From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 97460] [drm][amdgpu][CIK] drm_sysfs_connector - BUG: unable to handle kernel NULL pointer dereference at 0000000000000038 Date: Wed, 24 Aug 2016 15:16:32 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0495713813==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [IPv6:2610:10:20:722:a800:ff:fe98:4b55]) by gabe.freedesktop.org (Postfix) with ESMTP id 70C546E8DB for ; Wed, 24 Aug 2016 15:16:32 +0000 (UTC) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============0495713813== Content-Type: multipart/alternative; boundary="14720517920.bcDBFAe.16651"; charset="UTF-8" --14720517920.bcDBFAe.16651 Date: Wed, 24 Aug 2016 15:16:32 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated https://bugs.freedesktop.org/show_bug.cgi?id=3D97460 --- Comment #1 from Shawn Starr --- Adding some debug when not using Switchable Graphics: [ 10.048669] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x1e [ 10.048672] [drm] amdgpu_connector_add() no dp_bridge: connecter_type fo= und: 7 [ 10.048684] [drm] forcing LVDS-1 connector OFF [ 10.048721] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x20 [ 10.048724] [drm] amdgpu_connector_add() no dp_bridge: connecter_type fo= und: 10 [ 10.048811] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x20 [ 10.048814] [drm] amdgpu_connector_add() no dp_bridge: connecter_type fo= und: 10 [ 10.048877] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x21 [ 10.048880] [drm] amdgpu_connector_add() no dp_bridge: connecter_type fo= und: 10 [ 10.048933] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x15 [ 10.048937] [drm] amdgpu_connector_add() no dp_bridge: connecter_type fo= und: 1 When using Switchable Graphics: [ X.XXXXXXX] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x1e [ X.XXXXXXX] [drm] amdgpu_connector_add() no dp_bridge: connecter_type fo= und: -16345243 Then we panic/deadlock. amdgpu_atombios_get_connector_info_from_object_table() vs radeon_get_atom_connector_info_from_object_table() Perhaps there's a bug in the parsing? This works fine with radeon.ko. --=20 You are receiving this mail because: You are the assignee for the bug.= --14720517920.bcDBFAe.16651 Date: Wed, 24 Aug 2016 15:16:32 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated

Comment= # 1 on bug 97460<= /a> from Shawn Starr 
Adding some debug when not using Switchable Graphics:

[   10.048669] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x1e
[   10.048672] [drm] amdgpu_connector_add() no dp_bridge: connecter_type fo=
und:
7
[   10.048684] [drm] forcing LVDS-1 connector OFF
[   10.048721] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x20
[   10.048724] [drm] amdgpu_connector_add() no dp_bridge: connecter_type fo=
und:
10
[   10.048811] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x20
[   10.048814] [drm] amdgpu_connector_add() no dp_bridge: connecter_type fo=
und:
10
[   10.048877] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x21
[   10.048880] [drm] amdgpu_connector_add() no dp_bridge: connecter_type fo=
und:
10
[   10.048933] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x15
[   10.048937] [drm] amdgpu_connector_add() no dp_bridge: connecter_type fo=
und:
1

When using Switchable Graphics:

[   X.XXXXXXX] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x1e
[   X.XXXXXXX] [drm] amdgpu_connector_add() no dp_bridge: connecter_type fo=
und:
-16345243

Then we panic/deadlock.

amdgpu_atombios_get_connector_info_from_object_table() vs
radeon_get_atom_connector_info_from_object_table()

Perhaps there's a bug in the parsing? This works fine with radeon.ko.

You are receiving this mail because:
  • You are the assignee for the bug.
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