This is a note to let you know that I've just added the patch titled
KVM: arm64: vgic-its: Test for valid IRQ in its_sync_lpi_pending_table()
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kvm-arm64-vgic-its-test-for-valid-irq-in-its_sync_lpi_pending_table.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8d3a7dfb801d157ac423261d7cd62c33e95375f8 Mon Sep 17 00:00:00 2001
From: Oliver Upton <oliver.upton@xxxxxxxxx>
Date: Wed, 21 Feb 2024 09:27:31 +0000
Subject: KVM: arm64: vgic-its: Test for valid IRQ in its_sync_lpi_pending_table()
From: Oliver Upton <oliver.upton@xxxxxxxxx>
commit 8d3a7dfb801d157ac423261d7cd62c33e95375f8 upstream.
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@xxxxxxxxxxxxxxx
Fixes: 33d3bc9556a7 ("KVM: arm64: vgic-its: Read initial LPI pending table")
Signed-off-by: Oliver Upton <oliver.upton@xxxxxxxxx>
Link: https://lore.kernel.org/r/20240221092732.4126848-2-oliver.upton@xxxxxxxxx
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
virt/kvm/arm/vgic/vgic-its.c | 3 +++
1 file changed, 3 insertions(+)
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -469,6 +469,9 @@ static int its_sync_lpi_pending_table(st
}
irq = vgic_get_irq(vcpu->kvm, NULL, intids[i]);
+ if (!irq)
+ continue;
+
spin_lock_irqsave(&irq->irq_lock, flags);
irq->pending_latch = pendmask & (1U << bit_nr);
vgic_queue_irq_unlock(vcpu->kvm, irq, flags);
Patches currently in stable-queue which might be from oliver.upton@xxxxxxxxx are
queue-4.19/kvm-arm64-vgic-its-test-for-valid-irq-in-movall-handler.patch
queue-4.19/kvm-arm64-vgic-its-test-for-valid-irq-in-its_sync_lpi_pending_table.patch
