linux-kernel - Re: [PATCH v2 00/12] scsi: mpt3sas: Use flexible arrays and do a few cleanups

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Message-ID: <202310101748.5E39C3A@keescook>
Date:   Tue, 10 Oct 2023 17:49:38 -0700
From:   Kees Cook <keescook@...omium.org>
To:     "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     James Seo <james@...iv.tech>,
        Sathya Prakash <sathya.prakash@...adcom.com>,
        Sreekanth Reddy <sreekanth.reddy@...adcom.com>,
        Suganath Prabu Subramani 
        <suganath-prabu.subramani@...adcom.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        MPT-FusionLinux.pdl@...adcom.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 00/12] scsi: mpt3sas: Use flexible arrays and do a few
 cleanups

On Thu, Aug 24, 2023 at 11:00:57PM -0400, Martin K. Petersen wrote:
> 
> > Commit df8fc4e934c1 ("kbuild: Enable -fstrict-flex-arrays=3") has
> > resulted in the only arrays that UBSAN_BOUNDS considers unbounded
> > being trailing arrays declared with [] as the last member of a struct.
> > Unbounded trailing arrays declared with [1] are common in mpt3sas,
> > which is causing spurious warnings to appear in some situations, e.g.
> > when more than one physical disk is connected:
> 
> Broadcom: Please review/test. Thanks!

Another thread ping. Is anyone at broadcom around? I'd really like to
see this series (or some form of it) land to avoid all these runtime
warnings...

-- 
Kees Cook