[Bug 60254] [r600g] kernel Oops when provoking GPU lock.

Mon Jan 6 06:13:05 PST 2014

https://bugs.freedesktop.org/show_bug.cgi?id=60254

--- Comment #3 from Johannes Hirte <johannes.hirte at datenkhaos.de> ---
I've observed this too, and it feels like it got worse within 3.13 development
process. This is the last one in the logs:

Jan  6 14:54:08 localhost kernel: radeon 0000:01:00.0: GPU lockup CP stall for
more than 10034msec
Jan  6 14:54:08 localhost kernel: radeon 0000:01:00.0: GPU lockup (waiting for
0x0000000000003dde last fence id 0x0000000000003ddd on ring 0)
Jan  6 14:54:08 localhost kernel: [drm:rv770_stop_dpm] *ERROR* Could not force
DPM to low.
Jan  6 14:54:08 localhost kernel: [drm] Disabling audio 0 support
Jan  6 14:54:08 localhost kernel: BUG: unable to handle kernel paging request
at ffffc90402080ffc
Jan  6 14:54:08 localhost kernel: IP: [<ffffffff813d8d9e>]
radeon_ring_backup+0xbe/0x140
Jan  6 14:54:08 localhost kernel: PGD 11b028067 PUD 0
Jan  6 14:54:08 localhost kernel: Oops: 0000 [#1] PREEMPT SMP
Jan  6 14:54:08 localhost kernel: Modules linked in: nfs lockd sunrpc
snd_hda_codec_hdmi snd_hda_codec_realtek ath9k snd_hda_intel ath9k_common
snd_hda_codec ath9k_hw snd_hwdep ath snd_pcm mac80211 snd_timer acer_wmi
broadcom cfg80211 snd i2c_piix4 rfkill tg3 k10temp wmi soundcore sr_mod cdrom
snd_page_alloc acpi_cpufreq ohci_pci ohci_hcd
Jan  6 14:54:08 localhost kernel: CPU: 1 PID: 2836 Comm: kwin Not tainted
3.13.0-rc7-00012-gf0a679a #183
Jan  6 14:54:08 localhost kernel: Hardware name: Packard Bell EasyNote
TK81/SJV52_DN, BIOS V2.14 07/27/2011
Jan  6 14:54:08 localhost kernel: task: ffff8800a81a7800 ti: ffff8800a8346000
task.ti: ffff8800a8346000
Jan  6 14:54:08 localhost kernel: RIP: 0010:[<ffffffff813d8d9e>] 
[<ffffffff813d8d9e>] radeon_ring_backup+0xbe/0x140
Jan  6 14:54:08 localhost kernel: RSP: 0018:ffff8800a8347ce8  EFLAGS: 00010246
Jan  6 14:54:08 localhost kernel: RAX: 0000000000000000 RBX: ffff88011a6d0f20
RCX: 0000000000000000
Jan  6 14:54:08 localhost kernel: RDX: 00000000000efc04 RSI: ffffc90402080ffc
RDI: ffffea000015ffc0
Jan  6 14:54:08 localhost kernel: RBP: 00000000ffffffff R08: ffff880005700000
R09: 00000000fffffffa
Jan  6 14:54:08 localhost kernel: R10: 0000000000000008 R11: 0000000000000100
R12: ffff88011a6d0ef8
Jan  6 14:54:08 localhost kernel: R13: 000000000003bf01 R14: ffff8800a8347d50
R15: 0000000000000000
Jan  6 14:54:08 localhost kernel: FS:  00007f1f6a8717c0(0000)
GS:ffff88011fc80000(0000) knlGS:0000000000000000
Jan  6 14:54:08 localhost kernel: CS:  0010 DS: 0000 ES: 0000 CR0:
000000008005003b
Jan  6 14:54:08 localhost kernel: CR2: ffffc90402080ffc CR3: 00000000a8314000
CR4: 00000000000007e0
Jan  6 14:54:08 localhost kernel: Stack:
Jan  6 14:54:08 localhost kernel: ffffffff813c5875 ffff88011a6d0000
ffff88011a6d0f20 ffff8800a8347d50
Jan  6 14:54:08 localhost kernel: 0000000000000000 ffff88011a6d0018
ffffffff813aad3e ffff88011a6d0700
Jan  6 14:54:08 localhost kernel: 00000001a8347df8 ffff88011a6d0f20
0000000000000000 ffff88006d74e048
Jan  6 14:54:08 localhost kernel: Call Trace:
Jan  6 14:54:08 localhost kernel: [<ffffffff813c5875>] ?
radeon_gart_table_vram_unpin+0x85/0x120
Jan  6 14:54:08 localhost kernel: [<ffffffff813aad3e>] ?
radeon_gpu_reset+0xae/0x250
Jan  6 14:54:08 localhost kernel: [<ffffffff813c5233>] ?
radeon_bo_wait+0xf3/0x150
Jan  6 14:54:08 localhost kernel: [<ffffffff813d6dc5>] ?
radeon_gem_handle_lockup.part.6+0x5/0x10
Jan  6 14:54:08 localhost kernel: [<ffffffff813841a5>] ? drm_ioctl+0x485/0x580
Jan  6 14:54:08 localhost kernel: [<ffffffff810a51b5>] ? do_futex+0x105/0xc70
Jan  6 14:54:08 localhost kernel: [<ffffffff813a8975>] ?
radeon_drm_ioctl+0x55/0xa0
Jan  6 14:54:08 localhost kernel: [<ffffffff8115d6b7>] ?
do_vfs_ioctl+0x2c7/0x490
Jan  6 14:54:08 localhost kernel: [<ffffffff810a5d9c>] ? SyS_futex+0x7c/0x170
Jan  6 14:54:08 localhost kernel: [<ffffffff811671df>] ? fget_light+0x8f/0xf0
Jan  6 14:54:08 localhost kernel: [<ffffffff8115d920>] ? SyS_ioctl+0xa0/0xc0
Jan  6 14:54:08 localhost kernel: [<ffffffff81638862>] ?
system_call_fastpath+0x16/0x1b
Jan  6 14:54:08 localhost kernel: Code: 49 89 06 74 78 41 8d 55 ff 49 89 c0 31
c9 48 8d 14 95 04 00 00 00 eb 08 0f 1f 44 00 00 4d 8b 06 48 8b 73 08 8d 45 01
48 8d 34 ae <8b> 36 41 89 34 08 23 43 64 48 83 c1 04 48 39 d1 89 c5 75 de 4c
Jan  6 14:54:08 localhost kernel: RIP  [<ffffffff813d8d9e>]
radeon_ring_backup+0xbe/0x140
Jan  6 14:54:08 localhost kernel: RSP <ffff8800a8347ce8>
Jan  6 14:54:08 localhost kernel: CR2: ffffc90402080ffc
Jan  6 14:54:08 localhost kernel: ---[ end trace 3e2cca537a43e686 ]---

Hardware is a HD 5470 (ChipID = 0x68e0)

Google points me to several bugreports from Red Hat/Fedora, so this bug seems
to be not uncommon.

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