Comment 11 for bug 1409393

That last comment was from last week - I still had it in my firefox "Restore Session" and had not pressed "Post Comment" yet.

But it just happened again today - it looks like the frequency of this bug is increasing with newer kernel, xorg-server, and
xorg-drivers-radeon releases .

Here is the info from today's lockup :

(gdb) where
#0 0x00007f8c7e248337 in ioctl () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007f8c7f52f3a4 in drmIoctl () from /usr/lib/x86_64-linux-gnu/libdrm.so.2
#2 0x00007f8c7f5316bf in drmCommandWriteRead () from /usr/lib/x86_64-linux-gnu/libdrm.so.2
#3 0x00007f8c7a093c83 in ?? () from /usr/lib/x86_64-linux-gnu/libdrm_radeon.so.1
#4 0x00007f8c7a2d52d9 in ?? () from /usr/lib/xorg/modules/drivers/radeon_drv.so
#5 0x00007f8c79c46856 in ?? () from /usr/lib/xorg/modules/libexa.so
#6 0x00007f8c79c46c9b in ?? () from /usr/lib/xorg/modules/libexa.so
#7 0x00007f8c807c4c2d in miCopyRegion ()
#8 0x00007f8c807c51b6 in miDoCopy ()
#9 0x00007f8c79c45326 in ?? () from /usr/lib/xorg/modules/libexa.so
#10 0x00007f8c80771b38 in ?? ()
#11 0x00007f8c8068d3d1 in ?? ()
#12 0x00007f8c80690f0e in ?? ()
#13 0x00007f8c80694d9a in ?? ()
#14 0x00007f8c7e178ec5 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#15 0x00007f8c806801ee in _start ()
(gdb) info regs
Undefined info command: "regs". Try "help info".
(gdb) info reg
rax 0xfffffffffffffe00 -512
rbx 0xffffffff 4294967295
rcx 0xffffffffffffffff -1
rdx 0x7fffa4188270 140735946457712
rsi 0xc020645d 3223348317
rdi 0xc 12
rbp 0x7fffa4188270 0x7fffa4188270
rsp 0x7fffa4188218 0x7fffa4188218
r8 0x7f8c85add9c0 140241514912192
r9 0x0 0
r10 0x7fffa4188330 140735946457904
r11 0x246 582
r12 0xc020645d 3223348317
r13 0xc 12
r14 0x753000 7680000
r15 0x4 4
rip 0x7f8c7e248337 0x7f8c7e248337 <ioctl+7>
eflags 0x246 [ PF ZF IF ]
cs 0x33 51
ss 0x2b 43
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0

This time I did not see the 'GPU lockup CP stall' messages in the dmesg output -
it looks like the newer Xorg server & radeon_drv are capable of locking up
all on their own without a GPU lockup .