kern/121337: Kernel panic on 7.0-RELEASE using ati/radeon drivers (might apply to other drivers)

[Johan Granath]

>Number:         121337
>Category:       kern
>Synopsis:       Kernel panic on 7.0-RELEASE using ati/radeon drivers (might apply to other drivers)
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Mar 03 23:30:05 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Johan Granath
>Release:        FreeBSD 7.0-RELEASE
>Organization:
-
>Environment:
frodo# uname -a
FreeBSD frodo.dontexist.com 7.0-RELEASE FreeBSD 7.0-RELEASE #1: Mon Mar  3 07:17:28 CET 2008     root at frodo.dontexist.com:/usr/obj/usr/src/sys/GENERIC  i386

>Description:
I've been using ati/radeon drivers for my ATI Radeon 9200SE on 6.2-RELEASE without issues. 

I did an upgrade (according to the 'canonical way' as usual) to 7.0-RELEASE and discovered this issue.

I've run Xorg with 'vesa'-driver and this issue won't happen.

I've tried to disable 'dri' and 'glx' in xorg.conf - nothing to the better.

I suspect (from kgdb) it has something to do with kernel drm-support. However I am not used to dig into kernel code so I share this to more experienced people.

I have also tested this on 6.3-RELEASE with same fatal results - the dump is from 7.0-RELEASE thou.

------ kgdm dump -----------

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Unread portion of the kernel message buffer:
panic: vm_fault: fault on nofault entry, addr: dcf27000 <-- always same address
cpuid = 0
Uptime: 28s
Physical memory: 499 MB
Dumping 94 MB: 79 63 47 31 15

#0  doadump () at pcpu.h:195
195		__asm __volatile("movl %%fs:0,%0" : "=r" (td));
(kgdb) bt
#0  doadump () at pcpu.h:195
#1  0xc0754457 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409
#2  0xc0754719 in panic (fmt=) at /usr/src/sys/kern/kern_shutdown.c:563
#3  0xc096c258 in vm_fault (map=0xc1471000, vaddr=3706875904, fault_type=1 '\001', fault_flags=0)
    at /usr/src/sys/vm/vm_fault.c:275
#4  0xc0a4927e in trap_pfault (frame=0xd60e7a64, usermode=0, eva=3706875904) at /usr/src/sys/i386/i386/trap.c:801
#5  0xc0a49c8c in trap (frame=0xd60e7a64) at /usr/src/sys/i386/i386/trap.c:490
#6  0xc0a2fc0b in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#7  0xc0a5acb7 in agp_nvidia_flush_tlb (dev=0xc2ed7080, offset=-1025201880) at /usr/src/sys/pci/agp_nvidia.c:377
#8  0xc08fd8a0 in agp_generic_bind_memory (dev=0xc2ed7080, mem=0xc3519c00, offset=0) at agp_if.h:76
#9  0xc08fccf1 in agp_bind_memory (dev=0xc2ed7080, handle=0xc3519c00, offset=0) at agp_if.h:128
#10 0xc35b8b6f in ?? ()
#11 0xc2ed7080 in ?? ()
#12 0xc3519c00 in ?? ()
#13 0x00000000 in ?? ()
#14 0x0000014a in ?? ()
#15 0xc301b0d8 in ?? ()
#16 0xc301b000 in ?? ()
#17 0xc301b0d8 in ?? ()
#18 0x00000000 in ?? ()
#19 0xd60e7b6c in ?? ()
#20 0xc35b8c41 in ?? ()
#21 0xc301b000 in ?? ()
#22 0xd60e7b5c in ?? ()
#23 0xc35c195d in ?? ()
#24 0x0000015b in ?? ()
#25 0xc3519c00 in ?? ()
#26 0x00000000 in ?? ()
#27 0xc35c31b0 in ?? ()
#28 0xc35b8bf0 in ?? ()
#29 0xd60e7bc4 in ?? ()
#30 0xc35bdafd in ?? ()
#31 0xc31a0c00 in ?? ()
#32 0x80086436 in ?? ()
#33 0xc2ed5400 in ?? ()
#34 0x00000043 in ?? ()
#35 0xc3513840 in ?? ()
#36 0x000003e2 in ?? ()
#37 0xd60e7bc4 in ?? ()
#38 0x00000000 in ?? ()
#39 0xc301b0d8 in ?? ()
#40 0xc3513840 in ?? ()
#41 0x00000043 in ?? ()
#42 0xc2ed5400 in ?? ()
#43 0x80086436 in ?? ()
#44 0xc31a0c00 in ?? ()
#45 0x000003e2 in ?? ()
#46 0x00000036 in ?? ()
#47 0x00000000 in ?? ()
#48 0xc31a0c00 in ?? ()
#49 0x80086436 in ?? ()
#50 0xc3175318 in ?? ()
#51 0xd60e7be4 in ?? ()
#52 0xc0720d1a in giant_ioctl (dev=0x0, cmd=3591273308, 
    data=0xc35c195d "/usr/src/sys/modules/drm/drm/../../../dev/drm/drm_agpsupport.c", fflag=347, td=0xc3519c00)
    at /usr/src/sys/kern/kern_conf.c:349
(kgdb) q
>How-To-Repeat:
To make this apply you must use (to my knowledge) a ATI Radeon 9200SE

Add in xorg.conf:

 Driver "ati"

Start Xorg:
startx

Failure happens as soon as video tries to initialize. Reboots.
>Fix:
None at the moment

>Release-Note:
>Audit-Trail:
>Unformatted: