Comment 42 for bug 509273

New information from the Red Hat bugzilla report (the problem may be in radeon_fence.c - line 159):

Mar 4 15:41:04 t41 kernel: WARNING: at
drivers/gpu/drm/radeon/radeon_fence.c:159 radeon_fence_signaled+0x56/0x83
[radeon]()
Mar 4 15:41:04 t41 kernel: Hardware name: 2373TG5
Mar 4 15:41:04 t41 kernel: Querying an unemited fence : f4fa7ba0 !
Mar 4 15:41:04 t41 kernel: Modules linked in: tun sunrpc cpufreq_ondemand
acpi_cpufreq ip6t_REJECT nf_conntrack_ipv6 ip6table_filter ip6_tables ipv6
uinput hdaps input_polldev arc4 ecb ath5k mac80211 ath ppdev cfg80211 nsc_ircc
snd_intel8x0 snd_intel8x0m parport_pc irda snd_ac97_codec snd_seq crc_ccitt
parport ac97_bus thinkpad_acpi rfkill iTCO_wdt iTCO_vendor_support
snd_seq_device snd_pcm e1000 snd_timer snd soundcore snd_page_alloc i2c_i801
joydev dm_multipath video output yenta_socket rsrc_nonstatic radeon ttm
drm_kms_helper drm i2c_algo_bit i2c_core [last unloaded: scsi_wait_scan]
Mar 4 15:41:04 t41 kernel: Pid: 1512, comm: Xorg Not tainted
2.6.32.9-64.fc12.i686 #1
Mar 4 15:41:04 t41 kernel: Call Trace:
Mar 4 15:41:04 t41 kernel: [<c043a2fd>] warn_slowpath_common+0x6a/0x81
Mar 4 15:41:04 t41 kernel: [<f7daf28c>] ? radeon_fence_signaled+0x56/0x83
[radeon]
Mar 4 15:41:04 t41 kernel: [<c043a352>] warn_slowpath_fmt+0x29/0x2c
Mar 4 15:41:04 t41 kernel: [<f7daf28c>] radeon_fence_signaled+0x56/0x83
[radeon]
Mar 4 15:41:04 t41 kernel: [<f7daf2f7>] radeon_fence_wait+0x3e/0x2a1 [radeon]
Mar 4 15:41:04 t41 kernel: [<f7daf66f>] ? radeon_fence_create+0x21/0xda
[radeon]
Mar 4 15:41:04 t41 kernel: [<f7dbda04>] radeon_ib_get+0xf4/0x19e [radeon]
Mar 4 15:41:04 t41 kernel: [<f7dbe87a>] radeon_cs_ioctl+0x80/0x162 [radeon]
Mar 4 15:41:04 t41 kernel: [<f7c9194f>] drm_ioctl+0x251/0x2fa [drm]
Mar 4 15:41:04 t41 kernel: [<f7dbe7fa>] ? radeon_cs_ioctl+0x0/0x162 [radeon]
Mar 4 15:41:04 t41 kernel: [<c04541f5>] ? autoremove_wake_function+0x0/0x34
Mar 4 15:41:04 t41 kernel: [<c0586d10>] ? file_has_perm+0x89/0xa3
Mar 4 15:41:04 t41 kernel: [<f7c916fe>] ? drm_ioctl+0x0/0x2fa [drm]
Mar 4 15:41:04 t41 kernel: [<c04e5826>] vfs_ioctl+0x1d/0x76
Mar 4 15:41:04 t41 kernel: [<c04e5dc0>] do_vfs_ioctl+0x493/0x4d1
Mar 4 15:41:04 t41 kernel: [<c0586fb4>] ? selinux_file_ioctl+0x43/0x46
Mar 4 15:41:04 t41 kernel: [<c04e5e44>] sys_ioctl+0x46/0x66
Mar 4 15:41:04 t41 kernel: [<c040365c>] syscall_call+0x7/0xb
Mar 4 15:41:04 t41 kernel: ---[ end trace d14a0fcc30e3dc30 ]---
Mar 4 15:41:04 t41 kernel: [drm:radeon_ib_schedule] *ERROR* radeon: couldn't
schedule IB(4).
Mar 4 15:41:04 t41 kernel: [drm:radeon_cs_ioctl] *ERROR* Faild to schedule IB
!