From: Marc Zyngier <maz@kernel.org>
To: Alexandru Elisei <alexandru.elisei@arm.com>,
Quentin Perret <qperret@google.com>,
Will Deacon <will@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
linux-kernel@vger.kernel.org, James Morse <james.morse@arm.com>,
kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org,
Steven Price <steven.price@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: kernel-team@android.com
Subject: Re: [PATCH] KVM: arm64: Release mmap_lock when using VM_SHARED with MTE
Date: Tue, 5 Oct 2021 13:23:28 +0100 [thread overview]
Message-ID: <163343660135.3849383.15321540060917928025.b4-ty@kernel.org> (raw)
In-Reply-To: <20211005122031.809857-1-qperret@google.com>
On Tue, 5 Oct 2021 13:20:31 +0100, Quentin Perret wrote:
> VM_SHARED mappings are currently forbidden in a memslot with MTE to
> prevent two VMs racing to sanitise the same page. However, this check
> is performed while holding current->mm's mmap_lock, but fails to release
> it. Fix this by releasing the lock when needed.
Applied to fixes, thanks!
[1/1] KVM: arm64: Release mmap_lock when using VM_SHARED with MTE
commit: 6e6a8ef088e1222cb1250942f51ad9c1ab219ab2
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
prev parent reply other threads:[~2021-10-05 12:23 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-05 12:20 Quentin Perret
2021-10-05 12:23 ` Marc Zyngier [this message]
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