Bug 108597

Seeing this on APL particularly on LSPCon as an HDCP repeater. HDCP failed at repeater authentication due to timeout.

Need debugging.

As on kbl with MCA lspcon HDCP1.4 is passing with Power_well fix posted at https://patchwork.freedesktop.org/patch/260059/

Need to check whether this is particular lspcon vendor's bug. Added a debugging patch to a series at https://patchwork.freedesktop.org/series/51968/.

The trybot result will shed some light on the issues.

On shard_kbl1, when kms_content_protection executed alone, authentication was passing but at https://intel-gfx-ci.01.org/tree/drm-tip/Trybot_3178/shard-kbl6/igt@kms_content_protection@atomic.html kms_content_protection is timedout at waiting for ksv_list.

Wondering whether sequence of the tests plays a role here? debug WIP.

(In reply to Ramalingam C from comment #3)
> On shard_kbl1, when kms_content_protection executed alone, authentication
> was passing but at
> https://intel-gfx-ci.01.org/tree/drm-tip/Trybot_3178/shard-kbl6/
> igt@kms_content_protection@atomic.html kms_content_protection is timedout at
> waiting for ksv_list.
> 
> Wondering whether sequence of the tests plays a role here? debug WIP.

This would not be the first time... Good luck!

Also seen on KBL: https://intel-gfx-ci.01.org/tree/drm-tip/IGT_4708/shard-kbl7/igt@kms_content_protection@atomic.html

Starting subtest: atomic
(kms_content_protection:1058) CRITICAL: Test assertion failure function test_cp_enable_disable, file ../tests/kms_content_protection.c:181:
(kms_content_protection:1058) CRITICAL: Failed assertion: ret
(kms_content_protection:1058) CRITICAL: Last errno: 25, Inappropriate ioctl for device
(kms_content_protection:1058) CRITICAL: Content Protection not enabled
Subtest atomic failed.

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_142/fi-skl-gvtdvm/igt@kms_content_protection@legacy.html

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_142/fi-skl-6770hq/igt@kms_content_protection@legacy.html

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_142/fi-skl-6770hq/igt@kms_content_protection@atomic.html

Starting subtest: atomic
(kms_content_protection:1508) CRITICAL: Test assertion failure function test_cp_enable_disable, file ../tests/kms_content_protection.c:181:
(kms_content_protection:1508) CRITICAL: Failed assertion: ret
(kms_content_protection:1508) CRITICAL: Last errno: 25, Inappropriate ioctl for device
(kms_content_protection:1508) CRITICAL: Content Protection not enabled
Subtest atomic failed.

A CI Bug Log filter associated to this bug has been updated:

{- APL SKL KBL: igt@kms_content_protection@(legacy|atomic) - fail - Content Protection not enabled -}
{+ APL SKL KBL ICL: igt@kms_content_protection@(legacy|atomic) - fail - Content Protection not enabled +}

New failures caught by the filter:

* https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_198/fi-icl-u2/igt@kms_content_protection@legacy.html
* https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_198/fi-icl-u3/igt@kms_content_protection@legacy.html
* https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_199/fi-icl-u2/igt@kms_content_protection@legacy.html
* https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_199/fi-icl-u3/igt@kms_content_protection@legacy.html
* https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_200/fi-icl-u2/igt@kms_content_protection@legacy.html
* https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_200/fi-icl-u3/igt@kms_content_protection@legacy.html
* https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_201/fi-icl-u2/igt@kms_content_protection@legacy.html
* https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_201/fi-icl-u3/igt@kms_content_protection@legacy.html

Martin,

We need to file different bugs for the content protection failures based on the cause for it. 
This is needed because few failures are due to the HDCP sink, which can't be fixed.

The cause has to be picked from the kernel demsg debug logs as given below. 

1. [drm:intel_hdcp_read_valid_bksv.isra.0 [i915]] Bksv is invalid
      Ex: https://intel-gfx-ci.01.org/tree/drm-tip/Trybot_3967/fi-icl-u3/igt@kms_content_protection@legacy.html

2. [drm:intel_hdcp_auth [i915]] KSV list failed to become ready (-110)
      Ex: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5750/shard-kbl5/igt@kms_content_protection@atomic.html


Could you please help with this? This bug can be used for one of the above bugs.

I finally took the time to split this bug! Sorry for the delay...

(In reply to Ramalingam C from comment #8)
> Martin,
> 
> We need to file different bugs for the content protection failures based on
> the cause for it. 
> This is needed because few failures are due to the HDCP sink, which can't be
> fixed.
> 
> The cause has to be picked from the kernel demsg debug logs as given below. 
> 
> 1. [drm:intel_hdcp_read_valid_bksv.isra.0 [i915]] Bksv is invalid
>       Ex:
> https://intel-gfx-ci.01.org/tree/drm-tip/Trybot_3967/fi-icl-u3/
> igt@kms_content_protection@legacy.html

https://bugs.freedesktop.org/show_bug.cgi?id=110322

> 
> 2. [drm:intel_hdcp_auth [i915]] KSV list failed to become ready (-110)
>       Ex:
> https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5750/shard-kbl5/
> igt@kms_content_protection@atomic.html

https://bugs.freedesktop.org/show_bug.cgi?id=110321


3. Timed out waiting for Ri prime match

https://bugs.freedesktop.org/show_bug.cgi?id=110325


> 
> 
> Could you please help with this? This bug can be used for one of the above
> bugs.

Done! And closing this one now, since it did not catch anything else but the above issues since drmtip_212 and the reproduction rate of the issue was every single drmtip run since 198.

The CI Bug Log issue associated to this bug has been archived.

New failures matching the above filters will not be associated to this bug anymore.