linux-kernel - [PATCH v2 5/7] vfio/platform: Disable virqfds on cleanup

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Message-ID: <20240308230557.805580-6-alex.williamson@redhat.com>
Date: Fri,  8 Mar 2024 16:05:26 -0700
From: Alex Williamson <alex.williamson@...hat.com>
To: alex.williamson@...hat.com
Cc: kvm@...r.kernel.org,
	eric.auger@...hat.com,
	clg@...hat.com,
	reinette.chatre@...el.com,
	linux-kernel@...r.kernel.org,
	kevin.tian@...el.com,
	stable@...r.kernel.org
Subject: [PATCH v2 5/7] vfio/platform: Disable virqfds on cleanup

irqfds for mask and unmask that are not specifically disabled by the
user are leaked.  Remove any irqfds during cleanup

Cc: Eric Auger <eric.auger@...hat.com>
Cc: stable@...r.kernel.org
Fixes: a7fa7c77cf15 ("vfio/platform: implement IRQ masking/unmasking via an eventfd")
Signed-off-by: Alex Williamson <alex.williamson@...hat.com>
---
 drivers/vfio/platform/vfio_platform_irq.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/vfio/platform/vfio_platform_irq.c b/drivers/vfio/platform/vfio_platform_irq.c
index 61a1bfb68ac7..e5dcada9e86c 100644
--- a/drivers/vfio/platform/vfio_platform_irq.c
+++ b/drivers/vfio/platform/vfio_platform_irq.c
@@ -321,8 +321,11 @@ void vfio_platform_irq_cleanup(struct vfio_platform_device *vdev)
 {
 	int i;
 
-	for (i = 0; i < vdev->num_irqs; i++)
+	for (i = 0; i < vdev->num_irqs; i++) {
+		vfio_virqfd_disable(&vdev->irqs[i].mask);
+		vfio_virqfd_disable(&vdev->irqs[i].unmask);
 		vfio_set_trigger(vdev, i, -1, NULL);
+	}
 
 	vdev->num_irqs = 0;
 	kfree(vdev->irqs);
-- 
2.44.0