Logs added here:
https://pantheon.corp.google.com/m/cloudstorage/b/chromiumos-test-logs/o/bugfiles/cr/597793/debug-logs_20160324-142034.tgz

avkodipelli@ Can you also check M51 (tot) and M49? Thanks.

Thanks for the report. Do we have any estimation of the regression range?

https://codereview.chromium.org/1643123003/ could be related.

This issue is reproduced on 8104.0.0/51.0.2688.0.

avkodipelli@ Let's also check 49 to see how long this failure has been around.

avkodipelli@ please share your results on 49.
mussa@/wuchengli@ can we confirm this is the CL that may have caused this regression?
https://codereview.chromium.org/1643123003/

posciak@ would you be the right owner for this issue? Please reassign as necessary. This is currently a stable blocker.

Unable to reproduce this issue on 49.0.2623.95/7834.60.0 on jerry device.

marcheu@ Who should own this bug? Can you please suggest a name so we can make progress on this stable blocker?

Yes Pawel is the right owner for video bugs.

Thanks marcheu@. posciak@ Can you please update this bug with your investigation?

After a number of seeks with reallocations we are failing to allocate the required number of pictures and AssignPictureBuffers() fails. Still investigating why exactly this could be happening.

After more investigation, I can confirm we are hitting a corner case in the resolution change sequence in V4L2SVDA. I am working on a fix.

Reverting https://codereview.chromium.org/1643123003/ from M50 would also fix this issue and we can do this safely as well. That could perhaps be the best solution for M50.

posciak@ can you please submit the revert as you suggest?

Revert is up at: https://codereview.chromium.org/1863523003/

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/bb7bf3fc301c41f06145551aed91cc344fb08d9e

commit bb7bf3fc301c41f06145551aed91cc344fb08d9e
Author: posciak <posciak@chromium.org>
Date: Fri Apr 08 03:11:28 2016

Revert "V4L2SVDA: Move allocation from GPU Child thread to decoder thread."

This reverts https://codereview.chromium.org/1643123003/. Please see
 crbug.com/597793  for details.

BUG= 597793 
TEST=vdatest,crosvideo.appspot

Review URL: https://codereview.chromium.org/1863523003

Cr-Commit-Position: refs/heads/master@{#385969}

[modify] https://crrev.com/bb7bf3fc301c41f06145551aed91cc344fb08d9e/content/common/gpu/media/v4l2_slice_video_decode_accelerator.cc
[modify] https://crrev.com/bb7bf3fc301c41f06145551aed91cc344fb08d9e/content/common/gpu/media/v4l2_slice_video_decode_accelerator.h

Approving merge to M50.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/20276b71163463a4337979fea163ab97e8f01611

commit 20276b71163463a4337979fea163ab97e8f01611
Author: Pawel Osciak <posciak@chromium.org>
Date: Mon Apr 11 07:54:07 2016

Revert "V4L2SVDA: Move allocation from GPU Child thread to decoder thread."

This reverts https://codereview.chromium.org/1643123003/. Please see
 crbug.com/597793  for details.

BUG= 597793 
TEST=vdatest,crosvideo.appspot

Review URL: https://codereview.chromium.org/1863523003

Cr-Commit-Position: refs/heads/master@{#385969}
(cherry picked from commit bb7bf3fc301c41f06145551aed91cc344fb08d9e)

Review URL: https://codereview.chromium.org/1875983002 .

Cr-Commit-Position: refs/branch-heads/2661@{#546}
Cr-Branched-From: ef6f6ae5e4c96622286b563658d5cd62a6cf1197-refs/heads/master@{#378081}

[modify] https://crrev.com/20276b71163463a4337979fea163ab97e8f01611/content/common/gpu/media/v4l2_slice_video_decode_accelerator.cc
[modify] https://crrev.com/20276b71163463a4337979fea163ab97e8f01611/content/common/gpu/media/v4l2_slice_video_decode_accelerator.h

Verified 7978.62.0 / 50.0.2661.87