Re: [PATCH 2/2] ACPI: pfr_update: keep the state until the last file is closed

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From: Chad Aldreda

Date: Mon Nov 09 2026 - 03:23:50 EST

Shuangpeng Bai reported this bug in June, with a reproducer, and I missed
the report when I sent this patch. It is the same use-after-free after an
unbind with the file still open.

Reported-by: Shuangpeng Bai <shuangpeng.kernel@xxxxxxxxx>
Closes: https://lore.kernel.org/all/178144969601.60470.7781990940097306115@xxxxxxxxx/

Chad