linux-kernel - Re: [PATCH bpf-next] bpf, sockmap: fix deadlocks in the sockhash and sockmap

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Message-Id: <168134281755.14415.12895311674672248237.git-patchwork-notify@kernel.org>
Date:   Wed, 12 Apr 2023 23:40:17 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Xin Liu <liuxin350@...wei.com>
Cc:     andrii@...nel.org, ast@...nel.org, daniel@...earbox.net,
        martin.lau@...ux.dev, song@...nel.org, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org, sdf@...gle.com,
        haoluo@...gle.com, jolsa@...nel.org, bpf@...r.kernel.org,
        hsinweih@....edu, linux-kernel@...r.kernel.org, yanan@...wei.com,
        wuchangye@...wei.com, xiesongyang@...wei.com,
        kongweibin2@...wei.com, zhangmingyi5@...wei.com
Subject: Re: [PATCH bpf-next] bpf,
 sockmap: fix deadlocks in the sockhash and sockmap

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@...nel.org>:

On Thu, 6 Apr 2023 20:26:22 +0800 you wrote:
> When huang uses sched_switch tracepoint, the tracepoint
> does only one thing in the mounted ebpf program, which
> deletes the fixed elements in sockhash ([0])
> 
> It seems that elements in sockhash are rarely actively
> deleted by users or ebpf program. Therefore, we do not
> pay much attention to their deletion. Compared with hash
> maps, sockhash only provides spin_lock_bh protection.
> This causes it to appear to have self-locking behavior
> in the interrupt context.
> 
> [...]

Here is the summary with links:
  - [bpf-next] bpf, sockmap: fix deadlocks in the sockhash and sockmap
    https://git.kernel.org/bpf/bpf-next/c/ed17aa92dc56

You are awesome, thank you!
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