Re: amd64 system crash with radeondrm enabled after update

[Sverre Froyen <sverre%viewmark.com@localhost>]

On Thu May 13 2010 12:07:01 Iain Hibbert wrote:
> On Thu, 13 May 2010, Brian Buhrow wrote:
> >     Hello.  Isn't there a way to have ddb execute a series of commands
> > 
> > when it fires?  I think the output of ddb commands show up in the dmesg
> > buffer.  So, you could have  it execute a back trace, then reboot after
> > writing a core image, which will capture all the relevant output.  I
> > think it's a sysctl to tell ddb what to do.
> 
> AFAIK it needs to be built in, see ddb(4)

Using these suggestions I get the following output:

info: [drm] Setting GART location based on new memory map
info: [drm] Loading RV635 Microcode
uvm_fault(0xffff80004ee23010, 0x0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff801f7823 cs 8 rflags 13246 cr2  0 cpl 0 rsp ffff8
0004f4cb888
kernel: page fault trap, code=0
Stopped in pid 1055.1 (Xorg) at netbsd:bus_space_write_4+0x3:   cmpl    
$0,0(%rd
i)
db{0}> bt
bus_space_write_4() at netbsd:bus_space_write_4+0x3
r600_do_init_cp() at netbsd:r600_do_init_cp+0x5ee
drm_ioctl() at netbsd:drm_ioctl+0x36f
cdev_ioctl() at netbsd:cdev_ioctl+0x51
VOP_IOCTL() at netbsd:VOP_IOCTL+0x6a
vn_ioctl() at netbsd:vn_ioctl+0x62
sys_ioctl() at netbsd:sys_ioctl+0xe9
syscall() at netbsd:syscall+0xaa

The crash dump provides:

(gdb) bt
#0  0xffffffff804bfd9d in cpu_reboot (howto=260, bootstr=<value optimized out>)
    at /usr/src/sys/arch/amd64/amd64/machdep.c:675
#1  0xffffffff8023e38c in db_reboot_cmd (addr=<value optimized out>, 
    have_addr=<value optimized out>, count=<value optimized out>, 
    modif=<value optimized out>) at /usr/src/sys/ddb/db_command.c:1308
#2  0xffffffff8023ead5 in db_command (last_cmdp=0xffffffff80c421c0)
    at /usr/src/sys/ddb/db_command.c:909
#3  0xffffffff8023ed34 in db_command_loop ()
    at /usr/src/sys/ddb/db_command.c:567
#4  0xffffffff80244044 in db_trap (type=<value optimized out>, 
    code=<value optimized out>) at /usr/src/sys/ddb/db_trap.c:101
#5  0xffffffff80241763 in kdb_trap (type=6, code=0, regs=0xffff80004f47b790)
    at /usr/src/sys/arch/amd64/amd64/db_interface.c:214
#6  0xffffffff8069c280 in trap (frame=0xffff80004f47b790)
    at /usr/src/sys/arch/amd64/amd64/trap.c:284
#7  0xffffffff80100ed9 in calltrap ()
#8  0xffffffff801f7823 in bus_space_write_stream_4 ()
(gdb) frame 8
#8  0xffffffff801f7823 in bus_space_write_stream_4 ()
(gdb) info registers
rax            0xffff80000881de80       -140737345626496
rbx            0xffff800007cbf3a8       -140737357548632
rcx            0x0      0
rdx            0x0      0
rsi            0x0      0
rdi            0x0      0
rbp            0xffff80004f47b8e0       0xffff80004f47b8e0
rsp            0xffff80004f47b888       0xffff80004f47b888
r8             0x0      0
r9             0x1      1
r10            0x2      2
r11            0x1      1
r12            0xffff800007cbf000       -140737357549568
r13            0xffff80004c3e4850       -140736209205168
r14            0xffff800007cbf000       -140737357549568
r15            0xffff80004c3e4800       -140736209205248
rip            0xffffffff801f7823       0xffffffff801f7823 
<bus_space_write_stream_4+3>
eflags         0x13246  [ PF ZF IF #12 #13 RF ]
cs             0x8      8
ss             0x10     16
ds             0x8      8
es             0x804828d7       -2142754601
fs             0x0      0
gs             0x3      3
(gdb) 

Further pointers appreciated.

Thanks!
Sverre