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| author | Oliver Upton <oliver.upton@linux.dev> | 2024-02-21 12:27:31 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2024-02-21 13:06:41 +0300 |
| commit | 8d3a7dfb801d157ac423261d7cd62c33e95375f8 (patch) | |
| tree | 5eec37f6d24d34b18fdccf9dee0a3b441137b619 /arch | |
| parent | c60d847be7b8e69e419e02a2b3d19c2842a3c35d (diff) | |
| download | linux-8d3a7dfb801d157ac423261d7cd62c33e95375f8.tar.xz | |
KVM: arm64: vgic-its: Test for valid IRQ in its_sync_lpi_pending_table()
vgic_get_irq() may not return a valid descriptor if there is no ITS that
holds a valid translation for the specified INTID. If that is the case,
it is safe to silently ignore it and continue processing the LPI pending
table.
Cc: stable@vger.kernel.org
Fixes: 33d3bc9556a7 ("KVM: arm64: vgic-its: Read initial LPI pending table")
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20240221092732.4126848-2-oliver.upton@linux.dev
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/kvm/vgic/vgic-its.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/kvm/vgic/vgic-its.c b/arch/arm64/kvm/vgic/vgic-its.c index e2764d0ffa9f..082448de27ed 100644 --- a/arch/arm64/kvm/vgic/vgic-its.c +++ b/arch/arm64/kvm/vgic/vgic-its.c @@ -468,6 +468,9 @@ static int its_sync_lpi_pending_table(struct kvm_vcpu *vcpu) } irq = vgic_get_irq(vcpu->kvm, NULL, intids[i]); + if (!irq) + continue; + raw_spin_lock_irqsave(&irq->irq_lock, flags); irq->pending_latch = pendmask & (1U << bit_nr); vgic_queue_irq_unlock(vcpu->kvm, irq, flags); |