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Diffstat (limited to 'hw/block/xen-block.c')
| -rw-r--r-- | hw/block/xen-block.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c index ac82d54..83754a4 100644 --- a/hw/block/xen-block.c +++ b/hw/block/xen-block.c @@ -972,6 +972,15 @@ static void xen_block_device_destroy(XenBackendInstance *backend, object_unparent(OBJECT(xendev)); + /* + * Drain all pending RCU callbacks as object_unparent() frees `xendev' + * in a RCU callback. + * And due to the property "drive" still existing in `xendev', we + * can't destroy the XenBlockDrive associated with `xendev' with + * xen_block_drive_destroy() below. + */ + drain_call_rcu(); + if (iothread) { xen_block_iothread_destroy(iothread, errp); if (*errp) { |