http://bugs.freedesktop.org/show_bug.cgi?id=26438





--- Comment #5 from Shawn Starr <shawn.st...@rogers.com>  2010-02-12 14:49:51 
PST ---
Today's crash information:

playing Second Life, I managed to trigger a drm error that did not lock up GPU,
a 2nd time trying the same steps resulted in the GPU lockup with a kernel oops:

1) in Second Life, I started game, did not have VBOs on and it used the default
128MB for textures
2) Set texture memory size to 256MB (max limit in drm right now) and enable VBO
support.

Results:

Feb 12 15:53:56 segfault kernel: [  838.349029] [drm:radeon_ib_get] *ERROR* IB
8 scheduled without a fence.
Feb 12 15:53:56 segfault kernel: [  838.349033] [drm:radeon_cs_ioctl] *ERROR*
Failed to get ib !

Took off VBOs for a bit then reenabled them and kernel panic'd not long after:

Feb 12 17:42:09 segfault kernel: [ 7331.346783] ------------[ cut here
]------------
Feb 12 17:42:09 segfault kernel: [ 7331.346794] WARNING: at lib/kref.c:43
kref_get+0x23/0x2d()
Feb 12 17:42:09 segfault kernel: [ 7331.346797] Hardware name: 4058CTO
Feb 12 17:42:09 segfault kernel: [ 7331.346799] Modules linked in: aes_x86_64
aes_generic ipv6 radeon ttm drm_kms_helper drm i2c_algo_bit acpi_cpufreq
cpufreq_conservative cpufreq_ondemand cpufreq_powersave cpufreq_stats
freq_table uinput fuse coretemp firewire_sbp2 snd_usb_audio uvcvideo videodev
v4l1_compat snd_usb_lib v4l2_compat_ioctl32 snd_hda_codec_conexant
snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm
snd_seq_dummy arc4 thinkpad_acpi hwmon snd_seq_oss ecb snd_seq_midi iwlagn
snd_rawmidi iwlcore snd_seq_midi_event i2c_i801 mac80211 joydev snd_seq
snd_timer i2c_core snd_seq_device snd cfg80211 rfkill wmi soundcore
snd_page_alloc sdhci_pci sdhci firewire_ohci firewire_core crc_itu_t mmc_core
ricoh_mmc ata_generic pata_acpi e1000e video output [last unloaded:
scsi_wait_scan]
Feb 12 17:42:09 segfault kernel: [ 7331.346895] Pid: 4561, comm:
do-not-directly Not tainted 2.6.33-rc7-custom-00280-g23e1ef0 #1
Feb 12 17:42:09 segfault kernel: [ 7331.346899] Call Trace:
Feb 12 17:42:09 segfault kernel: [ 7331.346907]  [<ffffffff81049640>]
warn_slowpath_common+0x7c/0x94
Feb 12 17:42:09 segfault kernel: [ 7331.346913]  [<ffffffff8104966c>]
warn_slowpath_null+0x14/0x16
Feb 12 17:42:09 segfault kernel: [ 7331.346918]  [<ffffffff8121453a>]
kref_get+0x23/0x2d
Feb 12 17:42:09 segfault kernel: [ 7331.346945]  [<ffffffffa0333552>]
radeon_fence_ref+0x1a/0x21 [radeon]
Feb 12 17:42:09 segfault kernel: [ 7331.346969]  [<ffffffffa033543f>]
radeon_bo_list_validate+0xac/0xf4 [radeon]
Feb 12 17:42:09 segfault kernel: [ 7331.346996]  [<ffffffffa034661d>]
radeon_cs_parser_relocs+0x19d/0x1fb [radeon]
Feb 12 17:42:09 segfault kernel: [ 7331.347023]  [<ffffffffa0346a6c>]
radeon_cs_ioctl+0xca/0x1a2 [radeon]
Feb 12 17:42:09 segfault kernel: [ 7331.347050]  [<ffffffffa0344ca1>] ?
radeon_gem_busy_ioctl+0x7a/0x86 [radeon]
Feb 12 17:42:09 segfault kernel: [ 7331.347066]  [<ffffffffa02c9512>]
drm_ioctl+0x25f/0x371 [drm]
Feb 12 17:42:09 segfault kernel: [ 7331.347073]  [<ffffffff8106a8b6>] ?
sched_clock_cpu+0xc3/0xce
Feb 12 17:42:09 segfault kernel: [ 7331.347099]  [<ffffffffa03469a2>] ?
radeon_cs_ioctl+0x0/0x1a2 [radeon]
Feb 12 17:42:09 segfault kernel: [ 7331.347105]  [<ffffffff8106a78d>] ?
sched_clock_local+0x1c/0x82
Feb 12 17:42:09 segfault kernel: [ 7331.347113]  [<ffffffff8110b4cf>] ?
rcu_read_unlock+0x0/0x23
Feb 12 17:42:09 segfault kernel: [ 7331.347118]  [<ffffffff8106a8b6>] ?
sched_clock_cpu+0xc3/0xce
Feb 12 17:42:09 segfault kernel: [ 7331.347124]  [<ffffffff8106a904>] ?
cpu_clock+0x43/0x5e
Feb 12 17:42:09 segfault kernel: [ 7331.347130]  [<ffffffff811174b0>]
vfs_ioctl+0x32/0xa6
Feb 12 17:42:09 segfault kernel: [ 7331.347135]  [<ffffffff81117a30>]
do_vfs_ioctl+0x490/0x4d6
Feb 12 17:42:09 segfault kernel: [ 7331.347141]  [<ffffffff8110b4f0>] ?
rcu_read_unlock+0x21/0x23
Feb 12 17:42:09 segfault kernel: [ 7331.347147]  [<ffffffff8110b5d6>] ?
fget_light+0xe4/0xf2
Feb 12 17:42:09 segfault kernel: [ 7331.347153]  [<ffffffff8110b549>] ?
fget_light+0x57/0xf2
Feb 12 17:42:09 segfault kernel: [ 7331.347158]  [<ffffffff81117acc>]
sys_ioctl+0x56/0x79
Feb 12 17:42:09 segfault kernel: [ 7331.347165]  [<ffffffff81009c32>]
system_call_fastpath+0x16/0x1b
Feb 12 17:42:09 segfault kernel: [ 7331.347170] ---[ end trace 19e4068e6daee7fc
]---


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