From: Benjamin Berg <benjamin@sipsolutions.net>
To: linux-um@lists.infradead.org
Cc: Benjamin Berg <benjamin.berg@intel.com>
Subject: [PATCH] um: virtio-pci: free the IRQ message buffers
Date: Tue, 5 May 2026 14:43:18 +0200 [thread overview]
Message-ID: <20260505124317.2330700-2-benjamin@sipsolutions.net> (raw)
From: Benjamin Berg <benjamin.berg@intel.com>
These buffers are allocated when initializing the virtual queues, but
were not freed again. Wrap all of the del_vqs calls to detach and free
the unused buffers before deleting the IRQ VQ.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
---
arch/um/drivers/virtio_pcidev.c | 19 +++++++++++++++----
1 file changed, 15 insertions(+), 4 deletions(-)
diff --git a/arch/um/drivers/virtio_pcidev.c b/arch/um/drivers/virtio_pcidev.c
index 2bf5a645db45..53cffd373890 100644
--- a/arch/um/drivers/virtio_pcidev.c
+++ b/arch/um/drivers/virtio_pcidev.c
@@ -490,13 +490,24 @@ static int virtio_pcidev_init_vqs(struct virtio_pcidev_device *dev)
return 0;
}
+static void virtio_pcidev_del_vqs(struct virtio_device *vdev,
+ struct virtio_pcidev_device *dev)
+{
+ void *msg;
+
+ while ((msg = virtqueue_detach_unused_buf(dev->irq_vq)))
+ kfree(msg);
+
+ vdev->config->del_vqs(vdev);
+}
+
static void __virtio_pcidev_virtio_platform_remove(struct virtio_device *vdev,
struct virtio_pcidev_device *dev)
{
um_pci_platform_device_unregister(&dev->pdev);
virtio_reset_device(vdev);
- vdev->config->del_vqs(vdev);
+ virtio_pcidev_del_vqs(vdev, dev);
kfree(dev);
}
@@ -526,7 +537,7 @@ static int virtio_pcidev_virtio_platform_probe(struct virtio_device *vdev,
um_pci_platform_device_unregister(&dev->pdev);
err_reset:
virtio_reset_device(vdev);
- vdev->config->del_vqs(vdev);
+ virtio_pcidev_del_vqs(vdev, dev);
err_free:
kfree(dev);
return err;
@@ -569,7 +580,7 @@ static int virtio_pcidev_virtio_probe(struct virtio_device *vdev)
err_reset:
virtio_reset_device(vdev);
- vdev->config->del_vqs(vdev);
+ virtio_pcidev_del_vqs(vdev, dev);
err_free:
kfree(dev);
return err;
@@ -591,9 +602,9 @@ static void virtio_pcidev_virtio_remove(struct virtio_device *vdev)
/* Stop all virtqueues */
virtio_reset_device(vdev);
+ virtio_pcidev_del_vqs(vdev, dev);
dev->cmd_vq = NULL;
dev->irq_vq = NULL;
- vdev->config->del_vqs(vdev);
kfree(dev);
}
--
2.54.0
reply other threads:[~2026-05-05 12:44 UTC|newest]
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