When running under qemu-kvm-0.11.0:
BUG: unable to handle kernel paging request at 56e58955
...
Process vballoon (pid: 1297, ti=c7976000 task=c70a6ca0 task.ti=c7
...
Call Trace:
[<c88253a3>] ? balloon+0x1b3/0x440 [virtio_balloon]
[<c041c2d7>] ? schedule+0x327/0x9d0
[<c88251f0>] ? balloon+0x0/0x440 [virtio_balloon]
[<c014a2d4>] ? kthread+0x74/0x80
[<c014a260>] ? kthread+0x0/0x80
[<c0103b36>] ? kernel_thread_helper+0x6/0x30
need_stats_update should be zero-initialized.
Signed-off-by: Rusty Russell <[email protected]>
Cc: Adam Litke <[email protected]>
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -292,6 +292,7 @@ static int virtballoon_probe(struct virt
vb->num_pages = 0;
init_waitqueue_head(&vb->config_change);
vb->vdev = vdev;
+ vb->need_stats_update = 0;
/* We expect two virtqueues: inflate and deflate,
* and optionally stat. */
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