On 2/28/14 6:16 PM, Gkpetrak wrote:
Hello,
I was trying to process Images with some python scripts, when I
receive bus error. After that I had many bus errors on different programs.
Finally I tried to start django' development server, and I received
the same error.
The "after that I had many bus errors on different programs" is the clue
that perhaps your physical memory has a bad spot.
Your image processing might have used more physical memory than your
typical computer load uses, and ended up in a bad part of memory.
I would recommend running an intensive memory test (e.g. memtest86+) to
isolate which memory chip is at fault, and either yank it or replace it.
hth
- Tom
I know that this error happens when a process is trying to access memory
that the CPU cannot physically address.
I checked my log files and the output of the error is the following:
T02:13:26.879355+02:00 suse-pc kernel: [ 9976.488797] ata1.00: exception Emask
0x0 SAct 0x1 SErr 0x0 action 0x0
2014-03-01T02:13:26.879402+02:00 suse-pc kernel: [ 9976.488806] ata1.00:
irq_stat 0x40000008
2014-03-01T02:13:26.879413+02:00 suse-pc kernel: [ 9976.488813] ata1.00: failed
command: READ FPDMA QUEUED
2014-03-01T02:13:26.879419+02:00 suse-pc kernel: [
9976.488826] ata1.00: cmd 60/08:00:50:8d:75/00:00:39:00:00/40 tag 0 ncq
4096 in
2014-03-01T02:13:26.879428+02:00 suse-pc kernel: [
9976.488826] res 41/40:08:51:8d:75/00:00:39:00:00/00 Emask
0x409 (mediaerror) <F>
2014-03-01T02:13:26.879434+02:00 suse-pc kernel: [ 9976.488832] ata1.00:
status: { DRDY ERR }
2014-03-01T02:13:26.879437+02:00 suse-pc kernel: [ 9976.488836] ata1.00:error:
{ UNC }
2014-03-01T02:13:26.948294+02:00 suse-pc kernel: [ 9976.557999] ata1.00:
configured for UDMA/133
2014-03-01T02:13:26.948313+02:00 suse-pc kernel: [ 9976.558034] sd 0:0:0:0:
[sda] Unhandled sense code
2014-03-01T02:13:26.948315+02:00 suse-pc kernel: [ 9976.558040] sd 0:0:0:0:
[sda]
2014-03-01T02:13:26.948316+02:00 suse-pc kernel: [ 9976.558044] Result:
hostbyte=DID_OK driverbyte=DRIVER_SENSE
2014-03-01T02:13:26.948317+02:00 suse-pc kernel: [ 9976.558048] sd 0:0:0:0:
[sda]
2014-03-01T02:13:26.948318+02:00 suse-pc kernel: [ 9976.558052] Sense Key :
MediumError [current] [descriptor]
2014-03-01T02:13:26.948320+02:00 suse-pc kernel: [ 9976.558059] Descriptor
sense data with sense descriptors (in hex):
2014-03-01T02:13:26.948321+02:00 suse-pc kernel: [ 9976.558062] 72 03
11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
2014-03-01T02:13:26.948321+02:00 suse-pc kernel: [ 9976.558081] 39 75
8d 51
2014-03-01T02:13:26.948335+02:00 suse-pc kernel: [ 9976.558090] sd 0:0:0:0:
[sda]
2014-03-01T02:13:26.948338+02:00 suse-pc kernel: [ 9976.558095] Add. Sense:
Unrecovered readerror - auto reallocate failed
2014-03-01T02:13:26.948339+02:00 suse-pc kernel: [ 9976.558099] sd 0:0:0:0:
[sda] CDB:
2014-03-01T02:13:26.948340+02:00 suse-pc kernel: [ 9976.558102] Read(10): 28 00
39 75 8d 50 00 00 08 00
2014-03-01T02:13:26.948341+02:00 suse-pc kernel: [ 9976.558119] end_request:
I/Oerror, dev sda, sector 964005201
2014-03-01T02:13:26.948342+02:00 suse-pc kernel: [ 9976.558207] ata1: EH
complete
Any ideas ?
How can I fix it ?
Regards,
George
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