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SubjectRe: Transparent Hugepage Support #33
On Thu, 16 Dec 2010 09:54:08 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote:

> I'll look into when -mm is shipped.

That might take a while - linux-next is a screwed-up catastrophe and I
suppose some sucker has some bisecting to do.

(The second trace below looks similar to https://bugzilla.kernel.org/show_bug.cgi?id=24942)

[ 241.227687] INFO: task modprobe:904 blocked for more than 120 seconds.
[ 241.227979] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 241.228264] modprobe D 0000000000000007 0 904 1 0x00000000
[ 241.228525] ffff880255cbdc48 0000000000000046 ffff88009edd1dd8 ffff88025736e880
[ 241.228973] ffff880257a508c0 ffff88025736ebd8 0000000000000002 0000000100000000
[ 241.229421] 0000000000000002 0000000000000000 ffff88009edd1dd8 0000000000000000
[ 241.229879] Call Trace:
[ 241.230043] [<ffffffff81391496>] schedule_timeout+0x24/0x1b6
[ 241.230202] [<ffffffff81391293>] ? wait_for_common+0x3a/0x129
[ 241.230364] [<ffffffff8105e1ca>] ? trace_hardirqs_on+0xd/0xf
[ 241.230522] [<ffffffff81391322>] wait_for_common+0xc9/0x129
[ 241.230681] [<ffffffff810317d1>] ? default_wake_function+0x0/0xf
[ 241.230850] [<ffffffff8139141c>] wait_for_completion+0x18/0x1a
[ 241.231010] [<ffffffff8107e7bb>] synchronize_sched+0x51/0x58
[ 241.231169] [<ffffffff8104d3d0>] ? wakeme_after_rcu+0x0/0xf
[ 241.231329] [<ffffffff8106a772>] load_module+0xd4e/0xe81
[ 241.231489] [<ffffffff8106a8e5>] sys_init_module+0x40/0x1d7
[ 241.231658] [<ffffffff810029bb>] system_call_fastpath+0x16/0x1b
[ 241.231831] INFO: lockdep is turned off.
and

[ 271.500616] INFO: rcu_sched_state detected stall on CPU 5 (t=65032 jiffies)
[ 271.500616] sending NMI to all CPUs:
[ 271.500954] NMI backtrace for cpu 2
[ 271.501110] CPU 2
[ 271.501157] Modules linked in: ipv6 dm_mirror dm_region_hash dm_log dm_multipath dm_mod video sbs sbshc battery ac lp parport sg snd_hda_intel snd_hda_codec snd_seq_oss snd_seq_midi_event snd_seq ide_cd_mod serio_raw snd_seq_device snd_pcm_oss shpchp cdrom option usb_wwan snd_mixer_oss snd_pcm usbserial snd_timer snd i2c_i801 soundcore button floppy i2c_core intel_rng(-) snd_page_alloc pcspkr ehci_hcd ohci_hcd uhci_hcd
[ 271.503961]
[ 271.504122] Pid: 0, comm: kworker/0:1 Tainted: G W 2.6.37-rc5-mm1 #1 /
[ 271.504403] RIP: 0010:[<ffffffff81009c9b>] [<ffffffff81009c9b>] mwait_idle+0x76/0x82
[ 271.504662] RSP: 0018:ffff880257967f08 EFLAGS: 00000246
[ 271.504662] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 271.504662] RDX: 0000000000000000 RSI: ffff880257966010 RDI: ffffffff81009c91
[ 271.504662] RBP: ffff880257967f18 R08: 0000000000000000 R09: 0000000000000001
[ 271.504662] R10: ffffffff8102b7d4 R11: ffffffff81396dcc R12: 0000000000000000
[ 271.504662] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 271.504662] FS: 0000000000000000(0000) GS:ffff88009e200000(0000) knlGS:0000000000000000
[ 271.504662] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 271.504662] CR2: 0000003e5f0948f0 CR3: 000000000179b000 CR4: 00000000000006e0
[ 271.504662] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 271.504662] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 271.504662] Process kworker/0:1 (pid: 0, threadinfo ffff880257966000, task ffff8802579643c0)
[ 271.504662] Stack:
[ 271.504662] 0000000000000000 0000000000000002 ffff880257967f28 ffffffff810014cf
[ 271.504662] ffff880257967f48 ffffffff8138c3e8 ffffffff8138c25d 0000000000000000
[ 271.504662] 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[ 271.504662] Call Trace:
[ 271.504662] [<ffffffff810014cf>] cpu_idle+0x48/0x68
[ 271.504662] [<ffffffff8138c3e8>] start_secondary+0x18b/0x18f
[ 271.504662] [<ffffffff8138c25d>] ? start_secondary+0x0/0x18f
[ 271.504662] Code: 31 db 48 89 f0 48 89 d9 48 89 da 0f 01 c8 0f ae f0 48 8b 87 38 e0 ff ff a8 08 75 11 e8 2c 45 05 00 48 89 d8 48 89 d9 fb 0f 01 c9 <eb> 06 e8 1b 45 05 00 fb 58 5b c9 c3 55 ba e8 12 00 00 48 89 e5
[ 271.504662] Call Trace:
[ 271.504662] [<ffffffff810014cf>] cpu_idle+0x48/0x68
[ 271.504662] [<ffffffff8138c3e8>] start_secondary+0x18b/0x18f
[ 271.504662] [<ffffffff8138c25d>] ? start_secondary+0x0/0x18f
[ 271.504662] Pid: 0, comm: kworker/0:1 Tainted: G W 2.6.37-rc5-mm1 #1
[ 271.504662] Call Trace:
[ 271.504662] <NMI> [<ffffffff8139529d>] ? arch_trigger_all_cpu_backtrace_handler+0x64/0x80
[ 271.504662] [<ffffffff81396d97>] ? notifier_call_chain+0x81/0xb6
[ 271.504662] [<ffffffff81396e27>] ? __atomic_notifier_call_chain+0x5b/0x84
[ 271.504662] [<ffffffff81396dcc>] ? __atomic_notifier_call_chain+0x0/0x84
[ 271.504662] [<ffffffff81396e5f>] ? atomic_notifier_call_chain+0xf/0x11
[ 271.504662] [<ffffffff81396e8f>] ? notify_die+0x2e/0x30
[ 271.504662] [<ffffffff8139454d>] ? do_nmi+0xa7/0x2a1
[ 271.504662] [<ffffffff8139424a>] ? nmi+0x1a/0x2c
[ 271.504662] [<ffffffff81396dcc>] ? __atomic_notifier_call_chain+0x0/0x84
[ 271.504662] [<ffffffff8102b7d4>] ? finish_task_switch+0x44/0xb8
[ 271.504662] [<ffffffff81009c91>] ? mwait_idle+0x6c/0x82
[ 271.504662] [<ffffffff81009c9b>] ? mwait_idle+0x76/0x82
[ 271.504662] <<EOE>> [<ffffffff810014cf>] ? cpu_idle+0x48/0x68
[ 271.504662] [<ffffffff8138c3e8>] ? start_secondary+0x18b/0x18f
[ 271.504662] [<ffffffff8138c25d>] ? start_secondary+0x0/0x18f
[ 271.500616] NMI backtrace for cpu 5
[ 271.500616] CPU 5
[ 271.500616] Modules linked in: ipv6 dm_mirror dm_region_hash dm_log dm_multipath dm_mod video sbs sbshc battery ac lp parport sg snd_hda_intel snd_hda_codec snd_seq_oss snd_seq_midi_event snd_seq ide_cd_mod serio_raw snd_seq_device snd_pcm_oss shpchp cdrom option usb_wwan snd_mixer_oss snd_pcm usbserial snd_timer snd i2c_i801 soundcore button floppy i2c_core intel_rng(-) snd_page_alloc pcspkr ehci_hcd ohci_hcd uhci_hcd
[ 271.500616]
[ 271.500616] Pid: 0, comm: kworker/0:1 Tainted: G W 2.6.37-rc5-mm1 #1 /
[ 271.500616] RIP: 0010:[<ffffffff8119b624>] [<ffffffff8119b624>] __bitmap_empty+0x5a/0x63
[ 271.500616] RSP: 0018:ffff88009e803e90 EFLAGS: 00000046
[ 271.500616] RAX: 0000000000000000 RBX: 0000000000002710 RCX: ffffffff8180e4e8
[ 271.500616] RDX: 0000000000000000 RSI: 00000000000000ff RDI: ffffffff8180e4e0
[ 271.500616] RBP: ffff88009e803e98 R08: 0000000000000003 R09: 0000000000000000
[ 271.500616] R10: 0000000000000000 R11: ffff88025589aec0 R12: ffff88009e9ce760
[ 271.500616] R13: ffffffff817b3080 R14: 0000000000000000 R15: ffffffff817b3180
[ 271.500616] FS: 0000000000000000(0000) GS:ffff88009e800000(0000) knlGS:0000000000000000
[ 271.500616] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 271.500616] CR2: 00000000008cfb80 CR3: 0000000255941000 CR4: 00000000000006e0
[ 271.500616] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 271.500616] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 271.500616] Process kworker/0:1 (pid: 0, threadinfo ffff8802579e8000, task ffff8802579e66c0)
[ 271.500616] Stack:
[ 271.500616] ffff88025589aec0 ffff88009e803eb8 ffffffff8101a53c ffff8802579e66c0
[ 271.500616] 0000000000000005 ffff88009e803ef8 ffffffff8107ec29 ffff8802579e66c0
[ 271.500616] 0000000000000005 0000000000000005 ffff8802579e66c0 0000000000000000
[ 271.500616] Call Trace:
[ 271.500616] <IRQ>
[ 271.500616] [<ffffffff8101a53c>] arch_trigger_all_cpu_backtrace+0x52/0x6a
[ 271.500616] [<ffffffff8107ec29>] __rcu_pending+0x7e/0x2f0
[ 271.500616] [<ffffffff8107ef1d>] rcu_check_callbacks+0x82/0xb3
[ 271.500616] [<ffffffff8104275f>] update_process_times+0x38/0x6e
[ 271.500616] [<ffffffff8105a0f8>] tick_periodic+0x63/0x6f
[ 271.500616] [<ffffffff8105a122>] tick_handle_periodic+0x1e/0x6b
[ 271.500616] [<ffffffff81019a37>] smp_apic_timer_interrupt+0x83/0x96
[ 271.500616] [<ffffffff810033d3>] apic_timer_interrupt+0x13/0x20
[ 271.500616] <EOI>
[ 271.500616] [<ffffffff81396dcc>] ? __atomic_notifier_call_chain+0x0/0x84
[ 271.500616] [<ffffffff8102b7d4>] ? finish_task_switch+0x44/0xb8
[ 271.500616] [<ffffffff81009c91>] ? mwait_idle+0x6c/0x82
[ 271.500616] [<ffffffff81009c9b>] ? mwait_idle+0x76/0x82
[ 271.500616] [<ffffffff81009c91>] ? mwait_idle+0x6c/0x82
[ 271.500616] [<ffffffff810014cf>] cpu_idle+0x48/0x68
[ 271.500616] [<ffffffff8138c3e8>] start_secondary+0x18b/0x18f
[ 271.500616] [<ffffffff8138c25d>] ? start_secondary+0x0/0x18f
[ 271.500616] Code: 89 f0 83 e0 3f 85 c0 74 24 89 f0 4c 63 c2 b9 40 00 00 00 99 f7 f9 b8 01 00 00 00 89 d1 48 d3 e0 48 ff c8 4a 85 04 c7 74 04 31 c0 <eb> 05 b8 01 00 00 00 c9 c3 55 ba 40 00 00 00 89 f1 48 89 e5 53


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