lkml.org 
[lkml]   [2021]   [Jul]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 5.10 154/167] Revert "drm/i915: Propagate errors on awaiting already signaled fences"
Hi!

According to changelog, this introduces security hole.

> From: Jason Ekstrand <jason@jlekstrand.net>
>
> commit 3761baae908a7b5012be08d70fa553cc2eb82305 upstream.
>
> This reverts commit 9e31c1fe45d555a948ff66f1f0e3fe1f83ca63f7. Ever
> since that commit, we've been having issues where a hang in one
> client

Hmm. Sounds like problem I'm seeing in mainline. So... good to know.

> For backporters: Please note that you _must_ have a backport of
> https://lore.kernel.org/dri-devel/20210602164149.391653-2-jason@jlekstrand.net/
> for otherwise backporting just this patch opens up a security bug.

AFAICT we don't have that c9d9fdbc108af8915d3f497bbdf3898bf8f321b8
drm/i915: Revert "drm/i915/gem: Asynchronous cmdparser" in 5.10 tree.

Hmm, and it needs follow up fix:
6e0b6528d783b2b87bd9e1bea97cf4dac87540d7 drm/i915: Correct the docs
for intel_engine_cmd_parser.

(Someone please double check this).

Best regards,
Pavel
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2021-07-27 23:36    [W:0.537 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site