linux-kernel - 3.10.5: rcu_sched detected stalls on CPUs/tasks

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Date:	Tue, 13 Aug 2013 12:32:03 +0200
From:	Jochen Striepe <jochen@...ot.escape.de>
To:	linux-kernel@...r.kernel.org
Subject: 3.10.5: rcu_sched detected stalls on CPUs/tasks

	Hello,

just hit this one. Please tell me if you need any more information.

Greetings from Germany,
Jochen.

[51204.416745] INFO: rcu_sched detected stalls on CPUs/tasks: { 1} (detected by 0, t=21120 jiffies, g=321982, c=321981, q=28)
[51204.417199] sending NMI to all CPUs:
[51204.417212] NMI backtrace for cpu 0
[51204.417225] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.10.5 #1
[51204.417410] Hardware name: ASUSTeK Computer INC. 1201HA/1201HA, BIOS 0210    11/25/2009
[51204.417659] task: c144e1a0 ti: f5806000 task.ti: c1442000
[51204.417830] EIP: 0060:[<c118c070>] EFLAGS: 00200006 CPU: 0
[51204.417849] EIP is at __const_udelay+0x0/0x20
[51204.417858] EAX: 00418958 EBX: 00002710 ECX: c1455ba0 EDX: fffff000
[51204.417867] ESI: c145a300 EDI: 00000001 EBP: c145a300 ESP: f5807ea0
[51204.417876]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[51204.417886] CR0: 8005003b CR2: b8b22644 CR3: 014ea000 CR4: 000007d0
[51204.417894] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[51204.417902] DR6: ffff0ff0 DR7: 00000400
[51204.417908] Stack:
[51204.417978]  c1021b92 c13da31d f77dcdc0 c109c63e c13e7e80 00000000 00005280 0004e9be
[51204.417999]  0004e9bd 0000001c 00000001 00000000 00000001 c14827f0 00200083 c144e1a0
[51204.418019]  00000000 00000000 c1443ebc c103ca86 f77dcc00 f511b9d9 00002e91 c107495c
[51204.418040] Call Trace:
[51204.418139]  [<c1021b92>] ? arch_trigger_all_cpu_backtrace+0x52/0x70
[51204.418155]  [<c109c63e>] ? rcu_check_callbacks+0x4ae/0x4d0
[51204.418171]  [<c103ca86>] ? update_process_times+0x36/0x70
[51204.418187]  [<c107495c>] ? tick_sched_timer+0x3c/0x80
[51204.418201]  [<c104f397>] ? __remove_hrtimer+0x47/0xa0
[51204.418215]  [<c104f481>] ? __run_hrtimer.isra.29+0x41/0xc0
[51204.418229]  [<c10500c5>] ? hrtimer_interrupt+0x205/0x290
[51204.418245]  [<c1073a33>] ? tick_do_broadcast.constprop.8+0x63/0x70
[51204.418260]  [<c1073bc8>] ? tick_handle_oneshot_broadcast+0x108/0x150
[51204.418276]  [<c122d5e3>] ? credit_entropy_bits.part.10+0xa3/0x140
[51204.418291]  [<c1003aea>] ? timer_interrupt+0xa/0x10
[51204.418305]  [<c10945ce>] ? handle_irq_event_percpu+0x2e/0x140
[51204.418320]  [<c102227a>] ? io_apic_modify_irq.isra.13+0x4a/0x60
[51204.418333]  [<c109470e>] ? handle_irq_event+0x2e/0x50
[51204.418347]  [<c10967f0>] ? handle_simple_irq+0x60/0x60
[51204.418360]  [<c109684a>] ? handle_edge_irq+0x5a/0xe0
[51204.418367]  <IRQ> 
[51204.418437]  [<c10032ae>] ? do_IRQ+0x3e/0xc0
[51204.418569]  [<f82326c2>] ? scsi_io_completion+0x1d2/0x650 [scsi_mod]
[51204.418585]  [<c13516f3>] ? common_interrupt+0x33/0x38
[51204.418600]  [<c10375e1>] ? __do_softirq+0x71/0x160
[51204.418615]  [<c107489a>] ? tick_do_update_jiffies64+0xda/0x130
[51204.418629]  [<c10377f5>] ? irq_exit+0x85/0x90
[51204.418641]  [<c10032b7>] ? do_IRQ+0x47/0xc0
[51204.418656]  [<c10513e4>] ? notifier_call_chain+0x44/0x60
[51204.418669]  [<c13516f3>] ? common_interrupt+0x33/0x38
[51204.418684]  [<c106007b>] ? unregister_fair_sched_group+0xb/0xa0
[51204.418698]  [<c125e8e8>] ? cpuidle_enter_state+0x48/0xd0
[51204.418711]  [<c125e9f1>] ? cpuidle_idle_call+0x81/0x110
[51204.418726]  [<c10091f5>] ? arch_cpu_idle+0x5/0x20
[51204.418739]  [<c106b7e9>] ? cpu_startup_entry+0x89/0x160
[51204.418752]  [<c1487a02>] ? start_kernel+0x332/0x338
[51204.418766]  [<c1487511>] ? repair_env_string+0x4d/0x4d
[51204.418773] Code: 00 00 00 00 8d bc 27 00 00 00 00 48 75 fd 48 90 90 90 90 90 90 c3 90 8d 74 26 00 ff 15 a4 aa 46 c1 90 90 90 90 90 90 c3 8d 76 00 <c1> e0 02 64 8b 15 1c 20 4e c1 6b d2 3e f7 e2 89 d0 83 c0 01 ff
[51119.954433] NMI backtrace for cpu 1
[51119.954433] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.10.5 #1
[51119.954433] Hardware name: ASUSTeK Computer INC. 1201HA/1201HA, BIOS 0210    11/25/2009
[51119.954433] task: f58d5100 ti: f58da000 task.ti: f58da000
[51119.954433] EIP: 0060:[<c106b862>] EFLAGS: 00200246 CPU: 1
[51119.954433] EIP is at cpu_startup_entry+0x102/0x160
[51119.954433] EAX: 00000000 EBX: c14827ec ECX: 00000000 EDX: f58da000
[51119.954433] ESI: 00000000 EDI: 00000000 EBP: 00000000 ESP: f58dbf8c
[51119.954433]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[51119.954433] CR0: 8005003b CR2: b8b2beb8 CR3: 014ea000 CR4: 000007d0
[51119.954433] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[51119.954433] DR6: ffff0ff0 DR7: 00000400
[51119.954433] Stack:
[51119.954433]  7d630dfa 89199db0 4772e76c c134762b dfd7ffff ff7fffe3 00000000 00000000
[51119.954433]  26c9db13 4772e76c 01020800 00000000 00000000 00000000 00000000 00000000
[51119.954433]  00000000 0000007b 0000007b 000000d8 000000e0 ffffffff 00000000 00000060
[51119.954433] Call Trace:
[51119.954433]  [<c134762b>] ? start_secondary+0x1e6/0x1ec
[51119.954433] Code: c1 85 c0 74 84 e8 4f fb 02 00 fb 89 e0 25 00 e0 ff ff 8b 40 08 a8 08 75 19 89 e2 81 e2 00 e0 ff ff 90 8d b4 26 00 00 00 00 f3 90 <8b> 42 08 a8 08 74 f7 e8 92 fa 02 00 eb 96 e8 6b d9 f9 ff eb b6

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