From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f69.google.com (mail-wm0-f69.google.com [74.125.82.69]) by kanga.kvack.org (Postfix) with ESMTP id D75956B025F for ; Wed, 27 Jul 2016 10:57:49 -0400 (EDT) Received: by mail-wm0-f69.google.com with SMTP id 1so1784566wmz.2 for ; Wed, 27 Jul 2016 07:57:49 -0700 (PDT) Received: from mail-wm0-f68.google.com (mail-wm0-f68.google.com. [74.125.82.68]) by mx.google.com with ESMTPS id ay2si7516073wjc.89.2016.07.27.07.57.48 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 27 Jul 2016 07:57:48 -0700 (PDT) Received: by mail-wm0-f68.google.com with SMTP id o80so6873211wme.0 for ; Wed, 27 Jul 2016 07:57:48 -0700 (PDT) Date: Wed, 27 Jul 2016 16:57:46 +0200 From: Michal Hocko Subject: Re: [PowerPC] Kernel OOPS while compiling LTP test suite on linus mainline Message-ID: <20160727145746.GA21891@dhcp22.suse.cz> References: <2a9abff6-7820-a95b-0de3-8e6723707cb6@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2a9abff6-7820-a95b-0de3-8e6723707cb6@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Abdul Haleem Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, aneesh.kumar@linux.vnet.ibm.com, mpe@ellerman.id.au, linux-mm@kvack.org [CC linux-mm] On Wed 27-07-16 16:45:35, Abdul Haleem wrote: > Hi, > > Kernel OOPS messages were seen while compiling linux test project (LTP) source on 4.7.0-rc5 mainline. > > Kernel config : pseries_le_defconfig > Machine Type : PowerVM LPAR > Machine hardware : LPAR uses 16 vCPUs, and 29G memory > > trace messages: > *15:34:57* [ 862.548866] Unable to handle kernel paging request for data at address 0x00000000 > *15:34:57* [ 862.548904] Faulting instruction address: 0xc000000000260900 > *15:34:57* [ 862.548911] Oops: Kernel access of bad area, sig: 11 [#1] > *15:34:57* [ 862.548917] SMP NR_CPUS=2048 NUMA pSeries > *15:34:57* [ 862.548924] Modules linked in: rtc_generic(E) pseries_rng(E) autofs4(E) > *15:34:57* [ 862.548938] CPU: 0 PID: 129 Comm: kswapd2 Tainted: G E 4.7.0-rc5-autotest #1 > *15:34:57* [ 862.548946] task: c0000007766a2600 ti: c000000776764000 task.ti: c000000776764000 > *15:34:57* [ 862.548953] NIP: c000000000260900 LR: c00000000026452c CTR: 0000000000000000 > *15:34:57* [ 862.548961] REGS: c000000776767830 TRAP: 0300 Tainted: G E (4.7.0-rc5-autotest) > *15:34:57* [ 862.548968] MSR: 800000010280b033 CR: 24000222 XER: 20000001 > *15:34:57* [ 862.548996] CFAR: c000000000008468 DAR: 0000000000000000 DSISR: 40000000 SOFTE: 0 > *15:34:57* GPR00: c00000000026452c c000000776767ab0 c0000000013ac100 c00000077ff54200 > *15:34:57* GPR04: 0000000000000000 c000000776767ba0 0000000000000001 c00000000151c100 > *15:34:57* GPR08: 0000000000000000 00000000000b4057 0000000080000000 c00000071664b7a0 > *15:34:57* GPR12: 0000000000000000 c00000000e800000 0000000000000001 f0000000015dc000 > *15:34:57* GPR16: c00000077ff54700 0000000000000000 0000000000000000 c00000077ff54700 > *15:34:57* GPR20: 0000000000000001 0000000000000100 0000000000000200 c00000077ff54200 > *15:34:57* GPR24: c000000776767ba0 0000000000000020 0000000000000000 0000000000000001 > *15:34:57* GPR28: 0000000000000010 0000000000000000 c000000776767ba0 f0000000015dc020 > *15:34:57* [ 862.549094] NIP [c000000000260900] move_active_pages_to_lru.isra.16+0xa0/0x380 > *15:34:57* [ 862.549102] LR [c00000000026452c] shrink_active_list+0x2fc/0x510 Could you map this to the kernel source line please? > *15:34:57* [ 862.549108] Call Trace: > *15:34:57* [ 862.549112] [c000000776767ab0] [f0000000015dc000] 0xf0000000015dc000 (unreliable) > *15:34:57* [ 862.549122] [c000000776767b60] [c00000000026452c] shrink_active_list+0x2fc/0x510 > *15:34:57* [ 862.549131] [c000000776767c50] [c0000000002665d4] kswapd+0x434/0xa70 > *15:34:57* [ 862.549139] [c000000776767d80] [c0000000000f1b50] kthread+0x110/0x130 > *15:34:57* [ 862.549148] [c000000776767e30] [c0000000000095f0] ret_from_kernel_thread+0x5c/0x6c > *15:34:57* [ 862.549155] Instruction dump: > *15:34:57* [ 862.549161] 60000000 3b200020 3a800001 7b7c26e4 3aa00100 3ac00200 3a400000 3a770500 > *15:34:57* [ 862.549174] 3a200000 60000000 60000000 60420000 7fbd4840 419e01b8 ebfd0008 > *15:34:57* [ 862.549193] ---[ end trace fcc50906d9164c56 ]--- > *15:34:57* [ 862.550562] > *15:35:18* [ 883.551577] INFO: rcu_sched self-detected stall on CPU > *15:35:18* [ 883.551578] INFO: rcu_sched self-detected stall on CPU > *15:35:18* [ 883.551588] 2-...: (5249 ticks this GP) idle=cc5/140000000000001/0 softirq=50260/50260 fqs=5249 > *15:35:18* [ 883.551591] (t=5250 jiffies g=48365 c=48364 q=182) > > Regard's > Abdul -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org