5.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Oliver Upton <redacted>

commit 85a71ee9a0700f6c18862ef3b0011ed9dad99aca upstream.

It is possible that an LPI mapped in a different ITS gets unmapped while
handling the MOVALL command. If that is the case, there is no state that
can be migrated to the destination. Silently ignore it and continue
migrating other LPIs.

Cc: stable@vger.kernel.org
Fixes: ff9c114394aa ("KVM: arm/arm64: GICv4: Handle MOVALL applied to a vPE")
Signed-off-by: Oliver Upton <redacted>
Link: https://lore.kernel.org/r/20240221092732.4126848-3-oliver.upton@linux.dev (local)
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/arm64/kvm/vgic/vgic-its.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/arm64/kvm/vgic/vgic-its.c
+++ b/arch/arm64/kvm/vgic/vgic-its.c

@@ -1374,6 +1374,8 @@ static int vgic_its_cmd_handle_movall(st
 
 	for (i = 0; i < irq_count; i++) {
 		irq = vgic_get_irq(kvm, NULL, intids[i]);
+		if (!irq)
+			continue;
 
 		update_affinity(irq, vcpu2);