linux-hardening - Re: [PATCH] PCI: hv: Annotate struct hv_dr_state with __counted

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Date: Sun, 15 Oct 2023 04:42:18 +0900
From: Krzysztof Wilczyński <kw@...ux.com>
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>,
	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

Hello,

> 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

Applied to controller/hyperv, thank you!

[1/1] PCI: hv: Annotate struct hv_dr_state with __counted_by
      https://git.kernel.org/pci/pci/c/45538f68b052

	Krzysztof