linux-kernel - Re: PROBLEM: i915 leaks DP connector with static kernel

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Message-ID: <f1ee2aa65d010a891c00691889df4797ecccb872@intel.com>
Date: Tue, 09 Dec 2025 15:33:33 +0200
From: Jani Nikula <jani.nikula@...ux.intel.com>
To: Norbert Lange <nolange79@...il.com>, Joonas Lahtinen
 <joonas.lahtinen@...ux.intel.com>, Rodrigo Vivi <rodrigo.vivi@...el.com>,
 Tvrtko Ursulin <tursulin@...ulin.net>, David Airlie <airlied@...il.com>,
 Simona Vetter <simona@...ll.ch>, "intel-gfx@...ts.freedesktop.org"
 <intel-gfx@...ts.freedesktop.org>, "dri-devel@...ts.freedesktop.org"
 <dri-devel@...ts.freedesktop.org>, "linux-kernel@...r.kernel.org"
 <linux-kernel@...r.kernel.org>
Subject: Re: PROBLEM: i915 leaks DP connector with static kernel

On Tue, 09 Dec 2025, Norbert Lange <nolange79@...il.com> wrote:
> Hello, I am building upstream 6.18 as static kernel, and booting a
> initramfs with the needed firmware.
>
> The relevant files are attached, BUG occurs as soon as the i915 module
> is initialized,
> the attached Monitor just stays blank.
> Errors start with:
>
> [    0.320330] i915 0000:00:02.0: [drm] Found broxton (device ID 5a85)
> integrated display version 9.00 stepping E0
> [    0.326984] i915 0000:00:02.0: [drm] CI tainted: 0x9 by
> intel_gt_init (drivers/gpu/drm/i915/gt/intel_gt.c:766)
> [    0.799141] Freeing initrd memory: 28320K
> [    0.799636] i915 0000:00:02.0: [drm] Finished loading DMC firmware
> i915/bxt_dmc_ver1_07.bin (v1.7)
> [    0.799782] ------------[ cut here ]------------
> [    0.799788] WARNING: CPU: 2 PID: 1 at
> drivers/gpu/drm/drm_mode_config.c:537 drm_mode_config_cleanup
> (drivers/gpu/drm/drm_mode_config.c:537 (discriminator 1))
> [    0.799806] CPU: 2 UID: 0 PID: 1 Comm: swapper/0 Tainted: G
> W           6.18.0-static #1 PREEMPT(none)
> [    0.799815] Tainted: [W]=WARN
> [    0.799819] Hardware name: TQ-Group TQMxE39M/cgb-800--.00, BIOS
> 5.12.30.28.22 09/30/2019
> [    0.799823] RIP: 0010:drm_mode_config_cleanup
> (drivers/gpu/drm/drm_mode_config.c:537 (discriminator 1))
> [    0.799832] Code: 00 eb e8 48 89 ef e8 16 c4 fe ff 48 8d bb 70 02
> 00 00 e8 ca 14 b5 ff 48 8b 93 58 02 00 00 48 8d 83 58 02 00 00 48 39
> c2 74 34 <0f> 0b 48 89 ee 48 89 df e8 7a ac fe ff 48 89 ef e8 42 c4 fe
> ff 48

The problem occurs earlier but there are no logs for that. Please file a
bug as described at [1].

BR,
Jani.


[1] https://drm.pages.freedesktop.org/intel-docs/how-to-file-i915-bugs.html


-- 
Jani Nikula, Intel