Groups > linux.debian.bugs.dist > #1130772

Bug#962003: Linux kernel 5.6: [drm:i915_gem_gtt_finish_pages [i915]] ERROR Failed to wait for idle; VT'd may hang

From	Diederik de Haas <didi.debian@cknow.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#962003: Linux kernel 5.6: [drm:i915_gem_gtt_finish_pages [i915]] ERROR Failed to wait for idle; VT'd may hang
Date	2022-12-30 13:00 +0100
Message-ID	<FImdj-ejOp-1@gated-at.bofh.it> (permalink)
References	<AcZHj-3Qz-1@gated-at.bofh.it> <FIbUB-edpS-3@gated-at.bofh.it> <AcZHj-3Qz-1@gated-at.bofh.it> <FIbUB-edpS-3@gated-at.bofh.it>
Organization	Connecting Knowledge

Cross-posted to 2 groups.

Show all headers | View raw

[Multipart message — attachments visible in raw view] - view raw

On Friday, 30 December 2022 01:48:53 CET Stefan Pietsch wrote:
> >> Affected is at least linux-image-5.6.0-1-amd64 (5.6.7-1) and
> >> linux-image-5.6.0-2-amd64 (5.6.14-1).> 
> > This also affects 5.5.0-rc5-amd64.
> > 
> > (https://snapshot.debian.org/archive/debian/20200106T211159Z/pool/main/l/l
> > inux/)
> > 
> > The kernel boot option "intel_iommu=igfx_off" prevents the error message.
> 
> This seems to be resolved in newer kernel versions.
> I'm not able to reproduce this with kernel version 5.14.0-4-amd64
> (5.14.16-1).

Great that it is resolved :-)

As many people are affected and the Stable kernel version still seems to 
exhibit the problem, I want to ask a question:
Are you willing to help out to narrow down as much as possible which version 
introduced the error and in which is was fixed? Wrt the latter, does 5.14.12-1 
still show the issue?

Via https://snapshot.debian.org/binary/linux-image-amd64/ you get (easily) get 
all the kernel versions that were released.
If we know a (reasonably) small range of kernel versions in which it surfaced 
and a small range in which it was fixed, then we could make some educated 
guesses as to which commit caused the issue in the first place.

TIA,
  Diederik

Thread

Bug#962003: Linux kernel 5.6: [drm:i915_gem_gtt_finish_pages [i915]] *ERROR* Failed to wait for idle; VT'd may hang Stefan Pietsch <stefan+debian@shellforce.org> - 2022-12-30 02:00 +0100
  Bug#962003: Linux kernel 5.6: [drm:i915_gem_gtt_finish_pages [i915]] *ERROR* Failed to wait for idle; VT'd may hang Diederik de Haas <didi.debian@cknow.org> - 2022-12-30 13:00 +0100
    Bug#962003: Linux kernel 5.6: [drm:i915_gem_gtt_finish_pages [i915]] *ERROR* Failed to wait for idle; VT'd may hang Stefan Pietsch <stefan+debian@shellforce.org> - 2023-01-14 23:50 +0100

csiph-web