From: Stefano Garzarella <sgarzare@redhat.com>
To: netdev@vger.kernel.org
Cc: kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
Stefan Hajnoczi <stefanha@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
Jason Wang <jasowang@redhat.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 0/3] vsock/virtio: several fixes in the .probe() and .remove()
Date: Fri, 28 Jun 2019 14:36:56 +0200 [thread overview]
Message-ID: <20190628123659.139576-1-sgarzare@redhat.com> (raw)
During the review of "[PATCH] vsock/virtio: Initialize core virtio vsock
before registering the driver", Stefan pointed out some possible issues
in the .probe() and .remove() callbacks of the virtio-vsock driver.
This series tries to solve these issues:
- Patch 1 adds RCU critical sections to avoid use-after-free of
'the_virtio_vsock' pointer.
- Patch 2 stops workers before to call vdev->config->reset(vdev) to
be sure that no one is accessing the device.
- Patch 3 moves the works flush at the end of the .remove() to avoid
use-after-free of 'vsock' object.
v2:
- Patch 1: use RCU to protect 'the_virtio_vsock' pointer
- Patch 2: no changes
- Patch 3: flush works only at the end of .remove()
- Removed patch 4 because virtqueue_detach_unused_buf() returns all the buffers
allocated.
v1: https://patchwork.kernel.org/cover/10964733/
Stefano Garzarella (3):
vsock/virtio: use RCU to avoid use-after-free on the_virtio_vsock
vsock/virtio: stop workers during the .remove()
vsock/virtio: fix flush of works during the .remove()
net/vmw_vsock/virtio_transport.c | 131 ++++++++++++++++++++++++-------
1 file changed, 102 insertions(+), 29 deletions(-)
--
2.20.1
next reply other threads:[~2019-06-28 12:37 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-28 12:36 Stefano Garzarella [this message]
2019-06-28 12:36 ` [PATCH v2 1/3] vsock/virtio: use RCU to avoid use-after-free on the_virtio_vsock Stefano Garzarella
2019-07-01 14:54 ` Stefan Hajnoczi
2019-07-01 15:10 ` Stefan Hajnoczi
2019-07-03 9:53 ` Jason Wang
2019-07-03 10:41 ` Stefano Garzarella
2019-07-04 3:58 ` Jason Wang
2019-07-04 9:20 ` Stefano Garzarella
2019-07-05 0:18 ` Jason Wang
2019-07-04 10:17 ` Stefan Hajnoczi
2019-06-28 12:36 ` [PATCH v2 2/3] vsock/virtio: stop workers during the .remove() Stefano Garzarella
2019-07-04 4:00 ` Jason Wang
2019-06-28 12:36 ` [PATCH v2 3/3] vsock/virtio: fix flush of works " Stefano Garzarella
2019-07-01 15:08 ` Stefan Hajnoczi
2019-07-01 15:09 ` Stefan Hajnoczi
2019-07-01 15:11 ` [PATCH v2 0/3] vsock/virtio: several fixes in the .probe() and .remove() Stefan Hajnoczi
2019-07-01 17:03 ` Stefano Garzarella
2019-07-03 9:14 ` Stefan Hajnoczi
2019-07-03 10:07 ` Stefano Garzarella
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