel_stack:0kB pagetables:4kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1378.236933] lowmem_reserve[]: 0 2688 3624 3624
[ 1378.236938] Node 0 DMA32 free:53516kB min:49908kB low:62384kB high:74860kB active_anon:16kB inactive_anon:2682496kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129216kB managed:2752884kB mlocked:0kB kernel_stack:0kB pagetables:5352kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1378.236941] lowmem_reserve[]: 0 0 936 936
[ 1378.236945] Node 0 Normal free:18508kB min:17384kB low:21728kB high:26072kB active_anon:14776kB inactive_anon:808164kB active_file:0kB inactive_file:384kB unevictable:0kB writepending:0kB present:1048576kB managed:958868kB mlocked:0kB kernel_stack:2736kB pagetables:2844kB bounce:0kB free_pcp:1884kB local_pcp:716kB free_cma:0kB
[ 1378.236949] lowmem_reserve[]: 0 0 0 0
[ 1378.236953] Node 0 DMA: 2*4kB (UM) 1*8kB (U) 1*16kB (U) 2*32kB (UM) 1*64kB (U) 2*128kB (UM) 2*256kB (UM) 1*512kB (M) 1*1024kB (U) 0*2048kB 3*4096kB (ME) = 14752kB
[ 1378.236972] Node 0 DMA32: 9*4kB (UM) 7*8kB (UM) 7*16kB (UME) 6*32kB (UME) 4*64kB (UME) 1*128kB (M) 2*256kB (ME) 0*512kB 1*1024kB (U) 1*2048kB (E) 12*4096kB (UM) = 53516kB
[ 1378.236990] Node 0 Normal: 216*4kB (UMEH) 89*8kB (UMEH) 71*16kB (UMEH) 66*32kB (UMEH) 16*64kB (UMEH) 12*128kB (UMEH) 19*256kB (UMEH) 10*512kB (UME) 1*1024kB (H) 0*2048kB 0*4096kB = 18392kB
[ 1378.237008] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[ 1378.237009] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 1378.237010] 875163 total pagecache pages
[ 1378.237013] 0 pages in swap cache
[ 1378.237014] Swap cache stats: add 0, delete 0, find 0/0
[ 1378.237015] Free swap = 0kB
[ 1378.237016] Total swap = 0kB
[ 1378.237017] 1048445 pages RAM
[ 1378.237018] 0 pages HighMem/MovableOnly
[ 1378.237018] 116531 pages reserved
[ 1378.237019] 0 pages hwpoisoned
[ 1378.237020] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
[ 1378.237029] [ 476] 0 476 10952 553 24 3 0 -1000 systemd-udevd
[ 1378.237031] [ 486] 0 486 13856 110 26 3 0 -1000 auditd
[ 1378.237034] [ 660] 0 660 26372 247 55 3 0 -1000 sshd
[ 1378.237039] [ 6537] 0 6537 27511 32 13 3 0 0 agetty
[ 1378.237041] [ 6538] 81 6538 6103 78 17 3 0 -900 dbus-daemon
[ 1378.237127] [ 6855] 1000 6855 4195473 852376 1790 19 0 0 a.out
[ 1378.237132] [ 6862] 0 6862 27511 32 10 3 0 0 agetty
[ 1378.237134] Out of memory: Kill process 6537 (agetty) score 0 or sacrifice child
[ 1378.237146] Killed process 6537 (agetty) total-vm:110044kB, anon-rss:124kB, file-rss:4kB, shmem-rss:0kB
[ 1378.247858] kworker/u16:2 invoked oom-killer: gfp_mask=0x17080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO|__GFP_NOTRACK), nodemask=(null), order=2, oom_score_adj=0
[ 1378.247864] kworker/u16:2 cpuset=/ mems_allowed=0
[ 1378.247871] CPU: 3 PID: 6523 Comm: kworker/u16:2 Not tainted 4.13.0-rc2-next-20170728 #649
[ 1378.247872] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015
[ 1378.247879] Workqueue: events_unbound call_usermodehelper_exec_work
[ 1378.247881] Call Trace:
[ 1378.247888] dump_stack+0x67/0x9e
[ 1378.247913] dump_header+0x9d/0x3fa
[ 1378.247924] ? trace_hardirqs_on+0xd/0x10
[ 1378.247931] oom_kill_process+0x226/0x650
[ 1378.247938] out_of_memory+0x136/0x560
[ 1378.247940] ? out_of_memory+0x206/0x560
[ 1378.247945] __alloc_pages_nodemask+0xdce/0xeb0
[ 1378.247948] ? copy_process.part.39+0x7eb/0x1e30
[ 1378.247966] copy_process.part.39+0x13f/0x1e30
[ 1378.247968] ? __lock_acquire+0x506/0x1a90
[ 1378.247971] ? load_balance+0x1b0/0xaf0
[ 1378.248035] ? umh_complete+0x30/0x30
[ 1378.248054] _do_fork+0xea/0x5f0
[ 1378.248060] ? native_sched_clock+0x36/0xa0
[ 1378.248187] kernel_thread+0x24/0x30
[ 1378.248191] call_usermodehelper_exec_work+0x35/0xc0
[ 1378.248194] process_one_work+0x1d0/0x3e0
[ 1378.248225] ? process_one_work+0x16a/0x3e0
[ 1378.248234] worker_thread+0x48/0x3c0
[ 1378.248265] kthread+0x10d/0x140
[ 1378.248267] ? process_one_work+0x3e0/0x3e0
[ 1378.248269] ? kthread_create_on_node+0x60/0x60
[ 1378.248274] ret_from_fork+0x27/0x40
[ 1378.248301] Mem-Info:
[ 1378.248304] active_anon:3649 inactive_anon:872923 isolated_anon:0
[ 1378.248304] active_file:34 inactive_file:18 isolated_file:0
[ 1378.248304] unevictable:0 dirty:0 writeback:0 unstable:0
[ 1378.248304] slab_reclaimable:0 slab_unreclaimable:0
[ 1378.248304] mapped:852443 shmem:875026 pagetables:2050 bounce:0
[ 1378.248304] free:21820 free_pcp:444 free_cma:0
[ 1378.248307] Node 0 active_anon:14596kB inactive_anon:3491692kB active_file:136kB inactive_file:72kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:3409772kB dirty:0kB writeback:0kB shmem:3500104kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
[ 1378.248308] Node 0 DMA free:14752kB min:288kB low:360kB high:432kB active_anon:0kB inactive_anon:1116kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15988kB managed:15904kB mlocked:0kB kernel_stack:0kB pagetables:4kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1378.248312] lowmem_reserve[]: 0 2688 3624 3624
[ 1378.248316] Node 0 DMA32 free:53516kB min:49908kB low:62384kB high:74860kB active_anon:16kB inactive_anon:2682496kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129216kB managed:2752884kB mlocked:0kB kernel_stack:0kB pagetables:5352kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1378.248319] lowmem_reserve[]: 0 0 936 936
[ 1378.248324] Node 0 Normal free:19012kB min:17384kB low:21728kB high:26072kB active_anon:14776kB inactive_anon:808164kB active_file:0kB inactive_file:384kB unevictable:0kB writepending:0kB present:1048576kB managed:958868kB mlocked:0kB kernel_stack:2736kB pagetables:2844kB bounce:0kB free_pcp:1776kB local_pcp:692kB free_cma:0kB
[ 1378.248326] lowmem_reserve[]: 0 0 0 0
[ 1378.248331] Node 0 DMA: 2*4kB (UM) 1*8kB (U) 1*16kB (U) 2*32kB (UM) 1*64kB (U) 2*128kB (UM) 2*256kB (UM) 1*512kB (M) 1*1024kB (U) 0*2048kB 3*4096kB (ME) = 14752kB
[ 1378.248350] Node 0 DMA32: 9*4kB (UM) 7*8kB (UM) 7*16kB (UME) 6*32kB (UME) 4*64kB (UME) 1*128kB (M) 2*256kB (ME) 0*512kB 1*1024kB (U) 1*2048kB (E) 12*4096kB (UM) = 53516kB
[ 1378.248368] Node 0 Normal: 285*4kB (UMEH) 92*8kB (UMEH) 77*16kB (UMEH) 69*32kB (UMEH) 18*64kB (UMEH) 12*128kB (UMEH) 19*256kB (UMEH) 10*512kB (UME) 1*1024kB (H) 0*2048kB 0*4096kB = 19012kB
[ 1378.248387] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[ 1378.248388] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 1378.248389] 875052 total pagecache pages
[ 1378.248392] 0 pages in swap cache
[ 1378.248393] Swap cache stats: add 0, delete 0, find 0/0
[ 1378.248394] Free swap = 0kB
[ 1378.248395] Total swap = 0kB
[ 1378.248396] 1048445 pages RAM
[ 1378.248397] 0 pages HighMem/MovableOnly
[ 1378.248398] 116531 pages reserved
[ 1378.248399] 0 pages hwpoisoned
[ 1378.248400] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
[ 1378.248412] [ 476] 0 476 10952 553 24 3 0 -1000 systemd-udevd
[ 1378.248416] [ 486] 0 486 13856 110 26 3 0 -1000 auditd
[ 1378.248419] [ 660] 0 660 26372 247 55 3 0 -1000 sshd
[ 1378.248426] [ 6538] 81 6538 6103 78 17 3 0 -900 dbus-daemon
[ 1378.248527] [ 6855] 1000 6855 4195473 852376 1790 19 0 0 a.out
[ 1378.248533] [ 6862] 0 6862 27511 32 10 3 0 0 agetty
[ 1378.248535] Out of memory: Kill process 6862 (agetty) score 0 or sacrifice child
[ 1378.248566] Killed process 6862 (agetty) total-vm:110044kB, anon-rss:124kB, file-rss:4kB, shmem-rss:0kB
[ 1378.252379] kworker/u16:26 invoked oom-killer: gfp_mask=0x17080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO|__GFP_NOTRACK), nodemask=(null), order=2, oom_score_adj=0
[ 1378.252384] kworker/u16:26 cpuset=/ mems_allowed=0
[ 1378.252390] CPU: 0 PID: 353 Comm: kworker/u16:26 Not tainted 4.13.0-rc2-next-20170728 #649
[ 1378.252391] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015
[ 1378.252396] Workqueue: events_unbound call_usermodehelper_exec_work
[ 1378.252397] Call Trace:
[ 1378.252402] dump_stack+0x67/0x9e
[ 1378.252407] dump_header+0x9d/0x3fa
[ 1378.252413] ? trace_hardirqs_on+0xd/0x10
[ 1378.252420] oom_kill_process+0x226/0x650
[ 1378.252426] out_of_memory+0x136/0x560
[ 1378.252428] ? out_of_memory+0x206/0x560
[ 1378.252433] __alloc_pages_nodemask+0xdce/0xeb0
[ 1378.252436] ? copy_process.part.39+0x7eb/0x1e30
[ 1378.252453] copy_process.part.39+0x13f/0x1e30
[ 1378.252455] ? __lock_acquire+0x506/0x1a90
[ 1378.252458] ? load_balance+0x1b0/0xaf0
[ 1378.252465] ? umh_complete+0x30/0x30
[ 1378.252472] _do_fork+0xea/0x5f0
[ 1378.252477] ? native_sched_clock+0x36/0xa0
[ 1378.252487] kernel_thread+0x24/0x30
[ 1378.252490] call_usermodehelper_exec_work+0x35/0xc0
[ 1378.252493] process_one_work+0x1d0/0x3e0
[ 1378.252494] ? process_one_work+0x16a/0x3e0
[ 1378.252502] worker_thread+0x48/0x3c0
[ 1378.252510] kthread+0x10d/0x140
[ 1378.252511] ? process_one_work+0x3e0/0x3e0
[ 1378.252514] ? kthread_create_on_node+0x60/0x60
[ 1378.252519] ret_from_fork+0x27/0x40
[ 1378.252530] Mem-Info:
[ 1378.252533] active_anon:3649 inactive_anon:872923 isolated_anon:0
[ 1378.252533] active_file:34 inactive_file:0 isolated_file:0
[ 1378.252533] unevictable:0 dirty:0 writeback:0 unstable:0
[ 1378.252533] slab_reclaimable:0 slab_unreclaimable:0
[ 1378.252533] mapped:852443 shmem:875026 pagetables:2050 bounce:0
[ 1378.252533] free:21820 free_pcp:501 free_cma:0
[ 1378.252535] Node 0 active_anon:14596kB inactive_anon:3491692kB active_file:136kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:3409772kB dirty:0kB writeback:0kB shmem:3500104kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
[ 1378.252536] Node 0 DMA free:14752kB min:288kB low:360kB high:432kB active_anon:0kB inactive_anon:1116kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15988kB managed:15904kB mlocked:0kB kernel_stack:0kB pagetables:4kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1378.252539] lowmem_reserve[]: 0 2688 3624 3624
[ 1378.252544] Node 0 DMA32 free:53516kB min:49908kB low:62384kB high:74860kB active_anon:16kB inactive_anon:2682496kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129216kB managed:2752884kB mlocked:0kB kernel_stack:0kB pagetables:5352kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1378.252547] lowmem_reserve[]: 0 0 936 936
[ 1378.252551] Node 0 Normal free:19012kB min:17384kB low:21728kB high:26072kB active_anon:14776kB inactive_anon:808164kB active_file:0kB inactive_file:384kB unevictable:0kB writepending:0kB present:1048576kB managed:958868kB mlocked:0kB kernel_stack:2736kB pagetables:2844kB bounce:0kB free_pcp:2004kB local_pcp:668kB free_cma:0kB
[ 1378.252554] lowmem_reserve[]: 0 0 0 0
[ 1378.252559] Node 0 DMA: 2*4kB (UM) 1*8kB (U) 1*16kB (U) 2*32kB (UM) 1*64kB (U) 2*128kB (UM) 2*256kB (UM) 1*512kB (M) 1*1024kB (U) 0*2048kB 3*4096kB (ME) = 14752kB
[ 1378.252578] Node 0 DMA32: 9*4kB (UM) 7*8kB (UM) 7*16kB (UME) 6*32kB (UME) 4*64kB (UME) 1*128kB (M) 2*256kB (ME) 0*512kB 1*1024kB (U) 1*2048kB (E) 12*4096kB (UM) = 53516kB
[ 1378.252596] Node 0 Normal: 271*4kB (UMEH) 97*8kB (UMEH) 79*16kB (UMEH) 69*32kB (UMEH) 18*64kB (UMEH) 12*128kB (UMEH) 19*256kB (UMEH) 10*512kB (UME) 1*1024kB (H) 0*2048kB 0*4096kB = 19028kB
[ 1378.252614] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[ 1378.252616] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 1378.252617] 875015 total pagecache pages
[ 1378.252620] 0 pages in swap cache
[ 1378.252621] Swap cache stats: add 0, delete 0, find 0/0
[ 1378.252622] Free swap = 0kB
[ 1378.252622] Total swap = 0kB
[ 1378.252624] 1048445 pages RAM
[ 1378.252625] 0 pages HighMem/MovableOnly
[ 1378.252626] 116531 pages reserved
[ 1378.252627] 0 pages hwpoisoned
[ 1378.252628] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
[ 1378.252634] [ 476] 0 476 10952 553 24 3 0 -1000 systemd-udevd
[ 1378.252638] [ 486] 0 486 13856 110 26 3 0 -1000 auditd
[ 1378.252641] [ 660] 0 660 26372 247 55 3 0 -1000 sshd
[ 1378.252646] [ 6538] 81 6538 6103 78 17 3 0 -900 dbus-daemon
[ 1378.252859] [ 6855] 1000 6855 4195473 852376 1790 19 0 0 a.out
[ 1378.252866] Out of memory: Kill process 6538 (dbus-daemon) score 0 or sacrifice child
[ 1378.252879] Killed process 6538 (dbus-daemon) total-vm:24412kB, anon-rss:312kB, file-rss:0kB, shmem-rss:0kB
[ 1379.068645] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 1379.068647] 875105 total pagecache pages
[ 1379.068650] 0 pages in swap cache
[ 1379.068651] Swap cache stats: add 0, delete 0, find 0/0
[ 1379.068652] Free swap = 0kB
[ 1379.068653] Total swap = 0kB
[ 1379.068655] 1048445 pages RAM
[ 1379.068656] 0 pages HighMem/MovableOnly
[ 1379.068656] 116531 pages reserved
[ 1379.068657] 0 pages hwpoisoned
[ 1379.101641] kworker/u16:29 invoked oom-killer: gfp_mask=0x17080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO|__GFP_NOTRACK), nodemask=(null), order=2, oom_score_adj=0
[ 1379.105795] kworker/u16:29 cpuset=/ mems_allowed=0
[ 1379.107976] CPU: 0 PID: 356 Comm: kworker/u16:29 Not tainted 4.13.0-rc2-next-20170728 #649
[ 1379.110761] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015
[ 1379.114084] Workqueue: events_unbound call_usermodehelper_exec_work
[ 1379.116440] Call Trace:
[ 1379.117938] dump_stack+0x67/0x9e
[ 1379.119603] dump_header+0x9d/0x3fa
[ 1379.121301] out_of_memory+0x470/0x560
[ 1379.122979] ? out_of_memory+0x206/0x560
[ 1379.124689] __alloc_pages_nodemask+0xdce/0xeb0
[ 1379.126519] ? copy_process.part.39+0x7eb/0x1e30
[ 1379.128346] copy_process.part.39+0x13f/0x1e30
[ 1379.130084] ? __lock_acquire+0x506/0x1a90
[ 1379.131719] ? umh_complete+0x30/0x30
[ 1379.133265] _do_fork+0xea/0x5f0
[ 1379.134689] ? native_sched_clock+0x36/0xa0
[ 1379.136239] kernel_thread+0x24/0x30
[ 1379.137628] call_usermodehelper_exec_work+0x35/0xc0
[ 1379.139364] process_one_work+0x1d0/0x3e0
[ 1379.140857] ? process_one_work+0x16a/0x3e0
[ 1379.142361] worker_thread+0x48/0x3c0
[ 1379.143813] kthread+0x10d/0x140
[ 1379.145138] ? process_one_work+0x3e0/0x3e0
[ 1379.146657] ? kthread_create_on_node+0x60/0x60
[ 1379.148252] ret_from_fork+0x27/0x40
[ 1379.149659] Mem-Info:
[ 1379.151818] active_anon:3493 inactive_anon:872905 isolated_anon:0
[ 1379.151818] active_file:44 inactive_file:82 isolated_file:0
[ 1379.151818] unevictable:0 dirty:0 writeback:0 unstable:0
[ 1379.151818] slab_reclaimable:0 slab_unreclaimable:0
[ 1379.151818] mapped:532931 shmem:875026 pagetables:1923 bounce:0
[ 1379.151818] free:21712 free_pcp:565 free_cma:0
[ 1379.163532] Node 0 active_anon:13972kB inactive_anon:3491620kB active_file:176kB inactive_file:204kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:1943792kB dirty:0kB writeback:0kB shmem:3500104kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
[ 1379.171228] Node 0 DMA free:14752kB min:288kB low:360kB high:432kB active_anon:0kB inactive_anon:1116kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15988kB managed:15904kB mlocked:0kB kernel_stack:0kB pagetables:4kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1379.178826] lowmem_reserve[]: 0 2688 3624 3624
[ 1379.180764] Node 0 DMA32 free:53516kB min:49908kB low:62384kB high:74860kB active_anon:16kB inactive_anon:2682496kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129216kB managed:2752884kB mlocked:0kB kernel_stack:0kB pagetables:5352kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 1379.188610] lowmem_reserve[]: 0 0 936 936
[ 1379.191335] Node 0 Normal free:19124kB min:17384kB low:21728kB high:26072kB active_anon:13956kB inactive_anon:808008kB active_file:100kB inactive_file:516kB unevictable:0kB writepending:0kB present:1048576kB managed:958868kB mlocked:0kB kernel_stack:2640kB pagetables:2336kB bounce:0kB free_pcp:2156kB local_pcp:540kB free_cma:0kB
[ 1379.200442] lowmem_reserve[]: 0 0 0 0
[ 1379.202105] Node 0 DMA: 2*4kB (UM) 1*8kB (U) 1*16kB (U) 2*32kB (UM) 1*64kB (U) 2*128kB (UM) 2*256kB (UM) 1*512kB (M) 1*1024kB (U) 0*2048kB 3*4096kB (ME) = 14752kB
[ 1379.207076] Node 0 DMA32: 9*4kB (UM) 7*8kB (UM) 7*16kB (UME) 6*32kB (UME) 4*64kB (UME) 1*128kB (M) 2*256kB (ME) 0*512kB 1*1024kB (U) 1*2048kB (E) 12*4096kB (UM) = 53516kB
[ 1379.212387] Node 0 Normal: 72*4kB (UMEH) 108*8kB (UMEH) 97*16kB (UMEH) 83*32kB (UMEH) 21*64kB (UMEH) 12*128kB (UMEH) 19*256kB (UMEH) 10*512kB (UME) 1*1024kB (H) 0*2048kB 0*4096kB = 19248kB
[ 1379.217936] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[ 1379.220795] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 1379.223635] 875203 total pagecache pages
[ 1379.225549] 0 pages in swap cache
[ 1379.228278] Swap cache stats: add 0, delete 0, find 0/0
[ 1379.230716] Free swap = 0kB
[ 1379.232374] Total swap = 0kB
[ 1379.233975] 1048445 pages RAM
[ 1379.235603] 0 pages HighMem/MovableOnly
[ 1379.237382] 116531 pages reserved
[ 1379.239170] 0 pages hwpoisoned
[ 1379.240891] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
[ 1379.243705] [ 476] 0 476 10952 553 24 3 0 -1000 systemd-udevd
[ 1379.246883] [ 486] 0 486 13856 110 26 3 0 -1000 auditd
[ 1379.249890] [ 660] 0 660 26372 247 55 3 0 -1000 sshd
[ 1379.253002] Kernel panic - not syncing: Out of memory and no killable processes...
[ 1379.253002]
[ 1379.256943] CPU: 0 PID: 356 Comm: kworker/u16:29 Not tainted 4.13.0-rc2-next-20170728 #649
[ 1379.259739] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015
[ 1379.263081] Workqueue: events_unbound call_usermodehelper_exec_work
[ 1379.265496] Call Trace:
[ 1379.267085] dump_stack+0x67/0x9e
[ 1379.268897] panic+0xe5/0x23f
[ 1379.270588] out_of_memory+0x47e/0x560
[ 1379.272475] ? out_of_memory+0x206/0x560
[ 1379.274397] __alloc_pages_nodemask+0xdce/0xeb0
[ 1379.276422] ? copy_process.part.39+0x7eb/0x1e30
[ 1379.278475] copy_process.part.39+0x13f/0x1e30
[ 1379.280491] ? __lock_acquire+0x506/0x1a90
[ 1379.282561] ? umh_complete+0x30/0x30
[ 1379.284514] _do_fork+0xea/0x5f0
[ 1379.286341] ? native_sched_clock+0x36/0xa0
[ 1379.288370] kernel_thread+0x24/0x30
----------
>
> > If a multi-threaded process which consumes little memory was
> > selected as an OOM victim (and reaped by the OOM reaper and MMF_OOM_SKIP
> > was set immediately), it might be still possible to select next OOM victims
> > needlessly.
>
> This would be true if the address space itself only contained a little
> amount of memory and the large part of the memory was in page tables or
> other resources which oom_reaper cannot work with. This is not a usual
> case though.
mlock()ing whole memory needs CAP_IPC_LOCK, but consuming whole memory as
MAP_SHARED does not need CAP_IPC_LOCK. And I think we can relax MMF_OOM_SKIP
test in task_will_free_mem() to ignore MMF_OOM_SKIP for once, for "mm, oom:
do not grant oom victims full memory reserves access" might be too large change
for older kernels which next version of LTS distributions would choose.