diff options
| author | Jiyong Park <jiyong@google.com> | 2022-03-11 11:00:16 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-23 09:13:27 +0100 |
| commit | d9fe590970c463163098d7ecca902690b2ad9467 (patch) | |
| tree | 5379149f4612d28fd94e430c884688faebfa4863 /include/net | |
| parent | ac7dd60946c06b993ccee0147e9353b3085d42bf (diff) | |
vsock: each transport cycles only on its own sockets
[ Upstream commit 8e6ed963763fe21429eabfc76c69ce2b0163a3dd ]
When iterating over sockets using vsock_for_each_connected_socket, make
sure that a transport filters out sockets that don't belong to the
transport.
There actually was an issue caused by this; in a nested VM
configuration, destroying the nested VM (which often involves the
closing of /dev/vhost-vsock if there was h2g connections to the nested
VM) kills not only the h2g connections, but also all existing g2h
connections to the (outmost) host which are totally unrelated.
Tested: Executed the following steps on Cuttlefish (Android running on a
VM) [1]: (1) Enter into an `adb shell` session - to have a g2h
connection inside the VM, (2) open and then close /dev/vhost-vsock by
`exec 3< /dev/vhost-vsock && exec 3<&-`, (3) observe that the adb
session is not reset.
[1] https://android.googlesource.com/device/google/cuttlefish/
Fixes: c0cfa2d8a788 ("vsock: add multi-transports support")
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jiyong Park <jiyong@google.com>
Link: https://lore.kernel.org/r/20220311020017.1509316-1-jiyong@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/af_vsock.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/net/af_vsock.h b/include/net/af_vsock.h index b1c717286993..4d8589244dc7 100644 --- a/include/net/af_vsock.h +++ b/include/net/af_vsock.h @@ -197,7 +197,8 @@ struct sock *vsock_find_bound_socket(struct sockaddr_vm *addr); struct sock *vsock_find_connected_socket(struct sockaddr_vm *src, struct sockaddr_vm *dst); void vsock_remove_sock(struct vsock_sock *vsk); -void vsock_for_each_connected_socket(void (*fn)(struct sock *sk)); +void vsock_for_each_connected_socket(struct vsock_transport *transport, + void (*fn)(struct sock *sk)); int vsock_assign_transport(struct vsock_sock *vsk, struct vsock_sock *psk); bool vsock_find_cid(unsigned int cid); |