[ 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] [] ? depot_save_stack+0x181/0x610 [ 25.305630] [] ? free_cpumask_var+0x15/0x20 [ 25.305635] [] ? save_stack+0xb5/0xd0 [ 25.305638] [] ? save_stack_trace+0x26/0x50 [ 25.305641] [] ? save_stack+0x46/0xd0 [ 25.305644] [] ? kasan_slab_free+0x71/0xb0 [ 25.305646] [] ? kfree+0x80/0x140 [ 25.305649] [] ? free_cpumask_var+0x15/0x20 [ 25.305653] [] ? native_send_call_func_ipi+0x19e/0x3e0 [ 25.305657] [] ? smp_call_function_many+0x51f/0x900 [ 25.305660] [] ? on_each_cpu+0x31/0x50 [ 25.305664] [] ? flush_tlb_all+0x17/0x20 [ 25.305667] [] ? __change_page_attr_set_clr+0x4a2/0x2340 [ 25.305670] [] ? __change_page_attr_set_clr+0x1645/0x2340 [ 25.305673] [] ? change_page_attr_set_clr+0x336/0xa60 [ 25.305676] [] ? set_memory_np+0x34/0x40 [ 25.305679] [] ? free_init_pages+0x122/0x130 [ 25.305682] [] ? mark_rodata_ro+0x1ca/0x230 [ 25.305685] [] ? kernel_init+0x34/0x180 [ 25.305688] [] ? ret_from_fork+0x1f/0x40 [ 25.305691] [] ? alloc_debug_processing+0x5a/0x1b0 [ 25.305694] [] ? ___slab_alloc.constprop.58+0x2de/0x420 [ 25.305697] [] ? alloc_cpumask_var_node+0x5e/0xf0 [ 25.305700] [] ? kasan_unpoison_shadow+0x36/0x50 [ 25.305703] [] ? kasan_unpoison_shadow+0x36/0x50 [ 25.305706] [] ? __bitmap_weight+0xd8/0x160 [ 25.305709] [] ? kasan_slab_free+0x87/0xb0 [ 25.305711] [] ? kfree+0x80/0x140 [ 25.305714] [] ? free_cpumask_var+0x15/0x20 [ 25.305718] [] ? native_send_call_func_ipi+0x19e/0x3e0 [ 25.305721] [] ? native_smp_send_reschedule+0x110/0x110 [ 25.305724] [] ? _find_next_bit+0xe9/0x120 [ 25.305726] [] ? find_next_bit+0x27/0x30 [ 25.305730] [] ? smp_call_function_many+0x98/0x900 [ 25.305733] [] ? flush_tlb_func+0x130/0x130 [ 25.305736] [] ? lookup_address_in_pgd+0x32d/0x440 [ 25.305739] [] ? lookup_address_in_pgd+0x32d/0x440 [ 25.305742] [] ? __change_page_attr_set_clr+0x827/0x2340 [ 25.305745] [] ? print_split+0x830/0x830 [ 25.305748] [] ? bitfill_aligned+0x148/0x1a0 [ 25.305751] [] ? print_context_stack+0x76/0xe0 [ 25.305755] [] ? print_context_stack+0x76/0xe0 [ 25.305758] [] ? depot_save_stack+0x181/0x610 [ 25.305761] [] ? free_cpumask_var+0x15/0x20 [ 25.305763] [] ? save_stack+0xb5/0xd0 [ 25.305766] [] ? save_stack_trace+0x26/0x50 [ 25.305769] [] ? save_stack+0x46/0xd0 [ 25.305771] [] ? kasan_slab_free+0x71/0xb0 [ 25.305774] [] ? kfree+0x80/0x140 [ 25.305777] [] ? free_cpumask_var+0x15/0x20 [ 25.305780] [] ? native_send_call_func_ipi+0x19e/0x3e0 [ 25.305783] [] ? smp_call_function_many+0x51f/0x900 [ 25.305786] [] ? on_each_cpu+0x31/0x50 [ 25.305789] [] ? change_page_attr_set_clr+0x799/0xa60 [ 25.305792] [] ? set_memory_np+0x34/0x40 [ 25.305795] [] ? free_init_pages+0x122/0x130 [ 25.305797] [] ? mark_rodata_ro+0x1ca/0x230 [ 25.305800] [] ? kernel_init+0x34/0x180 [ 25.305803] [] ? ret_from_fork+0x1f/0x40 [ 25.305805] [] ? deactivate_slab+0x34f/0x3c0 [ 25.305808] [] ? alloc_debug_processing+0x5a/0x1b0 [ 25.305811] [] ? ___slab_alloc.constprop.58+0x2de/0x420 [ 25.305814] [] ? alloc_cpumask_var_node+0x5e/0xf0 [ 25.305817] [] ? kasan_unpoison_shadow+0x36/0x50 [ 25.305820] [] ? kasan_unpoison_shadow+0x36/0x50 [ 25.305823] [] ? __bitmap_weight+0xd8/0x160 [ 25.305826] [] ? kasan_slab_free+0x87/0xb0 [ 25.305828] [] ? kfree+0x80/0x140 [ 25.305831] [] ? free_cpumask_var+0x15/0x20 [ 25.305834] [] ? native_send_call_func_ipi+0x19e/0x3e0 [ 25.305837] [] ? native_smp_send_reschedule+0x110/0x110 [ 25.305840] [] ? _find_next_bit+0xe9/0x120 [ 25.305843] [] ? find_next_bit+0x27/0x30 [ 25.305846] [] ? smp_call_function_many+0x98/0x900 [ 25.305849] [] ? note_page+0xf48/0x1790 [ 25.305853] [] ? ptdump_walk_pgd_level_core+0x4a9/0x710 [ 25.305856] [] ? note_page+0x1790/0x1790 [ 25.305858] [] ? set_memory_np+0x34/0x40 [ 25.305862] [] ? ptdump_walk_pgd_level_checkwx+0x17/0x20 [ 25.305865] [] ? mark_rodata_ro+0x1cf/0x230 [ 25.305867] [] ? kernel_init+0x34/0x180 [ 25.305870] [] ? ret_from_fork+0x1f/0x40 [ 25.305873] [] ? 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] [] sched_show_task+0x226/0x380 [ 25.636338] [] ? SyS_sched_rr_get_interval+0x250/0x250 [ 25.638860] [] ? _find_next_bit+0xe9/0x120 [ 25.641381] [] dump_cpu_task+0x71/0x90 [ 25.643903] [] rcu_dump_cpu_stacks+0x180/0x1a6 [ 25.646435] [] rcu_check_callbacks+0x1706/0x17f0 [ 25.648966] [] ? __acct_update_integrals+0x21f/0x2a0 [ 25.651491] [] update_process_times+0x30/0x60 [ 25.654018] [] tick_sched_timer+0xb3/0x420 [ 25.656541] [] ? __remove_hrtimer+0x73/0x180 [ 25.659059] [] ? tick_init_highres+0x20/0x20 [ 25.661571] [] __hrtimer_run_queues+0x25e/0x4e0 [ 25.664128] [] hrtimer_interrupt+0x17c/0x450 [ 25.666664] [] smp_trace_apic_timer_interrupt+0xdf/0x140 [ 25.669241] [] smp_apic_timer_interrupt+0x9/0xb [ 25.671793] [] apic_timer_interrupt+0x7c/0x90 [ 25.674336] [] ? note_page+0xf48/0x1790 [ 25.676946] [] ptdump_walk_pgd_level_core+0x4a9/0x710 [ 25.679576] [] ? note_page+0x1790/0x1790 [ 25.682197] [] ? set_memory_np+0x34/0x40 [ 25.684813] [] ptdump_walk_pgd_level_checkwx+0x17/0x20 [ 25.687463] [] mark_rodata_ro+0x1cf/0x230 [ 25.690119] [] kernel_init+0x34/0x180 [ 25.692779] [] ret_from_fork+0x1f/0x40 [ 25.695445] [] ? 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.