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References: <20210708074642.23599-1-harshvardhan.jha@oracle.com>
In-Reply-To: <20210708074642.23599-1-harshvardhan.jha@oracle.com>
From:   Sumit Saxena <sumit.saxena@broadcom.com>
Date:   Tue, 27 Jul 2021 16:25:35 +0530
Message-ID: <CAL2rwxoDwkrsZNQjdpft==8wVY5nDaNUd03ixtbrbArMSPWbow@mail.gmail.com>
Subject: Re: [PATCH] scsi: megaraid_mm: Fix end of loop tests for list_for_each_entry
To:     Harshvardhan Jha <harshvardhan.jha@oracle.com>
Cc:     Kashyap Desai <kashyap.desai@broadcom.com>,
        Shivasharan Srikanteshwara 
        <shivasharan.srikanteshwara@broadcom.com>,
        "James E.J. Bottomley" <jejb@linux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        "PDL,MEGARAIDLINUX" <megaraidlinux.pdl@broadcom.com>,
        Linux SCSI List <linux-scsi@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Dan Carpenter <dan.carpenter@oracle.com>
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On Thu, Jul 8, 2021 at 1:16 PM Harshvardhan Jha
<harshvardhan.jha@oracle.com> wrote:
>
> The list_for_each_entry() iterator, "adapter" in this code, can never be
> NULL.  If we exit the loop without finding the correct  adapter then
> "adapter" points invalid memory that is an offset from the list head.
> This will eventually lead to memory corruption and presumably a kernel
> crash.
>
> Signed-off-by: Harshvardhan Jha <harshvardhan.jha@oracle.com>
Looks good.
Acked-by: Sumit Saxena <sumit.saxena@broadcom.com>

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