DragonFlyBSD

The panel hid and would not come out. I started another panel so that I could continue working. While the browser was loading a webpage, it froze. I switched to my Linux box, which was shelled into my DFly box, with the KVM switch, and found an Xorg.core file, which I copied to /var/crash and tarred. I killed kdm, then logged in. As the session was restoring, the whole machine crashed, but did not dump a kernel core. I uploaded the Xorg core to leaf.

Core was generated by `Xorg'.
Program terminated with signal 6, Aborted.
#0 0x2853ba4f in kill () from /usr/lib/libc.so.7
(gdb) where
#0 0x2853ba4f in kill () from /usr/lib/libc.so.7
#1 0x285b7aae in raise () from /usr/lib/libc.so.7
#2 0x285b731e in abort () from /usr/lib/libc.so.7
#3 0x285a8e57 in __assert () from /usr/lib/libc.so.7
#4 0x2894725a in I830EmitFlush () from /usr/pkg/lib/xorg/modules/drivers//intel_drv.so
#5 0x28947509 in I830Sync () from /usr/pkg/lib/xorg/modules/drivers//intel_drv.so
#6 0x289556c6 in I830LeaveVT () from /usr/pkg/lib/xorg/modules/drivers//intel_drv.so
#7 0x080ab5ed in ?? ()
#8 0x0809cba2 in AbortDDX ()
#9 0x0811a84c in AbortServer ()
#10 0x0811ad7b in FatalError ()
#11 0x28947474 in I830WaitLpRing () from /usr/pkg/lib/xorg/modules/drivers//intel_drv.so
#12 0x28947fe1 in intel_nondrm_wait ()
from /usr/pkg/lib/xorg/modules/drivers//intel_drv.so
#13 0x289c23af in _fence_wait_internal () from /usr/pkg/lib/libdrm_intel.so.1
#14 0x289c337d in drm_intel_fake_reloc_and_validate_buffer ()
from /usr/pkg/lib/libdrm_intel.so.1
#15 0x289c3674 in drm_intel_fake_bo_exec () from /usr/pkg/lib/libdrm_intel.so.1
#16 0x289c14f0 in drm_intel_bo_exec () from /usr/pkg/lib/libdrm_intel.so.1
#17 0x28947da0 in intel_batch_flush ()
from /usr/pkg/lib/xorg/modules/drivers//intel_drv.so
#18 0x28947519 in I830Sync () from /usr/pkg/lib/xorg/modules/drivers//intel_drv.so
#19 0x2897a61a in I830EXASync () from /usr/pkg/lib/xorg/modules/drivers//intel_drv.so
#20 0x28a93006 in exaWaitSync () from /usr/pkg/lib/xorg/modules//libexa.so
#21 0x28a940ce in ExaDoPrepareAccess () from /usr/pkg/lib/xorg/modules//libexa.so
#22 0x28a9840a in exaCopyDirty () from /usr/pkg/lib/xorg/modules//libexa.so
#23 0x28a9857e in exaDoMoveOutPixmap () from /usr/pkg/lib/xorg/modules//libexa.so