Re: [alsa-devel] memory leak in mmap ops

At Sat, 30 Jul 2011 11:15:41 +0800, Scott Jiang wrote:

Hi all,

I found there is a memory leak about 128K every time in linux-2.6.34, but it doesn't exist in linux-3.0.

What does "every time" mean, and how did you detect it?

If I use mmap ops in driver the bug will come out, while use copy ops no memory leak. This driver is based on asoc. I tested with aplay to play a wav file. Because there is a lot of changes in ALSA between 2.6.34 and 3.0, so can anyone who familiar with the change history tell me which patch has solved this bug?

I don't remember such a bug fix, so wonder whether it's the ALSA core part or a driver-specific issue. You can try other driver (e.g. snd-dummy) to see whether the problem happens.

Takashi