Messages in this thread | | | Subject | Re: [PATCH v2] xen-netfront: Fix Rx stall during network stress and OOM | From | Boris Ostrovsky <> | Date | Mon, 30 Jan 2017 12:06:34 -0500 |
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On 01/30/2017 11:47 AM, Vineeth Remanan Pillai wrote: > >> 2. It tickles a latent bug during resume where the timer triggers >> before we re-connect. The trouble is that we now try to dereference >> queue->rx.sring which is NULL since we disconnect in >> netfront_resume(). (Curiously, I only observe it with 32-bit guests) > I think we may hit this bug after removing the timer as well. We call > RING_PUSH_REQUESTS_AND_CHECK_NOTIFY soon after, which also dereference > queue->rx.sring.
If the timer is deleted in xennet_disconnect_backend() then why would anyone be pushing anything to the backend after that?
-boris
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