April update causes System freezes

I realise my post Music playback crash in May update - #3 by amos

is likely the same as this one, consisting of the same COMX errors. Logs in that post.

It seems this is largely reproducible on my Pi3 on May update, I tested it in the context of music playing and video. The crash happens in two stages. First the music hangs, but the UI is still traversable. Then I attempt to interact with the player in any way, the whole system hangs, requiring a kodi reboot.

The following produces it: Set music playing. Then hit down to cycle quickly through all the artist thumbnails. However even slow traversal can create the problem, and indeed a music playing hang has occurred while not interacting with the system, but that is harder to reproduce. It is always associated with errors of the form

ERROR: COMXCoreComponent::WaitForOutputDone OMX.broadcom.egl_render wait event timeout
18:11:39 101183.656250 T:1498276848
ERROR: COMXTexture::Decode m_omx_egl_render.WaitForOutputDone result(0x80001011)

sometime after something like

DEBUG: COMXCoreComponent::Initialize OMX.b
roadcom.egl_render input port 220 output port 221 m_handle 0x5193dbe8
18:11:37 101181.656250 T:1294455792 DEBUG: COMXCoreComponent::Deinitialize : O
MX.broadcom.egl_render handle 0x50ef4c30
18:11:37 101181.656250 T:1294455792 DEBUG: DecodeJpegToTexture: decoded specia
l://masterprofile/Thumbnails/e/ebbea169.jpg 200x197
18:11:37 101181.656250 T:1498276848 DEBUG: COMXCoreComponent::UseEGLImage comp
onent(OMX.broadcom.egl_render) - port(221), nBufferCountMin(1), nBufferCountActu
al(1), nBufferSize(15360) nBufferAlignmen(16)

AFAICS there is no consistency in the particular thumbnail being
rendered across different crashes unless I am misreading the log. Certainly there is no consistency in the thumbnail being displayed at the time of the music player hang.

This will eventually hang kodi entirely if any attempted play is made or further fast cycling is done.

This was not present in the March build, and is in May. The April I am less sure about simply because I was away/busy much of the month and didn’t use it much. All my music etc is on a NAS accessed via NFS. The thumbnails are local. Problem occurs on both Pi2 and Pi3. I have been using this system for a long while without problems previously.