Bug 746404

Another backtrace:

WARNING: at drivers/gpu/drm/radeon/radeon_fence.c:267 radeon_fence_wait+0x296/0x33d [radeon]()
Hardware name: System Product Name
GPU lockup (waiting for 0x0028F9B9 last fence id 0x0028F9B7)
Modules linked in: tcp_lp sctp libcrc32c ppdev parport_pc lp parport fuse ebtable_nat ebtables lockd ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle tun bridge stp llc ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack snd_hda_codec_hdmi snd_hda_codec_realtek joydev eeepc_wmi asus_wmi sparse_keymap rfkill microcode serio_raw i2c_i801 snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm e1000e iTCO_wdt iTCO_vendor_support snd_timer snd soundcore snd_page_alloc virtio_net kvm_intel kvm sunrpc uinput mxm_wmi firewire_ohci firewire_core crc_itu_t wmi radeon ttm drm_kms_helper drm i2c_algo_bit i2c_core [last unloaded: scsi_wait_scan]
Pid: 1165, comm: Xorg Not tainted 3.1.0-0.rc9.git0.0.fc16.x86_64 #1
Call Trace:
 [<ffffffff81057a56>] warn_slowpath_common+0x83/0x9b
 [<ffffffff81057b11>] warn_slowpath_fmt+0x46/0x48
 [<ffffffffa00d26d4>] ? evergreen_gpu_is_lockup+0xbb/0xc3 [radeon]
 [<ffffffffa0098e0d>] radeon_fence_wait+0x296/0x33d [radeon]
 [<ffffffff81073426>] ? remove_wait_queue+0x3a/0x3a
 [<ffffffffa0099401>] radeon_sync_obj_wait+0x11/0x13 [radeon]
 [<ffffffffa00605fe>] ttm_bo_wait+0xbf/0x17a [ttm]
 [<ffffffffa0061031>] ? ttm_bo_list_ref_sub+0x29/0x2b [ttm]
 [<ffffffffa00a9e7b>] radeon_bo_wait+0x7b/0x9f [radeon]
 [<ffffffffa00aa3dd>] radeon_gem_wait_idle_ioctl+0x3d/0x70 [radeon]
 [<ffffffffa0015784>] drm_ioctl+0x29e/0x37b [drm]
 [<ffffffffa00aa3a0>] ? radeon_gem_busy_ioctl+0x86/0x86 [radeon]
 [<ffffffff811de8d4>] ? inode_has_perm+0x32/0x34
 [<ffffffff811de97d>] ? file_has_perm+0xa7/0xc9
 [<ffffffff81136f33>] do_vfs_ioctl+0x452/0x493
 [<ffffffff810a3a61>] ? audit_syscall_exit+0x12e/0x14a
 [<ffffffff81136fca>] sys_ioctl+0x56/0x7c
 [<ffffffff814bc375>] ? int_check_syscall_exit_work+0x34/0x3d
 [<ffffffff814bc0c2>] system_call_fastpath+0x16/0x1b

Another backtrace:

WARNING: at drivers/gpu/drm/radeon/radeon_fence.c:267 radeon_fence_wait+0x296/0x33d [radeon]()
Hardware name: System Product Name
GPU lockup (waiting for 0x001E5FA1 last fence id 0x001E5F90)
Modules linked in: usblp sctp libcrc32c tcp_lp ppdev parport_pc lp parport fuse ebtable_nat ebtables lockd ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle tun bridge stp llc ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack snd_hda_codec_hdmi snd_hda_codec_realtek joydev snd_hda_intel virtio_net snd_hda_codec snd_hwdep kvm_intel snd_seq snd_seq_device kvm snd_pcm eeepc_wmi asus_wmi sparse_keymap rfkill uinput microcode i2c_i801 serio_raw iTCO_wdt iTCO_vendor_support e1000e snd_timer snd soundcore snd_page_alloc sunrpc mxm_wmi firewire_ohci firewire_core crc_itu_t wmi radeon ttm drm_kms_helper drm i2c_algo_bit i2c_core [last unloaded: scsi_wait_scan]
Pid: 1169, comm: Xorg Not tainted 3.1.0-0.rc9.git0.0.fc16.x86_64 #1
Call Trace:
 [<ffffffff81057a56>] warn_slowpath_common+0x83/0x9b
 [<ffffffff81057b11>] warn_slowpath_fmt+0x46/0x48
 [<ffffffffa00d26d4>] ? evergreen_gpu_is_lockup+0xbb/0xc3 [radeon]
 [<ffffffffa0098e0d>] radeon_fence_wait+0x296/0x33d [radeon]
 [<ffffffffa009868c>] ? atom_allocate_fb_scratch+0x91/0x91 [radeon]
 [<ffffffff81073426>] ? remove_wait_queue+0x3a/0x3a
 [<ffffffffa0099401>] radeon_sync_obj_wait+0x11/0x13 [radeon]
 [<ffffffffa00605fe>] ttm_bo_wait+0xbf/0x17a [ttm]
 [<ffffffffa00c00d6>] ? r600_cp_commit+0x2a/0x2d [radeon]
 [<ffffffffa0062ead>] ttm_bo_move_accel_cleanup+0x9f/0x26a [ttm]
 [<ffffffffa0099533>] radeon_move_blit+0x120/0x13e [radeon]
 [<ffffffffa009b34f>] ? radeon_gart_bind+0x161/0x172 [radeon]
 [<ffffffffa0099ab0>] radeon_bo_move+0x103/0x12a [radeon]
 [<ffffffffa0061836>] ttm_bo_handle_move_mem+0x1c0/0x2a1 [ttm]
 [<ffffffffa0061bb6>] ttm_bo_evict+0x29f/0x2e8 [ttm]
 [<ffffffffa0061d51>] ttm_mem_evict_first+0x152/0x180 [ttm]
 [<ffffffffa00623c6>] ttm_bo_mem_space+0x29b/0x2ea [ttm]
 [<ffffffffa00624cb>] ttm_bo_move_buffer+0xb6/0x10c [ttm]
 [<ffffffffa001ec90>] ? drm_mm_insert_helper+0xd3/0xec [drm]
 [<ffffffffa00625d7>] ttm_bo_validate+0xb6/0xf4 [ttm]
 [<ffffffffa0062915>] ttm_bo_init+0x300/0x339 [ttm]
 [<ffffffffa009a442>] radeon_bo_create+0x1bf/0x248 [radeon]
 [<ffffffffa009a194>] ? radeon_bo_clear_surface_reg+0x50/0x50 [radeon]
 [<ffffffffa00a9f7a>] radeon_gem_object_create+0x53/0xd8 [radeon]
 [<ffffffffa00aa232>] radeon_gem_create_ioctl+0x4b/0x81 [radeon]
 [<ffffffffa00aa394>] ? radeon_gem_busy_ioctl+0x7a/0x86 [radeon]
 [<ffffffff8104402b>] ? should_resched+0xe/0x2d
 [<ffffffffa0015784>] drm_ioctl+0x29e/0x37b [drm]
 [<ffffffffa00aa1e7>] ? radeon_gem_pwrite_ioctl+0x28/0x28 [radeon]
 [<ffffffff811de8d4>] ? inode_has_perm+0x32/0x34
 [<ffffffff811de97d>] ? file_has_perm+0xa7/0xc9
 [<ffffffff81136f33>] do_vfs_ioctl+0x452/0x493
 [<ffffffff81136fca>] sys_ioctl+0x56/0x7c
 [<ffffffff814bc0c2>] system_call_fastpath+0x16/0x1b

Created attachment 529319 [details]
radeon_rom.gz

Attaching the card rom for:

01:00.0 VGA compatible controller: ATI Technologies Inc Redwood [Radeon HD 5670]

Created attachment 529400 [details]
gnome-shell.stack

The bug is now 100% reproducible scrolling pdf inside evince.
As attachment the gnome-shell stack trace when it hangs on the radeon lockup.

Oct 21 00:50:05 nipah kernel: [  326.010211] radeon 0000:01:00.0: GPU lockup CP stall for more than 10021msec
Oct 21 00:50:05 nipah kernel: [  326.010213] ------------[ cut here ]------------
Oct 21 00:50:05 nipah kernel: [  326.010232] WARNING: at drivers/gpu/drm/radeon/radeon_fence.c:267 radeon_fence_wait+0x296/0x33d [radeon]()
Oct 21 00:50:05 nipah kernel: [  326.010234] Hardware name: System Product Name
Oct 21 00:50:05 nipah kernel: [  326.010235] GPU lockup (waiting for 0x0000BB1A last fence id 0x0000BB15)
Oct 21 00:50:05 nipah kernel: [  326.010236] Modules linked in: sctp libcrc32c ppdev parport_pc lp parport fuse ebtable_nat ebtables lockd ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle tun bridge stp llc ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack snd_hda_codec_hdmi snd_hda_codec_realtek joydev eeepc_wmi asus_wmi sparse_keymap rfkill microcode i2c_i801 serio_raw iTCO_wdt iTCO_vendor_support snd_hda_intel snd_hda_codec snd_hwdep snd_seq virtio_net snd_seq_device kvm_intel snd_pcm kvm snd_timer e1000e snd soundcore snd_page_alloc uinput sunrpc mxm_wmi firewire_ohci firewire_core crc_itu_t wmi radeon ttm drm_kms_helper drm i2c_algo_bit i2c_core [last unloaded: scsi_wait_scan]
Oct 21 00:50:05 nipah kernel: [  326.010262] Pid: 1120, comm: Xorg Not tainted 3.1.0-0.rc9.git0.0.fc16.x86_64 #1
Oct 21 00:50:05 nipah kernel: [  326.010263] Call Trace:
Oct 21 00:50:05 nipah kernel: [  326.010268]  [<ffffffff81057a56>] warn_slowpath_common+0x83/0x9b
Oct 21 00:50:05 nipah kernel: [  326.010270]  [<ffffffff81057b11>] warn_slowpath_fmt+0x46/0x48
Oct 21 00:50:05 nipah kernel: [  326.010284]  [<ffffffffa00d26d4>] ? evergreen_gpu_is_lockup+0xbb/0xc3 [radeon]
Oct 21 00:50:05 nipah kernel: [  326.010293]  [<ffffffffa0098e0d>] radeon_fence_wait+0x296/0x33d [radeon]
Oct 21 00:50:05 nipah kernel: [  326.010296]  [<ffffffff81073426>] ? remove_wait_queue+0x3a/0x3a
Oct 21 00:50:05 nipah kernel: [  326.010305]  [<ffffffffa0099401>] radeon_sync_obj_wait+0x11/0x13 [radeon]
Oct 21 00:50:05 nipah kernel: [  326.010310]  [<ffffffffa00605fe>] ttm_bo_wait+0xbf/0x17a [ttm]
Oct 21 00:50:05 nipah kernel: [  326.010313]  [<ffffffffa0061031>] ? ttm_bo_list_ref_sub+0x29/0x2b [ttm]
Oct 21 00:50:05 nipah kernel: [  326.010325]  [<ffffffffa00a9e7b>] radeon_bo_wait+0x7b/0x9f [radeon]
Oct 21 00:50:05 nipah kernel: [  326.010337]  [<ffffffffa00aa3dd>] radeon_gem_wait_idle_ioctl+0x3d/0x70 [radeon]
Oct 21 00:50:05 nipah kernel: [  326.010343]  [<ffffffffa0015784>] drm_ioctl+0x29e/0x37b [drm]
Oct 21 00:50:05 nipah kernel: [  326.010353]  [<ffffffffa00aa3a0>] ? radeon_gem_busy_ioctl+0x86/0x86 [radeon]
Oct 21 00:50:05 nipah kernel: [  326.010356]  [<ffffffff811de8d4>] ? inode_has_perm+0x32/0x34
Oct 21 00:50:05 nipah kernel: [  326.010358]  [<ffffffff811de97d>] ? file_has_perm+0xa7/0xc9
Oct 21 00:50:05 nipah kernel: [  326.010360]  [<ffffffff81136f33>] do_vfs_ioctl+0x452/0x493
Oct 21 00:50:05 nipah kernel: [  326.010363]  [<ffffffff810a3a61>] ? audit_syscall_exit+0x12e/0x14a
Oct 21 00:50:05 nipah kernel: [  326.010365]  [<ffffffff81136fca>] sys_ioctl+0x56/0x7c
Oct 21 00:50:05 nipah kernel: [  326.010368]  [<ffffffff814bc375>] ? int_check_syscall_exit_work+0x34/0x3d
Oct 21 00:50:05 nipah kernel: [  326.010370]  [<ffffffff814bc0c2>] system_call_fastpath+0x16/0x1b
Oct 21 00:50:05 nipah kernel: [  326.010371] ---[ end trace 7a55d0d4ee5a8516 ]---
Oct 21 00:50:05 nipah kernel: [  326.011453] radeon 0000:01:00.0: GPU softreset 
Oct 21 00:50:05 nipah kernel: [  326.011455] radeon 0000:01:00.0:   GRBM_STATUS=0xA0003828
Oct 21 00:50:05 nipah kernel: [  326.011457] radeon 0000:01:00.0:   GRBM_STATUS_SE0=0x00000007
Oct 21 00:50:05 nipah kernel: [  326.011459] radeon 0000:01:00.0:   GRBM_STATUS_SE1=0x00000007
Oct 21 00:50:05 nipah kernel: [  326.011462] radeon 0000:01:00.0:   SRBM_STATUS=0x200000C0
Oct 21 00:50:05 nipah kernel: [  326.011481] radeon 0000:01:00.0:   GRBM_SOFT_RESET=0x00007F6B
Oct 21 00:50:05 nipah kernel: [  326.011585] radeon 0000:01:00.0:   GRBM_STATUS=0x00003828
Oct 21 00:50:05 nipah kernel: [  326.011587] radeon 0000:01:00.0:   GRBM_STATUS_SE0=0x00000007
Oct 21 00:50:05 nipah kernel: [  326.011589] radeon 0000:01:00.0:   GRBM_STATUS_SE1=0x00000007
Oct 21 00:50:05 nipah kernel: [  326.011591] radeon 0000:01:00.0:   SRBM_STATUS=0x200000C0
Oct 21 00:50:05 nipah kernel: [  326.012594] radeon 0000:01:00.0: GPU reset succeed
Oct 21 00:50:05 nipah kernel: [  326.081093] radeon 0000:01:00.0: WB enabled
Oct 21 00:50:05 nipah kernel: [  326.097287] [drm] ring test succeeded in 0 usecs
Oct 21 00:50:05 nipah kernel: [  326.097293] [drm] ib test succeeded in 1 usecs

Created attachment 529405 [details]
gnome-shell.stack

Reproduced again scrolling a pdf.

kernel-3.1.0-0.rc10.git0.1.fc16.x86_64
gnome-shell-3.2.1-1.fc16.x86_64
xorg-x11-drv-ati-6.14.2-2.20110727git8c9266ed2.fc16.x86_64

The complete gnome-shell stack as attachment.
Probably the intresting part is the Thread 1:

Thread 1 (Thread 0x7f26a0d5e9c0 (LWP 1692)):
#0  r600_fence_finish (pscreen=<optimized out>, fence=0x31b3840, timeout=18446744073709551615) at r600_pipe.c:621
#1  0x00007f2694f60edd in st_finish (st=0x2591f90) at state_tracker/st_cb_flush.c:106
#2  0x00007f2694f60f10 in st_glFinish (ctx=<optimized out>) at state_tracker/st_cb_flush.c:141
#3  0x00007f269ed4894c in _cogl_winsys_onscreen_swap_region (onscreen=<optimized out>, user_rectangles=<optimized out>, n_rectangles=1) at winsys/cogl-winsys-glx.c:1205
#4  0x00007f269f1a65c0 in clutter_stage_cogl_redraw (stage_window=0x259d1b0) at cogl/clutter-stage-cogl.c:534
#5  0x00007f269f20839a in clutter_stage_do_redraw (stage=0x260b170) at ./clutter-stage.c:1023
#6  _clutter_stage_do_update (stage=0x260b170) at ./clutter-stage.c:1079
#7  0x00007f269f1efba0 in clutter_clock_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at ./clutter-master-clock.c:384
#8  0x00007f269d38ca7d in g_main_dispatch (context=0x223d810) at gmain.c:2425
#9  g_main_context_dispatch (context=0x223d810) at gmain.c:2995
#10 0x00007f269d38d278 in g_main_context_iterate (context=0x223d810, block=<optimized out>, dispatch=1, self=<optimized out>) at gmain.c:3073
#11 0x00007f269d38d7c5 in g_main_loop_run (loop=0x2242430) at gmain.c:3281
#12 0x00007f26a0417aa1 in meta_run () at core/main.c:555
#13 0x00000000004029e1 in main (argc=1, argv=0x7fffa6dc3bc8) at main.c:571


radeon 0000:01:00.0: GPU lockup CP stall for more than 10006msec
------------[ cut here ]------------
WARNING: at drivers/gpu/drm/radeon/radeon_fence.c:267 radeon_fence_wait+0x296/0x33d [radeon]()
Hardware name: System Product Name
GPU lockup (waiting for 0x00002148 last fence id 0x00002142)
Modules linked in: sctp libcrc32c ppdev parport_pc lp parport fuse ebtable_nat ebtables lockd ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle tun bridge stp llc ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack snd_hda_codec_hdmi snd_hda_codec_realtek joydev eeepc_wmi asus_wmi sparse_keymap rfkill microcode i2c_i801 serio_raw snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm e1000e iTCO_wdt iTCO_vendor_support snd_timer snd soundcore snd_page_alloc virtio_net kvm_intel kvm uinput sunrpc mxm_wmi firewire_ohci firewire_core crc_itu_t wmi radeon ttm drm_kms_helper drm i2c_algo_bit i2c_core [last unloaded: scsi_wait_scan]
Pid: 1168, comm: Xorg Not tainted 3.1.0-0.rc9.git0.0.fc16.x86_64 #1
Call Trace:
 [<ffffffff81057a56>] warn_slowpath_common+0x83/0x9b
 [<ffffffff81057b11>] warn_slowpath_fmt+0x46/0x48
 [<ffffffffa00d26d4>] ? evergreen_gpu_is_lockup+0xbb/0xc3 [radeon]
 [<ffffffffa0098e0d>] radeon_fence_wait+0x296/0x33d [radeon]
 [<ffffffff81073426>] ? remove_wait_queue+0x3a/0x3a
 [<ffffffffa0099401>] radeon_sync_obj_wait+0x11/0x13 [radeon]
 [<ffffffffa00605fe>] ttm_bo_wait+0xbf/0x17a [ttm]
 [<ffffffffa0061031>] ? ttm_bo_list_ref_sub+0x29/0x2b [ttm]
 [<ffffffffa00a9e7b>] radeon_bo_wait+0x7b/0x9f [radeon]
 [<ffffffffa00aa3dd>] radeon_gem_wait_idle_ioctl+0x3d/0x70 [radeon]
 [<ffffffffa0015784>] drm_ioctl+0x29e/0x37b [drm]
 [<ffffffffa00aa3a0>] ? radeon_gem_busy_ioctl+0x86/0x86 [radeon]
 [<ffffffff811de8d4>] ? inode_has_perm+0x32/0x34
 [<ffffffff811de97d>] ? file_has_perm+0xa7/0xc9
 [<ffffffff81136f33>] do_vfs_ioctl+0x452/0x493
 [<ffffffff810a3a61>] ? audit_syscall_exit+0x12e/0x14a
 [<ffffffff81136fca>] sys_ioctl+0x56/0x7c
 [<ffffffff814bc375>] ? int_check_syscall_exit_work+0x34/0x3d
 [<ffffffff814bc0c2>] system_call_fastpath+0x16/0x1b
---[ end trace 26fa94e559966ee4 ]---
radeon 0000:01:00.0: GPU softreset 
radeon 0000:01:00.0:   GRBM_STATUS=0xA0003828
radeon 0000:01:00.0:   GRBM_STATUS_SE0=0x00000007
radeon 0000:01:00.0:   GRBM_STATUS_SE1=0x00000007
radeon 0000:01:00.0:   SRBM_STATUS=0x200000C0
radeon 0000:01:00.0:   GRBM_SOFT_RESET=0x00007F6B
radeon 0000:01:00.0:   GRBM_STATUS=0x00003828
radeon 0000:01:00.0:   GRBM_STATUS_SE0=0x00000007
radeon 0000:01:00.0:   GRBM_STATUS_SE1=0x00000007
radeon 0000:01:00.0:   SRBM_STATUS=0x200000C0
radeon 0000:01:00.0: GPU reset succeed
radeon 0000:01:00.0: WB enabled
[drm] ring test succeeded in 0 usecs
[drm] ib test succeeded in 1 usecs

Please don't set needinfo against maintainers. They have many open bugs.

Chuck, I am in contact with David for this issue since weeks.
He asked me to open this bug and even yesterday morning I spoke with him about how to debug it.
It is appropriate to raise his attention to the new gnome-shell.stack.

Created attachment 529446 [details]
Mesa-7.11-no-radeon-fence.patch

Reverting the patch:

http://cgit.freedesktop.org/mesa/mesa/commit/?id=948e1eb8e9c166ad5b74abc630d0760768ce78c9

seems to fix the problem.

Scratch builds can be found at:

http://fsimonce.fedorapeople.org/mesa/

Patch works for me too. I'm able to use gnome-shell without freezing now.
Without the patch gnome-shell + scrolling PDF in Evince caused always freezing.

graphics card: Radeon HD5850

Does it lockup with mesa from git ?

(In reply to comment #10)
> Does it lockup with mesa from git ?

I tested git version (commit 19b10251) without any patches and it crashed on GDM almost immidiately.

Not sure if it's helpful but I tried mesa version from koji:

1) Boot Fedora Live-USB and installed a new mesa version

http://koji.fedoraproject.org/koji/buildinfo?buildID=276852

# rpm --force -ivh *
Preparing...                ########################################### [100%]
   1:llvm-libs              ########################################### [ 25%]
   2:mesa-dri-filesystem    ########################################### [ 50%]
   3:mesa-dri-drivers       ########################################### [ 75%]
   4:llvm                   ########################################### [100%]
[root@localhost Downloads]# ls -l
total 17692
-rw-rw-r--. 1 liveuser liveuser  1125557 Dec  6 09:01 llvm-3.0-0.1.rc3.fc17.x86_64.rpm
-rw-rw-r--. 1 liveuser liveuser  6229085 Dec  6 09:02 llvm-libs-3.0-0.1.rc3.fc17.x86_64.rpm
-rw-rw-r--. 1 liveuser liveuser 10733269 Dec  6 08:59 mesa-dri-drivers-7.12-0.5.fc17.x86_64.rpm
-rw-rw-r--. 1 liveuser liveuser    20649 Dec  6 08:59 mesa-dri-filesystem-7.12-0.5.fc17.x86_64.rpm

2) CTRL-ALT-Backspace

3) Koji version seems to work without problems

The problem is still present. Reading PDF files with evince is still a pain.

kernel-3.2.1-3.fc16.x86_64
mesa-dri-drivers-7.11.2-1.fc16.x86_64
xorg-x11-drv-ati-6.14.3-3.20111125git534fb6e41.fc16.x86_64

Can anyone look at the stack trace or at the proposed patch so that we can actually understand what is going on?

Hi everyone,

I came across many ABRT reports for radeon_fence errors & while working on report #721140 as well as attempting to duplicate this error on my AMD/ATI (AMD A8-3520 APU with Radeon HD 6620G GPU) hardware, I have received feedback and witnessed on my hardware that this error may have been resolved with F16 software with current updates.

On testing on my hardware, I received no errors scrolling 3 different PDFs, however I am using a different Radeon GPU and this was tested using Okular viewer on a KDE 4.8.3 environment.  I'm not sure if this would have tossed in enough outside variables for a different result.

I hope that I am not out of line for commenting on this report, and if so I deeply apologize. However I was triaging some of the aged reports and came across a handful of these radeon_fence error reports generated by ABRT.  If I can offer any assistance, please let me know and I'll do anything I can to help.

---
Jason
Fedora Bugzappers volunteer triage team
https://fedoraproject.org/wiki/BugZappers

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http://fedoraproject.org/wiki/BugZappers/HouseKeeping

Fedora 16 changed to end-of-life (EOL) status on 2013-02-12. Fedora 16 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.