linux-kernel - Re: [PATCH v1] mfd: core: Fix double-free in mfd_remove_devices

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Date:   Fri, 21 Aug 2020 15:46:53 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] mfd: core: Fix double-free in mfd_remove_devices_fn()

On Tue, 18 Aug 2020, Dmitry Osipenko wrote:

> The pdev.mfd_cell is released by platform_device_release(), which is
> invoked by platform_device_unregister(). Hence mfd_remove_devices_fn()
> shouldn't release the cell variable. The double-free bug is reported KASAN
> during of MFD driver module removal.
> 
> Fixes: 466a62d7642f ("mfd: core: Make a best effort attempt to match devices with the correct of_nodes")
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  drivers/mfd/mfd-core.c | 2 --
>  1 file changed, 2 deletions(-)

Applied, thanks.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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