Bug 1086823

Summary:	qemu sometimes crashes in spice-server with "rate_control->num_recent_enc_frames" assertion
Product:	Red Hat Enterprise Linux 7	Reporter:	David Jaša <djasa>
Component:	spice	Assignee:	Default Assignee for SPICE Bugs <rh-spice-bugs>
Status:	CLOSED ERRATA	QA Contact:	Desktop QE <desktop-qa-list>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	7.0	CC:	cfergeau, dblechte, marcandre.lureau, mkenneth, mkrcmari, rbalakri
Target Milestone:	beta
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	spice-0.12.4-7.el7	Doc Type:	Bug Fix
Doc Text:	Under certain conditions, when SPICE streaming code triggers, a "mjpeg_encoder.c:627:mjpeg_encoder_adjust_params_to_bit_rate: assertion `rate_control->num_recent_enc_frames' failed" assertion would be raised. This issue is fixed by properly handling this case in the streaming code.	Story Points:	---
Clone Of:	1086820	Environment:
Last Closed:	2015-03-05 07:56:23 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1086820
Bug Blocks:

Description David Jaša 2014-04-11 15:13:19 UTC

This bug is likely to be in .el7 spice-server as well so let's track it with a separate bz. Technical discussion should be in parent bug.

+++ This bug was initially created as a clone of Bug #1086820 +++

Description of problem:
Sometimes, qemu process crashes with failed assertion: "rate_control->num_recent_enc_frames". The issue was also reported upstream in this ML thread:
http://lists.freedesktop.org/archives/spice-devel/2014-February/thread.html#16030

Version-Release number of selected component (if applicable):
spice-server-0.12.4-6.el6_5.1.x86_64
guest:
  * in my case: RHEL 6.5
  * upstream report: Windows 7 when working in Outlook

How reproducible:
random

Steps to Reproduce:
1. use of guest over wan could make bug more likely to occur
2.
3.

Actual results:
qemu crashes

Expected results:
no crash occurs

Additional info:

Comment 1 Marc-Andre Lureau 2014-07-01 22:03:29 UTC

original bug has solution, moving to POST

Comment 6 errata-xmlrpc 2015-03-05 07:56:23 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-0335.html