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Message-ID: <ZQ3gFXgoccQ7BE6/@liuwe-devbox-debian-v2>
Date: Fri, 22 Sep 2023 18:42:29 +0000
From: Wei Liu <wei.liu@...nel.org>
To: Kees Cook <keescook@...omium.org>
Cc: "K. Y. Srinivasan" <kys@...rosoft.com>,
Haiyang Zhang <haiyangz@...rosoft.com>,
Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
Lorenzo Pieralisi <lpieralisi@...nel.org>,
Krzysztof Wilczyński <kw@...ux.com>,
Rob Herring <robh@...nel.org>,
Bjorn Helgaas <bhelgaas@...gle.com>,
linux-hyperv@...r.kernel.org, linux-pci@...r.kernel.org,
Nathan Chancellor <nathan@...nel.org>,
Nick Desaulniers <ndesaulniers@...gle.com>,
Tom Rix <trix@...hat.com>, linux-kernel@...r.kernel.org,
llvm@...ts.linux.dev, linux-hardening@...r.kernel.org
Subject: Re: [PATCH] PCI: hv: Annotate struct hv_dr_state with __counted_by
On Fri, Sep 22, 2023 at 10:52:57AM -0700, Kees Cook wrote:
> Prepare for the coming implementation by GCC and Clang of the __counted_by
> attribute. Flexible array members annotated with __counted_by can have
> their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
> (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
> functions).
>
> As found with Coccinelle[1], add __counted_by for struct hv_dr_state.
>
> [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
>
> Cc: "K. Y. Srinivasan" <kys@...rosoft.com>
> Cc: Haiyang Zhang <haiyangz@...rosoft.com>
> Cc: Wei Liu <wei.liu@...nel.org>
> Cc: Dexuan Cui <decui@...rosoft.com>
> Cc: Lorenzo Pieralisi <lpieralisi@...nel.org>
> Cc: "Krzysztof Wilczyński" <kw@...ux.com>
> Cc: Rob Herring <robh@...nel.org>
> Cc: Bjorn Helgaas <bhelgaas@...gle.com>
> Cc: linux-hyperv@...r.kernel.org
> Cc: linux-pci@...r.kernel.org
> Signed-off-by: Kees Cook <keescook@...omium.org>
Acked-by: Wei Liu <wei.liu@...nel.org>
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