linux-kernel - Re: [PATCH v3] eeprom: at24: fix memory corruption race condition

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Date: Tue, 23 Apr 2024 10:14:16 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Daniel Okazaki <dtokazaki@...gle.com>, Arnd Bergmann <arnd@...db.de>, kernel-team@...roid.com, 
	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] eeprom: at24: fix memory corruption race condition

On Tue, Apr 23, 2024 at 12:09 AM Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
>
> On Mon, Apr 22, 2024 at 05:43:36PM +0000, Daniel Okazaki wrote:
> > If the eeprom is not accessible, an nvmem device will be registered, the
> > read will fail, and the device will be torn down. If another driver
> > accesses the nvmem device after the teardown, it will reference
> > invalid memory.
> >
> > Move the failure point before registering the nvmem device.
> >
> > Signed-off-by: Daniel Okazaki <dtokazaki@...gle.com>
> > Fixes: b20eb4c1f026 ("eeprom: at24: drop unnecessary label")
> > ---
> > Changed sha length to 12 in description
> > ---
>
> Hi,
>
> This is the friendly patch-bot of Greg Kroah-Hartman.  You have sent him
> a patch that has triggered this response.  He used to manually respond
> to these common problems, but in order to save his sanity (he kept
> writing the same thing over and over, yet to different people), I was
> created.  Hopefully you will not take offence and will fix the problem
> in your patch and resubmit it so that it can be accepted into the Linux
> kernel tree.
>
> You are receiving this message because of the following common error(s)
> as indicated below:
>
> - You have marked a patch with a "Fixes:" tag for a commit that is in an
>   older released kernel, yet you do not have a cc: stable line in the
>   signed-off-by area at all, which means that the patch will not be
>   applied to any older kernel releases.  To properly fix this, please
>   follow the documented rules in the
>   Documentation/process/stable-kernel-rules.rst file for how to resolve
>   this.

I fixed it when applying.

Bart

>
> If you wish to discuss this problem further, or you have questions about
> how to resolve this issue, please feel free to respond to this email and
> Greg will reply once he has dug out from the pending patches received
> from other developers.
>
> thanks,
>
> greg k-h's patch email bot