Hi Grant,
On 04/11/2013 09:28 AM, Grant Erickson wrote:
Per MEEGO-25999 <https://bugs.meego.com/show_bug.cgi?id=25999>, there
exists a race between scan_callback and wifi_disable such that a care-
fully-timed deassertion of the technology Powered property between
throw_wifi_scan and scan_callback will lead to a device reference
count underflow. A second Powered property false -> true -> false
transition will then deallocate the device and Wi-Fi will no longer
function until connman or the system is restarted.
This patch addresses that race by tracking and observing the disabling
state such that scan_callback ad wifi_disable can effectively negotiate
which has performed the device release, thereby avoiding the double
release and resulting underflow.
as discussed on IRC, ACK.
Thanks for looking into this issue.
cheers,
daniel
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