linux-kernel - Re: [PATCH v4 6/6] bus: mhi: core: Add range checks for BHI and BHIe

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Message-ID: <860e3d9d-91dc-7fd6-68f6-e8f099cc4555@codeaurora.org>
Date:   Thu, 6 May 2021 19:33:19 -0700
From:   Hemant Kumar <hemantk@...eaurora.org>
To:     Bhaumik Bhatt <bbhatt@...eaurora.org>,
        manivannan.sadhasivam@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, jhugo@...eaurora.org,
        linux-kernel@...r.kernel.org, loic.poulain@...aro.org,
        linux-wireless@...r.kernel.org, kvalo@...eaurora.org,
        ath11k@...ts.infradead.org
Subject: Re: [PATCH v4 6/6] bus: mhi: core: Add range checks for BHI and BHIe



On 5/6/21 12:51 PM, Bhaumik Bhatt wrote:
> When obtaining the BHI or BHIe offsets during the power up
> preparation phase, range checks are missing. These can help
> controller drivers avoid accessing any address outside of the
> MMIO region. Ensure that mhi_cntrl->reg_len is set before MHI
> registration as it is a required field and range checks will
> fail without it.
> 
> Signed-off-by: Bhaumik Bhatt <bbhatt@...eaurora.org>
> Reviewed-by: Jeffrey Hugo <quic_jhugo@...cinc.com>

Reviewed-by: Hemant Kumar <hemantk@...eaurora.org>

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