Re: [PATCH net] net: mana: Fix race on per-CQ variable napi work_done

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (master)
by Paolo Abeni <pabeni@xxxxxxxxxx>:

On Fri,  2 Dec 2022 11:43:10 -0800 you wrote:
> After calling napi_complete_done(), the NAPIF_STATE_SCHED bit may be
> cleared, and another CPU can start napi thread and access per-CQ variable,
> cq->work_done. If the other thread (for example, from busy_poll) sets
> it to a value >= budget, this thread will continue to run when it should
> stop, and cause memory corruption and panic.
> 
> To fix this issue, save the per-CQ work_done variable in a local variable
> before napi_complete_done(), so it won't be corrupted by a possible
> concurrent thread after napi_complete_done().
> 
> [...]

Here is the summary with links:
  - [net] net: mana: Fix race on per-CQ variable napi work_done
    https://git.kernel.org/netdev/net/c/18010ff776fa

You are awesome, thank you!
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