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=-11.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 47009C48BDF for ; Thu, 24 Jun 2021 07:34:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2F433613E7 for ; Thu, 24 Jun 2021 07:34:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231598AbhFXHgb (ORCPT ); Thu, 24 Jun 2021 03:36:31 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:47560 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231386AbhFXHga (ORCPT ); Thu, 24 Jun 2021 03:36:30 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1624520051; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=+3ri02JcikUDdV3zELjIjJ7m7hQSA/GaXJn3H8LLNW4=; b=dQN9bN5E6DnCQ+3n8KV9mDo9IyBVgnaxrnXbgjodpyyt+zP9/HS89D6eJZMBQOZq9w+tlW UdFoq/pABKcRld8A3yfQtX0VvgcakD4sdjjOSk+od1XG7G6f5rNnj2cAmkwGd6EW89muWQ UQX+adEpZNuZhqobmOwTaRHMuadnQFo= Received: from mail-ed1-f71.google.com (mail-ed1-f71.google.com [209.85.208.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-551-9GemgKdONXyE0uv7pzLhYA-1; Thu, 24 Jun 2021 03:34:09 -0400 X-MC-Unique: 9GemgKdONXyE0uv7pzLhYA-1 Received: by mail-ed1-f71.google.com with SMTP id ee28-20020a056402291cb0290394a9a0bfaeso2862936edb.6 for ; Thu, 24 Jun 2021 00:34:09 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=+3ri02JcikUDdV3zELjIjJ7m7hQSA/GaXJn3H8LLNW4=; b=ZFAzSRkXXMR0izfOozD+6r1gmNJ/0nWGdwMWM+Zl8ADJoU5vdgZWgpCpSQbCVAJc3D s+9hHruyZRsho/wFca0B7QB4FQnSQRVA3D+wf03hYylSCJ+sOJEHE7e+ivTKBldNhI+f 2OteiV2rQhxoKeSmX2FLnC/4Kn2OtWmsFqq6E+7/Ea5sKTIXUM/PzEHrY7+c2Va3R9j3 yfIgnZ2zDYC0wUpTdnNz4J+bWZCg+adZTKzU6Ygv77fLjhcQkwD47QLKlc2hfRv3FGi2 AISZmd1D9MTfow0xmxHoDrCnWpB+UeYRVcobkBfZsOHyRBEJnTRILSyJTGYnQYa7yoJe hOMw== X-Gm-Message-State: AOAM531aQL15qaGlMSnEMoQQn85GZ/rI1mnLNlekGewYT/qp1EGHcpZa zuppTnNFHGjTDCotXyhIDe9JXiS7dRc4prpgPpg1/O5n2puWI1NI+1nok4O0vcfktjtJm7Qcpee O5mSN2lpxsTzX9X1C86hmRNZ/ X-Received: by 2002:a17:906:c2cf:: with SMTP id ch15mr3910280ejb.517.1624520048496; Thu, 24 Jun 2021 00:34:08 -0700 (PDT) X-Google-Smtp-Source: ABdhPJy+LNv+c+e63ctYoEu2+THRGxPAm1rIotbbKIkGTW3lDLlJSyqxHRcZeEfzuNc1tYMo/AE2Qw== X-Received: by 2002:a17:906:c2cf:: with SMTP id ch15mr3910269ejb.517.1624520048331; Thu, 24 Jun 2021 00:34:08 -0700 (PDT) Received: from redhat.com ([77.124.79.210]) by smtp.gmail.com with ESMTPSA id l7sm1348002edc.78.2021.06.24.00.34.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Jun 2021 00:34:07 -0700 (PDT) Date: Thu, 24 Jun 2021 03:34:04 -0400 From: "Michael S. Tsirkin" To: Mike Christie Cc: linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, sgarzare@redhat.com, jasowang@redhat.com, stefanha@redhat.com, christian@brauner.io, akpm@linux-foundation.org, peterz@infradead.org, christian.brauner@ubuntu.com Subject: Re: [PATCH 0/3] kthread: pass in user and check RLIMIT_NPROC Message-ID: <20210624033350-mutt-send-email-mst@kernel.org> References: <20210624030804.4932-1-michael.christie@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210624030804.4932-1-michael.christie@oracle.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 23, 2021 at 10:08:01PM -0500, Mike Christie wrote: > The vhost driver will create a kthread when userspace does a > VHOST_SET_OWNER ioctl, but the thread is charged to the kthreadd thread. > We can then end up violating the userspace process's RLIMIT_NPROC. This > patchset allows drivers to pass in the user to charge/check. > > The patches were made over Linus's current tree. > Makes sense I guess. Acked-by: Michael S. Tsirkin