There was merge error introduced in the commit:
b762799dd8b03ec0aafc54ba165564902eac3e18 Mon Sep 17 00:00:00 2001

Fix the problem.

Signed-off-by: K. Y. Srinivasan <[email protected]>
Cc: <[email protected]>
---
 drivers/hv/channel_mgmt.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index bbff5f2..bd6d4d8 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -203,7 +203,8 @@ static void vmbus_process_rescind_offer(struct work_struct 
*work)
        struct vmbus_channel *primary_channel;
        struct vmbus_channel_relid_released msg;
 
-       vmbus_device_unregister(channel->device_obj);
+       if (channel->device_obj)
+               vmbus_device_unregister(channel->device_obj);
        memset(&msg, 0, sizeof(struct vmbus_channel_relid_released));
        msg.child_relid = channel->offermsg.child_relid;
        msg.header.msgtype = CHANNELMSG_RELID_RELEASED;
-- 
1.7.4.1

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