linux-kernel - Re: [PATCH] scsi: elx: libefc: Fix second parameter type in state callbacks

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Message-ID: <yq1r0yejgcv.fsf@ca-mkp.ca.oracle.com>
Date:   Mon, 07 Nov 2022 22:05:36 -0500
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Nathan Chancellor <nathan@...nel.org>
Cc:     James Smart <james.smart@...adcom.com>,
        Ram Vegesna <ram.vegesna@...adcom.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, target-devel@...r.kernel.org,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>, Kees Cook <keescook@...omium.org>,
        Sami Tolvanen <samitolvanen@...gle.com>, llvm@...ts.linux.dev,
        linux-kernel@...r.kernel.org, patches@...ts.linux.dev
Subject: Re: [PATCH] scsi: elx: libefc: Fix second parameter type in state
 callbacks


Nathan,

> With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
> indirect call targets are validated against the expected function
> pointer prototype to make sure the call target is valid to help
> mitigate ROP attacks. If they are not identical, there is a failure at
> run time, which manifests as either a kernel panic or thread getting
> killed. A proposed warning in clang aims to catch these at compile
> time, which reveals:

Applied to 6.2/scsi-staging, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering