On Tue, Aug 22, 2017 at 04:59:51PM +0200, Pierre Morel wrote: > Hi, > > I got a problem with virtio-net in a QEMU guest. > > When virtio-net is used as a module in a guest and the network is > activated, removing the virtio-net modules produces a kernel error: > > [ 2375.624949] Last Breaking-Event-Address: > [ 2375.624954] [<00000000001453d4>] __cpuhp_remove_state+0x84/0x1a8 > [ 2375.624959] ---[ end trace cc9fd68b89f5235a ]--- > [ 2375.624966] Error: Removing state 163 which has instances left. > [ 2375.624985] ------------[ cut here ]------------
Which kernel do you use? > The problem is produced by an inversion in the order of unregistering > the driver and the hotplug state machine callbacks in virtio_net_driver_exit. > > This patch solves the problem by first unregistering the virtio_net_driver > before unregistering the hotplug state machine callbacks. > > Best regards, > > Pierre Morel > > Pierre Morel (1): > net/virtio-net: reverse unregistering on exit > > drivers/net/virtio_net.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > -- > 2.7.4 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
