Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
MIME-Version: 1.0
References: <20210427112958.773132-1-revest@chromium.org>
In-Reply-To: <20210427112958.773132-1-revest@chromium.org>
From:   Alexei Starovoitov <alexei.starovoitov@gmail.com>
Date:   Tue, 27 Apr 2021 08:07:57 -0700
Message-ID: <CAADnVQJGMU2OAA4cRuD=LmfF3Wn5z0hqo1Uz9nx-K_KWuCA70A@mail.gmail.com>
Subject: Re: [PATCH bpf-next] bpf: Lock bpf_trace_printk's tmp buf before it
 is written to
To:     Florent Revest <revest@chromium.org>
Cc:     bpf <bpf@vger.kernel.org>, Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Andrii Nakryiko <andrii@kernel.org>,
        KP Singh <kpsingh@kernel.org>,
        Brendan Jackman <jackmanb@google.com>,
        Rasmus Villemoes <linux@rasmusvillemoes.dk>,
        LKML <linux-kernel@vger.kernel.org>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Tue, Apr 27, 2021 at 4:30 AM Florent Revest <revest@chromium.org> wrote:
>
> bpf_trace_printk uses a shared static buffer to hold strings before they
> are printed. A recent refactoring moved the locking of that buffer after
> it gets filled by mistake.
>
> Fixes: d9c9e4db186a ("bpf: Factorize bpf_trace_printk and bpf_seq_printf")
> Reported-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
> Signed-off-by: Florent Revest <revest@chromium.org>

Applied.

Pls send v2 of bstr_printf series as soon as possible. Thanks!