linux-kernel - Re: [PATCH] bus: fsl-mc: fix use-after-free in driver_override

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Message-ID: <CALbr=LZvZJn=Qoyfsr=m-_eCJYwRafmdXV+TAUQSib4H0j27rA@mail.gmail.com>
Date: Tue, 16 Dec 2025 15:31:43 +0800
From: Gui-Dong Han <hanguidong02@...il.com>
To: ioana.ciornei@....com
Cc: linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org, 
	baijiaju1990@...il.com, stable@...r.kernel.org
Subject: Re: [PATCH] bus: fsl-mc: fix use-after-free in driver_override_show()

Hi Ioana,

This is a gentle ping regarding the patch above.

I understand you are likely very busy, but I wanted to check if this
might have been missed.

For additional context, I have audited the kernel subsystems that
implement the driver_override attribute. Out of the 11 buses that use
this feature, 10 already hold the device lock during the show
operation to prevent the use-after-free race.

It appears that fsl-mc is currently the only remaining subsystem that
does not have this protection. It would be great to align it with the
rest of the kernel to close this gap.

Please let me know if there are any concerns or if any changes are needed.

Thanks,
Gui-Dong Han