linux-kernel - Re: [GIT PULL 7/7] stm class: Prevent division by zero

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Message-ID: <20190221144231.GC9283@kroah.com>
Date:   Thu, 21 Feb 2019 15:42:31 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc:     Mathieu Poirier <mathieu.poirier@...aro.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [GIT PULL 7/7] stm class: Prevent division by zero

On Thu, Feb 21, 2019 at 03:49:59PM +0200, Alexander Shishkin wrote:
> Using STP_POLICY_ID_SET ioctl command with dummy_stm device, or any STM
> device that supplies zero mmio channel size, will trigger a division by
> zero bug in the kernel.
> 
> Prevent this by disallowing channel widths other than 1 for such devices.
> 
> Signed-off-by: Alexander Shishkin <alexander.shishkin@...ux.intel.com>

Fixes: tag?

stable?