Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751399AbaLRPzc (ORCPT ); Thu, 18 Dec 2014 10:55:32 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:48991 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750968AbaLRPza (ORCPT ); Thu, 18 Dec 2014 10:55:30 -0500 Date: Thu, 18 Dec 2014 10:54:19 -0500 From: Chris Mason Subject: Re: frequent lockups in 3.18rc4 To: Dave Jones CC: Linus Torvalds , Mike Galbraith , Ingo Molnar , Peter Zijlstra , =?iso-8859-1?q?D=E2niel?= Fraga , Sasha Levin , "Paul E. McKenney" , Linux Kernel Mailing List , Suresh Siddha , Oleg Nesterov , Peter Anvin Message-ID: <1418918059.17358.6@mail.thefacebook.com> In-Reply-To: <20141218051327.GA31988@redhat.com> References: <20141213165915.GA12756@redhat.com> <20141213223616.GA22559@redhat.com> <20141214234654.GA396@redhat.com> <20141215055707.GA26225@redhat.com> <20141218051327.GA31988@redhat.com> X-Mailer: geary/0.8.2 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed X-Originating-IP: [192.168.16.4] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.13.68,1.0.33,0.0.0000 definitions=2014-12-18_06:2014-12-18,2014-12-18,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 kscore.is_bulkscore=0 kscore.compositescore=0 circleOfTrustscore=145.191669734525 compositescore=0.160988131301636 urlsuspect_oldscore=0.160988131301636 suspectscore=2 recipient_domain_to_sender_totalscore=0 phishscore=0 bulkscore=0 kscore.is_spamscore=0 recipient_to_sender_totalscore=0 recipient_domain_to_sender_domain_totalscore=1996008 rbsscore=0.160988131301636 spamscore=0 recipient_to_sender_domain_totalscore=7 urlsuspectscore=0.9 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1402240000 definitions=main-1412180152 X-FB-Internal: deliver Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Dec 18, 2014 at 12:13 AM, Dave Jones wrote: > On Mon, Dec 15, 2014 at 03:46:41PM -0800, Linus Torvalds wrote: > > On Mon, Dec 15, 2014 at 10:21 AM, Linus Torvalds > > wrote: > > > > > > So let's just fix it. Here's a completely untested patch. > > > > So after looking at this more, I'm actually really convinced that > this > > was a pretty nasty bug. > > > > I'm *not* convinced that it's necessarily *your* bug, but I still > > think it could be. > > Bah, I was getting all optimistic. > I came home this evening to a locked up machine. > Serial console had a *lot* more traces than usual though. > Full log below. The 12xxx.xxxxxx traces we seemed to recover from, > followed by silence for a while, before the real fun begins at > 157xx.xxxxxx CPU 2 seems to be the one making the least progress. I think he's calling fork and then trying to allocate a debug object for his hrtimer, eventually wandering into fill_pool from __debug_object_init(): static void fill_pool(void) { gfp_t gfp = GFP_ATOMIC | __GFP_NORETRY | __GFP_NOWARN; struct debug_obj *new; unsigned long flags; if (likely(obj_pool_free >= ODEBUG_POOL_MIN_LEVEL)) return; if (unlikely(!obj_cache)) return; while (obj_pool_free < ODEBUG_POOL_MIN_LEVEL) { new = kmem_cache_zalloc(obj_cache, gfp); if (!new) return; raw_spin_lock_irqsave(&pool_lock, flags); hlist_add_head(&new->node, &obj_pool); obj_pool_free++; raw_spin_unlock_irqrestore(&pool_lock, flags); } } It doesn't seem to be making progress out of __slab_alloc+0x52f/0x58f, but maybe the slab code is just a victim of being called in a while loop with GFP_ATOMIC set from a starvation prone loop. Can you please line up where 0x52f is in __slab_alloc? It might be fun to run with CONFIG_DEBUG_OBJECTS off...Linus' patch clearly helped, I think we're off in a different bug now. > [12669.359905] Code: 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 > 41 56 41 55 41 54 53 48 83 ec 48 44 8b 25 48 80 be 00 65 48 8b 1c 25 > 00 aa 00 00 <45> 85 e4 0f 84 ef 00 00 00 44 8b 1d e7 32 ab 01 49 89 > fe 41 89 > [12669.361354] INFO: NMI handler > (arch_trigger_all_cpu_backtrace_handler) took too long to run: 88.798 > msecs > [15739.449422] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! > [kworker/u16:3:14112] > [15739.450087] Modules linked in: bridge 8021q garp stp snd_seq_dummy > dlci tun fuse rfcomm hidp bnep af_key llc2 nfnetlink can_bcm > scsi_transport_iscsi can_raw sctp libcrc32c nfc caif_socket caif > af_802154 ieee802154 phonet af_rxrpc bluetooth can pppoe pppox > ppp_generic slhc irda crc_ccitt rds rose x25 atm netrom appletalk ipx > p8023 psnap p8022 llc ax25 usb_debug cfg80211 rfkill coretemp hwmon > x86_pkg_temp_thermal kvm_intel kvm crct10dif_pclmul crc32c_intel > ghash_clmulni_intel snd_hda_codec_hdmi snd_hda_codec_realtek > snd_hda_codec_generic microcode serio_raw pcspkr snd_hda_intel > snd_hda_controller snd_hda_codec snd_hwdep snd_seq snd_seq_device > snd_pcm e1000e ptp pps_core snd_timer snd soundcore shpchp nfsd > auth_rpcgss oid_registry nfs_acl lockd grace sunrpc > [15739.454475] CPU: 2 PID: 14112 Comm: kworker/u16:3 Tainted: G > L 3.18.0+ #106 > [15739.456686] Workqueue: khelper __call_usermodehelper > [15739.457473] task: ffff8801c95f0000 ti: ffff880227eac000 task.ti: > ffff880227eac000 > [15739.458231] RIP: 0010:[] [] > __slab_alloc+0x52f/0x58f > [15739.459015] RSP: 0018:ffff880227eaf8f8 EFLAGS: 00000246 > [15739.459794] RAX: 0000000000000002 RBX: ffff8802304cf5c8 RCX: > 00000000000002e0 > [15739.460570] RDX: ffff88024520d7e0 RSI: 0000000000000000 RDI: > ffff880244802000 > [15739.461343] RBP: ffff880227eaf9e8 R08: 0000000000000000 R09: > 0000000000000000 > [15739.462113] R10: 0000000000000092 R11: 0000000000000000 R12: > ffffffff810135bf > [15739.462885] R13: ffff880227eaf878 R14: 0000000100160015 R15: > ffffffff8138278d > [15739.463648] FS: 0000000000000000(0000) GS:ffff880245200000(0000) > knlGS:0000000000000000 > [15739.464431] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [15739.465203] CR2: 0000000000000008 CR3: 0000000225ab9000 CR4: > 00000000001407e0 > [15739.465985] DR0: 00007fbe591ef000 DR1: 0000000000000000 DR2: > 0000000000000000 > [15739.466766] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000600 > [15739.467542] Stack: > [15739.468308] 000000000000005c ffff880240f8d790 ffff880240f8d790 > ffff880240f8dd00 > [15739.469106] 0000000180230020 000000010000000f ffffffff8112ee12 > 0000000000000000 > [15739.469912] ffff8802453d7260 000000020023001f ffff880227eaf968 > ffffffff8138278d > [15739.470717] Call Trace: > [15739.471511] [] ? __delayacct_tsk_init+0x22/0x50 > [15739.472325] [] ? __debug_object_init+0x43d/0x450 > [15739.473138] [] ? set_track+0x70/0x140 > [15739.473947] [] ? init_object+0x3d/0x70 > [15739.474757] [] ? __debug_object_init+0x43d/0x450 > [15739.475571] [] kmem_cache_alloc+0x1cb/0x1f0 > [15739.476374] [] __debug_object_init+0x43d/0x450 > [15739.477174] [] debug_object_init+0x1b/0x20 > [15739.477983] [] hrtimer_init+0x25/0xb0 > [15739.478781] [] __sched_fork+0x99/0x230 > [15739.479590] [] sched_fork+0x29/0x200 > [15739.480387] [] copy_process.part.26+0x65c/0x1a40 > [15739.481184] [] ? local_clock+0x25/0x30 > [15739.481983] [] ? > __lock_acquire.isra.31+0x22c/0x9f0 > [15739.482797] [] ? call_helper+0x20/0x20 > [15739.483598] [] do_fork+0xe7/0x490 > [15739.484382] [] ? > __lock_acquire.isra.31+0x22c/0x9f0 > [15739.485160] [] ? process_one_work+0x178/0x550 > [15739.485922] [] kernel_thread+0x26/0x30 > [15739.486669] [] __call_usermodehelper+0x64/0x80 > [15739.487407] [] process_one_work+0x1fa/0x550 > [15739.488126] [] ? process_one_work+0x178/0x550 > [15739.488834] [] worker_thread+0x11b/0x490 > [15739.489529] [] ? process_one_work+0x550/0x550 > [15739.490197] [] kthread+0xf9/0x110 > [15739.490845] [] ? local_clock+0x25/0x30 > [15739.491474] [] ? > kthread_create_on_node+0x250/0x250 > [15739.492092] [] ret_from_fork+0x7c/0xb0 > [15739.492689] [] ? > kthread_create_on_node+0x250/0x250 > [15739.493288] Code: 00 02 00 00 49 c7 45 00 00 00 00 00 75 11 ff b5 > 78 ff ff ff 9d e8 7a 6d 98 ff 4c 89 e0 eb 0f e8 70 6e 98 ff ff b5 78 > ff ff ff 9d <4c> 89 e0 48 8b 55 c8 65 48 33 14 25 28 00 00 00 74 3c > e8 22 46 > [15739.494617] sending NMI to other CPUs: > [15739.495221] NMI backtrace for cpu 3 > [15739.495787] CPU: 3 PID: 1650 Comm: trinity-c76 Tainted: G > L 3.18.0+ #106 > [15739.497539] task: ffff8801adac4470 ti: ffff880180e04000 task.ti: > ffff880180e04000 > [15739.498153] RIP: 0010:[] [] > lock_acquire+0xb4/0x120 > [15739.498772] RSP: 0018:ffff880180e07dd8 EFLAGS: 00000246 > [15739.499382] RAX: ffff8801adac4470 RBX: 0000000000000246 RCX: > ffff8802455cff98 > [15739.499994] RDX: 00000000000006a0 RSI: 0000000000000000 RDI: > 0000000000000000 > [15739.500609] RBP: ffff880180e07e38 R08: 0000000000000000 R09: > 0000000000000000 > [15739.501224] R10: 0000000000000000 R11: 0000000000000000 R12: > 0000000000000000 > [15739.501829] R13: 0000000000000000 R14: 0000000000000002 R15: > 0000000000000000 > [15739.502422] FS: 00007f79977d8740(0000) GS:ffff880245400000(0000) > knlGS:0000000000000000 > [15739.503021] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [15739.503621] CR2: 0000000000000001 CR3: 00000001c9593000 CR4: > 00000000001407e0 > [15739.504217] DR0: 00007fbe591ef000 DR1: 0000000000000000 DR2: > 0000000000000000 > [15739.504812] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000600 > [15739.505403] Stack: > [15739.505988] ffffffff8107a8e9 0000000000000000 ffff8801adac4470 > 0000000000000246 > [15739.506603] 0000000127cc4da0 ffffffff81c0a098 ffff8801adac4470 > ffffffff81c0a080 > [15739.507220] ffffffff81c0a098 ffff8801adac4470 ffff8801adac4470 > ffff8801adac4470 > [15739.507839] Call Trace: > [15739.508448] [] ? do_wait+0xd9/0x280 > [15739.509064] [] _raw_read_lock+0x41/0x80 > [15739.509678] [] ? do_wait+0xd9/0x280 > [15739.510293] [] do_wait+0xd9/0x280 > [15739.510907] [] SyS_wait4+0x80/0x110 > [15739.511518] [] ? task_stopped_code+0x60/0x60 > [15739.512130] [] tracesys_phase2+0xd4/0xd9 > [15739.512739] Code: d8 49 c1 e8 09 48 89 04 24 49 83 f0 01 41 83 e0 > 01 e8 01 ef ff ff 65 48 8b 04 25 00 aa 00 00 c7 80 6c 07 00 00 00 00 > 00 00 53 9d <48> 83 c4 38 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 44 > 00 00 65 > [15739.514121] NMI backtrace for cpu 1 > [15739.514769] CPU: 1 PID: 2849 Comm: trinity-c95 Tainted: G > L 3.18.0+ #106 > [15739.516771] task: ffff880096b4c470 ti: ffff880153a4c000 task.ti: > ffff880153a4c000 > [15739.517467] RIP: 0010:[] [] > find_pid_ns+0x39/0x90 > [15739.518177] RSP: 0018:ffff880153a4fe78 EFLAGS: 00000207 > [15739.518884] RAX: ffff88024e517120 RBX: 0000000000000d7f RCX: > 0000000000000034 > [15739.519599] RDX: ffff880094be6500 RSI: ffffffff81c486c0 RDI: > 0000000000000d7f > [15739.520316] RBP: ffff880153a4fe78 R08: 0000000000000000 R09: > 0000000000000000 > [15739.521036] R10: 0000000000000000 R11: 0000000000000000 R12: > 0000000000000000 > [15739.521752] R13: ffff880096b4c470 R14: 0000000000000000 R15: > 0000000000000000 > [15739.522464] FS: 00007f79977d8740(0000) GS:ffff880245000000(0000) > knlGS:0000000000000000 > [15739.523181] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [15739.523882] CR2: 00007f7996f24220 CR3: 00000002251b4000 CR4: > 00000000001407e0 > [15739.524580] DR0: 00007fbe591ef000 DR1: 0000000000000000 DR2: > 0000000000000000 > [15739.525269] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000600 > [15739.525957] Stack: > [15739.526632] ffff880153a4fe88 ffffffff8109627f ffff880153a4ff68 > ffffffff81086e2a > [15739.527319] ffffffff81086df8 0000000000000000 ffff880096b4c840 > 0000000000000000 > [15739.527992] ffff880100000000 000003e800000b21 ffff880094be64c0 > 00007fff123fb870 > [15739.528656] Call Trace: > [15739.529301] [] find_vpid+0x2f/0x50 > [15739.529947] [] SYSC_kill+0xba/0x240 > [15739.530587] [] ? SYSC_kill+0x88/0x240 > [15739[15763.435537] NMI watchdog: BUG: soft lockup - CPU#2 stuck for > 22s! [kworker/u16:3:14112] > [15763.436252] Modules linked in: bridge 8021q garp stp snd_seq_dummy > dlci tun fuse rfcomm hidp bnep af_key llc2 nfnetlink can_bcm > scsi_transport_iscsi can_raw sctp libcrc32c nfc caif_socket caif > af_802154 ieee802154 phonet af_rxrpc bluetooth can pppoe pppox > ppp_generic slhc irda crc_ccitt rds rose x25 atm netrom appletalk ipx > p8023 psnap p8022 llc ax25 usb_debug cfg80211 rfkill coretemp hwmon > x86_pkg_temp_thermal kvm_intel kvm crct10dif_pclmul crc32c_intel > ghash_clmulni_intel snd_hda_codec_hdmi snd_hda_codec_realtek > snd_hda_codec_generic microcode serio_raw pcspkr snd_hda_intel > snd_hda_controller snd_hda_codec snd_hwdep snd_seq snd_seq_device > snd_pcm e1000e ptp pps_core snd_timer snd soundcore shpchp nfsd > auth_rpcgss oid_registry nfs_acl lockd grace sunrpc > [15763.441025] CPU: 2 PID: 14112 Comm: kworker/u16:3 Tainted: G > L 3.18.0+ #106 > [15763.443320] Workqueue: khelper __call_usermodehelper > [15763.444090] task: ffff8801c95f0000 ti: ffff880227eac000 task.ti: > ffff880227eac000 > [15763.444861] RIP: 0010:[] [] > __slab_alloc+0x52f/0x58f > [15763.445654] RSP: 0018:ffff880227eaf8f8 EFLAGS: 00000246 > [15763.446422] RAX: 0000000000000002 RBX: ffff8802304cf5c8 RCX: > 00000000000002e0 > [15763.447201] RDX: ffff88024520d7e0 RSI: 0000000000000000 RDI: > ffff880244802000 > [15763.447985] RBP: ffff880227eaf9e8 R08: 0000000000000000 R09: > 0000000000000000 > [15763.448764] R10: 0000000000000092 R11: 0000000000000000 R12: > ffffffff810135bf > [15763.449545] R13: ffff880227eaf878 R14: 0000000100160015 R15: > ffffffff8138278d > [15763.450319] FS: 0000000000000000(0000) GS:ffff880245200000(0000) > knlGS:0000000000000000 > [15763.451100] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [15763.451876] CR2: 0000000000000008 CR3: 0000000225ab9000 CR4: > 00000000001407e0 > [15763.452662] DR0: 00007fbe591ef000 DR1: 0000000000000000 DR2: > 0000000000000000 > [15763.453451] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000600 > [15763.454230] Stack: > [15763.455003] 000000000000005c ffff880240f8d790 ffff880240f8d790 > ffff880240f8dd00 > [15763.455818] 0000000180230020 000000010000000f ffffffff8112ee12 > 0000000000000000 > [15763.456608] ffff8802453d7260 000000020023001f ffff880227eaf968 > ffffffff8138278d > [15763.457393] Call Trace: > [15763.458166] [] ? __delayacct_tsk_init+0x22/0x50 > [15763.458960] [] ? __debug_object_init+0x43d/0x450 > [15763.459753] [] ? set_track+0x70/0x140 > [15763.460544] [] ? init_object+0x3d/0x70 > [15763.461338] [] ? __debug_object_init+0x43d/0x450 > [15763.462127] [] kmem_cache_alloc+0x1cb/0x1f0 > [15763.462921] [] __debug_object_init+0x43d/0x450 > [15763.463707] [] debug_object_init+0x1b/0x20 > [15763.464503] [] hrtimer_init+0x25/0xb0 > [15763.465294] [] __sched_fork+0x99/0x230 > [15763.466086] [] sched_fork+0x29/0x200 > [15763.466875] [] copy_process.part.26+0x65c/0x1a40 > [15763.467664] [] ? local_clock+0x25/0x30 > [15763.468458] [] ? > __lock_acquire.isra.31+0x22c/0x9f0 > [15763.469251] [] ? call_helper+0x20/0x20 > [15763.470041] [] do_fork+0xe7/0x490 > [15763.470828] [] ? > __lock_acquire.isra.31+0x22c/0x9f0 > [15763.471603] [] ? process_one_work+0x178/0x550 > [15763.472371] [] kernel_thread+0x26/0x30 > [15763.473120] [] __call_usermodehelper+0x64/0x80 > [15763.473854] [] process_one_work+0x1fa/0x550 > [15763.474578] [] ? process_one_work+0x178/0x550 > [15763.475287] [] worker_thread+0x11b/0x490 > [15763.475975] [] ? process_one_work+0x550/0x550 > [15763.476640] [] kthread+0xf9/0x110 > [15763.477285] [] ? local_clock+0x25/0x30 > [15763.477915] [] ? > kthread_create_on_node+0x250/0x250 > [15763.478532] [] ret_from_fork+0x7c/0xb0 > [15763.479131] [] ? > kthread_create_on_node+0x250/0x250 > [15763.479741] Code: 00 02 00 00 49 c7 45 00 00 00 00 00 75 11 ff b5 > 78 ff ff ff 9d e8 7a 6d 98 ff 4c 89 e0 eb 0f e8 70 6e 98 ff ff b5 78 > ff ff ff 9d <4c> 89 e0 48 8b 55 c8 65 48 33 14 25 28 00 00 00 74 3c > e8 22 46 > [15763.481087] sending NMI to other CPUs: > [15763.481693] NMI backtrace for cpu 3 > [15763.482255] CPU: 3 PID: 1650 Comm: trinity-c76 Tainted: G > L 3.18.0+ #106 > [15763.484005] task: ffff8801adac4470 ti: ffff880180e04000 task.ti: > ffff880180e04000 > [15763.484618] RIP: 0010:[] [] > lock_acquired+0x45/0x370 > [15763.485234] RSP: 0018:ffff880180e07db8 EFLAGS: 00000046 > [15763.485841] RAX: 0000000000000001 RBX: ffff880227cc4da0 RCX: > 0000000000000001 > [15763.486453] RDX: 000000000000dbdb RSI: ffffffff810bcc8d RDI: > ffff880227cc4db8 > [15763.487068] RBP: ffff880180e07df8 R08: 0000000000000000 R09: > 0000000000000001 > [15763.487687] R10: 0000000000000000 R11: 0000000000000000 R12: > ffff8801adac4470 > [15763.488303] R13: ffff880227cc4db8 R14: 0000000000000046 R15: > ffff8801adac4460 > [15763.488909] FS: 00007f79977d8740(0000) GS:ffff880245400000(0000) > knlGS:0000000000000000 > [15763.489522] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [15763.490133] CR2: 0000000000000001 CR3: 00000001c9593000 CR4: > 00000000001407e0 > [15763.490747] DR0: 00007fbe591ef000 DR1: 0000000000000000 DR2: > 0000000000000000 > [15763.491356] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000600 > [15763.491964] Stack: > [15763.492564] 0000000100000002 ffffffff810bcc8d ffff880180e07dd8 > ffff880227cc4da0 > [15763.493194] ffff880227cc4db8 0000000000000292 ffff8801adac4470 > ffff8801adac4460 > [15763.493828] ffff880180e07e38 ffffffff817cf0d5 ffffffff810bcc8d > 0000000000000296 > [15763.494464] Call Trace: > [15763.495088] [] ? remove_wait_queue+0x1d/0x40 > [15763.495726] [] _raw_spin_lock_irqsave+0x75/0x90 > [15763.496364] [] ? remove_wait_queue+0x1d/0x40 > [15763.497005] [] remove_wait_queue+0x1d/0x40 > [15763.497645] [] do_wait+0x14b/0x280 > [15763.498283] [] SyS_wait4+0x80/0x110 > [15763.498917] [] ? task_stopped_code+0x60/0x60 > [15763.499551] [] tracesys_phase2+0xd4/0xd9 > [15763.500183] Code: b8 00 45 85 c9 0f 84 d8 00 00 00 65 4c 8b 24 25 > 00 aa 00 00 45 8b 84 24 6c 07 00 00 45 85 c0 0f 85 be 00 00 00 49 89 > fd 9c 41 5e 8b 35 1c 3a ab 01 41 c7 84 24 6c 07 00 00 01 00 00 > 00 41 8b > [15763.501611] NMI backtrace for cpu 1 > [15763.502274] CPU: 1 PID: 3298 Comm: trinity-c183 Tainted: G > L 3.18.0+ #106 > [15763.504345] task: ffff880227de16d0 ti: ffff880071060000 task.ti: > ffff880071060000 > [15763.505065] RIP: 0033:[<000000336eebc2fc>] [<000000336eebc2fc>] > 0x336eebc2fc > [15763.505796] RSP: 002b:00007fff123fb868 EFLAGS: 00000246 > [15763.506522] RAX: 0000000000000000 RBX: 0000000000000d7b RCX: > ffffffffffffffff > [15763.507257] RDX: 000000000000000b RSI: 00007fff123fb870 RDI: > 0000000000000d7b > [15763.507994] RBP: 0000000000000000 R08: 00007f79977d8740 R09: > 0000000000000000 > [15763.508729] R10: 0000000000000000 R11: 0000000000000246 R12: > 00007f7996cf6000 > [15763.509460] R13: 00007f7996cf6068 R14: 0000000000000000 R15: > 0000000000000000 > [15763.510188] FS: 00007f79977d8740(0000) GS:ffff880245000000(0000) > knlGS:0000000000000000 > [15763.510908] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [15763.511612] CR2: 00007f7996f24220 CR3: 000000009a646000 CR4: > 00000000001407e0 > [15763.512319] DR0: 00007fbe591ef000 DR1: 0000000000000000 DR2: > 0000000000000000 > [15763.513027] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000600 > [15763.513727] > [15763.514403] NMI backtrace for cpu 0 > [15763.515067] CPU: 0 PID: 1876 Comm: trinity-c189 Tainted: G > L 3.18.0+ #106 > [15763.517087] task: ffff880096b4ada0 ti: ffff8802253d0000 task.ti: > ffff8802253d0000 > [15763.517776] RIP: 0010:[<[15779.306349] INFO: rcu_sched detected > stalls on CPUs/tasks: > [15779.307024] (detected by 0, t=6002 jiffies, g=481360, c=481359, > q=0) > [15779.307662] INFO: Stall ended before state dump start > [15787.421647] NMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s! > [kworker/u16:3:14112] > [15787.422333] Modules linked in: bridge 8021q garp stp snd_seq_dummy > dlci tun fuse rfcomm hidp bnep af_key llc2 nfnetlink can_bcm > scsi_transport_iscsi can_raw sctp libcrc32c nfc caif_socket caif > af_802154 ieee802154 phonet af_rxrpc bluetooth can pppoe pppox > ppp_generic slhc irda crc_ccitt rds rose x25 atm netrom appletalk ipx > p8023 psnap p8022 llc ax25 usb_debug cfg80211 rfkill coretemp hwmon > x86_pkg_temp_thermal kvm_intel kvm crct10dif_pclmul crc32c_intel > ghash_clmulni_intel snd_hda_codec_hdmi snd_hda_codec_realtek > snd_hda_codec_generic microcode serio_raw pcspkr snd_hda_intel > snd_hda_controller snd_hda_codec snd_hwdep snd_seq snd_seq_device > snd_pcm e1000e ptp pps_core snd_timer snd soundcore shpchp nfsd > auth_rpcgss oid_registry nfs_acl lockd grace sunrpc > [15787.426946] CPU: 2 PID: 14112 Comm: kworker/u16:3 Tainted: G > L 3.18.0+ #106 > [15787.429181] Workqueue: khelper __call_usermodehelper > [15787.429945] task: ffff8801c95f0000 ti: ffff880227eac000 task.ti: > ffff880227eac000 > [15787.430719] RIP: 0010:[] [] > __slab_alloc+0x52f/0x58f > [15787.431507] RSP: 0018:ffff880227eaf8f8 EFLAGS: 00000246 > [15787.432297] RAX: 0000000000000002 RBX: ffff8802304cf5c8 RCX: > 00000000000002e0 > [15787.433094] RDX: ffff88024520d7e0 RSI: 0000000000000000 RDI: > ffff880244802000 > [15787.433886] RBP: ffff880227eaf9e8 R08: 0000000000000000 R09: > 0000000000000000 > [15787.434671] R10: 0000000000000092 R11: 0000000000000000 R12: > ffffffff810135bf > [15787.435452] R13: ffff880227eaf878 R14: 0000000100160015 R15: > ffffffff8138278d > [15787.436234] FS: 0000000000000000(0000) GS:ffff880245200000(0000) > knlGS:0000000000000000 > [15787.437028] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [15787.437816] CR2: 0000000000000008 CR3: 0000000225ab9000 CR4: > 00000000001407e0 > [15787.438605] DR0: 00007fbe591ef000 DR1: 0000000000000000 DR2: > 0000000000000000 > [15787.439400] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000600 > [15787.440183] Stack: > [15787.440959] 000000000000005c ffff880240f8d790 ffff880240f8d790 > ffff880240f8dd00 > [15787.441792] 0000000180230020 000000010000000f ffffffff8112ee12 > 0000000000000000 > [15787.442615] ffff8802453d7260 000000020023001f ffff880227eaf968 > ffffffff8138278d > [15787.443422] Call Trace: > [15787.444217] [] ? __delayacct_tsk_init+0x22/0x50 > [15787.445027] [] ? __debug_object_init+0x43d/0x450 > [15787.445833] [] ? set_track+0x70/0x140 > [15787.446647] [] ? init_object+0x3d/0x70 > [15787.447449] [] ? __debug_object_init+0x43d/0x450 > [15787.448258] [] kmem_cache_alloc+0x1cb/0x1f0 > [15787.449067] [] __debug_object_init+0x43d/0x450 > [15787.449879] [] debug_object_init+0x1b/0x20 > [15787.450688] [] hrtimer_init+0x25/0xb0 > [15787.451497] [] __sched_fork+0x99/0x230 > [15787.452307] [] sched_fork+0x29/0x200 > [15787.453122] [] copy_process.part.26+0x65c/0x1a40 > [15787.453928] [] ? local_clock+0x25/0x30 > [15787.454733] [] ? > __lock_acquire.isra.31+0x22c/0x9f0 > [15787.455524] [] ? call_helper+0x20/0x20 > [15787.456299] [] do_fork+0xe7/0x490 > [15787.457062] [] ? > __lock_acquire.isra.31+0x22c/0x9f0 > [15787.457826] [] ? process_one_work+0x178/0x550 > [15787.458587] [] kernel_thread+0x26/0x30 > [15787.459336] [] __call_usermodehelper+0x64/0x80 > [15787.460078] [] process_one_work+0x1fa/0x550 > [15787.460794] [] ? process_one_work+0x178/0x550 > [15787.461495] [] worker_thread+0x11b/0x490 > [15787.462182] [] ? process_one_work+0x550/0x550 > [15787.462850] [] kthread+0xf9/0x110 > [15787.463496] [] ? local_clock+0x25/0x30 > [15787.464124] [] ? > kthread_create_on_node+0x250/0x250 > [15787.464742] [] ret_from_fork+0x7c/0xb0 > [15787.465341] [] ? > kthread_create_on_node+0x250/0x250 > [15787.465947] Code: 00 02 00 00 49 c7 45 00 00 00 00 00 75 11 ff b5 > 78 ff ff ff 9d e8 7a 6d 98 ff 4c 89 e0 eb 0f e8 70 6e 98 ff ff b5 78 > ff ff ff 9d <4c> 89 e0 48 8b 55 c8 65 48 33 14 25 28 00 00 00 74 3c > e8 22 46 > [15787.467291] sending NMI to other CPUs: > [15787.467904] NMI backtrace for cpu 3 > [15787.468463] CPU: 3 PID: 1650 Comm: trinity-c76 Tainted: G > L 3.18.0+ #106 > [15787.470211] task: ffff8801adac4470 ti: ffff880180e04000 task.ti: > ffff880180e04000 > [15787.470824] RIP: 0033:[<000000336eebc2fc>] [<000000336eebc2fc>] > 0x336eebc2fc > [15787.471440] RSP: 002b:00007fff123fb868 EFLAGS: 00000246 > [15787.472043] RAX: 0000000000000000 RBX: 0000000000000d7e RCX: > ffffffffffffffff > [15787.472652] RDX: 000000000000000b RSI: 00007fff123fb870 RDI: > 0000000000000d7e > [15787.473259] RBP: 0000000000000000 R08: 00007f79977d8740 R09: > 0000000000000000 > [15787.473868] R10: 0000000000000000 R11: 0000000000000246 R12: > 00007f7997265000 > [15787.474468] R13: 00007f7997265068 R14: 0000000000000000 R15: > 0000000000000000 > [15787.475063] FS: 00007f79977d8740(0000) GS:ffff880245400000(0000) > knlGS:0000000000000000 > [15787.475660] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [15787.476254] CR2: 0000000000000001 CR3: 00000001c9593000 CR4: > 00000000001407e0 > [15787.476851] DR0: 00007fbe591ef000 DR1: 0000000000000000 DR2: > 0000000000000000 > [15787.477442] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000600 > [15787.478032] > [15787.478615] NMI backtrace for cpu 1 > [15787.479205] CPU: 1 PID: 2849 Comm: trinity-c95 Tainted: G > L 3.18.0+ #106 > [15787.481052] task: ffff880096b4c470 ti: ffff880153a4c000 task.ti: > ffff880153a4c000 > [15787.481696] RIP: 0010:[] [] > system_call+0x0/0x3 > [15787.482351] RSP: 0018:00007fff123fb868 EFLAGS: 00000046 > [15787.483007] RAX: 000000000000003d RBX: 0000000000000d7f RCX: > 000000336eebc2fc > [15787.483674] RDX: 000000000000000b RSI: 00007fff123fb870 RDI: > 0000000000000d7f > [15787.484338] RBP: 0000000000000000 R08: 00007f79977d8740 R09: > 0000000000000000 > [15787.485000] R10: 0000000000000000 R11: 0000000000000246 R12: > 00007f799716e000 > [15787.485658] R13: 00007f799716e068 R14: 0000000000000000 R15: > 0000000000000000 > [15787.486314] FS: 00007f79977d8740(0000) GS:ffff880245000000(0000) > knlGS:0000000000000000 > [15787.486979] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [15787.487641] CR2: 00007f7996f24220 CR3: 00000002251b4000 CR4: > 00000000001407e0 > [15787.488311] DR0: 00007fbe591ef000 DR1: 0000000000000000 DR2: > 0000000000000000 > [15787.488982] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000600 > [15787.489650] Stack: > [15787.490312] 000000000041401b 00007f79976944e8 00007f799716e000 > 0000000000000001 > [15787.490999] 00007f799716e07c 00007f799716e000 0000000000000000 > 00007f799716e07c > [15787.491690] 0000000000416c03 00000000000066b2 0000000000000155 > 00000000cccccccd > [15787.492383] Call Trace: > [15787.493063] > [15787.493070] Code: 8b 3c 24 4c 8b 74 24 08 4c 8b 6c 24 10 4c 8b 64 > 24 18 48 8b 6c 24 20 48 8b 5c 24 28 48 83 c4 30 e9 74 02 00 00 66 0f > 1f 44 00 00 <0f> 01 f8 65 48 89 24 25 80 a0 00 00 65 48 8b 24 25 08 > aa 00 00 > [15787.495270] NMI backtrace for cpu 0 > [15787.495987] CPU: 0 PID: 1876 Comm: trinity-c189 Tainted: G > L 3.18.0+ #106 > [15787.498136] task: ffff880096b4ada0 ti: ffff8802253d0000 task.ti: > ffff8802253d0000 > [15787.498870] RIP: 0010:[] [] > do_raw_spin_trylock+0x8/0x50 > [15787.499618] RSP: 0018:ffff880244e03d00 EFLAGS: 00000092 > [15787.500344] RAX: ffff880096b4ada0 RBX: ffff880240c51578 RCX: > ffff880244fcff98 > [15787.501064] RDX: 0000000000004a4a RSI: 0000000000000018 RDI: > ffff880240c51578 > [15787.501780] RBP: ffff880244e03d38 R08: 0000000000000001 R09: > 0000000000000000 > [15787.502487] R10: 0000000000000000 R11: 0000000000000000 R12: > ffff880240c51590 > [15787.503190] R13: 0000000000000092 R14: ff[15811.407761] NMI > watchdog: BUG: soft lockup - CPU#2 stuck for 22s! > [kworker/u16:3:14112] > [15811.408334] Modules linked in: bridge 8021q garp stp snd_seq_dummy > dlci tun fuse rfcomm hidp bnep af_key llc2 nfnetlink can_bcm > scsi_transport_iscsi can_raw sctp libcrc32c nfc caif_socket caif > af_802154 ieee802154 phonet af_rxrpc bluetooth can pppoe pppox > ppp_generic slhc irda crc_ccitt rds rose x25 atm netrom appletalk ipx > p8023 psnap p8022 llc ax25 usb_debug cfg80211 rfkill coretemp hwmon > x86_pkg_temp_thermal kvm_intel kvm crct10dif_pclmul crc32c_intel > ghash_clmulni_intel snd_hda_codec_hdmi snd_hda_codec_realtek > snd_hda_codec_generic microcode serio_raw pcspkr snd_hda_intel > snd_hda_controller snd_hda_codec snd_hwdep snd_seq snd_seq_device > snd_pcm e1000e ptp pps_core snd_timer snd soundcore shpchp nfsd > auth_rpcgss oid_registry nfs_acl lockd grace sunrpc > [15811.412296] CPU: 2 PID: 14112 Comm: kworker/u16:3 Tainted: G > L 3.18.0+ #106 > [15811.414324] Workqueue: khelper __call_usermodehelper > [15811.415025] task: ffff8801c95f0000 ti: ffff880227eac000 task.ti: > ffff880227eac000 > [15811.415733] RIP: 0010:[] [] > __slab_alloc+0x52f/0x58f > [15811.416455] RSP: 0018:ffff880227eaf8f8 EFLAGS: 00000246 > [15811.417171] RAX: 0000000000000002 RBX: ffff8802304cf5c8 RCX: > 00000000000002e0 > [15811.417913] RDX: ffff88024520d7e0 RSI: 0000000000000000 RDI: > ffff880244802000 > [15811.418645] RBP: ffff880227eaf9e8 R08: 0000000000000000 R09: > 0000000000000000 > [15811.419374] R10: 0000000000000092 R11: 0000000000000000 R12: > ffffffff810135bf > [15811.420102] R13: ffff880227eaf878 R14: 0000000100160015 R15: > ffffffff8138278d > [15811.420831] FS: 0000000000000000(0000) GS:ffff880245200000(0000) > knlGS:0000000000000000 > [15811.421572] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [15811.422317] CR2: 0000000000000008 CR3: 0000000225ab9000 CR4: > 00000000001407e0 > [15811.423070] DR0: 00007fbe591ef000 DR1: 0000000000000000 DR2: > 0000000000000000 > [15811.423828] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000600 > [15811.424583] Stack: > [15811.425327] 000000000000005c ffff880240f8d790 ffff880240f8d790 > ffff880240f8dd00 > [15811.426099] 0000000180230020 000000010000000f ffffffff8112ee12 > 0000000000000000 > [15811.426872] ffff8802453d7260 000000020023001f ffff880227eaf968 > ffffffff8138278d > [15811.427657] Call Trace: > [15811.428437] [] ? __delayacct_tsk_init+0x22/0x50 > [15811.429231] [] ? __debug_object_init+0x43d/0x450 > [15811.430025] [] ? set_track+0x70/0x140 > [15811.430814] [] ? init_object+0x3d/0x70 > [15811.431600] [] ? __debug_object_init+0x43d/0x450 > [15811.432394] [] kmem_cache_alloc+0x1cb/0x1f0 > [15811.433180] [] __debug_object_init+0x43d/0x450 > [15811.433972] [] debug_object_init+0x1b/0x20 > [15811.434768] [] hrtimer_init+0x25/0xb0 > [15811.435559] [] __sched_fork+0x99/0x230 > [15811.436349] [] sched_fork+0x29/0x200 > [15811.437141] [] copy_process.part.26+0x65c/0x1a40 > [15811.437937] [] ? local_clock+0x25/0x30 > [15811.438725] [] ? > __lock_acquire.isra.31+0x22c/0x9f0 > [15811.439519] [] ? call_helper+0x20/0x20 > [15811.440307] [] do_fork+0xe7/0x490 > [15811.441094] [] ? > __lock_acquire.isra.31+0x22c/0x9f0 > [15811.441871] [] ? process_one_work+0x178/0x550 > [15811.442637] [] kernel_thread+0x26/0x30 > [15811.443385] [] __call_usermodehelper+0x64/0x80 > [15811.444121] [] process_one_work+0x1fa/0x550 > [15811.444838] [] ? process_one_work+0x178/0x550 > [15811.445538] [] worker_thread+0x11b/0x490 > [15811.446219] [] ? process_one_work+0x550/0x550 > [15811.446883] [] kthread+0xf9/0x110 > [15811.447527] [] ? local_clock+0x25/0x30 > [15811.448159] [] ? > kthread_create_on_node+0x250/0x250 > [15811.448776] [] ret_from_fork+0x7c/0xb0 > [15811.449371] [] ? > kthread_create_on_node+0x250/0x250 > [15811.449968] Code: 00 02 00 00 49 c7 45 00 00 00 00 00 75 11 ff b5 > 78 ff ff ff 9d e8 7a 6d 98 ff 4c 89 e0 eb 0f e8 70 6e 98 ff ff b5 78 > ff ff ff 9d <4c> 89 e0 48 8b 55 c8 65 48 33 14 25 28 00 00 00 74 3c > e8 22 46 > [15811.451292] sending NMI to other CPUs: > [15811.451901] NMI backtrace for cpu 3 > [15811.452459] CPU: 3 PID: 1650 Comm: trinity-c76 Tainted: G > L 3.18.0+ #106 > [15811.454206] task: ffff8801adac4470 ti: ffff880180e04000 task.ti: > ffff880180e04000 > [15811.454817] RIP: 0010:[] [] > __lock_acquire.isra.31+0x21a/0x9f0 > [15811.455437] RSP: 0018:ffff880180e07d18 EFLAGS: 00000002 > [15811.456045] RAX: 0000000000000008 RBX: ffff8801adac4470 RCX: > 0000000000000000 > [15811.456660] RDX: 0000000000000000 RSI: 0000000000000000 RDI: > 0000000000000000 > [15811.457274] RBP: ffff880180e07d88 R08: 0000000000000001 R09: > 0000000000000000 > [15811.457889] R10: 0000000000000000 R11: 0000000000000000 R12: > 000000000000014e > [15811.458493] R13: 0000000000000000 R14: ffff880227cc4db8 R15: > ffff8801adac4be0 > [15811.459092] FS: 00007f79977d8740(0000) GS:ffff880245400000(0000) > knlGS:0000000000000000 > [15811.459699] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [15811.460303] CR2: 0000000000000001 CR3: 00000001c9593000 CR4: > 00000000001407e0 > [15811.460907] DR0: 00007fbe591ef000 DR1: 0000000000000000 DR2: > 0000000000000000 > [15811.461507] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000600 > [15811.462108] Stack: > [15811.462702] ffff880180e07d98 ffffffff810c512c 0000000000000102 > 0000000000000000 > [15811.463325] ffff880180e07d48 ffffffff810abaf5 ffff880180e07dc8 > 0000000000000000 > [15811.463945] ffff880180e07dd8 0000000000000046 0000000000000000 > 0000000000000000 > [15811.464564] Call Trace: > [15811.465173] [] ? > __lock_acquire.isra.31+0x22c/0x9f0 > [15811.465797] [] ? local_clock+0x25/0x30 > [15811.466421] [] lock_acquire+0x9f/0x120 > [15811.467047] [] ? remove_wait_queue+0x1d/0x40 > [15811.467672] [] _raw_spin_lock_irqsave+0x49/0x90 > [15811.468300] [] ? remove_wait_queue+0x1d/0x40 > [15811.468924] [] remove_wait_queue+0x1d/0x40 > [15811.469546] [] do_wait+0x14b/0x280 > [15811.470166] [] SyS_wait4+0x80/0x110 > [15811.470782] [] ? task_stopped_code+0x60/0x60 > [15811.471398] [] tracesys_phase2+0xd4/0xd9 > [15811.472011] Code: e0 7f 44 09 d0 41 88 47 31 41 0f b6 47 32 83 e0 > f0 45 85 c0 0f 95 c2 09 c8 c1 e2 03 09 d0 41 88 47 32 0f b7 55 18 41 > 0f b7 47 32 e2 04 83 e0 0f 09 d0 66 41 89 47 32 e8 a4 69 fe ff > 4c 8b 4d > [15811.473409] NMI backtrace for cpu 1 > [15811.474061] CPU: 1 PID: 2849 Comm: trinity-c95 Tainted: G > L 3.18.0+ #106 > [15811.476098] task: ffff880096b4c470 ti: ffff880153a4c000 task.ti: > ffff880153a4c000 > [15811.476808] RIP: 0010:[] [] > lock_release+0x1f/0x240 > [15811.477535] RSP: 0018:ffff880153a4fe40 EFLAGS: 00000246 > [15811.478253] RAX: ffff880096b4c470 RBX: 0000000000000000 RCX: > 00000000000003a0 > [15811.478982] RDX: ffffffff81086d0c RSI: 0000000000000001 RDI: > ffffffff81c50e20 > [15811.479707] RBP: ffff880153a4fe48 R08: 0000000000000000 R09: > 0000000000000000 > [15811.480419] R10: 0000000000000000 R11: 0000000000000000 R12: > ffff880094be64c0 > [15811.481115] R13: ffff880153a4feb0 R14: 0000000000000000 R15: > 0000000000000000 > [15811.481803] FS: 00007f79977d8740(0000) GS:ffff880245000000(0000) > knlGS:0000000000000000 > [15811.482504] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [15811.483200] CR2: 00007f7996f24220 CR3: 00000002251b4000 CR4: > 00000000001407e0 > [15811.483890] DR0: 00007fbe591ef000 DR1: 0000000000000000 DR2: > 0000000000000000 > [15811.484562] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000600 > [15811.485221] Stack: > [15811.485862] 0000000000000000 ffff880153a4fe88 ffffffff81086d24 > ffffffff81086ca5 > [15811.486521] 0000000000000d7f 0000000000000d7f 0000000000000000 > ffff880096[15835.393872] NMI watchdog: BUG: soft lockup - CPU#2 stuck > for 22s! [kworker/u16:3:14112] > [15835.394432] Modules linked in: bridge 8021q garp stp snd_seq_dummy > dlci tun fuse rfcomm hidp bnep af_key llc2 nfnetlink can_bcm > scsi_transport_iscsi can_raw sctp libcrc32c nfc caif_socket caif > af_802154 ieee802154 phonet af_rxrpc bluetooth can pppoe pppox > ppp_generic slhc irda crc_ccitt rds rose x25 atm netrom appletalk ipx > p8023 psnap p8022 llc ax25 usb_debug cfg80211 rfkill coretemp hwmon > x86_pkg_temp_thermal kvm_intel kvm crct10dif_pclmul crc32c_intel > ghash_clmulni_intel snd_hda_codec_hdmi snd_hda_codec_realtek > snd_hda_codec_generic microcode serio_raw pcspkr snd_hda_intel > snd_hda_controller snd_hda_codec snd_hwdep snd_seq snd_seq_device > snd_pcm e1000e ptp pps_core snd_timer snd soundcore shpchp nfsd > auth_rpcgss oid_registry nfs_acl lockd grace sunrpc > [15835.398378] CPU: 2 PID: 14112 Comm: kworker/u16:3 Tainted: G > L 3.18.0+ #106 > [15835.400379] Workqueue: khelper __call_usermodehelper > [15835.401080] task: ffff8801c95f0000 ti: ffff880227eac000 task.ti: > ffff880227eac000 > [15835.401795] RIP: 0010:[] [] > __slab_alloc+0x52f/0x58f > [15835.402534] RSP: 0018:ffff880227eaf8f8 EFLAGS: 00000246 > [15835.403252] RAX: 0000000000000002 RBX: ffff8802304cf5c8 RCX: > 00000000000002e0 > [15835.403995] RDX: ffff88024520d7e0 RSI: 0000000000000000 RDI: > ffff880244802000 > [15835.404727] RBP: ffff880227eaf9e8 R08: 0000000000000000 R09: > 0000000000000000 > [15835.405456] R10: 0000000000000092 R11: 0000000000000000 R12: > ffffffff810135bf > [15835.406185] R13: ffff880227eaf878 R14: 0000000100160015 R15: > ffffffff8138278d > [15835.406916] FS: 0000000000000000(0000) GS:ffff880245200000(0000) > knlGS:0000000000000000 > [15835.407667] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [15835.408410] CR2: 0000000000000008 CR3: 0000000225ab9000 CR4: > 00000000001407e0 > [15835.409165] DR0: 00007fbe591ef000 DR1: 0000000000000000 DR2: > 0000000000000000 > [15835.409924] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000600 > [15835.410679] Stack: > [15835.411433] 000000000000005c ffff880240f8d790 ffff880240f8d790 > ffff880240f8dd00 > [15835.412226] 0000000180230020 000000010000000f ffffffff8112ee12 > 0000000000000000 > [15835.413002] ffff8802453d7260 000000020023001f ffff880227eaf968 > ffffffff8138278d > [15835.413784] Call Trace: > [15835.414563] [] ? __delayacct_tsk_init+0x22/0x50 > [15835.415358] [] ? __debug_object_init+0x43d/0x450 > [15835.416162] [] ? set_track+0x70/0x140 > [15835.416952] [] ? init_object+0x3d/0x70 > [15835.417745] [] ? __debug_object_init+0x43d/0x450 > [15835.418533] [] kmem_cache_alloc+0x1cb/0x1f0 > [15835.419328] [] __debug_object_init+0x43d/0x450 > [15835.420114] [] debug_object_init+0x1b/0x20 > [15835.420904] [] hrtimer_init+0x25/0xb0 > [15835.421701] [] __sched_fork+0x99/0x230 > [15835.422491] [] sched_fork+0x29/0x200 > [15835.423282] [] copy_process.part.26+0x65c/0x1a40 > [15835.424077] [] ? local_clock+0x25/0x30 > [15835.424865] [] ? > __lock_acquire.isra.31+0x22c/0x9f0 > [15835.425658] [] ? call_helper+0x20/0x20 > [15835.426447] [] do_fork+0xe7/0x490 > [15835.427239] [] ? > __lock_acquire.isra.31+0x22c/0x9f0 > [15835.428018] [] ? process_one_work+0x178/0x550 > [15835.428776] [] kernel_thread+0x26/0x30 > [15835.429525] [] __call_usermodehelper+0x64/0x80 > [15835.430259] [] process_one_work+0x1fa/0x550 > [15835.430986] [] ? process_one_work+0x178/0x550 > [15835.431694] [] worker_thread+0x11b/0x490 > [15835.432374] [] ? process_one_work+0x550/0x550 > [15835.433049] [] kthread+0xf9/0x110 > [15835.433694] [] ? local_clock+0x25/0x30 > [15835.434328] [] ? > kthread_create_on_node+0x250/0x250 > [15835.434947] [] ret_from_fork+0x7c/0xb0 > [15835.435543] [] ? > kthread_create_on_node+0x250/0x250 > [15835.436148] Code: 00 02 00 00 49 c7 45 00 00 00 00 00 75 11 ff b5 > 78 ff ff ff 9d e8 7a 6d 98 ff 4c 89 e0 eb 0f e8 70 6e 98 ff ff b5 78 > ff ff ff 9d <4c> 89 e0 48 8b 55 c8 65 48 33 14 25 28 00 00 00 74 3c > e8 22 46 > [15835.437494] sending NMI to other CPUs: > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/