Hello.

I have a RaspberryPi device model B+. I got a task 06no10af.5689.1703.9.36.86
but twice I catch an error:

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.542650] Internal error: Oops - undefined instruction: 0 [#1] PREEMPT ARM

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.648012] Process setiathome_8.02 (pid: 2193, stack limit = 0xde2161b0)

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.655823] Stack: (0xde217eb0 to 0xde218000)

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.661216] 7ea0: de217ec0 bee76458 de216000 c0009794

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.671500] 7ec0: 00000000 bee76368 00000000 c0010a8c 5ac3c35a de217fb0 bee76368 c0010ee8

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.681797] 7ee0: 000d5378 14000000 0021b940 00000000 00000000 0000000e 00000000 00000080

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.692125] 7f00: 00000000 00000000 00000000 00000000 00000002 00000000 de216000 00000000

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.702473] 7f20: 00000000 00000001 00000001 00015220 00000003 c05ff75c c0628a91 c0055fec

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.712870] 7f40: 00000011 00010000 00000001 c05ff75c de216000 00000000 00000040 002f1f60

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.723387] 7f60: 002eff31 002efe08 002e8958 c00560ec ee087aa7 0000000e de216018 de216000

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.733992] 7f80: 00000000 de217fb0 00000000 de216000 002efe08 c00111d8 00000000 0002b410

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.744703] 7fa0: 80000010 f200b200 00000040 c000df00 00b4806c bee766cc 0000002d 00b48080

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.755474] 7fc0: 00b47f80 0000000e 00b48088 00000040 002f1f60 002eff31 002efe08 002e8958

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.766296] 7fe0: 00b48138 bee76658 0002b3b8 0002b410 80000010 ffffffff 00000000 00000000

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.849143] Code: e1a0f00e e1a0200d e1a0e009 eafffe89 (eca00b20)

I have to abort this task and to pause receiving new tasks.

If you want some more information about my system - please contact me anytime.

Thanks

Message from syslogd@raspberrypi at Apr 18 15:35:03 ...
kernel:[ 4708.542650] Internal error: Oops - undefined instruction: 0 [#1] PREEMPT ARM

Yes, It's a known problem on the the Armv6 Pi, seems to have been introduced with the 6.12.x kernel, and hasn't been fully fixed yet.

Claggy

Hey Vitalii,

Are you running Raspbian? I am. I successfully ran a unit on my Raspberry Pi Model B+. Before I installed boinc I did :

sudo apt-get update
sudo apt-get dist-upgrade

This way I had the latest of Raspbian.

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The Universe is not only stranger than you imagine, it's stranger than you can imagine.

SETI@home classic workunits 1,405 CPU time 57,318 hours

I'll try this. Thanks.
Actually before my RaspberryPi have successfully finished one task.
And only on the second one I got this error.
So maybe this problem appears only when processing some special kind of data in tasks.

Interesting. I processed one workunit with the Pi and then quit.

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The Universe is not only stranger than you imagine, it's stranger than you can imagine.

SETI@home classic workunits 1,405 CPU time 57,318 hours

I've updated my Raspbian as you mentioned but today I've got the same error.

As an aside, there is an option to overclock the Pi2 from 900 to 1000 MHz. Noting that the chips were already pretty hot already running SETI at 900 MHz, I bought a couple of heatsinks, fitted them and dialled in the overclock. This resulted in 6 invalids and a hang.
Dialling back to 900 seemed to get things to validate again. So overclocking isn't recommended but those heatsinks were only £2 off ebay so probably worth fitting anyway.

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My PI (not Pi2) is overclocked to 1GHz and it's temperature is 46 Celsius degrees. I can't say that the device is overheated.

Just checking the low hanging fruit.

Do you have a decent quality power supply?
Does it supply enough amps? For a Pi they seem to recommend ~700mA - 1.8A depending on model.
Does it supply 5v, +-5% tolerance?
Do you have anything plugged into the USB ports?

Have you tried stress testing the Pi to check its stability?

sudo apt-get install stress-ng

sudo stress-ng --cpu 4 --vm-bytes 10m --metrics -t 1d

You can try running that for a couple of hours to see. It is also kind of a litmus test of your power supply.

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You can try running that for a couple of hours to see. It is also kind of a litmus test of your power supply.

I'll do this later today. I also what to say that I run Einstein tasks for a year on this device without any error during all period. And even now when Pi runs Einstein tasks all is OK.
But maybe after a year my power supply is not so good as before.
I'll left the message when I'll have some results.

Thanks you all!

My PI (not Pi2) is overclocked to 1GHz and it's temperature is 46 Celsius degrees. I can't say that the device is overheated.

From the other thread, and credit to Raspberry Pi Brian for the code, my temp is non-overclocked:

pi@raspberrypi:~ $ #!/bin/bash
pi@raspberrypi:~ $ vcgencmd measure_clock arm && vcgencmd measure_temp
frequency(45)=900094000
temp=71.3'C

Have you got really good cooling or is your temperature not under load?

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pi@raspberrypi ~ $ vcgencmd measure_clock arm && vcgencmd measure_temp
frequency(45)=1000106000
temp=45.5'C

My device is placed on the table under the conditioner and has no case. Of course this temperature is under load.