Hi,

Lately, very occasionally though, I see this Call Trace with code (image of this is attached) from my Ubuntu Server 12.04 LTS. It freaked me out at first but the strange thing is it did not freeze or anything - I could still log in and do my other normal tasks on the server as if nothing was wrong with it. I don't know if I need to worry about it or this is something critical error.

I also noticed that this thing pops up when I am logged out completely.

Please see the picture with more info of what I'm talking about here.

Any help would be greatly appreciated.

Thank you

Attached Thumbnails

 

Just guessing, do you have an external hard disk attached to the machine via usb?

Thank you for your reply.

Yes, I do have an external portable Hard Drive attached via USB.

Thank you

and are you trying to use bzip2 to unzip a *.bz2 archive that is on this usb drive ?

is some process archiving a file in the background on this drive ?

without context this could be anything

Thanks for your reply.

I'm actually running automysqlbackup to back up all my databases and then zip them all with .bz2. This problem has gone away after changing the multicore in automysqlbackup config file from yes to no.

Thank you very much for your support