Re: Possible race condition in oom-killer
From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Date: 2017-08-01 10:46:56
Also in:
lkml
Michal Hocko wrote:
quoted
quoted
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
----------
quoted
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. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>