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([2620:10d:c090:500::3:4473]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2be249ed6a4sm1423352eec.11.2026.03.03.09.51.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Mar 2026 09:51:25 -0800 (PST) Message-ID: Subject: Re: [PATCH 1/2] bpf: detect non null pointer with register operand in JEQ/JNE. From: Eduard Zingerman To: Cupertino Miranda , bpf@vger.kernel.org Cc: David Faust , Jose Marchesi , Elena Zannoni Date: Tue, 03 Mar 2026 09:51:24 -0800 In-Reply-To: <20260302161736.156685-2-cupertino.miranda@oracle.com> References: <20260302161736.156685-1-cupertino.miranda@oracle.com> <20260302161736.156685-2-cupertino.miranda@oracle.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.58.2 (3.58.2-1.fc43) Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Mon, 2026-03-02 at 16:17 +0000, Cupertino Miranda wrote: > This patch adds support to validate a pointer as not null when its > value is compared to a register which the verifiers knows to be null. > Initial pattern only verifies against an immediate operand. >=20 > Signed-off-by: Cupertino Miranda > Cc: David Faust > Cc: Jose Marchesi > Cc: Elena Zannoni > --- Acked-by: Eduard Zingerman [...]