From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1478BC79FA1 for ; Tue, 8 Sep 2026 10:13:42 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 089C96B0093; Tue, 8 Sep 2026 06:13:42 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 061A66B0095; Tue, 8 Sep 2026 06:13:42 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E94626B0096; Tue, 8 Sep 2026 06:13:41 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id B74686B0093 for ; Tue, 8 Sep 2026 06:13:41 -0400 (EDT) Received: from smtpin16.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 3CED71A04F6 for ; Tue, 8 Sep 2026 10:13:41 +0000 (UTC) X-FDA: 85190183442.16.1AB8CCF Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf21.hostedemail.com (Postfix) with ESMTP id 692A31C000A for ; Tue, 8 Sep 2026 10:13:39 +0000 (UTC) Authentication-Results: imf21.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=OO5YyETh; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf21.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1788862419; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=s5Rhz3vZATjbgv4L2KAACRCIbtaQyFKnS2m/CL22BH0=; b=rgHqo9TOkZb10ERq52IDn1PCbzsRRLfRAan5u5avQPlFySW1i3mI4LTd6JoL1hj6s7dFNa xEbM1bfme70e9bsS1JPRNeQ8RxA7cC9PwEf/oZfUdJ57QKknW5yMDImM6RWQNT/kSXjEhb Ph9hpuRZ45897utiVg928zzXXfgDgIo= ARC-Authentication-Results: i=1; imf21.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=OO5YyETh; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf21.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1788862419; b=BQaLxp4JrR9b0UJBfMipPZrFLWI4Dk58xhmP+tTLFNdfeW+7klzZxemQr1LKY4+cQG8/d1 hpSR9YXtiZsonMjsyMgk+MoWTO4I4+8GYjCEtPhN6uRfM6ZhLOd19SAW3JlvO9uT9hLynW i694K0S1bkkhD/0eb8yfWA7GvDMKpxI= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 39AE6413B9; Tue, 8 Sep 2026 10:13:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D794C1F00A3A; Tue, 8 Sep 2026 10:13:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788862418; bh=s5Rhz3vZATjbgv4L2KAACRCIbtaQyFKnS2m/CL22BH0=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=OO5YyEThil9/HPDJqoIpj1Ew48vNHqwYqwgFZG09fyVBdWNykF7HX/zrzOp1X+egE c0JHpYD0fJtjE2J/OxgDUrDOrwQGsqY8cKYgf9Nh4dgXFUaDA+mhh21BeAWQHvgO1e FybHHB8M0FbsEEaJmOKRedjFAiQ7Bg8NM0FrJfJQEVsIpxwd6RwIWX/W8mi8tMnKQ5 QQQwz6oOprf0KFSJNTTbFexVcGiO+t8E/iKhnsPoayZz2HRcLGqURRC8hsWkOLVJx6 Pp0/QHNDZOD2UpFdE/blACWUocYPjIbVp+2k06z5jDSVV0Q1Ql6tx3+Rae0mUR6ZOE aWiFMONpCEtUQ== Message-ID: Date: Tue, 8 Sep 2026 12:13:32 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/2] selftests/mm: Reject invalid test selections before running tests To: Tianyi Chen , Andrew Morton Cc: shuah@kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, jsavitz@redhat.com References: <20260906135444.749144-1-hi@tychen.cc> <178886112560.138404.1278745290043112298.mm-cli-v2-0@tychen.cc> <178886112560.138404.14562368683011041790.mm-cli-v2-1@tychen.cc> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzS5EYXZpZCBIaWxk ZW5icmFuZCAoQ3VycmVudCkgPGRhdmlkQGtlcm5lbC5vcmc+wsGQBBMBCAA6AhsDBQkmWAik AgsJBBUKCQgCFgICHgUCF4AWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaYJt/AIZAQAKCRBN 3hD3AP+DWriiD/9BLGEKG+N8L2AXhikJg6YmXom9ytRwPqDgpHpVg2xdhopoWdMRXjzOrIKD g4LSnFaKneQD0hZhoArEeamG5tyo32xoRsPwkbpIzL0OKSZ8G6mVbFGpjmyDLQCAxteXCLXz ZI0VbsuJKelYnKcXWOIndOrNRvE5eoOfTt2XfBnAapxMYY2IsV+qaUXlO63GgfIOg8RBaj7x 3NxkI3rV0SHhI4GU9K6jCvGghxeS1QX6L/XI9mfAYaIwGy5B68kF26piAVYv/QZDEVIpo3t7 /fjSpxKT8plJH6rhhR0epy8dWRHk3qT5tk2P85twasdloWtkMZ7FsCJRKWscm1BLpsDn6EQ4 jeMHECiY9kGKKi8dQpv3FRyo2QApZ49NNDbwcR0ZndK0XFo15iH708H5Qja/8TuXCwnPWAcJ DQoNIDFyaxe26Rx3ZwUkRALa3iPcVjE0//TrQ4KnFf+lMBSrS33xDDBfevW9+Dk6IISmDH1R HFq2jpkN+FX/PE8eVhV68B2DsAPZ5rUwyCKUXPTJ/irrCCmAAb5Jpv11S7hUSpqtM/6oVESC 3z/7CzrVtRODzLtNgV4r5EI+wAv/3PgJLlMwgJM90Fb3CB2IgbxhjvmB1WNdvXACVydx55V7 LPPKodSTF29rlnQAf9HLgCphuuSrrPn5VQDaYZl4N/7zc2wcWM7BTQRVy5+RARAA59fefSDR 9nMGCb9LbMX+TFAoIQo/wgP5XPyzLYakO+94GrgfZjfhdaxPXMsl2+o8jhp/hlIzG56taNdt VZtPp3ih1AgbR8rHgXw1xwOpuAd5lE1qNd54ndHuADO9a9A0vPimIes78Hi1/yy+ZEEvRkHk /kDa6F3AtTc1m4rbbOk2fiKzzsE9YXweFjQvl9p+AMw6qd/iC4lUk9g0+FQXNdRs+o4o6Qvy iOQJfGQ4UcBuOy1IrkJrd8qq5jet1fcM2j4QvsW8CLDWZS1L7kZ5gT5EycMKxUWb8LuRjxzZ 3QY1aQH2kkzn6acigU3HLtgFyV1gBNV44ehjgvJpRY2cC8VhanTx0dZ9mj1YKIky5N+C0f21 zvntBqcxV0+3p8MrxRRcgEtDZNav+xAoT3G0W4SahAaUTWXpsZoOecwtxi74CyneQNPTDjNg azHmvpdBVEfj7k3p4dmJp5i0U66Onmf6mMFpArvBRSMOKU9DlAzMi4IvhiNWjKVaIE2Se9BY FdKVAJaZq85P2y20ZBd08ILnKcj7XKZkLU5FkoA0udEBvQ0f9QLNyyy3DZMCQWcwRuj1m73D sq8DEFBdZ5eEkj1dCyx+t/ga6x2rHyc8Sl86oK1tvAkwBNsfKou3v+jP/l14a7DGBvrmlYjO 59o3t6inu6H7pt7OL6u6BQj7DoMAEQEAAcLBfAQYAQgAJgIbDBYhBBvZyq1zXEw6Rg38yk3e EPcA/4NaBQJonNqrBQkmWAihAAoJEE3eEPcA/4NaKtMQALAJ8PzprBEXbXcEXwDKQu+P/vts IfUb1UNMfMV76BicGa5NCZnJNQASDP/+bFg6O3gx5NbhHHPeaWz/VxlOmYHokHodOvtL0WCC 8A5PEP8tOk6029Z+J+xUcMrJClNVFpzVvOpb1lCbhjwAV465Hy+NUSbbUiRxdzNQtLtgZzOV Zw7jxUCs4UUZLQTCuBpFgb15bBxYZ/BL9MbzxPxvfUQIPbnzQMcqtpUs21CMK2PdfCh5c4gS sDci6D5/ZIBw94UQWmGpM/O1ilGXde2ZzzGYl64glmccD8e87OnEgKnH3FbnJnT4iJchtSvx yJNi1+t0+qDti4m88+/9IuPqCKb6Stl+s2dnLtJNrjXBGJtsQG/sRpqsJz5x1/2nPJSRMsx9 5YfqbdrJSOFXDzZ8/r82HgQEtUvlSXNaXCa95ez0UkOG7+bDm2b3s0XahBQeLVCH0mw3RAQg r7xDAYKIrAwfHHmMTnBQDPJwVqxJjVNr7yBic4yfzVWGCGNE4DnOW0vcIeoyhy9vnIa3w1uZ 3iyY2Nsd7JxfKu1PRhCGwXzRw5TlfEsoRI7V9A8isUCoqE2Dzh3FvYHVeX4Us+bRL/oqareJ CIFqgYMyvHj7Q06kTKmauOe4Nf0l0qEkIuIzfoLJ3qr5UyXc2hLtWyT9Ir+lYlX9efqh7mOY qIws/H2t In-Reply-To: <178886112560.138404.14562368683011041790.mm-cli-v2-1@tychen.cc> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Stat-Signature: f6jp133xg8bswardk9fsr16krcgnkhtj X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 692A31C000A X-Rspam-User: X-HE-Tag: 1788862419-523712 X-HE-Meta: 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 1et3MEzn hYWdevmo6xo848ivX7GVIguIuDc1u/b5fCS/nDU/VD1ZQ0pnSqzgjIea11k6pbYhRb6CCPUzb/tlJpBts65suWnYx1+nezzNhZZX4noYF69rcEYL71oYvlUH73fJd9ADzgKaevLxUv7FRSCLSmvLmd27P+ELcOpBsjvIn+3AKyHi/LBw4MckzLwWV01NQMhWqztBj0+wTzkqCjKIp81kbKkG73O8nYC17wTL6Fkyni9scQVmesmBT8Mw77wZ77P1mbpLM Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 9/8/26 11:55, Tianyi Chen wrote: > getopts reports unknown options and missing arguments, but run_vmtests.sh > ignores its error result and continues with test setup. An empty -t > argument also falls back to the default selection, while unknown category > names can silently select no tests and still reach setup code. > > Exit on getopts errors and validate category names against the existing > list in usage() before any test setup. Reject empty and whitespace-only > selections, and normalize category separators so validation and execution > agree. Keep the default selection for an unset or empty VM_SELFTEST_ITEMS > environment variable, and preserve the existing standalone default value. > > Fixes: 85463321e726 ("selftests/vm: enable running select groups of tests") > Assisted-by: Codex:GPT-6 > Signed-off-by: Tianyi Chen > --- > tools/testing/selftests/mm/run_vmtests.sh | 27 +++++++++++++++++++---- > 1 file changed, 23 insertions(+), 4 deletions(-) > > diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh > index d09f9f6a384..836c7454cba 100755 > --- a/tools/testing/selftests/mm/run_vmtests.sh > +++ b/tools/testing/selftests/mm/run_vmtests.sh > @@ -96,26 +96,45 @@ separated by spaces: > > example: ./run_vmtests.sh -t "hmm mmap ksm" > EOF > - exit 0 > } > > RUN_ALL=false > RUN_DESTRUCTIVE=false > TAP_PREFIX="# " > > +# An unset or empty environment selection keeps the default behavior. > +VM_SELFTEST_ITEMS=${VM_SELFTEST_ITEMS:-default} Who would set it at this point? Can't this just be VM_SELFTEST_ITEMS="default" > + > while getopts "aht:nd" OPT; do > case ${OPT} in > "a") RUN_ALL=true ;; > - "h") usage ;; > + "h") usage; exit 0 ;; > "t") VM_SELFTEST_ITEMS=${OPTARG} ;; > "n") TAP_PREFIX= ;; > "d") RUN_DESTRUCTIVE=true ;; > + "?") exit 1 ;; > esac > done > shift $((OPTIND -1)) > > -# default behavior: run all tests > -VM_SELFTEST_ITEMS=${VM_SELFTEST_ITEMS:-default} > +# Normalize whitespace so validation and test_selected() use the same names. > +read -r -a selected_categories <<< "${VM_SELFTEST_ITEMS//$'\n'/ }" > +VM_SELFTEST_ITEMS="${selected_categories[*]}" > +if [ -z "$VM_SELFTEST_ITEMS" ]; then > + echo "No test categories specified" >&2 > + exit 1 > +fi > + > +if [ "$VM_SELFTEST_ITEMS" != "default" ]; then > + # Keep the documented category list as the source of valid names. That makes sense to me. It's interesting what would happen when trying to run a test that does not even exist for the architecture. Getting some feedback that the test was skipped would be nice. But that's something for another day :) -- Cheers, David