netdev - Re: [PATCH] bpf: Prevent double bpf_prog_put call from bpf_tracing_prog

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Date:   Mon, 11 Jan 2021 23:40:07 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     ast@...nel.org, daniel@...earbox.net, andriin@...com,
        netdev@...r.kernel.org, bpf@...r.kernel.org, kafai@...com,
        songliubraving@...com, yhs@...com, john.fastabend@...il.com,
        kpsingh@...omium.org, toke@...hat.com
Subject: Re: [PATCH] bpf: Prevent double bpf_prog_put call from
 bpf_tracing_prog_attach

Hello:

This patch was applied to bpf/bpf.git (refs/heads/master):

On Mon, 11 Jan 2021 20:16:50 +0100 you wrote:
> The bpf_tracing_prog_attach error path calls bpf_prog_put
> on prog, which causes refcount underflow when it's called
> from link_create function.
> 
>   link_create
>     prog = bpf_prog_get              <-- get
>     ...
>     tracing_bpf_link_attach(prog..
>       bpf_tracing_prog_attach(prog..
>         out_put_prog:
>           bpf_prog_put(prog);        <-- put
> 
> [...]

Here is the summary with links:
  - bpf: Prevent double bpf_prog_put call from bpf_tracing_prog_attach
    https://git.kernel.org/bpf/bpf/c/5541075a348b

You are awesome, thank you!
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