linux-kernel - Re: [PATCH -next v2] i3c: master: svc: drop free_irq of devm_request

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Message-ID: <20210607082255.5ab761b9@xps13>
Date:   Mon, 7 Jun 2021 08:22:55 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Yang Yingliang <yangyingliang@...wei.com>
Cc:     <linux-kernel@...r.kernel.org>, <linux-i3c@...ts.infradead.org>,
        <alexandre.belloni@...tlin.com>
Subject: Re: [PATCH -next v2] i3c: master: svc: drop free_irq of
 devm_request_irq allocated irq

Hello,

Yang Yingliang <yangyingliang@...wei.com> wrote on Wed, 2 Jun 2021
16:49:35 +0800:

> irq allocated with devm_request_irq() will be freed in devm_irq_release(),
> using free_irq() in ->remove() will causes a dangling pointer, and a
> subsequent double free. So remove the free_irq() in svc_i3c_master_remove().
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>

Reviewed-by: Miquel Raynal <miquel.raynal@...tlin.com>

Thanks,
Miquèl