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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E7303C43602 for ; Tue, 7 Jul 2026 22:29:39 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4gvwrf115mz2xnp; Wed, 08 Jul 2026 08:29:38 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2600:3c0a:e001:78e:0:1991:8:25" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1783463378; cv=none; b=fGOrlG2CVlbfF+inCbGvIhulSwRb9AnSdXXu1I4hsKME6fcODvV3PVmLUcA/uGJHCzVvf3YczUzpBhS7Kn+B0WSO5+btrjcTojQX0OyEGw7uOAGaTdvkOMkhNXOsB9rVotnDRWbk+vPG1+VCBY5zJdlppZBDrF+MylvH11NIVObbMO80WVimLU0ocKqxCLW9JgYINDw34wrFRLUVpzXh3pHSlNe+actwciJNLrm7sxcUj5e2npJXF9/0r+o0jeTGxiAMAxCcqzrN298npOnjxjwT00T462vUE3U64rB32wEcMs2n00OkcMwzOZLd628RFwdggSBnO37QjnuLgdmEdw== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1783463378; c=relaxed/relaxed; bh=AZhsVbg+pGpdN+LoqPtk1yF43RbR2KSyGy50RUBXUK4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=PW+U5UkbV2nIDXX9kzHGS23qUpmbxvHK1bUWObrEmoRdHzie46hxAjXQnc1eBrC01guPYSDZBGjutBl/SRq2rgL9i+AluKf2X9BKtm7ZkBXM9dl8iX1a/u2QjpJ8MxJlS4HgrG+vKAsbq5N3CZAripElRWDBQxP4RLxNhhZ2PVC+D9/8ORH373di/SZq+nYzbEsv40gWxqij4EVc2oDWFEdZVC1QIvo8kVBtDjNKXB+rkCZZ70Sf7ZaN8nolYkit4raaD9pw+M8jWDJKH3GBBkppIKCizD51RygsD7rNzSMoUWu4SJoHSNahkJ++Kz9Bm2+sutPDviKaVLPX3qjldw== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=Or+9ysIy; dkim-atps=neutral; spf=pass (client-ip=2600:3c0a:e001:78e:0:1991:8:25; helo=sea.source.kernel.org; envelope-from=chleroy@kernel.org; receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=Or+9ysIy; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=2600:3c0a:e001:78e:0:1991:8:25; helo=sea.source.kernel.org; envelope-from=chleroy@kernel.org; receiver=lists.ozlabs.org) Received: from sea.source.kernel.org (sea.source.kernel.org [IPv6:2600:3c0a:e001:78e:0:1991:8:25]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4gvwrd0hQhz2xHK for ; Wed, 08 Jul 2026 08:29:36 +1000 (AEST) Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 578A540139; Tue, 7 Jul 2026 22:29:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4A18A1F00A3D; Tue, 7 Jul 2026 22:29:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783463370; bh=AZhsVbg+pGpdN+LoqPtk1yF43RbR2KSyGy50RUBXUK4=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=Or+9ysIydRJTTAmJSj0I5DWOTDMV8z+insajMqA+tXpscLj8XffwtjCWQIOwgLF9b kOBeHKlD397Jl1ihy9/LI+iHpVxPQ37I1vs+0VKKVH9XilyZKQZyUePhWmYjma+wJQ nyVUHvIeuyYNnUN49Gob8cVX12KgQGrpDMpyZAiBRatmbwJMjlmQrFonqul660gX7L W5Xc2cFsm7/za20peyS8gc3mrd+x6ouFura0Tf9D780Fxo1Wf5211n/xAg49jFLVB7 TtZkO2/iHKVbuMRdxnuloQgH2k1In8d0QKwO+OAIP4SqakzoKN6y98ncnoYPQsT3lp iKTqXb0M/Zo/w== Message-ID: <98d65de7-e5aa-4197-85bd-219eab01e572@kernel.org> Date: Wed, 8 Jul 2026 00:29:26 +0200 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: test_bitmap fails on ppc/ppc64 on kernels v7.1.3, v7.2-rc2 To: Erhard Furtner , "linuxppc-dev@lists.ozlabs.org" Cc: linux-kernel@vger.kernel.org References: Content-Language: fr-FR From: "Christophe Leroy (CS GROUP)" In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hi, Le 06/07/2026 à 21:27, Erhard Furtner a écrit : > Greetings! > > I don't get this on my x86_64 machines, but on ppc32 (PowerMac G4 DP) > and on ppc64 (Talos II, POWER9) running Gentoo Linux. This dmesg snippet > is from the G4: > > Total memory = 2048MB; using 4096kB for hash table > Activating Kernel Userspace Access Protection > Activating Kernel Userspace Execution Prevention > Linux version 7.2.0-rc2-PMacG4 (root@T1000) (gcc (Gentoo 15.3.0 p8) > 15.3.0, GNU ld (Gentoo 2.46.0 p1) 2.46.0) #1 SMP PREEMPT Mon Jul  6 > 20:22:47 CEST 2026 > > [...] > > test_bitmap: loaded. > test_bitmap: [lib/test_bitmap.c:397] bitmaps contents differ: expected > "1,3-4,9", got "1,3-4,9,65-71,73-79,81-87,89-95,97-99" > test_bitmap: parselist('0-2047:128/256'):    912 > test_bitmap: scnprintf("%*pbl", '0-32767'):    5977 > test_bitmap: test_bitmap_read_perf:        1191082 > test_bitmap: test_bitmap_write_perf:        1270153 > test_bitmap: failed 1 out of 208655 tests On QEMU (pmac32_defconfig) I get: test_bitmap: loaded. test_bitmap: parselist('0-2047:128/256'): 2200 test_bitmap: scnprintf("%*pbl", '0-32767'): 26440 test_bitmap: test_bitmap_read_perf: 1819760 test_bitmap: test_bitmap_write_perf: 18189840 test_bitmap: all 208655 tests passed On QEMU with your confirm I get: [ 1.162486] test_bitmap: loaded. [ 1.177069] test_bitmap: [lib/test_bitmap.c:397] bitmaps contents differ: expected "1,3-4,9", got "1,3-4,9,65-71,73-79,81-87,89-95,97-99" [ 1.180599] test_bitmap: parselist('0-2047:128/256'): 2920 [ 1.190105] test_bitmap: scnprintf("%*pbl", '0-32767'): 65560 [ 1.427378] test_bitmap: test_bitmap_read_perf: 9546321 [ 1.438769] test_bitmap: test_bitmap_write_perf: 9344481 [ 1.457679] test_bitmap: failed 1 out of 208655 tests So there is something with your config > > > Full dmesg available at request. Kernel .config attached. > > Regards, > Erhard