linux-kernel - [PATCH 1/2] virtio_pci: double free and invalid memory access of device vqs

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Date:	Fri,  2 Jan 2015 14:47:39 -0500
From:	Sasha Levin <sasha.levin@...cle.com>
To:	linux-kernel@...r.kernel.org
Cc:	Sasha Levin <sasha.levin@...cle.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	virtualization@...ts.linux-foundation.org (open list:VIRTIO CORE,
	NET...)
Subject: [PATCH 1/2] virtio_pci: double free and invalid memory access of device vqs

Device VQs were getting freed twice: once in every devices removal functions,
and then again in virtio_pci_legacy_remove().

Signed-off-by: Sasha Levin <sasha.levin@...cle.com>
---
 drivers/virtio/virtio_pci_legacy.c |    1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/virtio/virtio_pci_legacy.c b/drivers/virtio/virtio_pci_legacy.c
index 6c76f0f..913ca23 100644
--- a/drivers/virtio/virtio_pci_legacy.c
+++ b/drivers/virtio/virtio_pci_legacy.c
@@ -298,7 +298,6 @@ void virtio_pci_legacy_remove(struct pci_dev *pci_dev)
 
 	unregister_virtio_device(&vp_dev->vdev);
 
-	vp_del_vqs(&vp_dev->vdev);
 	pci_iounmap(pci_dev, vp_dev->ioaddr);
 	pci_release_regions(pci_dev);
 	pci_disable_device(pci_dev);
-- 
1.7.10.4

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