Comment 29 for bug 1818494

Well no obvious memory problem:

$ free -h
              total used free shared buff/cache available
Mem: 7.7G 385M 6.7G 38M 623M 7.0G
Swap: 2.0G 0B 2.0G
$ sudo memtester 7G 2
memtester version 4.3.0 (64-bit)
Copyright (C) 2001-2012 Charles Cazabon.
Licensed under the GNU General Public License version 2 (only).

pagesize is 4096
pagesizemask is 0xfffffffffffff000
want 7168MB (7516192768 bytes)
got 7168MB (7516192768 bytes), trying mlock ...locked.
Loop 1/2:
  Stuck Address : ok
  Random Value : ok
  Compare XOR : ok
  Compare SUB : ok
  Compare MUL : ok
  Compare DIV : ok
  Compare OR : ok
  Compare AND : ok
  Sequential Increment: ok
  Solid Bits : ok
  Block Sequential : ok
  Checkerboard : ok
  Bit Spread : ok
  Bit Flip : ok
  Walking Ones : ok
  Walking Zeroes : ok
  8-bit Writes : ok
  16-bit Writes : ok

Loop 2/2:
  Stuck Address : ok
  Random Value : ok
  Compare XOR : ok
  Compare SUB : ok
  Compare MUL : ok
  Compare DIV : ok
  Compare OR : ok
  Compare AND : ok
  Sequential Increment: ok
  Solid Bits : ok
  Block Sequential : ok
  Checkerboard : ok
  Bit Spread : ok
  Bit Flip : ok
  Walking Ones : ok
  Walking Zeroes : ok
  8-bit Writes : ok
  16-bit Writes : ok

Done.