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 X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3D3FFC4363A for ; Wed, 28 Oct 2020 18:39:26 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7C02F24812 for ; Wed, 28 Oct 2020 18:39:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="HQVJwoSx" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7C02F24812 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 88CAB6B005C; Wed, 28 Oct 2020 14:39:24 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 83DE86B0062; Wed, 28 Oct 2020 14:39:24 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7361B6B0068; Wed, 28 Oct 2020 14:39:24 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0150.hostedemail.com [216.40.44.150]) by kanga.kvack.org (Postfix) with ESMTP id 45F836B005C for ; Wed, 28 Oct 2020 14:39:24 -0400 (EDT) Received: from smtpin14.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id DB4A58249980 for ; Wed, 28 Oct 2020 18:39:23 +0000 (UTC) X-FDA: 77422197006.14.rain88_441181827287 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin14.hostedemail.com (Postfix) with ESMTP id B85CD18229818 for ; Wed, 28 Oct 2020 18:39:23 +0000 (UTC) X-HE-Tag: rain88_441181827287 X-Filterd-Recvd-Size: 2421 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [63.128.21.124]) by imf21.hostedemail.com (Postfix) with ESMTP for ; Wed, 28 Oct 2020 18:39:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603910362; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type; bh=ztiaJAUXMZBdqI9JbYxKg/q9hZqDbd+G8L2IKBXW6WU=; b=HQVJwoSxT6totvpig8dgYcrlgWTyEHqwPjeY8Qwxu6Nli1L6LTvx1bAyZpgxAUUQW48zb+ xEv41x8pzN7IRuUA9lx3HHO47W108Nf03pjT0u2BacX37dHJ4BRkzUtqlZ52oojQ/bOP85 /8YE5JMgSwDNUdON8mXNrOQgQFglmjo= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-22-BzhDuj6KOWik3PfK-fzmXg-1; Wed, 28 Oct 2020 14:39:20 -0400 X-MC-Unique: BzhDuj6KOWik3PfK-fzmXg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4DCFF8014C1 for ; Wed, 28 Oct 2020 18:39:18 +0000 (UTC) Received: from tarantula.users.ipa.redhat.com (ovpn-115-106.rdu2.redhat.com [10.10.115.106]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E65A519D61 for ; Wed, 28 Oct 2020 18:39:17 +0000 (UTC) Date: Wed, 28 Oct 2020 13:39:15 -0500 From: Jeffrey Bastian To: linux-mm@kvack.org Subject: stress-ng procfs test triggers kernel bug in mm/usercopy.c Message-ID: <20201028183915.pn74yxbggmpdujge@tarantula.users.ipa.redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jbastian@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: I just opened a BZ for "kernel BUG at mm/usercopy.c:99!" while running the stress-ng procfs stressor on the 5.10.0-rc1 kernel: https://bugzilla.kernel.org/show_bug.cgi?id=209919 It's easily reproducible on x86_64 and arm64 (aarch64) systems. I'm testing on ppc64le and s390x next. -- Jeff Bastian Kernel QE - Hardware Enablement Red Hat