Bug 102671

Summary: [CI][IGT] igt@kms_atomic_transition@plane-all-transition-nonblocking Failed assertion: ret == 0
Product: DRI Reporter: Marta Löfstedt <marta.lofstedt>
Component: DRM/IntelAssignee: Maarten Lankhorst <bugs>
Status: CLOSED FIXED QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: normal    
Priority: high CC: intel-gfx-bugs
Version: DRI git   
Hardware: Other   
OS: All   
Whiteboard: ReadyForDev
i915 platform: HSW, SNB i915 features: display/Other
Attachments:
Description Flags
output
none
Dmesg none

Description Marta Löfstedt 2017-09-12 07:18:07 UTC 
On HSW-shard at CI_DRM_3071 and CI_DRM_3073
	

(kms_atomic_transition:1861) igt-kms-CRITICAL: Test assertion failure function igt_display_commit_atomic, file igt_kms.c:2752:
(kms_atomic_transition:1861) igt-kms-CRITICAL: Failed assertion: ret == 0
(kms_atomic_transition:1861) igt-kms-CRITICAL: Last errno: 16, Device or resource busy
(kms_atomic_transition:1861) igt-kms-CRITICAL: err


https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3071/shard-hsw1/igt@kms_atomic_transition@plane-all-transition-nonblocking.html

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3073/shard-hsw2/igt@kms_atomic_transition@plane-all-transition-nonblocking.html
Comment 3 Hector Velazquez 2017-09-20 16:05:31 UTC 
This test also fail on GLK QA

igt@kms_atomic_transition@plane-all-transition-nonblocking

====================================================
Output
====================================================
. . .
**** DEBUG ****
    populating plane data: B.2, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: B.3, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: B.4, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.0, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 1920 x 1080 dst = (0, 0) 1920 x 1080
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.1, fb 144
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 1920 x 1080 dst = (0, 0) 1920 x 1080
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.2, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 0 x 0 dst = (0, 0) 0 x 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.3, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 0 x 0 dst = (0, 0) 0 x 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.4, fb 143
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 256 x 256 dst = (0, 0) 256 x 256
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     eDP-1: preparing atomic, pipe: C
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     DP-1: preparing atomic, pipe: None
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     HDMI-A-1: preparing atomic, pipe: None
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     HDMI-A-2: preparing atomic, pipe: None
(kms_atomic_transition:1844) igt-kms-DEBUG: display: }
(kms_atomic_transition:1844) DEBUG: Retrieved vblank seq: 73765 on unk
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.0: plane_set_fb(0)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.0: fb_set_size(1920x1080)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.0: plane_set_size (1920x1080)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.1: plane_set_fb(0)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.2: plane_set_fb(144)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.2: fb_set_size(1920x1080)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.2: plane_set_size (1920x1080)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.3: plane_set_fb(0)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.4: plane_set_fb(0)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: commit {
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: A.0, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: A.1, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: A.2, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: A.3, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: A.4, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: B.0, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: B.1, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: B.2, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: B.3, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: B.4, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.0, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 1920 x 1080 dst = (0, 0) 1920 x 1080
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.1, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 0 x 0 dst = (0, 0) 0 x 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.2, fb 144
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 1920 x 1080 dst = (0, 0) 1920 x 1080
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.3, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 0 x 0 dst = (0, 0) 0 x 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.4, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 0 x 0 dst = (0, 0) 0 x 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     eDP-1: preparing atomic, pipe: C
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     DP-1: preparing atomic, pipe: None
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     HDMI-A-1: preparing atomic, pipe: None
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     HDMI-A-2: preparing atomic, pipe: None
(kms_atomic_transition:1844) igt-kms-DEBUG: display: }
(kms_atomic_transition:1844) DEBUG: Retrieved vblank seq: 73766 on unk
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.0: plane_set_fb(0)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.1: plane_set_fb(144)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.1: fb_set_size(1920x1080)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.1: plane_set_size (1920x1080)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.2: plane_set_fb(0)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.3: plane_set_fb(0)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.4: plane_set_fb(143)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.4: fb_set_size(256x256)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: C.4: plane_set_size (256x256)
(kms_atomic_transition:1844) igt-kms-DEBUG: display: commit {
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: A.0, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: A.1, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: A.2, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: A.3, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: A.4, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: B.0, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: B.1, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: B.2, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: B.3, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: B.4, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.0, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 0 x 0 dst = (0, 0) 0 x 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.1, fb 144
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 1920 x 1080 dst = (0, 0) 1920 x 1080
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.2, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 0 x 0 dst = (0, 0) 0 x 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.3, fb 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 0 x 0 dst = (0, 0) 0 x 0
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     populating plane data: C.4, fb 143
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     src = (0, 0) 256 x 256 dst = (0, 0) 256 x 256
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     eDP-1: preparing atomic, pipe: C
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     DP-1: preparing atomic, pipe: None
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     HDMI-A-1: preparing atomic, pipe: None
(kms_atomic_transition:1844) igt-kms-DEBUG: display:     HDMI-A-2: preparing atomic, pipe: None
(kms_atomic_transition:1844) igt-kms-DEBUG: display: }
(kms_atomic_transition:1844) igt-kms-CRITICAL: Test assertion failure function igt_display_commit_atomic, file igt_kms.c:2753:
(kms_atomic_transition:1844) igt-kms-CRITICAL: Failed assertion: ret == 0
(kms_atomic_transition:1844) igt-kms-CRITICAL: Last errno: 16, Device or resource busy
(kms_atomic_transition:1844) igt-kms-CRITICAL: error: -16 != 0
(kms_atomic_transition:1844) igt-core-INFO: Stack trace:
(kms_atomic_transition:1844) igt-core-INFO:   #0 [__igt_fail_assert+0x101]
(kms_atomic_transition:1844) igt-core-INFO:   #1 [igt_display_commit_atomic+0x44]
(kms_atomic_transition:1844) igt-core-INFO:   #2 [run_transition_test+0x7ef]
(kms_atomic_transition:1844) igt-core-INFO:   #3 [__real_main863+0x544]
(kms_atomic_transition:1844) igt-core-INFO:   #4 [main+0x23]
(kms_atomic_transition:1844) igt-core-INFO:   #5 [__libc_start_main+0xf1]
(kms_atomic_transition:1844) igt-core-INFO:   #6 [_start+0x29]
(kms_atomic_transition:1844) igt-core-INFO:   #7 [<unknown>+0x29]
****  END  ****
. . .

This is my configuration:

====================================================
Graphic Stack
====================================================
Component: drm
    tag: libdrm-2.4.81-55-g76418c2
    commit: 76418c244d4c52a8dd20809e3e8b4e70501fc76f

Component: cairo
    tag: 1.15.6-38-g1220e3c
    commit: 1220e3c6b8f94a00ac7afee15f21e6782655d97c

Component: intel-gpu-tools
    tag: intel-gpu-tools-1.19-312-gda197b5
    commit: da197b5f3cb516aaaea72d0d60b0f5c1c81081dd

Component: piglit
    tag: piglit-v1
    commit: 2753955998d7deb90f681cf4cb1253c4519dfd1d


======================================
             Software
======================================
kernel version              : 4.14.0-rc1-drm-tip-ww38-commit-ab2e3a0+
hostname                    : gfx-desktop
architecture                : x86_64
os version                  : Ubuntu 16.10
os codename                 : yakkety
kernel driver               : i915
bios revision               : 62.30
bios release date           : 08/22/2017
ksc                         : 1.48
hardware acceleration       : disabled
swap partition              : enabled on (/dev/sda3)

======================================
        Graphic drivers
======================================
grep: /opt/X11R7/var/log/Xorg.0.log: No such file or directory
libdrm                      : 2.4.83
cairo                       : 1.15.9
intel-gpu-tools (tag)       : intel-gpu-tools-1.19-312-gda197b5
intel-gpu-tools (commit)    : da197b5

======================================
             Hardware
======================================
platform                   : Geminilake
motherboard model          : Geminilake
motherboard id             : GLKRVP1DDR4(05)
form factor                : Hand Held
manufacturer               : IntelCorp.
cpu family                 : Pentium
cpu family id              : 6
cpu information            : Intel(R) Pentium(R) Silver J5005 CPU @ 1.50GHz
gpu card                   : Intel Corporation Device 3184 (rev 03) (prog-if 00 [VGA controller])
memory ram                 : 7.6 GB
max memory ram             : 16 GB
cpu thread                 : 4
cpu core                   : 4
cpu model                  : 122
cpu stepping               : 1
socket                     : Other
signature                  : Type 0, Family 6, Model 122, Stepping 1
hard drive                 : 111GiB (120GB)
current cd clock frequency : 316800 kHz
maximum cd clock frequency : 316800 kHz
displays connected         : eDP-1 DP-1 HDMI-A-2

======================================
             Firmware
======================================
dmc fw loaded             : yes
dmc version               : 1.4
guc fw loaded             : SUCCESS
guc version wanted        : 10.56
guc version found         : 10.56
huc fw loaded             : yes

======================================
             kernel parameters
======================================
quiet splash drm.debug=0xe i915.enable_guc_submission=2 i915.enable_guc_loading=2 i915.alpha_support=1 resume=/dev/sda3
Comment 4 Hector Velazquez 2017-09-20 16:07:09 UTC 
Created attachment 134374 [details]
output
Comment 5 Hector Velazquez 2017-09-20 16:08:30 UTC 
Created attachment 134375 [details]
Dmesg
Comment 6 Hector Velazquez 2017-09-27 20:57:22 UTC 
This test is still failing on GLK QA

Tests List:

igt@kms_atomic_transition@plane-all-transition-nonblocking



This is my configuration:

======================================
        Graphic stack
======================================
Component: drm
    tag: libdrm-2.4.81-56-g7c71188
    commit: 7c71188610b4ceba0339c2bc884320bcb749adee

Component: cairo
    tag: 1.15.6-42-gdccbed7
    commit: dccbed7d78d32bd3b912e8810379451dd94e6a1f

Component: intel-gpu-tools
    tag: intel-gpu-tools-1.19-332-g0a91a5e
    commit: 0a91a5e9624d41d23b79e2540eda111cb56d42d9

Component: piglit
    tag: piglit-v1
    commit: 95e2f51a28b6cf7ff77d84e1234121c98f10ef64
	
======================================
             Software
======================================
kernel version              : 4.14.0-rc2-drm-tip-ww39-commit-d76cbbc+
hostname                    : GLK-2-GLKRVP1DDR405
architecture                : x86_64
os version                  : Ubuntu 16.10
os codename                 : yakkety
kernel driver               : i915
bios revision               : 62.30
bios release date           : 08/22/2017
ksc                         : 1.41
hardware acceleration       : disabled
swap partition              : enabled on (/dev/sda3)

======================================
        Graphic drivers
======================================
grep: /opt/X11R7/var/log/Xorg.0.log: No such file or directory
libdrm                      : 2.4.83
cairo                       : 1.15.9
intel-gpu-tools (tag)       : intel-gpu-tools-1.19-332-g0a91a5e
intel-gpu-tools (commit)    : 0a91a5e

======================================
             Hardware
======================================
. . .

======================================
             Firmware
======================================
dmc fw loaded             : yes
dmc version               : 1.4
guc fw loaded             : SUCCESS
guc version wanted        : 10.56
guc version found         : 10.56
huc fw loaded             : yes

======================================
             kernel parameters
======================================
quiet drm.debug=0xe pci=pcie_bus_safe i915.alpha_support=1 i915.enable_guc_loading=2 i915.enable_guc_submission=2 intel_iommu=igfx_off auto panic=1 nmi_watchdog=panic resume=/dev/sda3 fastboot
Comment 7 Hector Velazquez 2017-10-03 14:14:49 UTC 
This test are passing on GLK QA

Tests List:

igt@gem_render_linear_blits@swap-thrash


====================================================
Output 
====================================================
. . .
IGT-Version: 1.19-g1e99f8b (x86_64) (Linux: 4.14.0-rc3-drm-tip-ww40-commit-2f14e31+ x86_64)
Running test on pipe A with resolution 1920x1080 and sprite size 1920x1080 alpha 1
Running test on pipe A with resolution 1920x1080 and sprite size 1920x1080 alpha 1
Running test on pipe A with resolution 1920x1080 and sprite size 1920x1080 alpha 1
Running test on pipe B with resolution 1920x1080 and sprite size 1920x1080 alpha 1
Running test on pipe B with resolution 1920x1080 and sprite size 1920x1080 alpha 1
Running test on pipe B with resolution 1920x1080 and sprite size 1920x1080 alpha 1
Running test on pipe C with resolution 1920x1080 and sprite size 1920x1080 alpha 1
Running test on pipe C with resolution 1920x1080 and sprite size 1920x1080 alpha 1
Running test on pipe C with resolution 1920x1080 and sprite size 1920x1080 alpha 1
Subtest plane-all-transition-nonblocking: SUCCESS (151.835s)
. . .


This is my configuration:

======================================
        Graphic stack
======================================
Component: drm
    tag: libdrm-2.4.81-57-g1dd84e0
    commit: 1dd84e01a972b1759839a7326009be24ab3e6de2

Component: cairo
    tag: 1.15.6-42-gdccbed7
    commit: dccbed7d78d32bd3b912e8810379451dd94e6a1f

Component: intel-gpu-tools
    tag: intel-gpu-tools-1.19-357-g1e99f8b
    commit: 1e99f8b8d2563d7f5c4e82932bab15abc5eacaef

Component: piglit
    tag: piglit-v1
    commit: 5aa6eea37f44f818632a3dad4c1a7478085bd56d

	
======================================
	     Software
======================================
kernel version              : 4.14.0-rc3-drm-tip-ww40-commit-2f14e31+
hostname                    : GLK-1-GLKRVP1DDR405
architecture                : x86_64
os version                  : Ubuntu 16.10
os codename                 : yakkety
kernel driver               : i915
bios revision               : 62.30
bios release date           : 08/22/2017
ksc                         : 1.41
hardware acceleration       : disabled
swap partition              : enabled on (/dev/sda3)

======================================
	Graphic drivers
======================================
libdrm                      : 2.4.83
cairo                       : 1.15.9
intel-gpu-tools (tag)       : intel-gpu-tools-1.19-357-g1e99f8b
intel-gpu-tools (commit)    : 1e99f8b

======================================
	     Hardware
======================================
platform                   : Geminilake
motherboard model          : Geminilake
motherboard id             : GLKRVP1DDR4(05)
form factor                : Hand Held
manufacturer               : IntelCorp.
cpu family                 : Other
cpu family id              : 6
cpu information            : Genuine Intel(R) CPU @ 1.10GHz
gpu card                   : Intel Corporation Device 3185 (rev 03) (prog-if 00 [VGA controller])
memory ram                 : 7.64 GB
max memory ram             : 16 GB
cpu thread                 : 2
cpu core                   : 2
cpu model                  : 122
cpu stepping               : 1
socket                     : Other
hard drive                 : 223GiB (240GB)
current cd clock frequency : 316800 kHz
maximum cd clock frequency : 316800 kHz
displays connected         : eDP-1 DP-1 HDMI-A-2

======================================
	     Firmware
======================================
dmc fw loaded             : yes
dmc version               : 1.4
guc fw loaded             : SUCCESS
guc version wanted        : 10.56
guc version found         : 10.56

======================================
	     kernel parameters
======================================
quiet drm.debug=0x1e pci=pcie_bus_safe intel_iommu=igfx_off auto panic=1 nmi_watchdog=panic i915.alpha_support=1 i915.enable_guc_loading=2 i915.enable_guc_submission=2 resume=/dev/sda3 fastboot

...since mark as pass test will removed from the list....
Comment 8 Hector Velazquez 2017-10-03 14:20:52 UTC 
sorry, in the comment 7 the test run was:

igt@kms_atomic_transition@plane-all-transition-nonblocking
Comment 9 Maarten Lankhorst 2017-10-16 11:20:47 UTC 
Seems to occur randomly, but I probably know what's going on now.

kms_atomic_transitions.plane_all_transitions calls wm_setup_plane which indiscriminately calls igt_plane_set_fb(plane, NULL); this is fine for planes which were bound to the crtc, but for unbound planes we have a separate completion event to prevent use-after-free. This is tested in the 'plane-use-after-nonblocking-unbind' subtest. When we call igt_plane_set_fb(plane, NULL) on a disabled plane, by accident we update its properties nonblockingly.

The unbound plane is not associated with a crtc, and thus has its own completion event on commit.

The nonblocking update does drm_atomic_helper_wait_for_flip_done(), followed some time later by drm_atomic_helper_commit_hw_done(). The commit_hw_done signals the unbound planes, so if the new atomic commit runs between wait_for_flip_done() and hw_done(), we get the -EBUSY here.

Fix is not blindly calling igt_plane_set_fb(plane, NULL) on disabled planes.
Comment 10 Maarten Lankhorst 2017-10-16 13:42:18 UTC 
After more digging, fixing igt is required but not sufficient.

Kernel also had a small bug that happened to have the same failure signature.
https://patchwork.freedesktop.org/series/32044/
Comment 11 Maarten Lankhorst 2017-10-24 12:21:07 UTC 
IGT:

commit ae3b166bf86fe27d165baf84494f98f4317e7726 (HEAD, origin/master, origin/HEAD)
Author: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Date:   Tue Oct 17 11:01:43 2017 +0200

    tests/kms_atomic_transition: Do not update unbound planes.

Kernel:

commit 4edd60847287c34222116af58f76be985ebddef7
Author: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Date:   Tue Oct 17 07:20:47 2017 +0200

    drm/atomic: Make atomic helper track newly assigned planes correctly, v2.
Comment 12 Marta Löfstedt 2017-10-25 09:40:11 UTC 
*** Bug 103173 has been marked as a duplicate of this bug. ***

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