linux-kernel - Re: [PATCH] scsi: mpt3sas: fix NULL pointer access in mpt3sas_transport_port

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Message-ID: <CAFdVvOzRhRggKLtEj5cooi5RUfrAdpRa7ANecPst-CC5k4wj9Q@mail.gmail.com>
Date:   Tue, 7 Mar 2023 09:51:05 -0700
From:   Sathya Prakash Veerichetty <sathya.prakash@...adcom.com>
To:     "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     Ranjan Kumar <ranjan.kumar@...adcom.com>,
        Sreekanth Reddy <sreekanth.reddy@...adcom.com>,
        Wenchao Hao <haowenchao2@...wei.com>,
        Suganath Prabu Subramani 
        <suganath-prabu.subramani@...adcom.com>,
        "James E . J . Bottomley" <jejb@...ux.ibm.com>,
        MPT-FusionLinux.pdl@...adcom.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org, linfeilong@...wei.com
Subject: Re: [PATCH] scsi: mpt3sas: fix NULL pointer access in mpt3sas_transport_port_add()

On Mon, Mar 6, 2023 at 6:42 PM Martin K. Petersen
<martin.petersen@...cle.com> wrote:
>
>
> Ranjan/Sreekanth,
>
> > port is allocated by sas_port_alloc_num() and rphy is allocated by
> > sas_end_device_alloc() or sas_expander_alloc() which may return NULL,
> > so we need to check the rphy to avoid possible NULL pointer access.
> >
> > If sas_rphy_add() called with failure rphy is set to NULL, we would
> > access the rphy in next lines which would also result NULL pointer
> > access.
> >
> > Fix commit 78316e9dfc24 ("scsi: mpt3sas: Fix possible resource leaks
> > in mpt3sas_transport_port_add()")
>
> Please review!
Looks good to me, please commit it for the 6.3 scsi_fixes

>
> --
> Martin K. Petersen      Oracle Linux Engineering

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