linux-hardening - Re: [PATCH v2] scsi: advansys: Prefer struct

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Date:   Tue,  5 Oct 2021 00:34:38 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Matthew Wilcox <willy@...radead.org>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Len Baker <len.baker@....com>, Hannes Reinecke <hare@...e.com>
Cc:     "Martin K . Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-hardening@...r.kernel.org, Kees Cook <keescook@...omium.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] scsi: advansys: Prefer struct_size over open coded arithmetic

On Sat, 25 Sep 2021 13:42:05 +0200, Len Baker wrote:

> As noted in the "Deprecated Interfaces, Language Features, Attributes,
> and Conventions" documentation [1], size calculations (especially
> multiplication) should not be performed in memory allocator (or similar)
> function arguments due to the risk of them overflowing. This could lead
> to values wrapping around and a smaller allocation being made than the
> caller was expecting. Using those allocations could lead to linear
> overflows of heap memory and other misbehaviors.
> 
> [...]

Applied to 5.16/scsi-queue, thanks!

[1/1] scsi: advansys: Prefer struct_size over open coded arithmetic
      https://git.kernel.org/mkp/scsi/c/568778f5572a

-- 
Martin K. Petersen	Oracle Linux Engineering