Claude review: Revert "drm: Fix use-after-free on framebuffers and property blobs when calling drm_dev_unplug"

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Overall Series Review

Subject: Revert "drm: Fix use-after-free on framebuffers and property blobs when calling drm_dev_unplug"
Author: Thorsten Leemhuis <linux@leemhuis.info>
Patches: 2
Reviewed: 2026-04-13T18:38:29.230621

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This is a pair of stable-kernel backports of the same upstream revert (commit `45ebe43ea00d`), targeting **6.6.y** and **6.1.y** respectively. Both patches revert commit `6bee098b9141` ("drm: Fix use-after-free on framebuffers and property blobs when calling drm_dev_unplug"), which was causing warning backtraces reported by Guenter Roeck.

The revert is well-justified with detailed review from Simona Vetter explaining why the original fix was wrong at the DRM core level (the protection should be in the xe driver, not in core DRM), and it carries appropriate tags: Reported-by, Tested-by, Acked-by from Simona, and a Fixes tag.

Both patches are straightforward mechanical reverts adapted for their respective stable branches. The changes look correct. The upstream revert has already landed on drm-next — the current tree at `drm_file.c:252` and `drm_mode_config.c:591-597` already reflects the reverted state.

**Verdict: Both patches look correct and ready for stable.**

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