On 2026-04-02 08:12, Greg KH wrote:
On Sat, Mar 28, 2026 at 11:52:48AM +0100, Thorsten Leemhuis wrote:
Matt, thx for the report.
On 3/28/26 11:30, Matt Fagnani wrote:
I could try to bisect. The commit
e493c135980f90c20308d1a98f2e0d1223951e94 drm: Fix use-after-free on
framebuffers and property blobs when calling drm_dev_unplug was included
in 6.19.10 and changed drm_mode_config_cleanup https://git.kernel.org/
pub/scm/linux/kernel/git/stable/linux.git/commit/?
h=linux-6.19.y&id=e493c135980f90c20308d1a98f2e0d1223951e94
Did a quick search. Turns out this is mainline commit 6bee098b914176
("drm: Fix use-after-free on framebuffers and property blobs when
calling drm_dev_unplug") -- and when searching for that (FWIW, this is
not widely known, but that is really helpful in case like this, as the
mainline commit id is way more relevant) is turns out that is in the
process of getting reverted:
See https://lore.kernel.org/all/[email protected]/
or 45ebe43ea00d6b ("Revert "drm: Fix use-after-free on framebuffers and
property blobs when calling drm_dev_unplug"") [next-20260327
(pending-fixes)].
Sasha and Greg: you might want to make sure to pick this up.
When it shows up in a Linus-released kernel, can someone remind us?
thanks,
greg k-h
7.0-rc7 https://lwn.net/Articles/1066405/ had the patch Revert "drm: Fix
use-after-free on framebuffers and property blobs when calling
drm_dev_unplug"
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v7.0-rc7&id=45ebe43ea00d6b9f5b3e0db9c35b8ca2a96b7e70 Thanks.
Matt
