[maemo-developers] [maemo-developers] RE: defective memory?

[From: Frantisek Dufka]

Olivier ROLAND wrote:
> Siarhei Siamashka a écrit :
>> On 9/19/06, Kimmo Hämäläinen <kimmo.hamalainen at nokia.com> wrote:
>>
>>> Yes, it would need to be reproducible in several different devices. The
>>> guy here that tried to reproduce it currently thinks that Siarhei's unit
>>> is broken.
>>
> If your device is broken then mine is also.

And mine too.


Nokia770-26:~# ./memtester 40 1
memtester version 4.0.5 (32-bit)
Copyright (C) 2005 Charles Cazabon.
Licensed under the GNU General Public License version 2 (only).

pagesize is 4096
pagesizemask is 0xfffff000
want 40MB (41943040 bytes)
got  40MB (41943040 bytes), virtual address=0x41131000, trying mlock 
...locked.
Loop 1/1:
   Stuck Address       : testing   0FAILURE: possible bad address line 
at offset 0x0029b1a5 (page offset 1a5).
Skipping to next test...
   Random Value        : FAILURE: 0x5df90000 != 0x5df900cb at offset 
0x0029b1a5 (page offset 1a5).
FAILURE: 0xa7830000 != 0xa783e258 at offset 0x0029b1a5 (page offset 1a5).
   Compare XOR         : FAILURE: 0xf086b165 != 0xf08793bd at offset 
0x0029b1a5 (page offset 1a5).
   Compare SUB         : FAILURE: 0x333c0000 != 0xfd3b5e62 at offset 
0x0029b1a5 (page offset 1a5).
   Compare MUL         :   Compare DIV         : ok
FAILURE: 0x7feb0000 != 0x7febf0e8 at offset 0x0029b1a5 (page offset 1a5).
   Compare OR          : FAILURE: 0x7b690000 != 0x7b69b068 at offset 
0x0029b1a5 (page offset 1a5).
   Compare AND         : FAILURE: 0xfdcc0000 != 0xfdccec72 at offset 
0x0029b1a5 (page offset 1a5).
   Sequential Increment:   Solid Bits          : testing   1FAILURE: 
0xffff0000 != 0xffffffff at offset 0x0029b1a5 (page offset 1a5).
   Block Sequential    : testing   1FAILURE: 0x01010000 != 0x01010101 at 
offset 0x0029b1a5 (page offset 1a5).
   Checkerboard        : testing   0FAILURE: 0xaaaa0000 != 0xaaaaaaaa at 
offset 0x0029b1a5 (page offset 1a5).
   Bit Spread          : testing   0FAILURE: 0xffff0000 != 0xfffffffa at 
offset 0x0029b1a5 (page offset 1a5).
   Bit Flip            : testing   0FAILURE: 0x00000000 != 0x00000001 at 
offset 0x0029b1a5 (page offset 1a5).
   Walking Ones        : testing   0FAILURE: 0xffff0000 != 0xfffffffe at 
offset 0x0029b1a5 (page offset 1a5).
   Walking Zeroes      : testing   0Killed
Nokia770-26:~# Connection to n770 closed by remote host.
Connection to n770 closed.

This was done via ssh over wi-fi when the battery icon was already red. 
Few tenths of seconds later device powered down due to empty battery.

Also did it ~30 minutes before when the battery meter was still grey 
over bluetooth PAN and the test went fine.

Looks like combination with wi-fi.

Frantisek