From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161724AbdEYKyp (ORCPT ); Thu, 25 May 2017 06:54:45 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:37663 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756251AbdEYKyl (ORCPT ); Thu, 25 May 2017 06:54:41 -0400 Subject: Re: [PowerPC][next-20170324][kselftest] kernel Oops when running tm/tm-signal-context-chk-vsx From: Abdul Haleem To: Michael Ellerman Cc: Cyril Bur , sachinp , linuxppc-dev , linux-kernel Date: Thu, 25 May 2017 16:23:39 +0530 In-Reply-To: <87mva2a2yb.fsf@concordia.ellerman.id.au> References: <1490612559.8344.15.camel@abdul.in.ibm.com> <871sthbu12.fsf@concordia.ellerman.id.au> <1491209923.7788.9.camel@abdul.in.ibm.com> <1491210231.7788.12.camel@abdul.in.ibm.com> <1495521199.9020.13.camel@abdul.in.ibm.com> <87mva2a2yb.fsf@concordia.ellerman.id.au> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.10.4-0ubuntu1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-TM-AS-MML: disable x-cbid: 17052510-1617-0000-0000-000001D6D9E0 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17052510-1618-0000-0000-0000481B77E5 Message-Id: <1495709619.27765.11.camel@abdul.in.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-05-25_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000 definitions=main-1705250208 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2017-05-24 at 21:50 +1000, Michael Ellerman wrote: > Abdul Haleem writes: > > Hi Cyril, > > > > I see a similar trace, but with 'tm-signal-stack' test for mainline > > kernel 4.12.0-rc1 on PowerVM LPAR. > > I can't reproduce this here. It is not reproducible all the times. > > Can you please retest on rc2. With rc2, I see a similar call trace for the test 'tm_signal_context_chk_fpu' I tried running tm-signal-stack alone, but no luck. > > Also please include the exact version of the test (it prints it), and > what toolchain you built it with. test: tm_signal_context_chk_fpu tags: git_version:v4.12-rc2-62-g2426125 success: tm_signal_context_chk_fpu toolchain : gcc version 5.2.1 latest trace: [ 1953.024563] Bad kernel stack pointer 7fffe0a1ddc0 at c00000000000b660 [ 1953.024582] Oops: Bad kernel stack pointer, sig: 6 [#1] [ 1953.024585] SMP NR_CPUS=2048 [ 1953.024585] NUMA [ 1953.024587] pSeries [ 1953.024590] Modules linked in: rtc_generic vmx_crypto pseries_rng autofs4 [ 1953.024597] CPU: 14 PID: 27145 Comm: tm-signal-conte Not tainted 4.12.0-rc2-00062-g2426125-dirty #1 [ 1953.024601] task: c0000007699f8600 task.stack: c00000076a24c000 [ 1953.024603] NIP: c00000000000b660 LR: 0000000010001aac CTR: 0000000000000000 [ 1953.024608] REGS: c00000000ebdbd40 TRAP: 0700 Not tainted (4.12.0-rc2-00062-g2426125-dirty) [ 1953.024610] MSR: 8000000102a03031 [ 1953.024615] CR: 42000822 XER: 00000000 [ 1953.024618] CFAR: c00000000000b5b4 SOFTE: 0 GPR00: 0000000000000025 00007fffe0a1ddc0 0000000010028200 0000000000000000 GPR04: 000000000000000a 0000000000000000 0000000000000000 0000000000000000 GPR08: 00000000000000f8 0000000000000000 0000000000000000 0000000000000000 GPR12: 0000000000000000 00007fff8878c440 ffffffffffffffff fffffffffffffffe GPR16: fffffffffffffffd fffffffffffffffc fffffffffffffffb fffffffffffffffa GPR20: fffffffffffffff9 fffffffffffffff8 fffffffffffffff7 fffffffffffffff6 GPR24: fffffffffffffff5 fffffffffffffff4 fffffffffffffff3 fffffffffffffff2 GPR28: fffffffffffffff1 fffffffffffffff0 ffffffffffffffef ffffffffffffffee [ 1953.024652] NIP [c00000000000b660] fast_exception_return+0x90/0x98 [ 1953.024655] LR [0000000010001aac] 0x10001aac [ 1953.024657] Call Trace: [ 1953.024658] Instruction dump: [ 1953.024661] 7c40e3a6 e9a100d8 7c7b03a6 e84101a0 7c4ff120 e8410170 7c5a03a6 e8010070 [ 1953.024666] e8410080 e8610088 e8810090 e8210078 <4c000024> 48000000 e8610178 88ed02bb [ 1953.024671] ---[ end trace 3e1eeb3cfb1260c1 ]--- > > cheers > -- Regard's Abdul Haleem IBM Linux Technology Centre