From: Kees Cook <keescook@chromium.org>
To: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Jon Mason <jdmason@kudzu.us>, Dave Jiang <dave.jiang@intel.com>,
Allen Hubbe <allenbh@gmail.com>,
linux-ntb@googlegroups.com, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org
Subject: Re: [PATCH][next] NTB/msi: Use struct_size() helper in devm_kzalloc()
Date: Thu, 20 Jan 2022 15:34:02 -0800 [thread overview]
Message-ID: <202201201533.975AD386E@keescook> (raw)
In-Reply-To: <20220120230247.GA40182@embeddedor>
On Thu, Jan 20, 2022 at 05:02:47PM -0600, Gustavo A. R. Silva wrote:
> Make use of the struct_size() helper instead of an open-coded version,
> in order to avoid any potential type mistakes or integer overflows that,
> in the worst scenario, could lead to heap overflows.
>
> Also, address the following sparse warnings:
> drivers/ntb/msi.c:46:23: warning: using sizeof on a flexible structure
>
> Link: https://github.com/KSPP/linux/issues/174
> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Heh, the variable was even named struct_size. ;)
Reviewed-by: Kees Cook <keescook@chromium.org>
--
Kees Cook
next prev parent reply other threads:[~2022-01-20 23:34 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-20 23:02 [PATCH][next] NTB/msi: Use struct_size() helper in devm_kzalloc() Gustavo A. R. Silva
2022-01-20 23:34 ` Kees Cook [this message]
2022-01-21 16:24 ` Logan Gunthorpe
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