[Piglit] Black screen / hang in piglit's spec at ext_texture_lod_bias@lodbias test on radionsi with ubuntu 16.04

Dan Kegel dank at kegel.com
Tue Sep 6 21:03:25 UTC 2016


Hi all,
happily running piglit on Ubuntu 16.04 with an AMD W600 card.  No
system crashes so far :-)
But I do have an X hang.  Black screen, test hung, but still available via ssh.

I looked in https://bugs.freedesktop.org/buglist.cgi?component=Drivers%2FGallium%2Fradeonsi&product=Mesa
but didn't see this hang mentioned offhand; I assume that's the right place.

Here's what I would file there.  Does this look about right?  Or is it
frowned upon to report
hangs from ubuntu releases rather than tip?

Thanks!
- Dan

---

On my dual Xeon with AMD W600 graphics card / stock ubuntu 16.04,
running piglit's spec at ext_texture_lod_bias@lodbias test hangs in
drmCommandWrite

To reproduce:

sudo apt-get install -y time libwaffle-dev python3-dev python3-nose
python3-six python3-numpy python3-matplotlib python3-scipy
libgles2-mesa-dev libgl1-mesa-dev
git clone git://anongit.freedesktop.org/git/piglit
cd piglit
cmake .
make -j4
python2 piglit run tests/sanity results/sanity
python2 piglit summary console results/sanity
python2 piglit run -1 -v --dmesg --sync -t texture tests/quick results/quick

This got to test 4005/4261 before something bad happened.
"python2 piglit summary console results/quick" says:

       name:  quick
       ----  ------
       pass:   5583
       fail:    213
      crash:      0
       skip:    394
    timeout:      0
       warn:      4
 incomplete:      1
 dmesg-warn:     20
 dmesg-fail:      0
    changes:      0
      fixes:      0
regressions:      0
      total:   6215

The incomplete test result is

{"spec at ext_texture_lod_bias@lodbias": {"returncode": null, "pid":
null, "result": "incomplete", "subtests": {"__type__": "Subtests"},
"out": "", "dmesg": "", "exception": null, "err": "", "traceback":
null, "__type__": "TestResult", "environment": "", "command": "",
"time": {"start": 0.0, "end": 0.0, "__type__": "TimeAttribute"}}}

and it looks like it's hung on an ioctl:

$ cat /etc/issue
Ubuntu 16.04.1 LTS \n \l
$ uname -a
Linux rbb-ubu1604-1 4.4.0-36-generic #55-Ubuntu SMP Thu Aug 11
18:01:55 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
$ apt-cache policy xserver-xorg-video-radeon
xserver-xorg-video-radeon:
  Installed: 1:7.7.0-1
$ ps augxw | grep piglit
buildbot 46308  3.2  0.5 1267912 115796 pts/1  Sl+  11:52   2:18
python2 piglit run -1 -v --dmesg --sync -t texture tests/quick
results/quick
buildbot 62511  0.7  0.2 181476 42584 pts/1    Sl+  12:34   0:12
/home/buildbot/src/piglit/bin/lodbias -auto
buildbot at rbb-ubu1604-1:~/.local/share/xorg$ sudo strace -p 62511
strace: Process 62511 attached
ioctl(6, DRM_IOCTL_RADEON_GEM_WAIT_IDLE

$ sudo gdb
(gdb) attach 62511
(gdb) bt
#0  0x00007fe2827c0687 in ioctl () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe281c0e0f8 in drmIoctl () from /usr/lib/x86_64-linux-gnu/libdrm.so.2
#2  0x00007fe281c10dbb in drmCommandWrite () from
/usr/lib/x86_64-linux-gnu/libdrm.so.2
#3  0x00007fe27cff6e2c in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007fe27cff83d7 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fe27d01c452 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#6  0x00007fe27cb4163d in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#7  0x00007fe27cab8cd8 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#8  0x00007fe27cb45105 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#9  0x00007fe27caba19f in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#10 0x00007fe27caba322 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#11 0x00007fe282dabbf0 in piglit_read_pixels_float (x=110, y=70,
width=1, height=1, format=6407, pixels=0x7fff34347e70)
    at /home/buildbot/src/piglit/tests/util/piglit-util-gl.c:1055
#12 0x00007fe282dac010 in piglit_probe_pixel_rgb (x=110, y=70,
expected=0x7fff34347f10) at
/home/buildbot/src/piglit/tests/util/piglit-util-gl.c:1149
#13 0x000000000040177f in probe_cell (testname=0x4025f8 "multitex",
cellx=2, celly=1, expected=0x7fff34347f10)
    at /home/buildbot/src/piglit/tests/texturing/lodbias.c:85
#14 0x0000000000401da2 in test_multitex_combo (bias1=-9, level1=2,
bias2=-13, level2=1) at
/home/buildbot/src/piglit/tests/texturing/lodbias.c:192
#15 0x0000000000401ed8 in test_multitex (bias1=-9, bias2=-13) at
/home/buildbot/src/piglit/tests/texturing/lodbias.c:221
#16 0x0000000000401fd4 in piglit_display () at
/home/buildbot/src/piglit/tests/texturing/lodbias.c:246
#17 0x00007fe282dd2275 in process_next_event (x11_fw=0x1ab7c20) at
/home/buildbot/src/piglit/tests/util/piglit-framework-gl/piglit_x11_framework.c:137
#18 0x00007fe282dd2335 in enter_event_loop (winsys_fw=0x1ab7c20) at
/home/buildbot/src/piglit/tests/util/piglit-framework-gl/piglit_x11_framework.c:153
#19 0x00007fe282dd176e in run_test (gl_fw=0x1ab7c20, argc=1,
argv=0x7fff343482b8)
    at /home/buildbot/src/piglit/tests/util/piglit-framework-gl/piglit_winsys_framework.c:88
#20 0x00007fe282db5d90 in piglit_gl_test_run (argc=1,
argv=0x7fff343482b8, config=0x7fff34348170)
    at /home/buildbot/src/piglit/tests/util/piglit-framework-gl.c:199
#21 0x00000000004016cd in main (argc=1, argv=0x7fff343482b8) at
/home/buildbot/src/piglit/tests/texturing/lodbias.c:55


$ sudo cat /var/log/kern.log
...
[ 3304.897193] [TTM] Illegal buffer object size
[ 3304.897239] [drm:radeon_gem_object_create [radeon]] *ERROR* Failed
to allocate GEM object (0, 2, 4096, -22)
[ 3304.897326] [TTM] Illegal buffer object size
[ 3304.897351] [drm:radeon_gem_object_create [radeon]] *ERROR* Failed
to allocate GEM object (0, 2, 4096, -22)
[ 3315.592187] perf interrupt took too long (5070 > 5000), lowering
kernel.perf_event_max_sample_rate to 25000
[ 3347.940586] [TTM] Illegal buffer object size
[ 3347.940638] [drm:radeon_gem_object_create [radeon]] *ERROR* Failed
to allocate GEM object (0, 2, 4096, -22)
[ 3347.940678] [TTM] Illegal buffer object size
[ 3347.940701] [drm:radeon_gem_object_create [radeon]] *ERROR* Failed
to allocate GEM object (0, 2, 4096, -22)
[ 3349.047906] [TTM] Failed to find memory space for buffer
0xffff880044987868 eviction
[ 3349.047913] [TTM] No space for ffff880044987868 (262144 pages,
1048576K, 1024M)
[ 3349.047917] [TTM]   placement[0]=0x00060002 (1)
[ 3349.047919] [TTM]     has_type: 1
[ 3349.047921] [TTM]     use_type: 1
[ 3349.047923] [TTM]     flags: 0x0000000A
[ 3349.047925] [TTM]     gpu_offset: 0x80000000
[ 3349.047927] [TTM]     size: 524288
[ 3349.047929] [TTM]     available_caching: 0x00070000
[ 3349.047931] [TTM]     default_caching: 0x00010000
[ 3349.048630] [TTM] Failed to find memory space for buffer
0xffff880044987868 eviction
[ 3349.048632] [TTM] No space for ffff880044987868 (262144 pages,
1048576K, 1024M)
[ 3349.048634] [TTM]   placement[0]=0x00060002 (1)
[ 3349.048635] [TTM]     has_type: 1
[ 3349.048636] [TTM]     use_type: 1
[ 3349.048637] [TTM]     flags: 0x0000000A
[ 3349.048638] [TTM]     gpu_offset: 0x80000000
[ 3349.048639] [TTM]     size: 524288
[ 3349.048640] [TTM]     available_caching: 0x00070000
[ 3349.048641] [TTM]     default_caching: 0x00010000
[ 3349.052755] [TTM] Failed to find memory space for buffer
0xffff880044987868 eviction
[ 3349.052758] [TTM] No space for ffff880044987868 (262144 pages,
1048576K, 1024M)
[ 3349.052759] [TTM]   placement[0]=0x00060002 (1)
[ 3349.052760] [TTM]     has_type: 1
[ 3349.052761] [TTM]     use_type: 1
[ 3349.052762] [TTM]     flags: 0x0000000A
[ 3349.052763] [TTM]     gpu_offset: 0x80000000
[ 3349.052764] [TTM]     size: 524288
[ 3349.052766] [TTM]     available_caching: 0x00070000
[ 3349.052767] [TTM]     default_caching: 0x00010000
[ 3349.052769] [TTM] Failed to find memory space for buffer
0xffff880044987868 eviction
[ 3349.052771] [TTM] No space for ffff880044987868 (262144 pages,
1048576K, 1024M)
[ 3349.052772] [TTM]   placement[0]=0x00060002 (1)
[ 3349.052773] [TTM]     has_type: 1
[ 3349.052774] [TTM]     use_type: 1
[ 3349.052775] [TTM]     flags: 0x0000000A
[ 3349.052776] [TTM]     gpu_offset: 0x80000000
[ 3349.052777] [TTM]     size: 524288
[ 3349.052778] [TTM]     available_caching: 0x00070000
[ 3349.052779] [TTM]     default_caching: 0x00010000
[ 3349.052840] [drm:radeon_cs_ioctl [radeon]] *ERROR* Failed to parse
relocation -12!
[ 5641.849863] DMAR: DRHD: handling fault status reg 2
[ 5641.849876] DMAR: INTR-REMAP: Request device [[00:00.0] fault index 18
[ 5641.849876] INTR-REMAP:[fault reason 38] Blocked an interrupt
request due to source-id verification failure
[ 6000.668710] INFO: task Xorg:6978 blocked for more than 120 seconds.
[ 6000.668718]       Not tainted 4.4.0-36-generic #55-Ubuntu
[ 6000.668720] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 6000.668723] Xorg            D ffff8800c8c53938     0  6978   6977 0x00000000
[ 6000.668730]  ffff8800c8c53938 0000000000000000 ffff880512e97080
ffff88050e008c80
[ 6000.668735]  ffff8800c8c54000 ffff8800c8c53a88 ffff88003553c000
ffff8800c8c53a20
[ 6000.668739]  ffff88003553d498 ffff8800c8c53950 ffffffff81829ec5
7fffffffffffffff
[ 6000.668743] Call Trace:
[ 6000.668756]  [<ffffffff81829ec5>] schedule+0x35/0x80
[ 6000.668760]  [<ffffffff8182cfe5>] schedule_timeout+0x1b5/0x270
[ 6000.668807]  [<ffffffffc0217ed2>] ? radeon_fence_process+0x12/0x30 [radeon]
[ 6000.668830]  [<ffffffffc02181a4>]
radeon_fence_wait_seq_timeout.constprop.8+0x234/0x320 [radeon]
[ 6000.668835]  [<ffffffff810c3cb0>] ? wake_atomic_t_function+0x60/0x60
[ 6000.668853]  [<ffffffffc021874f>] radeon_fence_wait_empty+0x7f/0xb0 [radeon]
[ 6000.668878]  [<ffffffffc0262189>]
radeon_pm_compute_clocks+0x5f9/0x870 [radeon]
[ 6000.668895]  [<ffffffffc0208da7>] atombios_crtc_dpms+0x67/0xf0 [radeon]
[ 6000.668912]  [<ffffffffc020a399>] atombios_crtc_disable+0x39/0x350 [radeon]
[ 6000.668939]  [<ffffffffc027f6e9>] ?
atombios_get_encoder_mode+0x119/0x1c0 [radeon]
[ 6000.668966]  [<ffffffffc0281b50>] ?
radeon_atom_encoder_disable+0xf0/0x170 [radeon]
[ 6000.668975]  [<ffffffffc01afbc6>]
__drm_helper_disable_unused_functions+0xa6/0xe0 [drm_kms_helper]
[ 6000.668981]  [<ffffffffc01b00c3>]
drm_crtc_helper_set_config+0x103/0xba0 [drm_kms_helper]
[ 6000.669005]  [<ffffffffc02ba07f>] ?
ni_dpm_vblank_too_short+0x1f/0x30 [radeon]
[ 6000.669025]  [<ffffffffc02257b4>] radeon_crtc_set_config+0x44/0x110 [radeon]
[ 6000.669050]  [<ffffffffc0041e32>]
drm_mode_set_config_internal+0x62/0x100 [drm]
[ 6000.669065]  [<ffffffffc004648c>] drm_mode_setcrtc+0x3cc/0x4f0 [drm]
[ 6000.669076]  [<ffffffffc0037742>] drm_ioctl+0x152/0x540 [drm]
[ 6000.669091]  [<ffffffffc00460c0>] ? drm_mode_setplane+0x1b0/0x1b0 [drm]
[ 6000.669107]  [<ffffffffc01fc04c>] radeon_drm_ioctl+0x4c/0x80 [radeon]
[ 6000.669110]  [<ffffffff81220c1f>] do_vfs_ioctl+0x29f/0x490
[ 6000.669113]  [<ffffffff8106b544>] ? __do_page_fault+0x1b4/0x400
[ 6000.669115]  [<ffffffff81220e89>] SyS_ioctl+0x79/0x90
[ 6000.669118]  [<ffffffff8182dfb2>] entry_SYSCALL_64_fastpath+0x16/0x71


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