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| author | Marc Zyngier <marc.zyngier@arm.com> | 2016-07-18 16:16:26 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2016-07-18 18:15:16 +0100 |
| commit | c0091073dd775d0446a9f88dda8c9a86b64340b2 (patch) | |
| tree | 702b64e1d6557399aa7c377ee79d5e0aa6fcc1b0 | |
| parent | d97594e6bc1b4aaad3ccae3ef678513b63dd5221 (diff) | |
| download | linux-c0091073dd775d0446a9f88dda8c9a86b64340b2.tar.bz2 | |
KVM: arm64: vgic-its: Fix handling of indirect tables
The current code will fail on valid indirect tables, and happily
use the ones that are pointing out of the guest RAM. Funny what a
small "!" can do for you...
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
| -rw-r--r-- | virt/kvm/arm/vgic/vgic-its.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index f427fa2f7263..d6697c4d81ec 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -702,9 +702,9 @@ static bool vgic_its_check_device_id(struct kvm *kvm, struct vgic_its *its, return false; /* Each 1st level entry is represented by a 64-bit value. */ - if (!kvm_read_guest(kvm, - BASER_ADDRESS(r) + index * sizeof(indirect_ptr), - &indirect_ptr, sizeof(indirect_ptr))) + if (kvm_read_guest(kvm, + BASER_ADDRESS(r) + index * sizeof(indirect_ptr), + &indirect_ptr, sizeof(indirect_ptr))) return false; /* check the valid bit of the first level entry */ |