Re: [PATCH v2] openvswitch: Disable bottom half when grabbing stats lock in userspace context

[Pravin Shelar]

On Thu, Feb 27, 2014 at 2:10 PM, Zoltan Kiss <zoltan.kiss@xxxxxxxxxx> wrote:
> The megaflow feature introduced per-CPU stats, and the new code did some
> refactoring as well [1]. However the new functions doesn't disable bottom halves
> when locking the stat, and as they can be called from userspace context, they
> can be interrupted by netif_receive_skb.
>
> [1] e298e50570: openvswitch: Per cpu flow stats.
>
This bug is fixed in openvswitch repo by commit "datapath: Fix
deadlock during stats update."


Thanks.
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