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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 5 Sep 2018 08:59:42 -0400 Received: from b01ledav003.gho.pok.ibm.com (b01ledav003.gho.pok.ibm.com [9.57.199.108]) by b01cxnp22036.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w85Cxfkc36700268 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 5 Sep 2018 12:59:41 GMT Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CE9CCB2068; Wed, 5 Sep 2018 08:58:28 -0400 (EDT) Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AE584B2065; Wed, 5 Sep 2018 08:58:28 -0400 (EDT) Received: from paulmck-ThinkPad-W541 (unknown [9.85.199.28]) by b01ledav003.gho.pok.ibm.com (Postfix) with ESMTP; Wed, 5 Sep 2018 08:58:28 -0400 (EDT) Received: by paulmck-ThinkPad-W541 (Postfix, from userid 1000) id 4A98516C29AE; Wed, 5 Sep 2018 05:59:41 -0700 (PDT) Date: Wed, 5 Sep 2018 05:59:41 -0700 From: "Paul E. McKenney" To: Borislav Petkov Cc: Steven Rostedt , x86-ml , Peter Zijlstra , lkml , joel@joelfernandes.org Subject: Re: 4.19-rc1: ./include/linux/rcupdate.h:631 rcu_read_lock() used illegally while idle! Reply-To: paulmck@linux.vnet.ibm.com References: <20180901173559.GC26871@zn.tnic> <20180901175442.GO4225@linux.vnet.ibm.com> <20180901184531.72ffb792@vmware.local.home> <20180902041639.GQ4225@linux.vnet.ibm.com> <20180904162611.6a120068@gandalf.local.home> <20180904205321.GQ4225@linux.vnet.ibm.com> <20180905082254.GA2237@zn.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180905082254.GA2237@zn.tnic> User-Agent: Mutt/1.5.21 (2010-09-15) X-TM-AS-GCONF: 00 x-cbid: 18090512-0068-0000-0000-00000335142B X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009676; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000266; SDB=6.01083893; UDB=6.00559395; IPR=6.00863893; MB=3.00023125; MTD=3.00000008; XFM=3.00000015; UTC=2018-09-05 12:59:43 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18090512-0069-0000-0000-000045A1395D Message-Id: <20180905125941.GE4225@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-09-05_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=837 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1809050137 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Sep 05, 2018 at 10:22:54AM +0200, Borislav Petkov wrote: > On Tue, Sep 04, 2018 at 01:53:21PM -0700, Paul E. McKenney wrote: > > I must defer to Borislav on this one. Assuming it has the desired > > effect, I am good with it. > > It did survive a bunch of reboots (the WARN would fire after boot > finishes, normally) so I guess we can run with it and see how it works > out in the next couple of weeks. > > Thanks guys! Woo-hoo!!! Thank you for testing this! Thanx, Paul