linux-kernel - Re: [PATCH] scsi: lpfc: prevent potential null pointer dereference

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Message-ID: <yq1zidsl92c.fsf@oracle.com>
Date:   Wed, 31 May 2017 22:45:47 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Cc:     James Smart <james.smart@...adcom.com>,
        Dick Kennedy <dick.kennedy@...adcom.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: lpfc: prevent potential null pointer dereference


Gustavo A.,

> Null check at line 966: if (ndlp) {, implies that ndlp might be NULL.
> Functions lpfc_nlp_set_state() and lpfc_issue_els_prli() dereference
> pointer ndlp. Include these function calls inside the IF block that
> tests pointer ndlp.

Applied to 4.12/scsi-fixes. Thank you!

-- 
Martin K. Petersen	Oracle Linux Engineering