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Thu, 27 Nov 2025 22:17:51 -0800 (PST) Received: from mail.gmail.com ([2a04:ee41:4:b2de:1ac0:4dff:fe0f:3782]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b76f51c55e9sm354922066b.26.2025.11.27.22.17.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Nov 2025 22:17:50 -0800 (PST) Date: Fri, 28 Nov 2025 06:24:18 +0000 From: Anton Protopopov To: bpf@vger.kernel.org Cc: Alexei Starovoitov Subject: Re: [PATCH bpf-next] bpf: force BPF_F_RDONLY_PROG on insn array creation Message-ID: References: <20251127210656.3239541-1-a.s.protopopov@gmail.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251127210656.3239541-1-a.s.protopopov@gmail.com> On 25/11/27 09:06PM, Anton Protopopov wrote: > The original implementation added a hack to check_mem_access() > to prevent programs from writing into insn arrays. To get rid > of this hack, enforce BPF_F_RDONLY_PROG on map creation. > > Also fix the corresponding selftest, as the error message changes > with this patch. Will resend it as part of a series, as the following patch depends on this one. (See https://lore.kernel.org/bpf/20251127210732.3241888-1-a.s.protopopov@gmail.com/T/#u) > [...]