linux-kernel - Re: [PATCH v3] KVM: arm64: Add memory length checks and remove inline in do_ffa_mem

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Message-Id: <172595297831.336083.5203096550952682549.b4-ty@kernel.org>
Date: Tue, 10 Sep 2024 08:23:14 +0100
From: Marc Zyngier <maz@...nel.org>
To: Oliver Upton <oliver.upton@...ux.dev>,
	Snehal Koukuntla <snehalreddy@...gle.com>
Cc: James Morse <james.morse@....com>,
	Suzuki K Poulose <suzuki.poulose@....com>,
	Zenghui Yu <yuzenghui@...wei.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Sudeep Holla <sudeep.holla@....com>,
	Sebastian Ene <sebastianene@...gle.com>,
	Vincent Donnefort <vdonnefort@...gle.com>,
	Jean-Philippe Brucker <jean-philippe@...aro.org>,
	linux-arm-kernel@...ts.infradead.org,
	kvmarm@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH v3] KVM: arm64: Add memory length checks and remove inline in do_ffa_mem_xfer

On Mon, 09 Sep 2024 18:01:54 +0000, Snehal Koukuntla wrote:
> When we share memory through FF-A and the description of the buffers
> exceeds the size of the mapped buffer, the fragmentation API is used.
> The fragmentation API allows specifying chunks of descriptors in subsequent
> FF-A fragment calls and no upper limit has been established for this.
> The entire memory region transferred is identified by a handle which can be
> used to reclaim the transferred memory.
> To be able to reclaim the memory, the description of the buffers has to fit
> in the ffa_desc_buf.
> Add a bounds check on the FF-A sharing path to prevent the memory reclaim
> from failing.
> 
> [...]

Applied to next, thanks!

[1/1] KVM: arm64: Add memory length checks and remove inline in do_ffa_mem_xfer
      commit: 39dacbeeee703d29140aca7bc2826d4b1936ecb6

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.