[Bug 91154] New: guest X crashes periodically

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91154

            Bug ID: 91154
           Summary: guest X crashes periodically
           Product: Spice
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: xorg qxl
          Assignee: spice-bugs at lists.freedesktop.org
          Reporter: Tanktalus at gmail.com

Scenario: RHEL 6 64-bit guest, Gentoo 64-bit host.  Using KVM on Intel i7. 
Using remote-viewer to connect via spice protocol.

After having the RHEL guest running for days (usually), the X server in the
guest will suddenly exit and restart.  I'm not sure if this is due to the
number of cut&pastes between guest and host or anything like that, it can
sometimes take a couple days, or sometimes a week, but this occurs regularly,
and I need to eventually log back in, and, because of the crash, it never
remembers my screen size, etc.

The guest VM does not reboot in its entirety, it just seems the X server
restarts.  At the bottom of /var/log/Xorg.0.log.old is:

[1479356.477] Out of memory allocating 262100 bytes
[1479356.477] Out of mem - stats

[1479356.480] max system bytes =   50319360
[1479356.480] system bytes     =   50319360
[1479356.480] in use bytes     =   22097912

so this may be a form of memory leak, and my guess would be the qxl driver?

# rpm -qf /usr/lib64/xorg/modules/drivers/qxl_drv.so
xorg-x11-drv-qxl-0.1.1-15.el6.x86_64

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