netdev - Re: [PATCH bpf v2] xsk: fix race at socket teardown

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Date:   Mon, 28 Feb 2022 14:50:10 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Magnus Karlsson <magnus.karlsson@...il.com>
Cc:     magnus.karlsson@...el.com, bjorn@...nel.org, ast@...nel.org,
        daniel@...earbox.net, netdev@...r.kernel.org,
        maciej.fijalkowski@...el.com, jonathan.lemon@...il.com,
        bpf@...r.kernel.org, elza.mathew@...el.com
Subject: Re: [PATCH bpf v2] xsk: fix race at socket teardown

Hello:

This patch was applied to bpf/bpf.git (master)
by Daniel Borkmann <daniel@...earbox.net>:

On Mon, 28 Feb 2022 10:45:52 +0100 you wrote:
> From: Magnus Karlsson <magnus.karlsson@...el.com>
> 
> Fix a race in the xsk socket teardown code that can lead to a null
> pointer dereference splat. The current xsk unbind code in
> xsk_unbind_dev() starts by setting xs->state to XSK_UNBOUND, sets
> xs->dev to NULL and then waits for any NAPI processing to terminate
> using synchronize_net(). After that, the release code starts to tear
> down the socket state and free allocated memory.
> 
> [...]

Here is the summary with links:
  - [bpf,v2] xsk: fix race at socket teardown
    https://git.kernel.org/bpf/bpf/c/18b1ab7aa76b

You are awesome, thank you!
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