[Bug 23622] New: probably radeon kms / memory shortage related scheduling while atomic

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=23622

           Summary: probably radeon kms / memory shortage related
                    scheduling while atomic
           Product: Drivers
           Version: 2.5
    Kernel Version: 2.6.36-tp42-gtt-vram-apart-v2-dirty
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
        AssignedTo: drivers_video-dri@kernel-bugs.osdl.org
        ReportedBy: Martin@Lichtvoll.de
        Regression: Yes


Yesterday on using a translation plasmoid on KDE 4.5.3/4.5.1 I got a backtrace
loop with scheduling while atomic on my ThinkPad T42 with Radeon KMS. Since I
hadn't another machine up to SSH into my laptop and I was not able to get into
a tty, I rebooted it. But I think the kernel was still running. Harddisk LED
were active from time to time.

Nov 22 21:56:51 shambhala kernel: [drm:radeon_cs_ioctl] *ERROR* Failed to parse
relocation -12!
Nov 22 22:02:18 shambhala kernel: [drm:radeon_cs_ioctl] *ERROR* Failed to parse
relocation -12!
Nov 22 22:03:48 shambhala kernel: [drm:radeon_cs_ioctl] *ERROR* Failed to parse
relocation -12!
Nov 22 22:05:02 shambhala /USR/SBIN/CRON[14505]: (root) CMD (command -v
debian-sa1 > /dev/null && debian-sa1 1 1)
Nov 22 22:06:05 shambhala kernel: [TTM] Failed to find memory space for buffer
0xeff8902c eviction.
Nov 22 22:06:05 shambhala kernel: [TTM] No space for eff8902c (1444 pages,
5776K, 5M)
Nov 22 22:06:05 shambhala kernel: [TTM]   placement[0]=0x00070002 (1)
Nov 22 22:06:05 shambhala kernel: [TTM]     has_type: 1
Nov 22 22:06:05 shambhala kernel: [TTM]     use_type: 1
Nov 22 22:06:05 shambhala kernel: [TTM]     flags: 0x00000002
Nov 22 22:06:05 shambhala kernel: [TTM]     gpu_offset: 0xD0000000
Nov 22 22:06:05 shambhala kernel: [TTM]     size: 65536
Nov 22 22:06:05 shambhala kernel: [TTM]     available_caching: 0x00060000
Nov 22 22:06:05 shambhala kernel: [TTM]     default_caching: 0x00040000
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00000000-0x00000100:      256: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00000100-0x00000101:        1: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00000101-0x00000201:      256: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00000201-0x000007a5:     1444: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x000007a5-0x00000d51:     1452: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00000d51-0x00000da7:       86: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00000da7-0x00000de5:       62: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00000de5-0x00000e19:       52: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00000e19-0x00000e23:       10: free
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00000e23-0x00000e51:       46: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00000e51-0x0000125a:     1033: free
Nov 22 22:06:05 shambhala kernel: [TTM]  0x0000125a-0x0000146a:      528: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x0000146a-0x000015ea:      384: free
Nov 22 22:06:05 shambhala kernel: [TTM]  0x000015ea-0x00001614:       42: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00001614-0x00001633:       31: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00001633-0x00001651:       30: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00001651-0x00001b30:     1247: free
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00001b30-0x00001b4f:       31: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00001b4f-0x00001b8d:       62: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00001b8d-0x00001b9b:       14: free
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00001b9b-0x00001bcd:       50: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00001bcd-0x00001d6b:      414: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00001d6b-0x00001d8a:       31: free
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00001d8a-0x00001f88:      510: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00001f88-0x0000252c:     1444: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x0000252c-0x000026b3:      391: free
Nov 22 22:06:05 shambhala kernel: [TTM]  0x000026b3-0x00002709:       86: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00002709-0x0000275f:       86: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x0000275f-0x00002793:       52: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00002793-0x000027eb:       88: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x000027eb-0x0000283a:       79: free
Nov 22 22:06:05 shambhala kernel: [TTM]  0x0000283a-0x00002886:       76: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00002886-0x000028b0:       42: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x000028b0-0x000028b4:        4: free
Nov 22 22:06:05 shambhala kernel: [TTM]  0x000028b4-0x00002dbf:     1291: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00002dbf-0x00002de9:       42: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00002de9-0x00002e1a:       49: free
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00002e1a-0x00002e58:       62: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00002e58-0x00002e7d:       37: free
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00002e7d-0x00002ec3:       70: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00002ec3-0x00003403:     1344: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00003403-0x0000345b:       88: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x0000345b-0x00003499:       62: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00003499-0x0000349b:        2: free
Nov 22 22:06:05 shambhala kernel: [TTM]  0x0000349b-0x000034c9:       46: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x000034c9-0x00003520:       87: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00003520-0x00003a60:     1344: used
Nov 22 22:06:05 shambhala kernel: [TTM]  0x00003a60-0x00010000:    50592: free
Nov 22 22:06:05 shambhala kernel: [TTM]  total: 65536, used 11663 free 53873
Nov 22 22:06:05 shambhala kernel: BUG: unable to handle kernel NULL pointer
dereference at (null)
Nov 22 22:06:05 shambhala kernel: IP: [<f83eb8d1>] ttm_bo_reserve+0x61/0xe0
[ttm]
Nov 22 22:06:05 shambhala kernel: *pde = 00000000 
Nov 22 22:06:05 shambhala kernel: Oops: 0002 [#1] PREEMPT 
Nov 22 22:06:05 shambhala kernel: last sysfs file:
/sys/devices/pci0000:00/0000:00:1e.0/0000:02:02.0/rf_kill
Nov 22 22:06:05 shambhala kernel: Modules linked in: uvcvideo snd_usb_audio
snd_hwdep snd_usbmidi_lib videodev vboxnetadp vboxnetflt vboxdrv acpi_cpufreq
mperf cpufreq_userspace cpufreq_stats cpufreq_conservative cpufreq_powersave
ipv6 ppdev lp cn microcode fuse tun usblp ohci_hcd usb_storage usb_libusual
nls_iso8859_15 nls_iso8859_1 nls_cp850 ntfs vfat msdos fat reiserfs isofs udf
crc_itu_t smbfs pktcdvd uinput hdaps tp_smapi thinkpad_ec dm_crypt sata_sil
snd_intel8x0 snd_intel8x0m snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss
snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event
snd_seq pcmcia ipw2200 snd_timer yenta_socket libipw video pcmcia_rsrc
thinkpad_acpi cfg80211 led_class snd_seq_device rtc_cmos rtc_core snd joydev
evdev nvram output pcmcia_core rtc_lib snd_page_alloc rfkill i2c_i801
parport_pc lib80211 parport processor ac battery button dm_mod raid10 raid456
async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1
raid0 linear md_mod usbhid btrfs zlib_de
Nov 22 22:06:05 shambhala kernel: flate crc32c libcrc32c radeon ttm
drm_kms_helper drm hwmon i2c_algo_bit uhci_hcd ehci_hcd sg usbcore intel_agp
sr_mod cdrom agpgart thermal [last unloaded: uvcvideo]
Nov 22 22:06:05 shambhala kernel:
Nov 22 22:06:05 shambhala kernel: Pid: 2169, comm: Xorg Not tainted
2.6.36-tp42-gtt-vram-apart-v2-dirty #1 2373CXG/2373CXG
Nov 22 22:06:05 shambhala kernel: EIP: 0060:[<f83eb8d1>] EFLAGS: 00213206 CPU:
0
Nov 22 22:06:05 shambhala kernel: EIP is at ttm_bo_reserve+0x61/0xe0 [ttm]
Nov 22 22:06:05 shambhala kernel: EAX: 00000000 EBX: f381ec2c ECX: c33802ac
EDX: f381ecac
Nov 22 22:06:05 shambhala kernel: ESI: f381ec00 EDI: 00000000 EBP: ef2c3d38
ESP: ef2c3d1c
Nov 22 22:06:05 shambhala kernel: DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068
Nov 22 22:06:05 shambhala kernel: Process Xorg (pid: 2169, ti=ef2c2000
task=f6374b00 task.ti=ef2c2000)
Nov 22 22:06:05 shambhala kernel: Stack:
Nov 22 22:06:05 shambhala kernel: 00000000 00000000 ef2c3d34 00a51a00 f63675b0
f381ec00 ef2c3e0c ef2c3d5c
Nov 22 22:06:05 shambhala kernel: <0> f851a92f 00000000 00000000 00203202
f85300c9 ef2c3de4 f6367540 ef2c3e0c
Nov 22 22:06:05 shambhala kernel: <0> ef2c3d88 f851a9b7 000080d0 0000009c
00000003 f00acea0 f00acea0 ef2c3d88
Nov 22 22:06:05 shambhala kernel: Call Trace:
Nov 22 22:06:05 shambhala kernel: [<f851a92f>] ?
radeon_bo_list_reserve+0x3f/0x90 [radeon]
Nov 22 22:06:05 shambhala kernel: [<f85300c9>] ? T.619+0x29/0x50 [radeon]
Nov 22 22:06:05 shambhala kernel: [<f851a9b7>] ?
radeon_bo_list_validate+0x37/0x100 [radeon]
Nov 22 22:06:05 shambhala kernel: [<f85302dc>] ?
radeon_cs_parser_relocs+0x1ec/0x230 [radeon]
Nov 22 22:06:05 shambhala kernel: [<f85305d1>] ?
radeon_cs_parser_init+0x211/0x290 [radeon]
Nov 22 22:06:05 shambhala kernel: [<f85307a7>] ? radeon_cs_ioctl+0x97/0x1a0
[radeon]
Nov 22 22:06:05 shambhala kernel: [<c1059850>] ? enqueue_hrtimer+0x80/0xd0
Nov 22 22:06:05 shambhala kernel: [<f8383d57>] ? drm_ioctl+0x1d7/0x4c0 [drm]
Nov 22 22:06:05 shambhala kernel: [<f8530710>] ? radeon_cs_ioctl+0x0/0x1a0
[radeon]
Nov 22 22:06:05 shambhala kernel: [<c100b306>] ? restore_i387_fxsave+0x76/0x80
Nov 22 22:06:05 shambhala kernel: [<f8383b80>] ? drm_ioctl+0x0/0x4c0 [drm]
Nov 22 22:06:05 shambhala kernel: [<c10f17cd>] ? do_vfs_ioctl+0x8d/0x610
Nov 22 22:06:05 shambhala kernel: [<c103c349>] ? do_setitimer+0xb9/0x200
Nov 22 22:06:05 shambhala kernel: [<c102e25b>] ? pick_next_task_fair+0xdb/0x100
Nov 22 22:06:05 shambhala kernel: [<c103c4e1>] ? sys_setitimer+0x51/0xb0
Nov 22 22:06:05 shambhala kernel: [<c10f1d8e>] ? sys_ioctl+0x3e/0x60
Nov 22 22:06:05 shambhala kernel: [<c1002f23>] ? sysenter_do_call+0x12/0x2c
Nov 22 22:06:05 shambhala kernel: Code: d8 e8 a4 fd ff ff 85 c0 89 c7 0f 85 86
00 00 00 8b 8b 80 00 00 00 8d 93 80 00 00 00 31 c0 39 ca 74 1c 8b 83 84 00 00
00 89 41 04 <89> 08 b8 01 00 00 00 89 93 80 00 00 00 89 93 84 00 00 00 8b 4b 
Nov 22 22:06:05 shambhala kernel: EIP: [<f83eb8d1>] ttm_bo_reserve+0x61/0xe0
[ttm] SS:ESP 0068:ef2c3d1c
Nov 22 22:06:05 shambhala kernel: CR2: 0000000000000000
Nov 22 22:06:05 shambhala kernel: ---[ end trace 6a77c2cbfab014c4 ]---
Nov 22 22:06:05 shambhala kernel: note: Xorg[2169] exited with preempt_count 1
Nov 22 22:06:05 shambhala kernel: BUG: scheduling while atomic:
Xorg/2169/0x10000002
Nov 22 22:06:05 shambhala kernel: Modules linked in: uvcvideo snd_usb_audio
snd_hwdep snd_usbmidi_lib videodev vboxnetadp vboxnetflt vboxdrv acpi_cpufreq
mperf cpufreq_userspace cpufreq_stats cpufreq_conservative cpufreq_powersave
ipv6 ppdev lp cn microcode fuse tun usblp ohci_hcd usb_storage usb_libusual
nls_iso8859_15 nls_iso8859_1 nls_cp850 ntfs vfat msdos fat reiserfs isofs udf
crc_itu_t smbfs pktcdvd uinput hdaps tp_smapi thinkpad_ec dm_crypt sata_sil
snd_intel8x0 snd_intel8x0m snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss
snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event
snd_seq pcmcia ipw2200 snd_timer yenta_socket libipw video pcmcia_rsrc
thinkpad_acpi cfg80211 led_class snd_seq_device rtc_cmos rtc_core snd joydev
evdev nvram output pcmcia_core rtc_lib snd_page_alloc rfkill i2c_i801
parport_pc lib80211 parport processor ac battery button dm_mod raid10 raid456
async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1
raid0 linear md_mod usbhid btrfs zlib_de
Nov 22 22:06:05 shambhala kernel: flate crc32c libcrc32c radeon ttm
drm_kms_helper drm hwmon i2c_algo_bit uhci_hcd ehci_hcd sg usbcore intel_agp
sr_mod cdrom agpgart thermal [last unloaded: uvcvideo]
Nov 22 22:06:05 shambhala kernel: Pid: 2169, comm: Xorg Tainted: G      D    
2.6.36-tp42-gtt-vram-apart-v2-dirty #1
Nov 22 22:06:05 shambhala kernel: Call Trace:
Nov 22 22:06:05 shambhala kernel: [<c102ba91>] __schedule_bug+0x61/0x70
Nov 22 22:06:05 shambhala kernel: [<c13fd212>] schedule+0x4d2/0x5d0
Nov 22 22:06:05 shambhala kernel: [<c13fd450>] _cond_resched+0x30/0x50
Nov 22 22:06:05 shambhala kernel: [<c10c19e6>] unmap_vmas+0x576/0x5c0
[...]

Goes on like this. TTM memory allocation errors like in the beginning of above
except I had at 9:42 and in the afternoon already, without noticing them.

Probably related is

Bug 31859 - graphics corruption on display :0 when using two sessions
https://bugs.freedesktop.org/show_bug.cgi?id=31859

but I only used one KDE 4.5 session at that time. I even restarted it to get
rid of those graphics corruptions.

I am using Radeon KMS on ThinkPad T42 with:

00:01.0 PCI bridge: Intel Corporation 82855PM Processor to AGP Controller (rev
03) (prog-if 00 [Normal decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
        Latency: 96
        Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
        I/O behind bridge: 00003000-00003fff
        Memory behind bridge: c0100000-c01fffff
        Prefetchable memory behind bridge: e0000000-e7ffffff
        Secondary status: 66MHz+ FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- <SERR- <PERR-
        BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-

01:00.0 VGA compatible controller: ATI Technologies Inc RV350 [Mobility Radeon
9600 M10] (prog-if 00 [VGA controller])
        Subsystem: IBM Device 0550
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B+ DisINTx-
        Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 66 (2000ns min), Cache Line Size: 32 bytes
        Interrupt: pin A routed to IRQ 11
        Region 0: Memory at e0000000 (32-bit, prefetchable) [size=128M]
        Region 1: I/O ports at 3000 [size=256]
        Region 2: Memory at c0100000 (32-bit, non-prefetchable) [size=64K]
        [virtual] Expansion ROM at c0120000 [disabled] [size=128K]
        Capabilities: [58] AGP version 2.0
                Status: RQ=80 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans-
64bit- FW+ AGP3- Rate=x1,x2,x4
                Command: RQ=32 ArqSz=0 Cal=0 SBA+ AGP+ GART64- 64bit- FW-
Rate=x4
        Capabilities: [50] Power Management version 2
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Kernel driver in use: radeon

And kernel:

martin@shambhala:~> cat /proc/version
Linux version 2.6.36-tp42-gtt-vram-apart-v2-dirty (martin@shambhala) (gcc
version 4.4.5 (Debian 4.4.5-4) ) #1 PREEMPT Thu Oct 21 12:10:49 CEST 2010

(which is a plain 2.6.36 with second last patch I think to fix bug #28402)

And the following userspace:

martin@shambhala:~> apt-show-versions | egrep
"(xserver-xorg/|xserver-xorg-core/|xserver-xorg-video-radeon/|libgl1-mesa-dri/|kdelibs5/|kde-window-manager/|libqt4-gui/)"
kde-window-manager/experimental-snapshots uptodate 4:4.5.1-0r2
kdelibs5/experimental-snapshots uptodate 4:4.5.3-0r1
libgl1-mesa-dri/experimental uptodate 7.9+repack-1
libqt4-gui/squeeze uptodate 4:4.6.3-4
xserver-xorg/squeeze uptodate 1:7.5+8
xserver-xorg-core/squeeze uptodate 2:1.7.7-9
xserver-xorg-video-radeon/squeeze uptodate 1:6.13.1-2+squeeze1

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