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Fri, 04 Sep 2026 17:06:31 -0700 (PDT) Received: from ezingerman-fedora-PF4V722J.thefacebook.com ([2620:10d:c090:500::5:4f3d]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3356dc5c04dsm42277eec.8.2026.09.04.17.06.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Sep 2026 17:06:31 -0700 (PDT) From: Eduard Zingerman To: bpf@vger.kernel.org, ast@kernel.org, andrii@kernel.org Cc: daniel@iogearbox.net, martin.lau@linux.dev, kernel-team@fb.com, yonghong.song@linux.dev, eddyz87@gmail.com, memxor@gmail.com Subject: [PATCH bpf 10/10] bpf: use mark_arg_precision() in check_mem_size_reg() Date: Fri, 4 Sep 2026 17:06:01 -0700 Message-ID: <20260904-register-is-null-precise-fixes-v1-10-0f5a360ff15d@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260904-register-is-null-precise-fixes-v1-0-0f5a360ff15d@gmail.com> References: <20260904-register-is-null-precise-fixes-v1-0-0f5a360ff15d@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="utf-8" Content-Transfer-Encoding: 8bit Use newly added mark_arg_precision() helper in check_mem_size_reg(). Signed-off-by: Eduard Zingerman --- kernel/bpf/verifier.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index dc1fef1ef1ef..fc57275f15b6 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -7153,14 +7153,8 @@ static int check_mem_size_reg(struct bpf_verifier_env *env, if (err && failure) *failure = BPF_MEM_SIZE_FAIL_MEMORY; - if (!err) { - int regno = reg_from_argno(size_argno); - - if (regno >= 0) - err = mark_chain_precision(env, regno); - else - err = mark_stack_arg_precision(env, arg_idx_from_argno(size_argno)); - } + if (!err) + err = mark_arg_precision(env, size_argno); return err; -- 2.55.0