linux-kernel - Re: [PATCH] scsi: csiostor: Uninitialized data in csio_ln_vnp_read

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Message-ID: <yq1v922ql4g.fsf@ca-mkp.ca.oracle.com>
Date:   Tue, 12 Oct 2021 12:11:04 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Naresh Kumar Inna <naresh@...lsio.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        James Bottomley <JBottomley@...allels.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] scsi: csiostor: Uninitialized data in
 csio_ln_vnp_read_cbfn()


Dan,

> This variable is just a temporary variable, used to do an endian
> conversion.  The problem is that the last byte is not initialized.
> After the conversion is completely done, the last byte is discarded so
> it doesn't cause a problem.  But static checkers and the KMSan runtime
> checker can detect the uninitialized read and will complain about it.

Applied to 5.16/scsi-staging, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering