Maarten: Filled in test case stuff (what did you mean about eth2?)
I wonder if this should be marked security; we know it's
scribbling over bits of the X server, that's running as root,
although I don't know how to control what is scribbled where
(I'll get precise tested soon; just as soon as I convince LVM to
allocate the disk space...)
** Description changed:
- [Impact]
- * Fixes a null pointer dereference when shadowfb is out of bounds, in a
similar way to other ddx drivers.
+ [Impact]
+ * Fixes a null pointer dereference when shadowfb is out of bounds, in a
similar way to other ddx drivers.
[Test Case]
- * Start virt-manager, create quantal-amd64 vm, make sure cirrus is used as
video driver
- * XXX? What to do here? I don't have a eth2
+ * Start virt-manager, create quantal-amd64 vm, make sure cirrus is used as
video driver
+ * Perform a fresh install of Quantal 64bit (I used an iso image)
+ - I used default options within the install
+ * log in
+ * start a terminal via unity (I did that by searching for terminal in unity)
+ * ctrl-alt-down (to switch virtual desktop in the VM)
+ <X crashes and returns you to lightdm login>
- [Regression Potential]
- * Low, changes are limited to the shadowfb code paths. Since it limits the
width/height of the memcpy's performed and nothing else I either expect the bug
not to be fixed, or not make it worse at least. Still I'll keep watching cirrus
bug reports to see if any new ones have been introduced by the fix.
+
+ [Regression Potential]
+ * Low, changes are limited to the shadowfb code paths. Since it limits the
width/height of the memcpy's performed and nothing else I either expect the bug
not to be fixed, or not make it worse at least. Still I'll keep watching cirrus
bug reports to see if any new ones have been introduced by the fix.
[Other Info]
- * I upstreamed the bug fix and did a new release for cirrus. Raring already
has the bug fixed, no new bug reports have popped up yet about it.
+ * I upstreamed the bug fix and did a new release for cirrus. Raring already
has the bug fixed, no new bug reports have popped up yet about it.
[Original bug report]
No login possible on KVM-based virtual machine (with virt-manager) and
network settings
Source device: Host device eth2 : macvtap
Device model: virtio
Source mode: VEPA
With source mode set to "Default" it works.
ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: xserver-xorg-core 2:1.12.99.905-0ubuntu3
ProcVersionSignature: Ubuntu 3.5.0-13.13-generic 3.5.3
Uname: Linux 3.5.0-13-generic x86_64
ApportVersion: 2.5.1-0ubuntu3
Architecture: amd64
CrashCounter: 1
CurrentDmesg:
[ 3.809292] init: plymouth-stop pre-start process (1197) terminated with
status 1
[ 5.314446] hda-intel: Invalid position buffer, using LPIB read method
instead.
[ 9.269441] hda-intel: IRQ timing workaround is activated for card #0.
Suggest a bigger bdl_pos_adj.
Date: Wed Aug 29 22:04:57 2012
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xorg
GraphicsCard:
Cirrus Logic GD 5446 [1013:00b8] (prog-if 00 [VGA controller])
Subsystem: Red Hat, Inc Device [1af4:1100]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Bochs Bochs
ProcCmdline: /usr/bin/X :0 -core -auth /var/run/lightdm/root/:0 -nolisten tcp
vt7 -novtswitch
ProcEnviron:
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-13-generic
root=UUID=2258d315-c1f3-4f2c-b925-01ab5cdf448d ro quiet splash vt.handoff=7
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
?? () from /lib/x86_64-linux-gnu/libc.so.6
cirRefreshArea () from /usr/lib/xorg/modules/drivers/cirrus_drv.so
?? () from /usr/lib/xorg/modules/libshadowfb.so
?? ()
?? ()
Title: Xorg crashed with SIGABRT in cirRefreshArea()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
dmi.bios.date: 01/01/2007
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias:
dmi:bvnBochs:bvrBochs:bd01/01/2007:svnBochs:pnBochs:pvr:cvnBochs:ct1:cvr:
dmi.product.name: Bochs
dmi.sys.vendor: Bochs
version.compiz: compiz 1:0.9.8+bzr3319-0ubuntu3
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.38-0ubuntu2
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0~git20120821.c1114c61-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0~git20120821.c1114c61-0ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.12.99.905-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati
1:6.99.99~git20120713.6ef1ad6a-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.3-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:1.0.1-4~ubuntu1
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https://bugs.launchpad.net/bugs/1043513
Title:
Xorg crashed with SIGABRT in memcpy() via cirRefreshArea() under KVM
virtual machine
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