From nobody Mon Feb 9 12:15:27 2026 Received: from mail-wr1-f73.google.com (mail-wr1-f73.google.com [209.85.221.73]) (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 181BE280A2D for ; Fri, 28 Feb 2025 16:55:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740761709; cv=none; b=C9hgt6bUjIf7Rbav0ZGhvmfxU5Uzsm4ZC6201z6MrDvJhPSK/5bl/BrWPHflKFA8T3fOBbL/DPU1LnMvd925f92HelHFtkXM7g62JtDA+cKIYdM2iMy/OGjwksBPpCiiR6GgYB10M52C3ZapSM8A7uq7r+YpRjTm7YoZfYkAdLw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740761709; c=relaxed/simple; bh=7XspZM8ZAnG3LYxKGks+Dzhnygkc4NT/9ogDGinmMCE=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=s8dPZxvWMj1v1KFvotspz7Rd/Ux4V/XqDNASqMUgo29ffzHZGFYMql0/ECzGki1qpBaZCea+S+sm3GBlfqH0ao9TGe5uNNXfMksD8ujWk2FITidr/SfIzf88WcilqcLQ39R3822e6iQoYRzp8xqwy8+1viTuPJ5iaTEhHO5xCy0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jackmanb.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=qd77Jd84; arc=none smtp.client-ip=209.85.221.73 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--jackmanb.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="qd77Jd84" Received: by mail-wr1-f73.google.com with SMTP id ffacd0b85a97d-38f28a4647eso1123618f8f.1 for ; Fri, 28 Feb 2025 08:55:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1740761706; x=1741366506; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=9d0/khHAO5zgmsRDUqio7iG7quhZmE2f4ksjxnf1MHE=; b=qd77Jd84CQ9m2DNLGHmTlx3hwx1X7C5PUcBsG8fI1f6fh6EaFKsLMx5/y2er1UnyJ+ +fNkT0VhoCNYeC2Pl9mvpPcMOWSS+/1g98w5RKbG1RzCiU3sJSwmzqiGsxjFaZLxZSv8 cdY4c8hVEPTCk2eyD+BX6tCcHM+DE0JRZLXaqze8KZ8dLhFuArrEmnHbpmJVHXojWtpo opWBky/yp2HrqR3RffICxm0Fp03Cy+Zxszn9Mjz9tc0wqBR7gqqBWzBgNPI/FQiFMnqG 52wbOX53bh3wX1vzCf7XGGUJa/I8XGgpjIc2qNHgZt0Ly929UQXjMhkZqDojLXJ//Ab4 O1Ew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1740761706; x=1741366506; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=9d0/khHAO5zgmsRDUqio7iG7quhZmE2f4ksjxnf1MHE=; b=jBJm/yzx//gxRTFNS1pnmcQjqOOGzkBQ4Em1yChOOWvYDpbJmxo3p68LM16wG8QTqN WRad64qOpf44M/MmR4bxujYBxOEOWFrc6Ag5Ny5qiURFLGgvo2atuSv3NKdA0ES/UWym q5hLdG9OjSx7MPzFMO48ghD0ywhsVkb97Jg22S6K+AS5KR3NCvj2R5smZNc1o+wUGHKr vGNFUKNx2GXgxdEi2IOQB8uuxWQEAbbiGGSYk4doa6SAI5jYlp3tJBkV0ElwMTP8jYn1 LUA9WKZWUe7ruAmczIXN/XolPT7gDa04KS8ep7rhZ9xC8OSbJToMuHdfiY5U5TK9Msxs DuHQ== X-Forwarded-Encrypted: i=1; AJvYcCW7URc1QUrMLRsTZpPrV2qlp1ZWJ4JKBLiX6Kb6nVAJQt+V1+yakGfz3Bs5gceMvoh0OV6u1QQ0LWDHQXY=@vger.kernel.org X-Gm-Message-State: AOJu0Yw+SF4qFBuuf6wMkympnRZsuentPXVnc53ONDpxkGc8gsnu1hpI +8pUKA2GdvPXQqQiCZQaYJM1YNDC/rgGxNjwsORDvlOhtF3N4SBWqzwaaANF2bRZ45Mqa3KOHtd sRhUXQee1+g== X-Google-Smtp-Source: AGHT+IG11sEYt2OnuCbnie6xNgIUE5IX6nCNDcxXVlZV0z0FMYzaNDcNJwgRdo42mUkZXMNKwRZc5xmL/K51cw== X-Received: from wrbfy2.prod.google.com ([2002:a05:6000:2d82:b0:390:dd74:bc9c]) (user=jackmanb job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6000:2a10:b0:38f:4d20:4a0a with SMTP id ffacd0b85a97d-390ec7d1dc5mr2770264f8f.28.1740761706596; Fri, 28 Feb 2025 08:55:06 -0800 (PST) Date: Fri, 28 Feb 2025 16:54:53 +0000 In-Reply-To: <20250228-mm-selftests-v3-0-958e3b6f0203@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250228-mm-selftests-v3-0-958e3b6f0203@google.com> X-Mailer: b4 0.15-dev Message-ID: <20250228-mm-selftests-v3-5-958e3b6f0203@google.com> Subject: [PATCH v3 05/10] selftests/mm: Print some details when uffd-stress gets bad params From: Brendan Jackman To: Lorenzo Stoakes , Andrew Morton , Shuah Khan Cc: Dev Jain , linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Brendan Jackman Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable So this can be debugged more easily. Signed-off-by: Brendan Jackman Reviewed-by: Dev Jain --- tools/testing/selftests/mm/uffd-stress.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/uffd-stress.c b/tools/testing/selft= ests/mm/uffd-stress.c index ec842bbb9f18e291fa51de0ed8d1fbf9aaf14372..efe2051c393096e237d942c04a2= 64b6611a6e127 100644 --- a/tools/testing/selftests/mm/uffd-stress.c +++ b/tools/testing/selftests/mm/uffd-stress.c @@ -456,7 +456,8 @@ int main(int argc, char **argv) =20 nr_pages_per_cpu =3D bytes / page_size / nr_threads; if (!nr_pages_per_cpu) { - _err("invalid MiB"); + _err("pages_per_cpu =3D 0, cannot test (%lu / %lu / %lu)", + bytes, page_size, nr_threads); usage(); } =20 --=20 2.48.1.711.g2feabab25a-goog