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([2620:10d:c090:500::7:1c5e]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7f3c974c65esm2958910a34.0.2026.08.13.12.52.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Aug 2026 12:52:13 -0700 (PDT) Message-ID: <5956c0dcda31c57cac7849abb44be1e50a3efe1a.camel@gmail.com> Subject: Re: [PATCH bpf-next v4 09/16] bpf: Report Memory Safety bounds errors From: Eduard Zingerman To: Kumar Kartikeya Dwivedi , bpf@vger.kernel.org Cc: Alexei Starovoitov , Andrii Nakryiko , Daniel Borkmann , Emil Tsalapatis , kkd@meta.com, kernel-team@meta.com Date: Thu, 13 Aug 2026 12:52:11 -0700 In-Reply-To: <20260812233326.3575958-10-memxor@gmail.com> References: <20260812233326.3575958-1-memxor@gmail.com> <20260812233326.3575958-10-memxor@gmail.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.60.1 (3.60.1-1.fc44) Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Thu, 2026-08-13 at 01:33 +0200, Kumar Kartikeya Dwivedi wrote: > Augment selected memory-range verifier failures with Memory Safety report= s > while preserving the existing terse verifier messages for compatibility. >=20 > Cover stack spill corruption, uninitialized stack reads, variable stack h= elper > accesses, and check_mem_region_access() range-proof failures. The bounds = report > spells out the required offset + access_size <=3D object_size proof with = concrete > values and uses scoped diagnostic history for causal context. >=20 > Signed-off-by: Kumar Kartikeya Dwivedi > --- Acked-by: Eduard Zingerman The `const char *fmt =3D ...` is still ugly, though. ...