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Bug#894030: Acknowledgement (linux-image-4.15.0-2-amd64: kernel memory leak while recording with audacity)

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On Sun, 2018-03-25 at 17:10 +0200, Dominique Dumont wrote:
> On the other hand, once I closed the audacity windows, the kernel
> released about 3BG of memory:
> 
> $ smem -tw
> Area                           Used      Cache   Noncache 
> firmware/hardware                 0          0          0 
> kernel image                      0          0          0 
> kernel dynamic memory      12031840    8955868    3075972 
> userspace memory            2902768     546996    2355772 
> free memory                 1504308    1504308          0 
> ----------------------------------------------------------
>                            16438916   11007172    5431744 
> 
> Feel free to close this bug if you think it's invalid..
[...]

Well it doesn't seem likely to be a kernel leak if the memory is freed
by ending the process.

It looks like audacity stores working data in /tmp/audacity-<username>. 
If you have a tmpfs mounted on /tmp then this probably explains the
growth in "noncache" kernel memory usage.

Ben.

-- 
Ben Hutchings
When in doubt, use brute force. - Ken Thompson

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Bug#894030: Acknowledgement (linux-image-4.15.0-2-amd64: kernel memory leak while recording with audacity) Dominique Dumont <dod@debian.org> - 2018-03-25 17:20 +0200
  Bug#894030: Acknowledgement (linux-image-4.15.0-2-amd64: kernel memory leak while recording with audacity) Ben Hutchings <ben@decadent.org.uk> - 2018-03-26 18:40 +0200

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