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 ]------------ 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 [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
