linux-kernel - Re: [PATCH 1/1] media: si470x-i2c: Move free() past last use of 'radio'

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Message-ID: <20200203145831.GA3238182@kroah.com>
Date:   Mon, 3 Feb 2020 14:58:31 +0000
From:   Greg KH <greg@...ah.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     stable@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] media: si470x-i2c: Move free() past last use of
 'radio'

On Mon, Feb 03, 2020 at 02:32:45PM +0000, Greg KH wrote:
> On Mon, Feb 03, 2020 at 01:21:30PM +0000, Lee Jones wrote:
> > A pointer to 'struct si470x_device' is currently used after free:
> > 
> >   drivers/media/radio/si470x/radio-si470x-i2c.c:462:25-30: ERROR: reference
> >     preceded by free on line 460
> > 
> > Shift the call to free() down past its final use.
> > 
> > NB: Not sending to Mainline, since the problem does not exist there.
> 
> It doesn't exist there because of a bad merge?  What commit caused the
> problem?

Ah, found it, it was 2df200ab234a ("media: si470x-i2c: add missed
operations in remove")