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Message-ID: <20141203184111.GA32005@redhat.com> Date: Wed, 3 Dec 2014 13:41:11 -0500 From: Dave Jones <davej@...hat.com> To: Chris Mason <clm@...com> Cc: Linus Torvalds <torvalds@...ux-foundation.org>, Mike Galbraith <umgwanakikbuti@...il.com>, Ingo Molnar <mingo@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Dâniel Fraga <fragabr@...il.com>, Sasha Levin <sasha.levin@...cle.com>, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: frequent lockups in 3.18rc4 On Tue, Dec 02, 2014 at 12:14:53PM -0500, Chris Mason wrote: > On Tue, Dec 2, 2014 at 11:33 AM, Linus Torvalds > <torvalds@...ux-foundation.org> wrote: > > On Tue, Dec 2, 2014 at 6:13 AM, Mike Galbraith > > <umgwanakikbuti@...il.com> wrote: > > > > At the same time, the whole "incapacitated by the rt throttle long > > enough for the hard lockup detector to trigger" commentary about that > > skip_clock_update issue does make me go "Hmmm..". It would certainly > > explain Dave's incomprehensible watchdog messages.. > > Dave's first email mentioned that he had panic on softlockup enabled, > but even with that off the box wasn't recovering. Not sure if I mentioned in an earlier post, but when I'm local to the machine, I've disabled reboot-on-lockup, but yes the problem case is the situation where it actually does lock up afterwards. > In my trinity runs here, I've gotten softlockup warnings where the box > eventually recovered. I'm wondering if some of the "bad" commits in > the bisection are really false positives where the box would have been > able to recover if we'd killed off all the trinity procs and given it > time to breath. So I've done multiple runs against 3.17-rc1 during bisecting, and hit the case you describe, where I get a dump like below, and then it eventually recovers. (Trinity then exits because the taint flag changes). I've been stuck on this kernel for a few days now trying to prove it good/bad one way or the other, and I'm leaning towards good, given that it recovers, even though the traces look similar. Dave [ 9862.915562] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [trinity-c29:13237] [ 9862.915684] Modules linked in: 8021q garp stp tun fuse bnep hidp llc2 af_key nfnetlink can_bcm scsi_transport_iscsi can_raw nfc caif_socket caif af_802154 ieee802154 phonet af_rxrpc rfcomm bluetooth can pppoe pppox ppp_generic slhc irda crc_ccitt rds rose x25 atm netrom appletalk ipx p8023 psnap p8022 llc ax25 cfg80211 rfkill snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep e1000e snd_seq coretemp hwmon x86_pkg_temp_thermal nfsd kvm_intel kvm snd_seq_device snd_pcm snd_timer ptp auth_rpcgss snd shpchp oid_registry crct10dif_pclmul crc32c_intel ghash_clmulni_intel usb_debug soundcore pps_core nfs_acl microcode serio_raw pcspkr lockd sunrpc [ 9862.915987] CPU: 0 PID: 13237 Comm: trinity-c29 Not tainted 3.17.0-rc1+ #112 [ 9862.916046] task: ffff88022657dbc0 ti: ffff8800962b0000 task.ti: ffff8800962b0000 [ 9862.916071] RIP: 0010:[<ffffffff81042569>] [<ffffffff81042569>] lookup_address_in_pgd+0x89/0xe0 [ 9862.916103] RSP: 0018:ffff8800962b36a8 EFLAGS: 00000202 [ 9862.917024] RAX: ffff88024da748d0 RBX: ffffffff81164c63 RCX: 0000000000000001 [ 9862.917956] RDX: ffff8800962b3740 RSI: ffff8801a3417000 RDI: 000000024da74000 [ 9862.918891] RBP: ffff8800962b36a8 R08: 00003ffffffff000 R09: ffff880000000000 [ 9862.919828] R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff81375a47 [ 9862.920758] R13: ffff8800962b3618 R14: ffff8802441d81f0 R15: fffff70c86134602 [ 9862.921681] FS: 00007f06c569f740(0000) GS:ffff880244000000(0000) knlGS:0000000000000000 [ 9862.922603] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 9862.923526] CR2: 0000000002378590 CR3: 00000000a1ba3000 CR4: 00000000001407f0 [ 9862.924459] DR0: 00007f40a579e000 DR1: 0000000000000000 DR2: 0000000000000000 [ 9862.925386] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 [ 9862.926342] Stack: [ 9862.927255] ffff8800962b36b8 ffffffff810425e8 ffff8800962b36c8 ffffffff810426ab [ 9862.928188] ffff8800962b37c0 ffffffff810427a0 ffffffff810bfc5e ffff8800962b36f0 [ 9862.929127] ffffffff810a89f5 ffff8800962b3768 ffffffff810c19b4 0000000000000002 [ 9862.930072] Call Trace: [ 9862.931008] [<ffffffff810425e8>] lookup_address+0x28/0x30 [ 9862.931958] [<ffffffff810426ab>] _lookup_address_cpa.isra.9+0x3b/0x40 [ 9862.932913] [<ffffffff810427a0>] __change_page_attr_set_clr+0xf0/0xab0 [ 9862.933869] [<ffffffff810bfc5e>] ? put_lock_stats.isra.23+0xe/0x30 [ 9862.934831] [<ffffffff810a89f5>] ? local_clock+0x25/0x30 [ 9862.935827] [<ffffffff810c19b4>] ? __lock_acquire.isra.31+0x264/0xa60 [ 9862.936798] [<ffffffff8109bfed>] ? finish_task_switch+0x7d/0x120 [ 9862.937765] [<ffffffff810bfc5e>] ? put_lock_stats.isra.23+0xe/0x30 [ 9862.938730] [<ffffffff810bffc6>] ? lock_release_holdtime.part.24+0xe6/0x160 [ 9862.939698] [<ffffffff8104418b>] kernel_map_pages+0x7b/0x120 [ 9862.940653] [<ffffffff81178517>] get_page_from_freelist+0x497/0xaa0 [ 9862.941597] [<ffffffff81179498>] __alloc_pages_nodemask+0x228/0xb20 [ 9862.942539] [<ffffffff810a89f5>] ? local_clock+0x25/0x30 [ 9862.943469] [<ffffffff810c19b4>] ? __lock_acquire.isra.31+0x264/0xa60 [ 9862.944411] [<ffffffff8135fe50>] ? __radix_tree_preload+0x60/0xf0 [ 9862.945357] [<ffffffff8135fe50>] ? __radix_tree_preload+0x60/0xf0 [ 9862.946326] [<ffffffff811c14c1>] alloc_pages_vma+0xf1/0x1b0 [ 9862.947263] [<ffffffff8118766e>] ? shmem_alloc_page+0x6e/0xc0 [ 9862.948205] [<ffffffff8118766e>] shmem_alloc_page+0x6e/0xc0 [ 9862.949148] [<ffffffff810a2dbb>] ? preempt_count_sub+0x6b/0xf0 [ 9862.950090] [<ffffffff810a2c5d>] ? get_parent_ip+0xd/0x50 [ 9862.951012] [<ffffffff810a2dbb>] ? preempt_count_sub+0x6b/0xf0 [ 9862.951913] [<ffffffff81382666>] ? __percpu_counter_add+0x86/0xb0 [ 9862.952811] [<ffffffff811a4362>] ? __vm_enough_memory+0x62/0x1c0 [ 9862.953700] [<ffffffff812eb0c7>] ? cap_vm_enough_memory+0x47/0x50 [ 9862.954591] [<ffffffff81189f00>[ 9893.337880] [sched_delayed] sched: RT throttling activated [ 9918.893057] NMI watchdog: BUG: soft lockup - CPU#1 stuck for 24s! [swapper/1:0] [ 9918.894352] Modules linked in: 8021q garp stp tun fuse bnep hidp llc2 af_key nfnetlink can_bcm scsi_transport_iscsi can_raw nfc caif_socket caif af_802154 ieee802154 phonet af_rxrpc rfcomm bluetooth can pppoe pppox ppp_generic slhc irda crc_ccitt rds rose x25 atm netrom appletalk ipx p8023 psnap p8022 llc ax25 cfg80211 rfkill snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep e1000e snd_seq coretemp hwmon x86_pkg_temp_thermal nfsd kvm_intel kvm snd_seq_device snd_pcm snd_timer ptp auth_rpcgss snd shpchp oid_registry crct10dif_pclmul crc32c_intel ghash_clmulni_intel usb_debug soundcore pps_core nfs_acl microcode serio_raw pcspkr lockd sunrpc [ 9918.901158] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G L 3.17.0-rc1+ #112 [ 9918.903863] task: ffff880242b716f0 ti: ffff88024240c000 task.ti: ffff88024240c000 [ 9918.905218] RIP: 0010:[<ffffffff81645849>] [<ffffffff81645849>] cpuidle_enter_state+0x79/0x1c0 [ 9918.906591] RSP: 0000:ffff88024240fe60 EFLAGS: 00000246 [ 9918.907933] RAX: 0000000000000000 RBX: ffff880242b716f0 RCX: 0000000000000019 [ 9918.909264] RDX: 20c49ba5e353f7cf RSI: 000000000003cea4 RDI: 00536da522b45eb6 [ 9918.910594] RBP: ffff88024240fe98 R08: 000000008baf9f86 R09: 0000000000000000 [ 9918.911916] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88024240fdf0 [ 9918.913243] R13: ffffffff810bfc5e R14: ffff88024240fdd0 R15: 00000000000001e1 [ 9918.914523] FS: 0000000000000000(0000) GS:ffff880244200000(0000) knlGS:0000000000000000 [ 9918.915815] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 9918.917108] CR2: 000000000044bfa0 CR3: 0000000001c11000 CR4: 00000000001407e0 [ 9918.918414] DR0: 00007f40a579e000 DR1: 0000000000000000 DR2: 0000000000000000 [ 9918.919710] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 [ 9918.920998] Stack: [ 9918.922273] 00000906c89bd5bb ffffffff81cae7f0 ffffffff81d1d290 ffffe8ffff004da8 [ 9918.923576] ffff88024240c000 ffffffff81cae620 ffff88024240c000 ffff88024240fea8 [ 9918.924845] ffffffff81645a47 ffff88024240ff10 ffffffff810b9fb4 ffff88024240ffd8 [ 9918.926108] Call Trace: [ 9918.927351] [<ffffffff81645a47>] cpuidle_enter+0x17/0x20 [ 9918.928602] [<ffffffff810b9fb4>] cpu_startup_entry+0x384/0x410 [ 9918.929850] [<ffffffff8102ff37>] start_secondary+0x237/0x340 [ 9918.931086] Code: d0 48 89 df ff 50 48 41 89 c5 e8 b3 5c aa ff 44 8b 63 04 49 89 c7 0f 1f 44 00 00 e8 a2 19 b0 ff fb 48 ba cf f7 53 e3 a5 9b c4 20 <4c> 2b 7d c8 4c 89 f8 49 c1 ff 3f 48 f7 ea b8 ff ff ff 7f 48 c1 [ 9918.933755] sending NMI to other CPUs: [ 9918.935008] NMI backtrace for cpu 2 [ 9918.936208] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G L 3.17.0-rc1+ #112 [ 9918.938592] task: ffff880242b744d0 ti: ffff880242414000 task.ti: ffff880242414000 [ 9918.939793] RIP: 0010:[<ffffffff813c9e65>] [<ffffffff813c9e65>] intel_idle+0xd5/0x180 [ 9918.941003] RSP: 0018:ffff880242417e20 EFLAGS: 00000046 [ 9918.942191] RAX: 0000000000000032 RBX: 0000000000000010 RCX: 0000000000000001 [ 9918.943369] RDX: 0000000000000000 RSI: ffff880242417fd8 RDI: 0000000000000002 [ 9918.944535] RBP: ffff880242417e50 R08: 000000008baf9f86 R09: 0000000000000000 [ 9918.945695] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000005 [ 9918.946856] R13: 0000000000000032 R14: 0000000000000004 R15: ffff880242414000 [ 9918.948013] FS: 0000000000000000(0000) GS:ffff880244400000(0000) knlGS:0000000000000000 [ 9918.949175] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 9918.950339] CR2: 000000000068f760 CR3: 0000000001c11000 CR4: 00000000001407e0 [ 9918.951515] DR0: 00007f40a579e000 DR1: 0000000000000000 DR2: 0000000000000000 [ 9918.952678] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 [ 9918.953840] Stack: [ 9918.954988] 0000000242414000 d7251be6f43cb9e7 ffffe8ffff204da8 0000000000000005 [ 9918.956164] ffffffff81cae620 0000000000000002 ffff880242417e98 ffffffff81645825 [ 9918.957345] 00000906cb95d0a1 ffffffff81cae7f0 ffffffff81d1d290 ffffe8ffff204da8 [ 9918.958527] Call Trace: [ 9918.959692] [<ffffffff81645825>] cpuidle_enter_state+0x55/0x1c0 [ 9918.960866] [<ffffffff81645a47>] cpuidle_enter+0x17/0x20 [ 9918.962029] [<ffffffff810b9fb4>] cpu_startup_entry+0x384/0x410 [ 9918.963185] [<ffffffff8102ff37>] start_secondary+0x237/0x340 [ 9918.964339] Code: 31 d2 65 48 8b 34 25 08 ba 00 00 48 8d 86 38 c0 ff ff 48 89 d1 0f 01 c8 48 8b 86 38 c0 ff ff a8 08 75 08 b1 01 4c 89 e8 0f 01 c9 <65> 48 8b 0c 25 08 ba 00 00 f0 80 a1 3a c0 ff ff df 0f ae f0 48 [ 9918.966852] NMI backtrace for cpu 3 [ 9918.968059] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G L 3.17.0-rc1+ #112 [ 9918.970450] task: ffff880242b72de0 ti: ffff880242418000 task.ti: ffff880242418000 [ 9918.971652] RIP: 0010:[<ffffffff813c9e65>] [<ffffffff813c9e65>] intel_idle+0xd5/0x180 [ 9918.972862] RSP: 0018:ffff88024241be20 EFLAGS: 00000046 [ 9918.974045] RAX: 0000000000000032 RBX: 0000000000000010 RCX: 0000000000000001 [ 9918.975212] RDX: 0000000000000000 RSI: ffff88024241bfd8 RDI: 0000000000000003 [ 9918.976349] RBP: ffff88024241be50 R08: 000000008baf9f86 R09: 0000000000000000 [ 9918.977463] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000005 [ 9918.978550] R13: 0000000000000032 R14: 0000000000000004 R15: ffff880242418000 [ 9918.979628] FS: 0000000000000000(0000) GS:ffff880244600000(0000) knlGS:0000000000000000 [ 9918.980695] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 9918.981739] CR2: 00007f37d766f050 CR3: 0000000001c11000 CR4: 00000000001407e0 [ 9918.982786] DR0: 00007f40a579e000 DR1: 0000000000000000 DR2: 0000000000000000 [ 9918.983821] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 [ 9918.984849] Stack: [ 9918.985866] 0000000342418000 63d0570b22f343d2 ffffe8ffff404da8 0000000000000005 [ 9918.986911] ffffffff81cae620 0000000000000003 ffff88024241be98 ffffffff81645825 [ 9918.987961] 00000906cb9636ab ffffffff81cae7f0 ffffffff81d1d290 ffffe8ffff404da8 [ 9918.989007] Call Trace: [ 9918.990036] [<ffffffff81645825>] cpuidle_enter_state+0x55/0x1c0 [ 9918.991072] [<ffffffff81645a47>] cpuidle_enter+0x17/0x20 [ 9918.992097] [<ffffffff810b9fb4>] cpu_startup_entry+0x384/0x410 [ 9918.993127] [<ffffffff8102ff37>] start_secondary+0x237/0x340 [ 9918.994152] Code: 31 d2 65 48 8b 34 25 08 ba 00 00 48 8d 86 38 c0 ff ff 48 89 d1 0f -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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