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Violators will be prosecuted; Mon, 9 Apr 2018 18:11:01 +0100 Received: from d06av24.portsmouth.uk.ibm.com (d06av24.portsmouth.uk.ibm.com [9.149.105.60]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w39HB1N115794438; Mon, 9 Apr 2018 17:11:01 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 324564203F; Mon, 9 Apr 2018 18:02:46 +0100 (BST) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B096E42045; Mon, 9 Apr 2018 18:02:45 +0100 (BST) Received: from icon-9-164-148-163.megacenter.de.ibm.com (unknown [9.164.148.163]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Mon, 9 Apr 2018 18:02:45 +0100 (BST) Date: Mon, 9 Apr 2018 19:11:00 +0200 (CEST) From: Sebastian Ott X-X-Sender: sebott@schleppi To: Linus Torvalds cc: Kees Cook , Sebastian Ott , LKML , Heiko Carstens , Martin Uecker , Ingo Molnar , Miguel Ojeda Subject: Re: [bisected] 3c8ba0d61d04ced9f8d9ff93977995a9e4e96e91 oopses on s390 In-Reply-To: References: User-Agent: Alpine 2.21 (LFD 202 2017-01-01) Organization: =?ISO-8859-15?Q?=22IBM_Deutschland_Research_&_Development_GmbH?= =?ISO-8859-15?Q?_=2F_Vorsitzende_des_Aufsichtsrats=3A_Martina?= =?ISO-8859-15?Q?_Koederitz_Gesch=E4ftsf=FChrung=3A_Dirk_Wittkopp?= =?ISO-8859-15?Q?_Sitz_der_Gesellschaft=3A_B=F6blingen_=2F_Reg?= =?ISO-8859-15?Q?istergericht=3A_Amtsgericht_Stuttgart=2C_HRB_2432?= =?ISO-8859-15?Q?94=22?= MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-TM-AS-GCONF: 00 x-cbid: 18040917-0040-0000-0000-0000044B741A X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18040917-0041-0000-0000-000020EF9981 Message-Id: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-04-09_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=3 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1804090175 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 9 Apr 2018, Linus Torvalds wrote: > On Mon, Apr 9, 2018 at 9:18 AM, Sebastian Ott wrote: > > > > Both of the following return 0 on my machine: > > + pr_warn("%u\n", min_not_zero(100, 1000)); > > + pr_warn("%u\n", min_not_zero(1000, 100)); > > Oooh. > > [ Raises hand, and says "I know, I know, pick me, pick me" ] > > min_not_zero() hasinternal variables "__x" and "__y". > > And "__cmp_once()" has internal variables "__x" and "__y". Argh....so obvious now :-) When I change these it works. Sebastian