[mythtv-users] Mythfrontend memory leak on master

[Timothy Krantz]

> Tim,
> 
> I did a few more valgrind runs and tried to pastebin the output, but it's
29MB.
> So, here's what I believe to be the last failure and the
> summary:
> 
>      http://pastebin.com/raw.php?i=rjVVXA6r
> 
> When I run the command in the above paste and try to watch a recording,
> the Please Wait... screen shows up and 59 seconds later the FE crashes.
> A vg.out.core.27055 ends up in /tmp where I put a vg.out file.
> 
> In other words, I don't know that I'm capturing the leak that occurs
during
> playback.

Bill,
I was able to run a valgrind session that was able to play several minutes
of a known "leaky" recording.  It was 13MB in length but if I am
interpreting things correctly this is the majority of the leakage:

==32023== 31,071,048 (193,416 direct, 30,877,632 indirect) bytes in 8,059
blocks
 are definitely lost in loss record 11,456 of 11,456
==32023==    at 0x4A0858C: memalign (in
/usr/lib64/valgrind/vgpreload_memcheck-a
md64-linux.so)
==32023==    by 0x4A08651: posix_memalign (in
/usr/lib64/valgrind/vgpreload_memc
heck-amd64-linux.so)
==32023==    by 0x6313B9C: av_malloc (mem.c:94)
==32023==    by 0x6313D5D: av_mallocz (mem.c:244)
==32023==    by 0x63077DD: av_buffer_ref (buffer.c:93)
==32023==    by 0x630EF48: av_frame_copy_props (frame.c:500)
==32023==    by 0x56D6CD9: unrefcount_frame.isra.3 (utils.c:2082)
==32023==    by 0x56D9BB3: avcodec_decode_video2 (utils.c:2183)
==32023==    by 0x6D24DA1: AvFormatDecoder::ProcessVideoPacket(AVStream*,
AVPacket*) (avformatdecoder.cpp:3497)
==32023==    by 0x6D2D7AF: AvFormatDecoder::GetFrame(DecodeTypes)
(avformatdecoder.cpp:4969)
==32023==    by 0x6C9F433: MythPlayer::DecoderGetFrame(DecodeTypes, bool)
(mythplayer.cpp:3395)
==32023==    by 0x6C9EDAF: MythPlayer::DecoderLoop(bool)
(mythplayer.cpp:3314)

I am still trying to get my head around what this is telling me, but it
looks like it might be related to the recent FFmpeg code updates.

Tim