On Fri, Apr 15, 2016 at 09:25:37PM +0100, Alan Horstmann wrote:
On Thursday 14 April 2016 05:32, David Fries wrote:
If -d was given to arecord while commit 8aa13eec80eac312e4b99423909387660fb99b8f (now reverted) was in effect, the last read would be shorter than the chunk size, but pcm_read would read and return the chunk size, the samples were discarded, and capture() continued in a loop because count never reached 0. arecord opens a new file each loop iteration, if arecord is dynamically naming files, --use-strftime option or beyond the wave 2GB limit, this will generate a series of header only wave files.
<snip>
Debian has the effectively broken pcm_read,
It is fortunate for me that you mentioned those details as I have just been bitten by exactly that, using arecord whilst tracking down a Portaudio issue in Debian Jessie! I was gearing up to report the bug, assuming it was in the capture system.
It seems a pity that Debian Jessie stable doesn't have a backport of the fix/revert.
Glad to hear I helped.
I filed a Debian bug report with the two patches that would avoid it as Bug#821048, but it isn't going to be fixed. Denial of service is usually seen as a security issue, and this bug could run the system out of inodes, I guess it isn't seen as a high enough priority. I was able to download and compile 1.1.0-2 on Jessie which doesn't have this problem.
---------------- Please update to alsa-utils 1.1.0-2 first. In stable there will be only security patches accepted. Bug closed herewith. Backports are not maintained from us.
Elimar ----------------
Now back to tracing the original issue...
Regards
Alan _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel