>Number: 155319
>Category: kern
>Synopsis: Immediate kernel crash when starting X on 9.0-CURRENT with
>r400/r500 GPU
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Mar 06 19:20:09 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator: Adam Kirchhoff
>Release: 9.0-CURRENT
>Organization:
None
>Environment:
FreeBSD sorrow.ashke.com 9.0-CURRENT FreeBSD 9.0-CURRENT #3: Tue Feb 22
04:53:58 EST 2011 root@:/usr/obj/usr/src/sys/SORROW amd64
>Description:
As soon as I start X with either an X850 or X1900 in this particular machine
running 9.0-CURRENT, I get a kernel crash. There is no kernel debug prompt,
and no dump created. The only output on the serial port is below. A radeon
HD4850 works fine, leading me to believe that this is specific to the r300-r500
DRM code. If I configure Xorg to disable glx and dri, X starts up.
Fatal trap 28: machine check trap while in kernel mode
Fatal trap 28: machine check trap while in kernel mode
cpuid = 3; cpuid = 2; apic id = 03
apic id = 02
instruction pointer = 0x20:0xffffffff809e6346
instruction pointer = 0x20:0xffffffff809e6346
stack pointer = 0x28:0xffffff8000033ad0
stack pointer = 0x28:0xffffff8000038ad0
frame pointer = 0x28:0xffffff8000033ae0
frame pointer = 0x28:0xffffff8000038ae0
code segment = base 0x0, limit 0xfffff, type 0x1b
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = processor eflags = interrupt enabled, interrupt
enabled, IOPL = 0
IOPL = 0
current process = current process = 11 (idle: cpu3)
1
Fatal trap 28: machine check trap while in kernel mode
cpuid = 2; apic id = 02
instruction pointer = 0x20:0xffffffff809f5aa2
stack pointer = 0x28:0xffffff800001bdf0
frame pointer = 0x28:0xffffff800001be20
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = IOPL = 0
current process = 11 (idle: cpu2)
>How-To-Repeat:
Install 9.0-CURRENT on a machine with a radeon r4xx/r5xx GPU. Start X.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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