RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

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:

Created attachment 896501 [details]
partial log with increased debugging output

I captured this log from a run where I reproduced this assert. I ran qemu by hand, and the assert happened soon after logging into the desktop (rhel6 host / rhel6 guest)

commandline:

QEMU_AUDIO_DRV=spice SPICE_DEBUG_LEVEL=5 qemu-kvm -spice port=5990,disable-ticketing -drive file=/var/lib/libvirt/images/Ambystoma.img,format=raw -m 1024 -vga qxl -device virtio-serial -chardev spicevmc,id=vdagent,debug=0,name=vdagent -device virtserialport,chardev=vdagent,name=com.redhat.spice.0 -device intel-hda,id=sound0


This line looks slightly suspicious:
(/usr/bin/qemu-kvm:3165): Spice-Debug **: mjpeg_encoder.c:937:mjpeg_encoder_decrease_bit_rate: during warmup. ignoring

Created attachment 896516 [details]
backtrace

For the record, this is being discussed at http://lists.freedesktop.org/archives/spice-devel/2014-May/016889.html with patches

committed fix upstream.

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.

http://rhn.redhat.com/errata/RHBA-2014-1435.html