linux-kernel - Re: [PATCH] scsi: ufs: ufshcd: fix potential NULL pointer dereference in ufshcd_config

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Message-ID: <yq1fu97klmc.fsf@oracle.com>
Date:   Tue, 21 Nov 2017 23:01:15 -0500
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Cc:     Vinayak Holikatti <vinholikatti@...il.com>,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi: ufs: ufshcd: fix potential NULL pointer dereference in ufshcd_config_vreg


Gustavo A.,

> _vreg_ is being dereferenced before it is null checked, hence there is a
> potential null pointer dereference.
>
> Fix this by moving the pointer dereference after _vreg_ has been null
> checked.

Applied to 4.15/scsi-fixes, thank you!

-- 
Martin K. Petersen	Oracle Linux Engineering