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arm/arm64: KVM: Take mmap_sem in stage2_unmap_vm
authorMarc Zyngier <marc.zyngier@arm.com>
Thu, 16 Mar 2017 18:20:49 +0000 (18:20 +0000)
committerMarc Zyngier <marc.zyngier@arm.com>
Mon, 20 Mar 2017 10:48:32 +0000 (10:48 +0000)
commit90f6e150e44a0dc3883110eeb3ab35d1be42b6bb
tree50939fe5740001b0f66c5682d66647a701047126tree | snapshot (tar.gz zip)
parent955a3fc6d2a1c11d6d00bce4f3816100ce0530cfcommit | diff
arm/arm64: KVM: Take mmap_sem in stage2_unmap_vm

We don't hold the mmap_sem while searching for the VMAs when
we try to unmap each memslot for a VM. Fix this properly to
avoid unexpected results.

Fixes: commit 957db105c997 ("arm/arm64: KVM: Introduce stage2_unmap_vm")
Cc: stable@vger.kernel.org # v3.19+
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
arch/arm/kvm/mmu.c diff | blob | blame | history