# Command terminated by signal 11

**URL:** <https://www.ruby-forum.com/t/command-terminated-by-signal-11/240064>\
**Category:** GNU Radio\
**Created:** [March 26, 2014, 6:47am UTC](https://www.ruby-forum.com/t/command-terminated-by-signal-11/240064 "2014-03-26T06:47:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Detlef\_R](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/58f4c7/32.png) [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\
**Post date:** [March 26, 2014, 6:47am UTC](https://www.ruby-forum.com/t/command-terminated-by-signal-11/240064/1 "2014-03-26T06:47:55Z")

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Hello

I am running my code in Python using Gnuradio and USRPs. The program is  
supposed to work continuously till an interrupt is given. The code works  
well for 10-15 iterations and then terminates stating “command  
terminated  
by signal 11”. What could be the possible reason behind it. I tried to  
google this error but the explanation given there was difficult to  
understand.  
Also how can I get rid of this error?

Regards,  
Sumedha

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<div class="post-metadata">

**Author:** ![Sumedha\_G](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/b9bd4f/32.png) [@Sumedha\_G](https://www.ruby-forum.com/u/Sumedha_G)\
**Post date:** [March 26, 2014, 10:49am UTC](https://www.ruby-forum.com/t/command-terminated-by-signal-11/240064/2 "2014-03-26T10:49:29Z")

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On 03/26/2014 06:46 AM, Sumedha G. wrote:

> I am running my code in Python using Gnuradio and USRPs. The program is  
> supposed to work continuously till an interrupt is given. The code works  
> well for 10-15 iterations and then terminates stating “command  
> terminated by signal 11”. What could be the possible reason behind it. I  
> tried to google this error but the explanation given there was difficult  
> to understand.  
> Also how can I get rid of this error?

Which program? Can you please specify all details? I recommend having a  
look at  
[http://gnuradio.org/redmine/projects/gnuradio/wiki/ReportingErrors](http://gnuradio.org/redmine/projects/gnuradio/wiki/ReportingErrors).  
We can’t help you otherwise.

Signal 11 is a SIGSEGV (segfault), so probably memory access violation.  
If you run a backtrace, you might be quickly able to figure out where  
that’s happening.

Martin