From nobody Thu Oct 2 02:15:17 2025 Received: from mail-pl1-f201.google.com (mail-pl1-f201.google.com [209.85.214.201]) (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 203941E0DD9 for ; Wed, 24 Sep 2025 04:41:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758688908; cv=none; b=bg+PEZYLbqR0JbR05w1u7GekdfJSJqPRneZbiwodjr9G+svoCPmL3x9bb3YDktuFjOG+cHVEFeIs6x+d7fv9g/83737TQKYRK7MNs2jjo21e8MvdXVdlJ6OfQFM2m1CjKdiwvLwv8CQ+sqDQ4V0Hsb9xXC51GJy3wWnIwfvazPI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758688908; c=relaxed/simple; bh=VkN8VdwJf6liSsFMc51tLMa9eVqIny+v9e0ELBq7zGo=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=EIHr+MFGmYSXL+pVvKLtE+qplE9M2pPvfZIvyoKPVlBjqDG5d/oIgTcebcpVnW5NtCgmNIvfgCUlCLH0T5yu0SyZ2WS/pSFLaQvDSjDeqYnkoiFuy/hhyABNqrPHvxcvPDJjsqTJrkiobCC0z4vef3PC58xK5GzY0MkYHzu8mBQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--wakel.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=mWnIgdqP; arc=none smtp.client-ip=209.85.214.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--wakel.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="mWnIgdqP" Received: by mail-pl1-f201.google.com with SMTP id d9443c01a7336-27c62320f16so25126535ad.1 for ; Tue, 23 Sep 2025 21:41:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1758688906; x=1759293706; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=EE4vZbGIJvGo3igNi0/c9KzOBwiHc7y3M43t0PHBKt4=; b=mWnIgdqPllmdmEo1TRbYeqSo1qr64q902tyiXqgICLgjjj4tTQwcSB1dZEg5P20uTq PnE11BwUyKx6VgJdcP1OpL4dhVTzU3e3liX8RAA1WoY7QfUAx3oCOR7VQXpvuJcbmETr 7e/Bty9ijyhJmfa3lle3FXU66Ijv0j2yWTqlBBwHkYBPJblWe4C8GKvFBpY9ffCQaryS ZvLqpsSj+7WHeHxEMM47Xm1pwnEMzeM3m/d34KYw2fiLHqkOePbhOF8iKMp8H+3W2lh4 SOpy03yVZTjvUeXqvHUTty323aKPrlcOwuRcUnNGQ59VQKVpudPNvAPhdN2KeETNWjIY cXGQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758688906; x=1759293706; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=EE4vZbGIJvGo3igNi0/c9KzOBwiHc7y3M43t0PHBKt4=; b=AL+tBFtGCEZtrNQc9DWGc8z0PpBIpHooOy+zxaWh5+hKBiDb9CeFi44OKNxbq2IYSL 9Pg1HMRKfhULL1HbrQgCwu9nH0aruqRknE7zAY3TKpenYFeL6DLY1ymGbI1CQM+Cd8xX LlsHH6IFq2zf3y7mVjwoy1WyQ5ZzQC7w4cl3cVJiV5GNuUsC8Z3BsLqclSM2X6Vwthcw xiSflpuc4dQ920yv3TWF03IfeDsAKKY43Jc6D5lIWVeTT9Qrhd0+kugcAk9GvFmZh/jI nLd8nfANIjSX7TxWUlw1B8vNgSrR7zssI5x7thINHsxeJnfUUK/1jUTVAPYyuKYY//+S YC/Q== X-Forwarded-Encrypted: i=1; AJvYcCXQUTKf6DMqfhKxrNjwQURQ03Y16YwKGHNs7BZeaxADXxBclbEqm/S6Od4qd0WM9lr7yhxnVb6nkuDIbhg=@vger.kernel.org X-Gm-Message-State: AOJu0YwH0fJi31DHYyJC9Ja6V+o5mJ81OezOGhFI8/ClBKYRSAUE9a+3 xPtTmrdGIREfFVs/XAi78zW3+myVigOdToZO6ZrY7DQLr5U4/Ty39GizeOsJABpNq9CTIBZiFRZ H+A== X-Google-Smtp-Source: AGHT+IFcIXMb7tZZIi7ut6xW8tfCbz5S5n6NQszs9NFINm8xgD7Ql5FeEdZB6xxblrlnYdA/SzP9uVQoDA== X-Received: from plbmv15.prod.google.com ([2002:a17:903:b8f:b0:267:fa7d:b637]) (user=wakel job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:f609:b0:248:e3fb:4dc8 with SMTP id d9443c01a7336-27cc7bb9ce9mr59498475ad.39.1758688906448; Tue, 23 Sep 2025 21:41:46 -0700 (PDT) Date: Wed, 24 Sep 2025 12:41:42 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.51.0.534.gc79095c0ca-goog Message-ID: <20250924044142.540162-1-wakel@google.com> Subject: [PATCH] Net: psock_tpacket: Fix null argument warning in walk_tx From: Wake Liu To: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Shuah Khan , netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Simon Horman , Wake Liu Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The sendto() call in walk_tx() was passing NULL as the buffer argument, which can trigger a -Wnonnull warning with some compilers. Although the size is 0 and no data is actually sent, passing a null pointer is technically incorrect. This commit changes NULL to an empty string literal ("") to satisfy the non-null argument requirement and fix the compiler warning. Signed-off-by: Wake Liu --- tools/testing/selftests/net/psock_tpacket.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/psock_tpacket.c b/tools/testing/se= lftests/net/psock_tpacket.c index 221270cee3ea..0c24adbb292e 100644 --- a/tools/testing/selftests/net/psock_tpacket.c +++ b/tools/testing/selftests/net/psock_tpacket.c @@ -470,7 +470,7 @@ static void walk_tx(int sock, struct ring *ring) =20 bug_on(total_packets !=3D 0); =20 - ret =3D sendto(sock, NULL, 0, 0, NULL, 0); + ret =3D sendto(sock, "", 0, 0, NULL, 0); if (ret =3D=3D -1) { perror("sendto"); exit(1); --=20 2.51.0.534.gc79095c0ca-goog