lkml.org 
[lkml]   [2017]   [Jan]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v2] xen-netfront: Fix Rx stall during network stress and OOM
From
Date
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

\
 
 \ /
  Last update: 2017-01-30 18:07    [W:0.082 / U:0.100 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site