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Date: Thu, 30 Sep 2021 11:00:49 -0700 From: Kees Cook <keescook@...omium.org> To: "Gustavo A. R. Silva" <gustavoars@...nel.org> Cc: Vinod Koul <vkoul@...nel.org>, Maxime Coquelin <mcoquelin.stm32@...il.com>, Alexandre Torgue <alexandre.torgue@...s.st.com>, dmaengine@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org Subject: Re: [PATCH][next] dmaengine: stm32-mdma: Use struct_size() helper in devm_kzalloc() On Wed, Sep 29, 2021 at 05:29:22PM -0500, 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 worse scenario, could lead to heap overflows. > > Link: https://github.com/KSPP/linux/issues/160 > Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org> Looks right to me. Reviewed-by: Kees Cook <keescook@...omium.org> -- Kees Cook
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