4b436bcbc3
Currently if SSR happens and at the same time if driver gets del virtual interface which is a vdev transition, it bloks this vdev transition and queues into dsc queue assuming that it will execute once SSR completes. There is an issue with above assumption, del virtual interface comes with rtnl lock held which may lead for other processes to misbehave which are waiting for rtnl lock. in current case kernel is waiting for rtnl lock to send shutdown to driver as part of the SSR and this rtnl lock is held by del virtual interface which is waiting inside dsc queue for SSR to complete, this leads to the deadlock. To address above issue, do not insert the vdev transintion in dsc queue in case of SSR and return the failure instead. Change-Id: I19c897d68086d885f340d35c686badb70601076a CRs-Fixed: 2730903 |
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