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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D53ADC433EF for ; Mon, 7 Mar 2022 18:48:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239995AbiCGSs7 (ORCPT ); Mon, 7 Mar 2022 13:48:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49640 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234052AbiCGSs6 (ORCPT ); Mon, 7 Mar 2022 13:48:58 -0500 Received: from mail-pl1-x62d.google.com (mail-pl1-x62d.google.com [IPv6:2607:f8b0:4864:20::62d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3BE0F4706E for ; Mon, 7 Mar 2022 10:48:04 -0800 (PST) Received: by mail-pl1-x62d.google.com with SMTP id z11so14752287pla.7 for ; Mon, 07 Mar 2022 10:48:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=1VPetEhBFpYgmT7fkOGehkDdiG0qEpXsSfsQPV85SyQ=; b=HoACzcaZI8fjsqREe4rkRK101fOmdA7uTxdRymbk5iXWzBLqA5n3USQvrmjF0FJi3o lOcpZ39H1QI7XvHH2apjSAd5lD0aBFNBqoitpn7hsxFb+b45I88G7z7pcPdA3ylQHQoG 4qgrG6AUEcVbLCp+E8KzwKMGWzTznfl7bO9IwUWtAFmC+sVHsDeEHf5cYOoeV7qLLJD/ VuGKQDiQXoWkZmynHyq8Utzyy/dHrW6tK04/m7b//K5gjUTW9aJe+umJ05J4Ouli7B6/ ix2MmY+hwWgk5WQguBxmGMTAyWuo3P5FaDCY4r0IFbqU+aMdTKAHDD7QVeiy3ZXVguB2 pTFw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=1VPetEhBFpYgmT7fkOGehkDdiG0qEpXsSfsQPV85SyQ=; b=JYiQDOfqD/Nx5GJ0q8/fuiRcvaG5vIy396AdM58o3eFSicwy/XDgR+71XQw1mKa7Kq 0gGqGy42PmrdegAzWbnq4EclgCoTSgQNfK9K3a5t58qCoOmBy7hQe5wfwRsfFiZqeJEk EldpjV+mJbwX1vq/HZ7HzFConGUmpYddsElA+QTsNbKAkioQhuh6HY4u/tAda/Xk7DTe Q7NVTAXSK9G4QRWcGcEKeE90XKNmk/6COBx5txL5aKCEzG27Gjw0cuQRnR84Fl2HKMiL /0f4b9sMsyXOKqA1Js3ApzCV21bwhE7vwoQxrJlzJLBeMKkMaOy7V3Jl3ALA0mf0E5Rz acqQ== X-Gm-Message-State: AOAM532JrWUYxHV0a4M2Tndv4l9kDq/BWn/EclzD0Rgvhsr8QoRZOEgb mkhzNG15nFZd39npk9iVKuNKPZdQWXw= X-Google-Smtp-Source: ABdhPJyL650SlAZuc3wIti84mVOF7Xve/dVFuUtzc/KPk1ZQ+2XLZTxQyyQXbloMgCp/jZCILRNTyw== X-Received: by 2002:a17:90a:a591:b0:1bc:8015:4c9e with SMTP id b17-20020a17090aa59100b001bc80154c9emr371973pjq.154.1646678883312; Mon, 07 Mar 2022 10:48:03 -0800 (PST) Received: from sc2-hs2-b1628.eng.vmware.com ([66.170.99.1]) by smtp.gmail.com with ESMTPSA id c18-20020a056a000ad200b004f0f9696578sm18624749pfl.141.2022.03.07.10.48.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Mar 2022 10:48:02 -0800 (PST) From: Nadav Amit X-Google-Original-From: Nadav Amit To: linux-man@vger.kernel.org Cc: Alejandro Colomar , "Michael Kerrisk )" , Peter Xu , David Hildenbrand , Nadav Amit Subject: [PATCH 2/2] userfaultfd.2: fix userfaultfd_demo output Date: Mon, 7 Mar 2022 18:48:52 +0000 Message-Id: <20220307184852.20351-2-namit@vmware.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220307184852.20351-1-namit@vmware.com> References: <20220307184852.20351-1-namit@vmware.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org From: Nadav Amit A bug in the kernel caused in recent version a different output (masked offset). Update the output of the demo program accordingly. Signed-off-by: Nadav Amit --- man2/userfaultfd.2 | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/man2/userfaultfd.2 b/man2/userfaultfd.2 index cee7c01d2..779ff8817 100644 --- a/man2/userfaultfd.2 +++ b/man2/userfaultfd.2 @@ -648,7 +648,7 @@ Address returned by mmap() = 0x7fd30106c000 fault_handler_thread(): poll() returns: nready = 1; POLLIN = 1; POLLERR = 0 - UFFD_EVENT_PAGEFAULT event: flags = 0; address = 7fd30106c00f + UFFD_EVENT_PAGEFAULT event: flags = 0; address = 7fd30106c000 (uffdio_copy.copy returned 4096) Read address 0x7fd30106c00f in main(): A Read address 0x7fd30106c40f in main(): A @@ -657,7 +657,7 @@ Read address 0x7fd30106cc0f in main(): A fault_handler_thread(): poll() returns: nready = 1; POLLIN = 1; POLLERR = 0 - UFFD_EVENT_PAGEFAULT event: flags = 0; address = 7fd30106d00f + UFFD_EVENT_PAGEFAULT event: flags = 0; address = 7fd30106d000 (uffdio_copy.copy returned 4096) Read address 0x7fd30106d00f in main(): B Read address 0x7fd30106d40f in main(): B @@ -666,7 +666,7 @@ Read address 0x7fd30106dc0f in main(): B fault_handler_thread(): poll() returns: nready = 1; POLLIN = 1; POLLERR = 0 - UFFD_EVENT_PAGEFAULT event: flags = 0; address = 7fd30106e00f + UFFD_EVENT_PAGEFAULT event: flags = 0; address = 7fd30106e000 (uffdio_copy.copy returned 4096) Read address 0x7fd30106e00f in main(): C Read address 0x7fd30106e40f in main(): C -- 2.25.1