From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f182.google.com (mail-pl1-f182.google.com [209.85.214.182]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 57CE03F23B1 for ; Thu, 23 Jul 2026 22:18:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784845099; cv=none; b=rl2NVIjouZit6kV4Po/6XQGw3kS12gIATag+qsUH9MfbrNSCez9sNpr28xCFb5nZTkjIvvZec0b84TBW0OI5eJ+9QAow+t3wh+6hhKWGKa7T7tsz9EdAQlgBBMxkZoC8lwwMk/pvOtkpOEwX4rLwzYSYNc9NvYvtqJ/ioHQ4L0g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784845099; c=relaxed/simple; bh=nbLKWRAXFd71UQQ6Ve0cryHcGeNLVedEPtgMKZ5b/V0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NLPHXWPZVVWUNMoK54I/qTdnAC1ktTvJjboiovGpELXkNL4+lPcoBImRlYs5zmQnCVtCJCKoawgLPjaYsr85y9kTJpOgDndMZBNhzIR8oNAXdFAJo7dtv8Qm3xveh9yxuJUNyKhv+tQs06lwcozpKzjjeGk03ebQNZZ7nZK2g0k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=o5E2TTLB; arc=none smtp.client-ip=209.85.214.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="o5E2TTLB" Received: by mail-pl1-f182.google.com with SMTP id d9443c01a7336-2cc891373e0so15049865ad.2 for ; Thu, 23 Jul 2026 15:18:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1784845098; x=1785449898; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=JMM2aO+mqZalyEuBpdxxd3H6h+YE2NwThz/TWTf8KYE=; b=o5E2TTLBZYVskOsalBMhl8ZpXXe4supUJSyYL/+XiXTU9hK7CyGGkZEI6ZmX+GVPBb syrzlWrVri5YleUtqeu+kKkn3nTityVcnYu/OntPD0R6EGPcftQI2M26s7MRW9Q9F9Bs eYp71kOXHvmiwNIOJHOfLX8xcTSNw+FyMQPwCxtb+4W8DYq7SPaq1Skw5qy1YRYOnqk0 BmXix6F3IdBUOaqAw9pyagkaVfFc6GHOayn/4EubG4y5KdmKfDt6mxA+xGA594ZrRe/Z eohdIjFbBLsLVx1dFhy7vDofT+bWaDz+ppdV9D4+GyHScb0TBH89vgUKq7tDuvTI6Dak W8zw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784845098; x=1785449898; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=JMM2aO+mqZalyEuBpdxxd3H6h+YE2NwThz/TWTf8KYE=; b=ny62EQJ6s9o0Fje5uMXWkELbckdp6eE1Qfmcg1vKDaZKXqJvIC/LEbAw13pTOOV0NO gPCiUierl0yuv2ajkcpPfbieGNn0GW73RyYu7mq6B6MOEhJOdhqNIG1gDv+9WqD0sfN+ wAvcuw0+rrKGG8JFaKlt/WohwO2UXh6/F2JzKIl3xMXI0vro3ZKlFQ+FPRjv2xOsenxg ZfKj5lO4stzfaREB2Hn7U0A5AfN0ItmCI+5r2tRYkOlMAmROiowLCmfwDL0dsDWoa5jM Wz3AdNbDSSrMXjG0RRy9JC+4nw+Ww/YF5/7WuHFkNPInS2bn1Oxanxvqec51vKgoBgK6 I9Qw== X-Gm-Message-State: AOJu0Yxw/FqkpdyxguMnbnuJWz0cFOBkDx1WNIoMjNmtcwe24tmfdlFQ MzDK5Zr4AiL++oJkZac5ZbBvWD5yDwgF5Ua7X4d5PPql+XPkSqIkGIT5zHnFsQ== X-Gm-Gg: AR+sD11c+zW4q8Vp03+L7m+65w7583C2prmo4jS/aIE8TmCek6+zR2AT8Pop59G7V8V Su8jFWjlsTh4QmrRsSmwA04/p3JQPIf9MCqRuzQsU5FUs8Hl86xDxyH9yhEsMMZUtNFQyzK0Sqi vOzYId2gJ7KTDf9K2Wj9FVlh/eEwJhxGB7N/el+1Zj2fWVSCFyjwGDyHUx/ciewxQbq0OZ6gS5z d0YUsKW4Mi6HlZtjerG981seoDom3UflWErUE6A80rMqg2PtZSJynx+1qqeX+L+EBlXCN7mP1CV 4f4IxnjZFhpURrxha/zEAYbC88u/jlGpgwlCX1AEhrJOMekd2icC5eVQ2umtmaQP82LMIFPpVPA mAE60oRwiNHW2qAiZ+6pP3UhpBukKZ6NIxqyQajybt+/cP3ieYrWghND363Vs0QFmQB73 X-Received: by 2002:a17:903:8c3:b0:2ca:bf68:2a54 with SMTP id d9443c01a7336-2cfa6c66729mr57224845ad.22.1784845097568; Thu, 23 Jul 2026 15:18:17 -0700 (PDT) Received: from localhost ([2a03:2880:ff:4a::]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2cf8efd88f7sm40710735ad.22.2026.07.23.15.18.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Jul 2026 15:18:17 -0700 (PDT) From: Amery Hung To: bpf@vger.kernel.org Cc: alexei.starovoitov@gmail.com, andrii@kernel.org, daniel@iogearbox.net, eddyz87@gmail.com, memxor@gmail.com, ameryhung@gmail.com, kernel-team@meta.com Subject: [PATCH bpf v2 2/2] selftests/bpf: Test passing scalar NULL to nonnull global subprog Date: Thu, 23 Jul 2026 15:18:15 -0700 Message-ID: <20260723221815.367797-2-ameryhung@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260723221815.367797-1-ameryhung@gmail.com> References: <20260723221815.367797-1-ameryhung@gmail.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Make sure the verifier reject passing a hardcoded NULL to an __arg_nonnull argument. Signed-off-by: Amery Hung --- .../selftests/bpf/progs/verifier_global_subprogs.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/tools/testing/selftests/bpf/progs/verifier_global_subprogs.c b/tools/testing/selftests/bpf/progs/verifier_global_subprogs.c index 75a2e3f48d0f..67dc352addfd 100644 --- a/tools/testing/selftests/bpf/progs/verifier_global_subprogs.c +++ b/tools/testing/selftests/bpf/progs/verifier_global_subprogs.c @@ -185,6 +185,16 @@ int arg_tag_nonnull_ptr_good(void *ctx) return subprog_nonnull_ptr_good(&x, &y); } +SEC("?raw_tp") +__failure __log_level(2) +__msg("R1 is expected to be non-NULL") +int arg_tag_nonnull_ptr_null_bad(void *ctx) +{ + int y = 74; + + return subprog_nonnull_ptr_good(NULL, &y); +} + /* this global subprog can be now called from many types of entry progs, each * with different context type */ -- 2.52.0