[lnst trac] #11: Race in NetTestController.__prepare_device()
#11: Race in NetTestController.__prepare_device()
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Reporter: rpazdera | Owner: rpazdera
Type: defect | Status: new
Priority: critical | Milestone:
Component: component1 | Version:
Keywords: | Blocked By:
Blocking: |
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There's a race in this method of NetTestController class. Sometimes
multiple devices with a same MAC address can be accepted by LNST.
It can happen if you try to create a device with MAC that already exist on
the target domain. If the interface addition is somehow delayed (because
of scheduling for instance), the wait_for() function will pass correctly.
It will find the already existing device, while the freshly created
doesn't exist yet.
The correct behavior would be to recognize this and fail because of a
hwaddr collision between two interfaces.
I will look at this and send a patch asap.
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Ticket URL: <https://fedorahosted.org/lnst/ticket/11>
lnst <http://example.org/>
My example project