RE: [PATCH 1/7] hv: acquire vmbus_connection.channel_mutex in vmbus_free_channels()

[Dexuan Cui]

> From: Vitaly Kuznetsov [mailto:vkuznets@xxxxxxxxxx]
> Sent: Friday, November 25, 2016 20:49
> To: devel@xxxxxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx; KY Srinivasan <kys@xxxxxxxxxxxxx>; Haiyang
> Zhang <haiyangz@xxxxxxxxxxxxx>; Dexuan Cui <decui@xxxxxxxxxxxxx>;
> Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx>
> Subject: [PATCH 1/7] hv: acquire vmbus_connection.channel_mutex in
> vmbus_free_channels()
> 
> "kernel BUG at drivers/hv/channel_mgmt.c:350!" is observed when hv_vmbus
> module is unloaded. BUG_ON() was introduced in commit 85d9aa705184
> ("Drivers: hv: vmbus: add an API vmbus_hvsock_device_unregister()") as
> vmbus_free_channels() codepath was apparently forgotten.
> 
> Fixes: 85d9aa705184 ("Drivers: hv: vmbus: add an API
> vmbus_hvsock_device_unregister()")
> Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>

Reviewed-by: Dexuan Cui <decui@xxxxxxxxxxxxx>

Thanks for the fix!

-- Dexuan