login as: root
root@10.0.50.100's password:
# cd /jffs2/
# date && ./memtester 900M
Thu Jul 14 07:45:55 UTC 2022
memtester version 4.3.0 (32-bit)
Copyright (C) 2001-2012 Charles Cazabon.
Licensed under the GNU General Public License version 2 (only).

pagesize is 4096
pagesizemask is 0xfffff000
want 900MB (943718400 bytes)
got  900MB (943718400 bytes), trying mlock ...locked.
Loop 1:
  Stuck Address       : testing  11FAILURE: possible bad address line at offset 0x0f586000.
Skipping to next test...
  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          : testing   3FAILURE: 0xff00ff00 != 0x00000000 at offset 0x03ee6010.
FAILURE: 0x00ff00ff != 0xffffffff at offset 0x03ee6014.
FAILURE: 0xff00ff00 != 0x00000000 at offset 0x03ee6018.
  Block Sequential    : setting   0