Jul 20 10:59:22 server2 kernel: mariadbd invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0
Jul 20 10:59:22 server2 kernel: mariadbd cpuset=/ mems_allowed=0-1
Jul 20 10:59:22 server2 kernel: CPU: 10 PID: 663 Comm: mariadbd Not tainted 3.10.0-693.11.6.el7.x86_64 #1
Jul 20 10:59:22 server2 kernel: Hardware name: Supermicro X9DRW/X9DRW, BIOS 1.0b 10/11/2012
Jul 20 10:59:22 server2 kernel: Call Trace:
Jul 20 10:59:22 server2 kernel: [<ffffffff816a5ea1>] dump_stack+0x19/0x1b
Jul 20 10:59:22 server2 kernel: [<ffffffff816a1296>] dump_header+0x90/0x229
Jul 20 10:59:22 server2 kernel: [<ffffffff811f57be>] ? mem_cgroup_reclaim+0x4e/0x120
Jul 20 10:59:22 server2 kernel: [<ffffffff81187be6>] ? find_lock_task_mm+0x56/0xc0
Jul 20 10:59:22 server2 kernel: [<ffffffff811f34c8>] ? try_get_mem_cgroup_from_mm+0x28/0x60
Jul 20 10:59:22 server2 kernel: [<ffffffff81188094>] oom_kill_process+0x254/0x3d0
Jul 20 10:59:22 server2 kernel: [<ffffffff811f71e6>] mem_cgroup_oom_synchronize+0x546/0x570
Jul 20 10:59:22 server2 kernel: [<ffffffff811f6660>] ? mem_cgroup_charge_common+0xc0/0xc0
Jul 20 10:59:22 server2 kernel: [<ffffffff81188924>] pagefault_out_of_memory+0x14/0x90
Jul 20 10:59:22 server2 kernel: [<ffffffff8169f65e>] mm_fault_error+0x68/0x12b
Jul 20 10:59:22 server2 kernel: [<ffffffff816b3a21>] __do_page_fault+0x391/0x450
Jul 20 10:59:22 server2 kernel: [<ffffffff816b3b15>] do_page_fault+0x35/0x90
Jul 20 10:59:22 server2 kernel: [<ffffffff816afcda>] ? error_swapgs+0x13b/0x18d
Jul 20 10:59:22 server2 kernel: [<ffffffff816af8f8>] page_fault+0x28/0x30
Jul 20 10:59:22 server2 kernel: Task in /system.slice/mariadb.service killed as a result of limit of /system.slice/mariadb.service
Jul 20 10:59:22 server2 kernel: memory: usage 73400320kB, limit 73400320kB, failcnt 89692
Jul 20 10:59:22 server2 kernel: memory+swap: usage 74856160kB, limit 9007199254740988kB, failcnt 0
Jul 20 10:59:22 server2 kernel: kmem: usage 0kB, limit 9007199254740988kB, failcnt 0
Jul 20 10:59:22 server2 kernel: Memory cgroup stats for /system.slice/mariadb.service: cache:168KB rss:73400152KB rss_huge:13205504KB mapped_file:4KB swap:1455840KB inactive_anon:4082672KB active_anon:69317552KB inactive_file:112KB active_file:56KB unevictable:0KB
Jul 20 10:59:22 server2 kernel: [ pid ]   uid  tgid total_vm      rss nr_ptes swapents oom_score_adj name
Jul 20 10:59:22 server2 kernel: [  610]    27   610 24044073 18230535   37077   486956             0 mariadbd
Jul 20 10:59:22 server2 kernel: Memory cgroup out of memory: Kill process 721 (mariadbd) score 917 or sacrifice child
Jul 20 10:59:22 server2 kernel: Killed process 610 (mariadbd) total-vm:96176292kB, anon-rss:72906568kB, file-rss:15572kB, shmem-rss:0kB
Jul 20 10:59:34 server2 systemd: mariadb.service: main process exited, code=killed, status=9/KILL
Jul 20 10:59:34 server2 systemd: Unit mariadb.service entered failed state.
Jul 20 10:59:34 server2 systemd: mariadb.service failed.