Well this time I got a lot more symbols for you guys! I didn't change
anything except reboot a couple times. Log is attached. I don't debug
symbols often (never done it with kernel code before) but I'll give it
a shot with gdb and report back, I'll be glad to help solve this
issue.

Alec Ari

On Thu, Sep 15, 2016 at 12:15 PM, NTU <neotheu...@gmail.com> wrote:
> Sorry!!
>
> Alec Ari
>
> On Thu, Sep 15, 2016 at 1:22 AM, Mike Galbraith
> <umgwanakikb...@gmail.com> wrote:
>> On Wed, 2016-09-14 at 23:02 -0500, NTU wrote:
>>> [   26.542980] Call Trace:
>>> [   26.542983]  [<ffffffffa7fbd7c1>] ? 0xffffffffa7fbd7c1
>>> [   26.542985]  [<ffffffffa7f17d35>] ? 0xffffffffa7f17d35
>>> [   26.542986]  [<ffffffffa796c115>] ? 0xffffffffa796c115
>>> [   26.542988]  [<ffffffffa7633d86>] ? 0xffffffffa7633d86
>>> [   26.542989]  [<ffffffffa796c0a6>] ? 0xffffffffa796c0a6
>> ...
>>
>> The stack trace is useless without symbols.
[   25.304576] INFO: rcu_sched self-detected stall on CPU
[   25.305585] INFO: rcu_sched detected stalls on CPUs/tasks:
[   25.305595]  3-...: (20987 ticks this GP) idle=943/140000000000001/0 
softirq=146/146 fqs=5170 
[   25.305599]  (detected by 1, t=21002 jiffies, g=-222, c=-223, q=6)
[   25.305600] Task dump for CPU 3:
[   25.305604] swapper/0       R  running task        0     1      0 0x00000008
[   25.305609]  0000000000000003 ffff8803a4bef228 0000000000015120 
ffff8803a4be4780
[   25.305613]  ffffffffa0e0e600 0000000000000297 0000000000000000 
0000000000000297
[   25.305616]  ffff88039dd91ed0 0000000000085d8c ffff8803a4bef220 
0000000000000297
[   25.305617] Call Trace:
[   25.305626]  [<ffffffff9fdbfe01>] ? depot_save_stack+0x181/0x610
[   25.305630]  [<ffffffff9fd1a205>] ? free_cpumask_var+0x15/0x20
[   25.305635]  [<ffffffff9f76e495>] ? save_stack+0xb5/0xd0
[   25.305638]  [<ffffffff9f433d86>] ? save_stack_trace+0x26/0x50
[   25.305641]  [<ffffffff9f76e426>] ? save_stack+0x46/0xd0
[   25.305644]  [<ffffffff9f76eae1>] ? kasan_slab_free+0x71/0xb0
[   25.305646]  [<ffffffff9f76c950>] ? kfree+0x80/0x140
[   25.305649]  [<ffffffff9fd1a205>] ? free_cpumask_var+0x15/0x20
[   25.305653]  [<ffffffff9f457b6e>] ? native_send_call_func_ipi+0x19e/0x3e0
[   25.305657]  [<ffffffff9f5d308f>] ? smp_call_function_many+0x51f/0x900
[   25.305660]  [<ffffffff9f5d3521>] ? on_each_cpu+0x31/0x50
[   25.305664]  [<ffffffff9f48e4a7>] ? flush_tlb_all+0x17/0x20
[   25.305667]  [<ffffffff9f480be2>] ? __change_page_attr_set_clr+0x4a2/0x2340
[   25.305670]  [<ffffffff9f481d85>] ? __change_page_attr_set_clr+0x1645/0x2340
[   25.305673]  [<ffffffff9f482db6>] ? change_page_attr_set_clr+0x336/0xa60
[   25.305676]  [<ffffffff9f485a64>] ? set_memory_np+0x34/0x40
[   25.305679]  [<ffffffff9f4773d2>] ? free_init_pages+0x122/0x130
[   25.305682]  [<ffffffff9f4788ea>] ? mark_rodata_ro+0x1ca/0x230
[   25.305685]  [<ffffffffa0c6b114>] ? kernel_init+0x34/0x180
[   25.305688]  [<ffffffffa0c7c00f>] ? ret_from_fork+0x1f/0x40
[   25.305691]  [<ffffffff9f76a08a>] ? alloc_debug_processing+0x5a/0x1b0
[   25.305694]  [<ffffffff9f76b06e>] ? ___slab_alloc.constprop.58+0x2de/0x420
[   25.305697]  [<ffffffff9fd1a0ce>] ? alloc_cpumask_var_node+0x5e/0xf0
[   25.305700]  [<ffffffff9f76e536>] ? kasan_unpoison_shadow+0x36/0x50
[   25.305703]  [<ffffffff9f76e536>] ? kasan_unpoison_shadow+0x36/0x50
[   25.305706]  [<ffffffff9fd4a3d8>] ? __bitmap_weight+0xd8/0x160
[   25.305709]  [<ffffffff9f76eaf7>] ? kasan_slab_free+0x87/0xb0
[   25.305711]  [<ffffffff9f76c950>] ? kfree+0x80/0x140
[   25.305714]  [<ffffffff9fd1a205>] ? free_cpumask_var+0x15/0x20
[   25.305718]  [<ffffffff9f457b6e>] ? native_send_call_func_ipi+0x19e/0x3e0
[   25.305721]  [<ffffffff9f4579d0>] ? native_smp_send_reschedule+0x110/0x110
[   25.305724]  [<ffffffff9fd59b59>] ? _find_next_bit+0xe9/0x120
[   25.305726]  [<ffffffff9fd59bb7>] ? find_next_bit+0x27/0x30
[   25.305730]  [<ffffffff9f5d2c08>] ? smp_call_function_many+0x98/0x900
[   25.305733]  [<ffffffff9f48d3a0>] ? flush_tlb_func+0x130/0x130
[   25.305736]  [<ffffffff9f47fd4d>] ? lookup_address_in_pgd+0x32d/0x440
[   25.305739]  [<ffffffff9f47fd4d>] ? lookup_address_in_pgd+0x32d/0x440
[   25.305742]  [<ffffffff9f480f67>] ? __change_page_attr_set_clr+0x827/0x2340
[   25.305745]  [<ffffffff9f480740>] ? print_split+0x830/0x830
[   25.305748]  [<ffffffff9fe7a688>] ? bitfill_aligned+0x148/0x1a0
[   25.305751]  [<ffffffff9f420446>] ? print_context_stack+0x76/0xe0
[   25.305755]  [<ffffffff9f420446>] ? print_context_stack+0x76/0xe0
[   25.305758]  [<ffffffff9fdbfe01>] ? depot_save_stack+0x181/0x610
[   25.305761]  [<ffffffff9fd1a205>] ? free_cpumask_var+0x15/0x20
[   25.305763]  [<ffffffff9f76e495>] ? save_stack+0xb5/0xd0
[   25.305766]  [<ffffffff9f433d86>] ? save_stack_trace+0x26/0x50
[   25.305769]  [<ffffffff9f76e426>] ? save_stack+0x46/0xd0
[   25.305771]  [<ffffffff9f76eae1>] ? kasan_slab_free+0x71/0xb0
[   25.305774]  [<ffffffff9f76c950>] ? kfree+0x80/0x140
[   25.305777]  [<ffffffff9fd1a205>] ? free_cpumask_var+0x15/0x20
[   25.305780]  [<ffffffff9f457b6e>] ? native_send_call_func_ipi+0x19e/0x3e0
[   25.305783]  [<ffffffff9f5d308f>] ? smp_call_function_many+0x51f/0x900
[   25.305786]  [<ffffffff9f5d3521>] ? on_each_cpu+0x31/0x50
[   25.305789]  [<ffffffff9f483219>] ? change_page_attr_set_clr+0x799/0xa60
[   25.305792]  [<ffffffff9f485a64>] ? set_memory_np+0x34/0x40
[   25.305795]  [<ffffffff9f4773d2>] ? free_init_pages+0x122/0x130
[   25.305797]  [<ffffffff9f4788ea>] ? mark_rodata_ro+0x1ca/0x230
[   25.305800]  [<ffffffffa0c6b114>] ? kernel_init+0x34/0x180
[   25.305803]  [<ffffffffa0c7c00f>] ? ret_from_fork+0x1f/0x40
[   25.305805]  [<ffffffff9f76ab2f>] ? deactivate_slab+0x34f/0x3c0
[   25.305808]  [<ffffffff9f76a08a>] ? alloc_debug_processing+0x5a/0x1b0
[   25.305811]  [<ffffffff9f76b06e>] ? ___slab_alloc.constprop.58+0x2de/0x420
[   25.305814]  [<ffffffff9fd1a0ce>] ? alloc_cpumask_var_node+0x5e/0xf0
[   25.305817]  [<ffffffff9f76e536>] ? kasan_unpoison_shadow+0x36/0x50
[   25.305820]  [<ffffffff9f76e536>] ? kasan_unpoison_shadow+0x36/0x50
[   25.305823]  [<ffffffff9fd4a3d8>] ? __bitmap_weight+0xd8/0x160
[   25.305826]  [<ffffffff9f76eaf7>] ? kasan_slab_free+0x87/0xb0
[   25.305828]  [<ffffffff9f76c950>] ? kfree+0x80/0x140
[   25.305831]  [<ffffffff9fd1a205>] ? free_cpumask_var+0x15/0x20
[   25.305834]  [<ffffffff9f457b6e>] ? native_send_call_func_ipi+0x19e/0x3e0
[   25.305837]  [<ffffffff9f4579d0>] ? native_smp_send_reschedule+0x110/0x110
[   25.305840]  [<ffffffff9fd59b59>] ? _find_next_bit+0xe9/0x120
[   25.305843]  [<ffffffff9fd59bb7>] ? find_next_bit+0x27/0x30
[   25.305846]  [<ffffffff9f5d2c08>] ? smp_call_function_many+0x98/0x900
[   25.305849]  [<ffffffff9f492948>] ? note_page+0xf48/0x1790
[   25.305853]  [<ffffffff9f493639>] ? ptdump_walk_pgd_level_core+0x4a9/0x710
[   25.305856]  [<ffffffff9f493190>] ? note_page+0x1790/0x1790
[   25.305858]  [<ffffffff9f485a64>] ? set_memory_np+0x34/0x40
[   25.305862]  [<ffffffff9f4938e7>] ? ptdump_walk_pgd_level_checkwx+0x17/0x20
[   25.305865]  [<ffffffff9f4788ef>] ? mark_rodata_ro+0x1cf/0x230
[   25.305867]  [<ffffffffa0c6b114>] ? kernel_init+0x34/0x180
[   25.305870]  [<ffffffffa0c7c00f>] ? ret_from_fork+0x1f/0x40
[   25.305873]  [<ffffffffa0c6b0e0>] ? rest_init+0xa0/0xa0
[   25.614915]  3-...: (20987 ticks this GP) idle=943/140000000000001/0 
softirq=146/146 fqs=5247 
[   25.617229]   (t=21313 jiffies g=-222 c=-223 q=6)
[   25.619552] Task dump for CPU 3:
[   25.621852] swapper/0       R  running task        0     1      0 0x00000008
[   25.624211]  ffffffffa1463020 000000003fbfb87f ffff8803acf87c98 
ffffffff9f50d416
[   25.626592]  0000000000000006 0000000000000010 0000000041b58ab3 
ffffffffa12d8e95
[   25.628989]  ffffffff9f50d1f0 ffff8803acf87d30 ffffffff9fd59b59 
0000000000000008
[   25.631408] Call Trace:
[   25.633840]  <IRQ>  [<ffffffff9f50d416>] sched_show_task+0x226/0x380
[   25.636338]  [<ffffffff9f50d1f0>] ? SyS_sched_rr_get_interval+0x250/0x250
[   25.638860]  [<ffffffff9fd59b59>] ? _find_next_bit+0xe9/0x120
[   25.641381]  [<ffffffff9f514f41>] dump_cpu_task+0x71/0x90
[   25.643903]  [<ffffffffa0c60a15>] rcu_dump_cpu_stacks+0x180/0x1a6
[   25.646435]  [<ffffffff9f594576>] rcu_check_callbacks+0x1706/0x17f0
[   25.648966]  [<ffffffff9f62662f>] ? __acct_update_integrals+0x21f/0x2a0
[   25.651491]  [<ffffffff9f59e6c0>] update_process_times+0x30/0x60
[   25.654018]  [<ffffffff9f5c8533>] tick_sched_timer+0xb3/0x420
[   25.656541]  [<ffffffff9f59edb3>] ? __remove_hrtimer+0x73/0x180
[   25.659059]  [<ffffffff9f5c8480>] ? tick_init_highres+0x20/0x20
[   25.661571]  [<ffffffff9f59f52e>] __hrtimer_run_queues+0x25e/0x4e0
[   25.664128]  [<ffffffff9f5a11dc>] hrtimer_interrupt+0x17c/0x450
[   25.666664]  [<ffffffffa0c7d8ef>] smp_trace_apic_timer_interrupt+0xdf/0x140
[   25.669241]  [<ffffffffa0c7d959>] smp_apic_timer_interrupt+0x9/0xb
[   25.671793]  [<ffffffffa0c7d19c>] apic_timer_interrupt+0x7c/0x90
[   25.674336]  <EOI>  [<ffffffff9f492948>] ? note_page+0xf48/0x1790
[   25.676946]  [<ffffffff9f493639>] ptdump_walk_pgd_level_core+0x4a9/0x710
[   25.679576]  [<ffffffff9f493190>] ? note_page+0x1790/0x1790
[   25.682197]  [<ffffffff9f485a64>] ? set_memory_np+0x34/0x40
[   25.684813]  [<ffffffff9f4938e7>] ptdump_walk_pgd_level_checkwx+0x17/0x20
[   25.687463]  [<ffffffff9f4788ef>] mark_rodata_ro+0x1cf/0x230
[   25.690119]  [<ffffffffa0c6b114>] kernel_init+0x34/0x180
[   25.692779]  [<ffffffffa0c7c00f>] ret_from_fork+0x1f/0x40
[   25.695445]  [<ffffffffa0c6b0e0>] ? rest_init+0xa0/0xa0
[   32.049408] CPA self-test:
[   32.253030]  4k 4187648 large 0 gb 0 x 
1837[ffff880000099000-ffff880100000000] miss 268800
[   32.457951]  4k 4187648 large 0 gb 0 x 
1837[ffff880000099000-ffff880100000000] miss 268800
[   32.662578]  4k 4187648 large 0 gb 0 x 
1837[ffff880000099000-ffff880100000000] miss 268800
[   32.665359] ok.

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