gistfile1.txt

[    6.601024] swapper/1: page allocation failure: order:2, mode:0x2000000(GFP_NOWAIT)
[    6.604886] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.7.0-rc7-mm1-00428-gc3e13e4dab1b-dirty #2878
[    6.604886] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014
[    6.604886]  0000000000000001 ffff88001f807690 ffffffff81c8fb0d 1ffff10003f00ed6
[    6.604886]  0000000000000000 0000000000000002 ffff88001f807750 ffff88001f8077a8
[    6.604886]  ffffffff813e728b ffff88001f8077a8 0200000000000000 0000000041b58ab3
[    6.604886] Call Trace:
[    6.604886]  <IRQ>  [<ffffffff81c8fb0d>] dump_stack+0x95/0xe8
[    6.604886]  [<ffffffff813e728b>] warn_alloc_failed+0x1cb/0x250
[    6.604886]  [<ffffffff813e70c0>] ? zone_watermark_ok_safe+0x250/0x250
[    6.604886]  [<ffffffff813e7f4c>] __alloc_pages_nodemask+0x92c/0x1fe0
[    6.604886]  [<ffffffff81cd5780>] ? _find_next_bit.part.0+0xe0/0x120
[    6.604886]  [<ffffffff81cd5780>] ? _find_next_bit.part.0+0xe0/0x120
[    6.604886]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.604886]  [<ffffffff813e7620>] ? __free_pages+0x90/0x90
[    6.604886]  [<ffffffff81c8f6be>] ? cpumask_next_and+0x8e/0xb0
[    6.604886]  [<ffffffff811c12f9>] ? find_busiest_group+0x389/0x2480
[    6.604886]  [<ffffffff811939ac>] ? account_entity_enqueue+0x35c/0x4b0
[    6.604886]  [<ffffffff81245617>] ? debug_lockdep_rcu_enabled+0x77/0x90
[    6.604886]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[    6.604886]  [<ffffffff8105d05b>] ? print_context_stack+0x7b/0x100
[    6.604886]  [<ffffffff814d42dc>] alloc_pages_current+0xbc/0x1f0
[    6.604886]  [<ffffffff81d24d5f>] depot_save_stack+0x4ff/0x5b0
[    6.604886]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    6.604886]  [<ffffffff814eb4c7>] kasan_slab_free+0x157/0x180
[    6.604886]  [<ffffffff8107c58b>] ? save_stack_trace+0x2b/0x50
[    6.604886]  [<ffffffff814eb453>] ? kasan_slab_free+0xe3/0x180
[    6.604886]  [<ffffffff814e73e5>] ? kmem_cache_free+0x95/0x300
[    6.604886]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    6.604886]  [<ffffffff813d59a9>] ? mempool_free+0xd9/0x1d0
[    6.604886]  [<ffffffff81be96e5>] ? bio_free+0x145/0x220
[    6.604886]  [<ffffffff81bea8bf>] ? bio_put+0x8f/0xb0
[    6.604886]  [<ffffffff814a7bfe>] ? end_swap_bio_write+0x22e/0x310
[    6.604886]  [<ffffffff81bf1687>] ? bio_endio+0x187/0x1f0
[    6.604886]  [<ffffffff81c0e89b>] ? blk_update_request+0x1bb/0xc30
[    6.604886]  [<ffffffff81c3238c>] ? blk_mq_end_request+0x4c/0x130
[    6.604886]  [<ffffffff8208a330>] ? virtblk_request_done+0xb0/0x2a0
[    6.604886]  [<ffffffff81c2d17d>] ? __blk_mq_complete_request_remote+0x5d/0x70
[    6.604886]  [<ffffffff8129fe3c>] ? flush_smp_call_function_queue+0xdc/0x3a0
[    6.604886]  [<ffffffff812a0548>] ? generic_smp_call_function_single_interrupt+0x18/0x20
[    6.604886]  [<ffffffff8109c654>] ? smp_call_function_single_interrupt+0x64/0x90
[    6.604886]  [<ffffffff829584a9>] ? call_function_single_interrupt+0x89/0x90
[    6.604886]  [<ffffffff8106ce1f>] ? arch_cpu_idle+0xf/0x20
[    6.604886]  [<ffffffff811e12a2>] ? default_idle_call+0x52/0x70
[    6.604886]  [<ffffffff811e173b>] ? cpu_startup_entry+0x47b/0x620
[    6.604886]  [<ffffffff8109eda6>] ? start_secondary+0x246/0x2d0
[    6.604886]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    6.604886]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.604886]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.604886]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.604886]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[    6.604886]  [<ffffffff814e73c5>] ? kmem_cache_free+0x75/0x300
[    6.604886]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[    6.604886]  [<ffffffff814e747f>] ? kmem_cache_free+0x12f/0x300
[    6.604886]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    6.604886]  [<ffffffff814e73e5>] kmem_cache_free+0x95/0x300
[    6.604886]  [<ffffffff813d5aa0>] ? mempool_free+0x1d0/0x1d0
[    6.604886]  [<ffffffff813d5ac2>] mempool_free_slab+0x22/0x30
[    6.604886]  [<ffffffff813d59a9>] mempool_free+0xd9/0x1d0
[    6.604886]  [<ffffffff81be96e5>] bio_free+0x145/0x220
[    6.604886]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    6.604886]  [<ffffffff81bea8bf>] bio_put+0x8f/0xb0
[    6.604886]  [<ffffffff814a7bfe>] end_swap_bio_write+0x22e/0x310
[    6.604886]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    6.604886]  [<ffffffff81bf1687>] bio_endio+0x187/0x1f0
[    6.604886]  [<ffffffff81c0e89b>] blk_update_request+0x1bb/0xc30
[    6.604886]  [<ffffffff81c2d120>] ? blkdev_issue_zeroout+0x3f0/0x3f0
[    6.604886]  [<ffffffff81c3238c>] blk_mq_end_request+0x4c/0x130
[    6.604886]  [<ffffffff8208a330>] virtblk_request_done+0xb0/0x2a0
[    6.604886]  [<ffffffff81c2d17d>] __blk_mq_complete_request_remote+0x5d/0x70
[    6.604886]  [<ffffffff8129fe3c>] flush_smp_call_function_queue+0xdc/0x3a0
[    6.604886]  [<ffffffff812a0548>] generic_smp_call_function_single_interrupt+0x18/0x20
[    6.604886]  [<ffffffff8109c654>] smp_call_function_single_interrupt+0x64/0x90
[    6.604886]  [<ffffffff829584a9>] call_function_single_interrupt+0x89/0x90
[    6.604886]  <EOI>  [<ffffffff8106ba11>] ? default_idle+0x21/0x2f0
[    6.604886]  [<ffffffff8106ba0f>] ? default_idle+0x1f/0x2f0
[    6.604886]  [<ffffffff8106ce1f>] arch_cpu_idle+0xf/0x20
[    6.604886]  [<ffffffff811e12a2>] default_idle_call+0x52/0x70
[    6.604886]  [<ffffffff811e173b>] cpu_startup_entry+0x47b/0x620
[    6.604886]  [<ffffffff8109eda6>] start_secondary+0x246/0x2d0
[    6.691519] kswapd3: page allocation failure: order:2, mode:0x2000000(GFP_NOWAIT)
[    6.692010] CPU: 0 PID: 49 Comm: kswapd3 Not tainted 4.7.0-rc7-mm1-00428-gc3e13e4dab1b-dirty #2878
[    6.692010] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014
[    6.692010]  0000000000000000 ffff88000f807690 ffffffff81c8fb0d 1ffff10001f00ed6
[    6.692010]  0000000000000000 0000000000000002 ffff88000f807750 ffff88000f8077a8
[    6.692010]  ffffffff813e728b ffff88000f8077a8 0200000000000000 0000000041b58ab3
[    6.692010] Call Trace:
[    6.692010]  <IRQ>  [<ffffffff81c8fb0d>] dump_stack+0x95/0xe8
[    6.692010]  [<ffffffff813e728b>] warn_alloc_failed+0x1cb/0x250
[    6.692010]  [<ffffffff813e70c0>] ? zone_watermark_ok_safe+0x250/0x250
[    6.692010]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[    6.692010]  [<ffffffff813e7f4c>] __alloc_pages_nodemask+0x92c/0x1fe0
[    6.692010]  [<ffffffff81d24a17>] ? depot_save_stack+0x1b7/0x5b0
[    6.692010]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    6.692010]  [<ffffffff81313595>] ? is_ftrace_trampoline+0xe5/0x120
[    6.692010]  [<ffffffff813e7620>] ? __free_pages+0x90/0x90
[    6.692010]  [<ffffffff8105c3d6>] ? dump_trace+0x126/0x330
[    6.692010]  [<ffffffff81d24a17>] ? depot_save_stack+0x1b7/0x5b0
[    6.692010]  [<ffffffff81245617>] ? debug_lockdep_rcu_enabled+0x77/0x90
[    6.692010]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[    6.692010]  [<ffffffff8105d05b>] ? print_context_stack+0x7b/0x100
[    6.692010]  [<ffffffff814d42dc>] alloc_pages_current+0xbc/0x1f0
[    6.692010]  [<ffffffff81d24d5f>] depot_save_stack+0x4ff/0x5b0
[    6.692010]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    6.692010]  [<ffffffff814eb4c7>] kasan_slab_free+0x157/0x180
[    6.692010]  [<ffffffff8107c58b>] ? save_stack_trace+0x2b/0x50
[    6.692010]  [<ffffffff814eb453>] ? kasan_slab_free+0xe3/0x180
[    6.692010]  [<ffffffff814e73e5>] ? kmem_cache_free+0x95/0x300
[    6.692010]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    6.692010]  [<ffffffff813d59a9>] ? mempool_free+0xd9/0x1d0
[    6.692010]  [<ffffffff81be96e5>] ? bio_free+0x145/0x220
[    6.692010]  [<ffffffff81bea8bf>] ? bio_put+0x8f/0xb0
[    6.692010]  [<ffffffff814a7bfe>] ? end_swap_bio_write+0x22e/0x310
[    6.692010]  [<ffffffff81bf1687>] ? bio_endio+0x187/0x1f0
[    6.692010]  [<ffffffff81c0e89b>] ? blk_update_request+0x1bb/0xc30
[    6.692010]  [<ffffffff81c3238c>] ? blk_mq_end_request+0x4c/0x130
[    6.692010]  [<ffffffff8208a330>] ? virtblk_request_done+0xb0/0x2a0
[    6.692010]  [<ffffffff81c2d17d>] ? __blk_mq_complete_request_remote+0x5d/0x70
[    6.692010]  [<ffffffff8129fe3c>] ? flush_smp_call_function_queue+0xdc/0x3a0
[    6.692010]  [<ffffffff812a0548>] ? generic_smp_call_function_single_interrupt+0x18/0x20
[    6.692010]  [<ffffffff8109c654>] ? smp_call_function_single_interrupt+0x64/0x90
[    6.692010]  [<ffffffff829584a9>] ? call_function_single_interrupt+0x89/0x90
[    6.692010]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[    6.692010]  [<ffffffff8105d05b>] ? print_context_stack+0x7b/0x100
[    6.692010]  [<ffffffff8105c3cc>] ? dump_trace+0x11c/0x330
[    6.692010]  [<ffffffff8107c58b>] ? save_stack_trace+0x2b/0x50
[    6.692010]  [<ffffffff814eb60d>] ? kasan_kmalloc+0x11d/0x1b0
[    6.692010]  [<ffffffff814eb6b2>] ? kasan_slab_alloc+0x12/0x20
[    6.692010]  [<ffffffff814e6728>] ? kmem_cache_alloc+0xd8/0x2d0
[    6.692010]  [<ffffffff813d48a9>] ? mempool_alloc_slab+0x49/0x60
[    6.692010]  [<ffffffff813d55ee>] ? mempool_alloc+0x17e/0x460
[    6.692010]  [<ffffffff81be9f18>] ? bio_alloc_bioset+0x1f8/0x790
[    6.692010]  [<ffffffff814a8374>] ? get_swap_bio+0x54/0x140
[    6.692010]  [<ffffffff814a8f28>] ? __swap_writepage+0x638/0x940
[    6.692010]  [<ffffffff814a926a>] ? swap_writepage+0x3a/0x70
[    6.692010]  [<ffffffff8141376b>] ? shrink_page_list+0x1bdb/0x2f00
[    6.692010]  [<ffffffff81416038>] ? shrink_inactive_list+0x538/0xc70
[    6.692010]  [<ffffffff81417a1b>] ? shrink_node_memcg+0xa1b/0x1160
[    6.692010]  [<ffffffff81418436>] ? shrink_node+0x2d6/0xc60
[    6.692010]  [<ffffffff8141bf1e>] ? kswapd+0x82e/0x1460
[    6.692010]  [<ffffffff81156d4a>] ? kthread+0x24a/0x2e0
[    6.692010]  [<ffffffff8295773f>] ? ret_from_fork+0x1f/0x40
[    6.692010]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.692010]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[    6.692010]  [<ffffffff814e73c5>] ? kmem_cache_free+0x75/0x300
[    6.692010]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[    6.692010]  [<ffffffff814e747f>] ? kmem_cache_free+0x12f/0x300
[    6.692010]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    6.692010]  [<ffffffff814e73e5>] kmem_cache_free+0x95/0x300
[    6.692010]  [<ffffffff813d5aa0>] ? mempool_free+0x1d0/0x1d0
[    6.692010]  [<ffffffff813d5ac2>] mempool_free_slab+0x22/0x30
[    6.692010]  [<ffffffff813d59a9>] mempool_free+0xd9/0x1d0
[    6.692010]  [<ffffffff81be96e5>] bio_free+0x145/0x220
[    6.692010]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    6.692010]  [<ffffffff81bea8bf>] bio_put+0x8f/0xb0
[    6.692010]  [<ffffffff814a7bfe>] end_swap_bio_write+0x22e/0x310
[    6.692010]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    6.692010]  [<ffffffff81bf1687>] bio_endio+0x187/0x1f0
[    6.692010]  [<ffffffff81c0e89b>] blk_update_request+0x1bb/0xc30
[    6.692010]  [<ffffffff81c2d120>] ? blkdev_issue_zeroout+0x3f0/0x3f0
[    6.692010]  [<ffffffff81c3238c>] blk_mq_end_request+0x4c/0x130
[    6.692010]  [<ffffffff8208a330>] virtblk_request_done+0xb0/0x2a0
[    6.692010]  [<ffffffff81c2d17d>] __blk_mq_complete_request_remote+0x5d/0x70
[    6.692010]  [<ffffffff8129fe3c>] flush_smp_call_function_queue+0xdc/0x3a0
[    6.692010]  [<ffffffff812a0548>] generic_smp_call_function_single_interrupt+0x18/0x20
[    6.692010]  [<ffffffff8109c654>] smp_call_function_single_interrupt+0x64/0x90
[    6.692010]  [<ffffffff829584a9>] call_function_single_interrupt+0x89/0x90
[    6.692010]  <EOI>  [<ffffffff814eb60d>] ? kasan_kmalloc+0x11d/0x1b0
[    6.692010]  [<ffffffff8131355d>] ? is_ftrace_trampoline+0xad/0x120
[    6.692010]  [<ffffffff8131354d>] ? is_ftrace_trampoline+0x9d/0x120
[    6.692010]  [<ffffffff81153788>] __kernel_text_address+0x78/0xa0
[    6.692010]  [<ffffffff8105d05b>] print_context_stack+0x7b/0x100
[    6.692010]  [<ffffffff8105c3cc>] dump_trace+0x11c/0x330
[    6.692010]  [<ffffffff81313595>] ? is_ftrace_trampoline+0xe5/0x120
[    6.692010]  [<ffffffff8107c58b>] save_stack_trace+0x2b/0x50
[    6.692010]  [<ffffffff814eb60d>] kasan_kmalloc+0x11d/0x1b0
[    6.692010]  [<ffffffff8107c58b>] ? save_stack_trace+0x2b/0x50
[    6.692010]  [<ffffffff814eb60d>] ? kasan_kmalloc+0x11d/0x1b0
[    6.692010]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    6.692010]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.692010]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[    6.692010]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    6.692010]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.692010]  [<ffffffff813d48a9>] ? mempool_alloc_slab+0x49/0x60
[    6.692010]  [<ffffffff814eb6b2>] kasan_slab_alloc+0x12/0x20
[    6.692010]  [<ffffffff814e6728>] kmem_cache_alloc+0xd8/0x2d0
[    6.692010]  [<ffffffff813d48a9>] mempool_alloc_slab+0x49/0x60
[    6.692010]  [<ffffffff813d55ee>] mempool_alloc+0x17e/0x460
[    6.692010]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.692010]  [<ffffffff813d5470>] ? mempool_resize+0x600/0x600
[    6.692010]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.692010]  [<ffffffff81be9f18>] bio_alloc_bioset+0x1f8/0x790
[    6.692010]  [<ffffffff81be9d20>] ? bio_chain+0xd0/0xd0
[    6.692010]  [<ffffffff811f9870>] ? debug_show_all_locks+0x290/0x290
[    6.692010]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    6.692010]  [<ffffffff814a8374>] get_swap_bio+0x54/0x140
[    6.692010]  [<ffffffff814a8f28>] __swap_writepage+0x638/0x940
[    6.692010]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    6.692010]  [<ffffffff814a88f0>] ? generic_swapfile_activate+0x490/0x490
[    6.692010]  [<ffffffff814abd45>] ? swap_info_get+0x165/0x240
[    6.692010]  [<ffffffff814affda>] ? page_swapcount+0xba/0xf0
[    6.692010]  [<ffffffff82956ba1>] ? _raw_spin_unlock+0x31/0x50
[    6.692010]  [<ffffffff814affdf>] ? page_swapcount+0xbf/0xf0
[    6.692010]  [<ffffffff814a926a>] swap_writepage+0x3a/0x70
[    6.692010]  [<ffffffff8141376b>] shrink_page_list+0x1bdb/0x2f00
[    6.692010]  [<ffffffff81411b90>] ? putback_lru_page+0x3b0/0x3b0
[    6.692010]  [<ffffffff81cef9ac>] ? __this_cpu_preempt_check+0x1c/0x20
[    6.692010]  [<ffffffff81438ed4>] ? __mod_node_page_state+0x94/0xe0
[    6.692010]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    6.692010]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.692010]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.692010]  [<ffffffff811ee78d>] ? get_lock_stats+0x1d/0x90
[    6.692010]  [<ffffffff8140fcb0>] ? __isolate_lru_page+0x3b0/0x3b0
[    6.692010]  [<ffffffff81cef98c>] ? debug_smp_processor_id+0x1c/0x20
[    6.692010]  [<ffffffff81353ba2>] ? time_hardirqs_on+0xb2/0x330
[    6.692010]  [<ffffffff811f6535>] ? trace_hardirqs_on_caller+0x405/0x590
[    6.692010]  [<ffffffff81416038>] shrink_inactive_list+0x538/0xc70
[    6.692010]  [<ffffffff81415b00>] ? putback_inactive_pages+0xaa0/0xaa0
[    6.692010]  [<ffffffff829566ad>] ? _raw_spin_lock+0x6d/0x80
[    6.692010]  [<ffffffff81493733>] ? page_referenced_one+0x193/0x350
[    6.692010]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    6.692010]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.692010]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    6.692010]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.692010]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.692010]  [<ffffffff81cd5780>] ? _find_next_bit.part.0+0xe0/0x120
[    6.692010]  [<ffffffff81cd57fe>] ? find_next_bit+0x3e/0x50
[    6.692010]  [<ffffffff8140e654>] ? pgdat_reclaimable_pages+0x764/0x9d0
[    6.692010]  [<ffffffff8140f2ec>] ? pgdat_reclaimable+0x13c/0x1d0
[    6.692010]  [<ffffffff81417a1b>] shrink_node_memcg+0xa1b/0x1160
[    6.692010]  [<ffffffff81417000>] ? shrink_active_list+0x890/0x890
[    6.692010]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    6.692010]  [<ffffffff81cef98c>] ? debug_smp_processor_id+0x1c/0x20
[    6.692010]  [<ffffffff8151f208>] ? mem_cgroup_iter+0x1b8/0xd10
[    6.692010]  [<ffffffff82956c2c>] ? _raw_spin_unlock_irq+0x2c/0x50
[    6.692010]  [<ffffffff81418436>] shrink_node+0x2d6/0xc60
[    6.692010]  [<ffffffff81418160>] ? shrink_node_memcg+0x1160/0x1160
[    6.692010]  [<ffffffff8140f3cc>] ? lruvec_lru_size+0x4c/0xa0
[    6.692010]  [<ffffffff8141bf1e>] kswapd+0x82e/0x1460
[    6.692010]  [<ffffffff8141b6f0>] ? mem_cgroup_shrink_node+0x600/0x600
[    6.692010]  [<ffffffff81171cc8>] ? finish_task_switch+0x178/0x5b0
[    6.692010]  [<ffffffff82956c2c>] ? _raw_spin_unlock_irq+0x2c/0x50
[    6.692010]  [<ffffffff811f6535>] ? trace_hardirqs_on_caller+0x405/0x590
[    6.692010]  [<ffffffff82956c37>] ? _raw_spin_unlock_irq+0x37/0x50
[    6.692010]  [<ffffffff81171cc8>] ? finish_task_switch+0x178/0x5b0
[    6.692010]  [<ffffffff811de8f0>] ? __wake_up_common+0x150/0x150
[    6.692010]  [<ffffffff82948c3e>] ? __schedule+0x55e/0x1b60
[    6.692010]  [<ffffffff81156a32>] ? __kthread_parkme+0x172/0x240
[    6.692010]  [<ffffffff81156d4a>] kthread+0x24a/0x2e0
[    6.692010]  [<ffffffff8141b6f0>] ? mem_cgroup_shrink_node+0x600/0x600
[    6.692010]  [<ffffffff81156b00>] ? __kthread_parkme+0x240/0x240
[    6.692010]  [<ffffffff81171c9c>] ? finish_task_switch+0x14c/0x5b0
[    6.692010]  [<ffffffff8295773f>] ret_from_fork+0x1f/0x40
[    6.692010]  [<ffffffff81156b00>] ? __kthread_parkme+0x240/0x240
[    8.023418] kswapd1: page allocation failure: order:2, mode:0x2000000(GFP_NOWAIT)
[    8.024020] CPU: 1 PID: 47 Comm: kswapd1 Not tainted 4.7.0-rc7-mm1-00428-gc3e13e4dab1b-dirty #2878
[    8.024020] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014
[    8.024020]  0000000000000001 ffff88001f807690 ffffffff81c8fb0d 1ffff10003f00ed6
[    8.024020]  0000000000000000 0000000000000002 ffff88001f807750 ffff88001f8077a8
[    8.024020]  ffffffff813e728b ffff88001f8077a8 0200000000000000 0000000041b58ab3
[    8.024020] Call Trace:
[    8.024020]  <IRQ>  [<ffffffff81c8fb0d>] dump_stack+0x95/0xe8
[    8.024020]  [<ffffffff813e728b>] warn_alloc_failed+0x1cb/0x250
[    8.024020]  [<ffffffff813e70c0>] ? zone_watermark_ok_safe+0x250/0x250
[    8.024020]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[    8.024020]  [<ffffffff813e7f4c>] __alloc_pages_nodemask+0x92c/0x1fe0
[    8.024020]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.024020]  [<ffffffff81313595>] ? is_ftrace_trampoline+0xe5/0x120
[    8.024020]  [<ffffffff813e7620>] ? __free_pages+0x90/0x90
[    8.024020]  [<ffffffff8105c3d6>] ? dump_trace+0x126/0x330
[    8.024020]  [<ffffffff81d24a17>] ? depot_save_stack+0x1b7/0x5b0
[    8.024020]  [<ffffffff81245617>] ? debug_lockdep_rcu_enabled+0x77/0x90
[    8.024020]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[    8.024020]  [<ffffffff8105d05b>] ? print_context_stack+0x7b/0x100
[    8.024020]  [<ffffffff814d42dc>] alloc_pages_current+0xbc/0x1f0
[    8.024020]  [<ffffffff81d24d5f>] depot_save_stack+0x4ff/0x5b0
[    8.024020]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    8.024020]  [<ffffffff814eb4c7>] kasan_slab_free+0x157/0x180
[    8.024020]  [<ffffffff8107c58b>] ? save_stack_trace+0x2b/0x50
[    8.024020]  [<ffffffff814eb453>] ? kasan_slab_free+0xe3/0x180
[    8.024020]  [<ffffffff814e73e5>] ? kmem_cache_free+0x95/0x300
[    8.024020]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    8.024020]  [<ffffffff813d59a9>] ? mempool_free+0xd9/0x1d0
[    8.024020]  [<ffffffff81be96e5>] ? bio_free+0x145/0x220
[    8.024020]  [<ffffffff81bea8bf>] ? bio_put+0x8f/0xb0
[    8.024020]  [<ffffffff814a7bfe>] ? end_swap_bio_write+0x22e/0x310
[    8.024020]  [<ffffffff81bf1687>] ? bio_endio+0x187/0x1f0
[    8.024020]  [<ffffffff81c0e89b>] ? blk_update_request+0x1bb/0xc30
[    8.024020]  [<ffffffff81c3238c>] ? blk_mq_end_request+0x4c/0x130
[    8.024020]  [<ffffffff8208a330>] ? virtblk_request_done+0xb0/0x2a0
[    8.024020]  [<ffffffff81c2d17d>] ? __blk_mq_complete_request_remote+0x5d/0x70
[    8.024020]  [<ffffffff8129fe3c>] ? flush_smp_call_function_queue+0xdc/0x3a0
[    8.024020]  [<ffffffff812a0548>] ? generic_smp_call_function_single_interrupt+0x18/0x20
[    8.024020]  [<ffffffff8109c654>] ? smp_call_function_single_interrupt+0x64/0x90
[    8.024020]  [<ffffffff829584a9>] ? call_function_single_interrupt+0x89/0x90
[    8.024020]  [<ffffffff81c36b98>] ? blk_sq_make_request+0x5d8/0xca0
[    8.024020]  [<ffffffff81c0b05e>] ? generic_make_request+0x30e/0x660
[    8.024020]  [<ffffffff81c0b540>] ? submit_bio+0x190/0x470
[    8.024020]  [<ffffffff814a8fd8>] ? __swap_writepage+0x6e8/0x940
[    8.024020]  [<ffffffff814a926a>] ? swap_writepage+0x3a/0x70
[    8.024020]  [<ffffffff8141376b>] ? shrink_page_list+0x1bdb/0x2f00
[    8.024020]  [<ffffffff81416038>] ? shrink_inactive_list+0x538/0xc70
[    8.024020]  [<ffffffff81417a1b>] ? shrink_node_memcg+0xa1b/0x1160
[    8.024020]  [<ffffffff81418436>] ? shrink_node+0x2d6/0xc60
[    8.024020]  [<ffffffff8141bf1e>] ? kswapd+0x82e/0x1460
[    8.024020]  [<ffffffff81156d4a>] ? kthread+0x24a/0x2e0
[    8.024020]  [<ffffffff8295773f>] ? ret_from_fork+0x1f/0x40
[    8.024020]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    8.024020]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.024020]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.024020]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.024020]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[    8.024020]  [<ffffffff814e73c5>] ? kmem_cache_free+0x75/0x300
[    8.024020]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[    8.024020]  [<ffffffff814e747f>] ? kmem_cache_free+0x12f/0x300
[    8.024020]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    8.024020]  [<ffffffff814e73e5>] kmem_cache_free+0x95/0x300
[    8.024020]  [<ffffffff813d5aa0>] ? mempool_free+0x1d0/0x1d0
[    8.024020]  [<ffffffff813d5ac2>] mempool_free_slab+0x22/0x30
[    8.024020]  [<ffffffff813d59a9>] mempool_free+0xd9/0x1d0
[    8.024020]  [<ffffffff81be96e5>] bio_free+0x145/0x220
[    8.024020]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    8.024020]  [<ffffffff81bea8bf>] bio_put+0x8f/0xb0
[    8.024020]  [<ffffffff814a7bfe>] end_swap_bio_write+0x22e/0x310
[    8.024020]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    8.024020]  [<ffffffff81bf1687>] bio_endio+0x187/0x1f0
[    8.024020]  [<ffffffff81c0e89b>] blk_update_request+0x1bb/0xc30
[    8.024020]  [<ffffffff81c2d120>] ? blkdev_issue_zeroout+0x3f0/0x3f0
[    8.024020]  [<ffffffff81c3238c>] blk_mq_end_request+0x4c/0x130
[    8.024020]  [<ffffffff8208a330>] virtblk_request_done+0xb0/0x2a0
[    8.024020]  [<ffffffff81c2d17d>] __blk_mq_complete_request_remote+0x5d/0x70
[    8.024020]  [<ffffffff8129fe3c>] flush_smp_call_function_queue+0xdc/0x3a0
[    8.024020]  [<ffffffff812a0548>] generic_smp_call_function_single_interrupt+0x18/0x20
[    8.024020]  [<ffffffff8109c654>] smp_call_function_single_interrupt+0x64/0x90
[    8.024020]  [<ffffffff829584a9>] call_function_single_interrupt+0x89/0x90
[    8.024020]  <EOI>  [<ffffffff81c0dd14>] ? blk_attempt_plug_merge+0x1d4/0x2c0
[    8.024020]  [<ffffffff81c0dd0c>] ? blk_attempt_plug_merge+0x1cc/0x2c0
[    8.024020]  [<ffffffff81c36b98>] blk_sq_make_request+0x5d8/0xca0
[    8.024020]  [<ffffffff81c365c0>] ? blk_mq_insert_requests+0x940/0x940
[    8.024020]  [<ffffffff81c07d20>] ? blk_exit_rl+0x60/0x60
[    8.024020]  [<ffffffff81c027b0>] ? handle_bad_sector+0x1e0/0x1e0
[    8.024020]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    8.024020]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.024020]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.024020]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.024020]  [<ffffffff81c0b05e>] generic_make_request+0x30e/0x660
[    8.024020]  [<ffffffff81c0ad50>] ? blk_plug_queued_count+0x160/0x160
[    8.024020]  [<ffffffff81cef98c>] ? debug_smp_processor_id+0x1c/0x20
[    8.024020]  [<ffffffff81353ba2>] ? time_hardirqs_on+0xb2/0x330
[    8.024020]  [<ffffffff8152890b>] ? unlock_page_memcg+0x7b/0x130
[    8.024020]  [<ffffffff81c0b540>] submit_bio+0x190/0x470
[    8.024020]  [<ffffffff811dff60>] ? woken_wake_function+0x60/0x60
[    8.024020]  [<ffffffff81c0b3b0>] ? generic_make_request+0x660/0x660
[    8.024020]  [<ffffffff813f769d>] ? __test_set_page_writeback+0x36d/0x8c0
[    8.024020]  [<ffffffff814a8fd8>] __swap_writepage+0x6e8/0x940
[    8.024020]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    8.024020]  [<ffffffff814a88f0>] ? generic_swapfile_activate+0x490/0x490
[    8.024020]  [<ffffffff814abd45>] ? swap_info_get+0x165/0x240
[    8.024020]  [<ffffffff814affda>] ? page_swapcount+0xba/0xf0
[    8.024020]  [<ffffffff82956ba1>] ? _raw_spin_unlock+0x31/0x50
[    8.024020]  [<ffffffff814affdf>] ? page_swapcount+0xbf/0xf0
[    8.024020]  [<ffffffff814a926a>] swap_writepage+0x3a/0x70
[    8.024020]  [<ffffffff8141376b>] shrink_page_list+0x1bdb/0x2f00
[    8.024020]  [<ffffffff81411b90>] ? putback_lru_page+0x3b0/0x3b0
[    8.024020]  [<ffffffff81cef9ac>] ? __this_cpu_preempt_check+0x1c/0x20
[    8.024020]  [<ffffffff81438ed4>] ? __mod_node_page_state+0x94/0xe0
[    8.024020]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    8.024020]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.024020]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.024020]  [<ffffffff811ee78d>] ? get_lock_stats+0x1d/0x90
[    8.024020]  [<ffffffff8140fcb0>] ? __isolate_lru_page+0x3b0/0x3b0
[    8.024020]  [<ffffffff81cef98c>] ? debug_smp_processor_id+0x1c/0x20
[    8.024020]  [<ffffffff81353ba2>] ? time_hardirqs_on+0xb2/0x330
[    8.024020]  [<ffffffff811f6535>] ? trace_hardirqs_on_caller+0x405/0x590
[    8.024020]  [<ffffffff81416038>] shrink_inactive_list+0x538/0xc70
[    8.024020]  [<ffffffff81415b00>] ? putback_inactive_pages+0xaa0/0xaa0
[    8.024020]  [<ffffffff81416770>] ? shrink_inactive_list+0xc70/0xc70
[    8.024020]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    8.024020]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.024020]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.024020]  [<ffffffff81cd5780>] ? _find_next_bit.part.0+0xe0/0x120
[    8.024020]  [<ffffffff8140e654>] ? pgdat_reclaimable_pages+0x764/0x9d0
[    8.024020]  [<ffffffff8140f2ec>] ? pgdat_reclaimable+0x13c/0x1d0
[    8.024020]  [<ffffffff8140f3cc>] ? lruvec_lru_size+0x4c/0xa0
[    8.024020]  [<ffffffff81417a1b>] shrink_node_memcg+0xa1b/0x1160
[    8.024020]  [<ffffffff81417000>] ? shrink_active_list+0x890/0x890
[    8.024020]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.024020]  [<ffffffff81cef98c>] ? debug_smp_processor_id+0x1c/0x20
[    8.024020]  [<ffffffff8151f208>] ? mem_cgroup_iter+0x1b8/0xd10
[    8.024020]  [<ffffffff82956c2c>] ? _raw_spin_unlock_irq+0x2c/0x50
[    8.024020]  [<ffffffff81418436>] shrink_node+0x2d6/0xc60
[    8.024020]  [<ffffffff81418160>] ? shrink_node_memcg+0x1160/0x1160
[    8.024020]  [<ffffffff8140f3cc>] ? lruvec_lru_size+0x4c/0xa0
[    8.024020]  [<ffffffff8141bf1e>] kswapd+0x82e/0x1460
[    8.024020]  [<ffffffff8141b6f0>] ? mem_cgroup_shrink_node+0x600/0x600
[    8.024020]  [<ffffffff81171cc8>] ? finish_task_switch+0x178/0x5b0
[    8.024020]  [<ffffffff82956c2c>] ? _raw_spin_unlock_irq+0x2c/0x50
[    8.024020]  [<ffffffff811f6535>] ? trace_hardirqs_on_caller+0x405/0x590
[    8.024020]  [<ffffffff82956c37>] ? _raw_spin_unlock_irq+0x37/0x50
[    8.024020]  [<ffffffff81171cc8>] ? finish_task_switch+0x178/0x5b0
[    8.024020]  [<ffffffff811de8f0>] ? __wake_up_common+0x150/0x150
[    8.024020]  [<ffffffff82948c3e>] ? __schedule+0x55e/0x1b60
[    8.024020]  [<ffffffff81156a32>] ? __kthread_parkme+0x172/0x240
[    8.024020]  [<ffffffff81156d4a>] kthread+0x24a/0x2e0
[    8.024020]  [<ffffffff8141b6f0>] ? mem_cgroup_shrink_node+0x600/0x600
[    8.024020]  [<ffffffff81156b00>] ? __kthread_parkme+0x240/0x240
[    8.024020]  [<ffffffff81171c9c>] ? finish_task_switch+0x14c/0x5b0
[    8.024020]  [<ffffffff8295773f>] ret_from_fork+0x1f/0x40
[    8.024020]  [<ffffffff81156b00>] ? __kthread_parkme+0x240/0x240
[    8.107919] usemem: page allocation failure: order:2, mode:0x2000000(GFP_NOWAIT)
[    8.108645] CPU: 1 PID: 131 Comm: usemem Not tainted 4.7.0-rc7-mm1-00428-gc3e13e4dab1b-dirty #2878
[    8.109404] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014
[    8.110359]  0000000000000001 ffff88001f807690 ffffffff81c8fb0d 1ffff10003f00ed6
[    8.111061]  0000000000000000 0000000000000002 ffff88001f807750 ffff88001f8077a8
[    8.111100]  ffffffff813e728b ffff88001f8077a8 0200000000000000 0000000041b58ab3
[    8.111100] Call Trace:
[    8.111100]  <IRQ>  [<ffffffff81c8fb0d>] dump_stack+0x95/0xe8
[    8.111100]  [<ffffffff813e728b>] warn_alloc_failed+0x1cb/0x250
[    8.111100]  [<ffffffff813e70c0>] ? zone_watermark_ok_safe+0x250/0x250
[    8.111100]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[    8.111100]  [<ffffffff813e7f4c>] __alloc_pages_nodemask+0x92c/0x1fe0
[    8.111100]  [<ffffffff81d24a17>] ? depot_save_stack+0x1b7/0x5b0
[    8.111100]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    8.111100]  [<ffffffff8107c58b>] ? save_stack_trace+0x2b/0x50
[    8.111100]  [<ffffffff814e73e5>] ? kmem_cache_free+0x95/0x300
[    8.111100]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    8.111100]  [<ffffffff813e7620>] ? __free_pages+0x90/0x90
[    8.111100]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[    8.111100]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    8.111100]  [<ffffffff811fa0ed>] ? __lock_acquire+0x87d/0x5440
[    8.111100]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[    8.111100]  [<ffffffff81418436>] ? shrink_node+0x2d6/0xc60
[    8.111100]  [<ffffffff8141913a>] ? do_try_to_free_pages+0x37a/0xea0
[    8.111100]  [<ffffffff81245617>] ? debug_lockdep_rcu_enabled+0x77/0x90
[    8.111100]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[    8.111100]  [<ffffffff8105d05b>] ? print_context_stack+0x7b/0x100
[    8.111100]  [<ffffffff814d42dc>] alloc_pages_current+0xbc/0x1f0
[    8.111100]  [<ffffffff81d24d5f>] depot_save_stack+0x4ff/0x5b0
[    8.111100]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    8.111100]  [<ffffffff814eb4c7>] kasan_slab_free+0x157/0x180
[    8.111100]  [<ffffffff8107c58b>] ? save_stack_trace+0x2b/0x50
[    8.111100]  [<ffffffff814eb453>] ? kasan_slab_free+0xe3/0x180
[    8.111100]  [<ffffffff814e73e5>] ? kmem_cache_free+0x95/0x300
[    8.111100]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    8.111100]  [<ffffffff813d59a9>] ? mempool_free+0xd9/0x1d0
[    8.111100]  [<ffffffff81be96e5>] ? bio_free+0x145/0x220
[    8.111100]  [<ffffffff81bea8bf>] ? bio_put+0x8f/0xb0
[    8.111100]  [<ffffffff814a7bfe>] ? end_swap_bio_write+0x22e/0x310
[    8.111100]  [<ffffffff81bf1687>] ? bio_endio+0x187/0x1f0
[    8.111100]  [<ffffffff81c0e89b>] ? blk_update_request+0x1bb/0xc30
[    8.111100]  [<ffffffff81c3238c>] ? blk_mq_end_request+0x4c/0x130
[    8.111100]  [<ffffffff8208a330>] ? virtblk_request_done+0xb0/0x2a0
[    8.111100]  [<ffffffff81c2d17d>] ? __blk_mq_complete_request_remote+0x5d/0x70
[    8.111100]  [<ffffffff8129fe3c>] ? flush_smp_call_function_queue+0xdc/0x3a0
[    8.111100]  [<ffffffff812a0548>] ? generic_smp_call_function_single_interrupt+0x18/0x20
[    8.111100]  [<ffffffff8109c654>] ? smp_call_function_single_interrupt+0x64/0x90
[    8.111100]  [<ffffffff829584a9>] ? call_function_single_interrupt+0x89/0x90
[    8.111100]  [<ffffffff81416b54>] ? shrink_active_list+0x3e4/0x890
[    8.111100]  [<ffffffff81417bf2>] ? shrink_node_memcg+0xbf2/0x1160
[    8.111100]  [<ffffffff81418436>] ? shrink_node+0x2d6/0xc60
[    8.111100]  [<ffffffff8141913a>] ? do_try_to_free_pages+0x37a/0xea0
[    8.111100]  [<ffffffff81419e2f>] ? try_to_free_pages+0x1cf/0x650
[    8.111100]  [<ffffffff813e8239>] ? __alloc_pages_nodemask+0xc19/0x1fe0
[    8.111100]  [<ffffffff814d3cf4>] ? alloc_pages_vma+0x114/0x500
[    8.111100]  [<ffffffff81476c7e>] ? handle_mm_fault+0x1cee/0x2400
[    8.111100]  [<ffffffff810c5501>] ? __do_page_fault+0x341/0xa00
[    8.111100]  [<ffffffff810c5c10>] ? do_page_fault+0x20/0x30
[    8.111100]  [<ffffffff82958e92>] ? page_fault+0x22/0x30
[    8.111100]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    8.111100]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.111100]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.111100]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.111100]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[    8.111100]  [<ffffffff814e73c5>] ? kmem_cache_free+0x75/0x300
[    8.111100]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[    8.111100]  [<ffffffff814e747f>] ? kmem_cache_free+0x12f/0x300
[    8.111100]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    8.111100]  [<ffffffff814e73e5>] kmem_cache_free+0x95/0x300
[    8.111100]  [<ffffffff813d5aa0>] ? mempool_free+0x1d0/0x1d0
[    8.111100]  [<ffffffff813d5ac2>] mempool_free_slab+0x22/0x30
[    8.111100]  [<ffffffff813d59a9>] mempool_free+0xd9/0x1d0
[    8.111100]  [<ffffffff81be96e5>] bio_free+0x145/0x220
[    8.111100]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    8.111100]  [<ffffffff81bea8bf>] bio_put+0x8f/0xb0
[    8.111100]  [<ffffffff814a7bfe>] end_swap_bio_write+0x22e/0x310
[    8.111100]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    8.111100]  [<ffffffff81bf1687>] bio_endio+0x187/0x1f0
[    8.111100]  [<ffffffff81c0e89b>] blk_update_request+0x1bb/0xc30
[    8.111100]  [<ffffffff81c2d120>] ? blkdev_issue_zeroout+0x3f0/0x3f0
[    8.111100]  [<ffffffff81c3238c>] blk_mq_end_request+0x4c/0x130
[    8.111100]  [<ffffffff8208a330>] virtblk_request_done+0xb0/0x2a0
[    8.111100]  [<ffffffff81c2d17d>] __blk_mq_complete_request_remote+0x5d/0x70
[    8.111100]  [<ffffffff8129fe3c>] flush_smp_call_function_queue+0xdc/0x3a0
[    8.111100]  [<ffffffff812a0548>] generic_smp_call_function_single_interrupt+0x18/0x20
[    8.111100]  [<ffffffff8109c654>] smp_call_function_single_interrupt+0x64/0x90
[    8.111100]  [<ffffffff829584a9>] call_function_single_interrupt+0x89/0x90
[    8.111100]  <EOI>  [<ffffffff812fbfe5>] ? __sanitizer_cov_trace_pc+0x15/0x60
[    8.111100]  [<ffffffff81498688>] ? page_referenced+0x2c8/0x4e0
[    8.111100]  [<ffffffff814983c0>] ? rmap_walk+0x180/0x180
[    8.111100]  [<ffffffff814935a0>] ? page_check_address_transhuge+0x7e0/0x7e0
[    8.111100]  [<ffffffff81497de0>] ? page_get_anon_vma+0x300/0x300
[    8.111100]  [<ffffffff81434050>] ? page_mapping+0x110/0x1c0
[    8.111100]  [<ffffffff81416b54>] shrink_active_list+0x3e4/0x890
[    8.111100]  [<ffffffff81416770>] ? shrink_inactive_list+0xc70/0xc70
[    8.111100]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    8.111100]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.111100]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[    8.111100]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[    8.111100]  [<ffffffff8140f3cc>] ? lruvec_lru_size+0x4c/0xa0
[    8.111100]  [<ffffffff81417bf2>] shrink_node_memcg+0xbf2/0x1160
[    8.111100]  [<ffffffff81417000>] ? shrink_active_list+0x890/0x890
[    8.111100]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.111100]  [<ffffffff81cef98c>] ? debug_smp_processor_id+0x1c/0x20
[    8.111100]  [<ffffffff8151f208>] ? mem_cgroup_iter+0x1b8/0xd10
[    8.111100]  [<ffffffff82956c2c>] ? _raw_spin_unlock_irq+0x2c/0x50
[    8.111100]  [<ffffffff81418436>] shrink_node+0x2d6/0xc60
[    8.111100]  [<ffffffff81418160>] ? shrink_node_memcg+0x1160/0x1160
[    8.111100]  [<ffffffff8140f2ec>] ? pgdat_reclaimable+0x13c/0x1d0
[    8.111100]  [<ffffffff8141913a>] do_try_to_free_pages+0x37a/0xea0
[    8.111100]  [<ffffffff81418dc0>] ? shrink_node+0xc60/0xc60
[    8.111100]  [<ffffffff81419e2f>] try_to_free_pages+0x1cf/0x650
[    8.111100]  [<ffffffff81419c60>] ? do_try_to_free_pages+0xea0/0xea0
[    8.111100]  [<ffffffff813e8239>] __alloc_pages_nodemask+0xc19/0x1fe0
[    8.111100]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.111100]  [<ffffffff811fa0ed>] ? __lock_acquire+0x87d/0x5440
[    8.111100]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    8.111100]  [<ffffffff813e7620>] ? __free_pages+0x90/0x90
[    8.111100]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    8.111100]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.111100]  [<ffffffff8118e1a5>] ? __might_sleep+0x95/0x1a0
[    8.111100]  [<ffffffff814d3cf4>] alloc_pages_vma+0x114/0x500
[    8.111100]  [<ffffffff81476c7e>] handle_mm_fault+0x1cee/0x2400
[    8.111100]  [<ffffffff814750a7>] ? handle_mm_fault+0x117/0x2400
[    8.111100]  [<ffffffff81474f90>] ? vm_iomap_memory+0x160/0x160
[    8.111100]  [<ffffffff810c5420>] ? __do_page_fault+0x260/0xa00
[    8.111100]  [<ffffffff81483ae5>] ? find_vma+0x35/0x160
[    8.111100]  [<ffffffff810c5501>] __do_page_fault+0x341/0xa00
[    8.111100]  [<ffffffff810c5c10>] do_page_fault+0x20/0x30
[    8.111100]  [<ffffffff82958e92>] page_fault+0x22/0x30
[    8.184937] kswapd0: page allocation failure: order:2, mode:0x2000000(GFP_NOWAIT)
[    8.185967] CPU: 0 PID: 46 Comm: kswapd0 Not tainted 4.7.0-rc7-mm1-00428-gc3e13e4dab1b-dirty #2878
[    8.186746] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014
[    8.187733]  0000000000000000 ffff88000f807690 ffffffff81c8fb0d 1ffff10001f00ed6
[    8.188072]  0000000000000000 0000000000000002 ffff88000f807750 ffff88000f8077a8
[    8.188072]  ffffffff813e728b ffff88000f8077a8 0200000000000000 0000000041b58ab3
[    8.188072] Call Trace:
[    8.188072]  <IRQ>  [<ffffffff81c8fb0d>] dump_stack+0x95/0xe8
[    8.188072]  [<ffffffff813e728b>] warn_alloc_failed+0x1cb/0x250
[    8.188072]  [<ffffffff813e70c0>] ? zone_watermark_ok_safe+0x250/0x250
[    8.188072]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[    8.188072]  [<ffffffff813e7f4c>] __alloc_pages_nodemask+0x92c/0x1fe0
[    8.188072]  [<ffffffff81d24a17>] ? depot_save_stack+0x1b7/0x5b0
[    8.188072]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    8.188072]  [<ffffffff8107c58b>] ? save_stack_trace+0x2b/0x50
[    8.188072]  [<ffffffff814e73e5>] ? kmem_cache_free+0x95/0x300
[    8.188072]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    8.188072]  [<ffffffff813e7620>] ? __free_pages+0x90/0x90
[    8.188072]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[    8.188072]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    8.188072]  [<ffffffff811fa0ed>] ? __lock_acquire+0x87d/0x5440
[    8.188072]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[    8.188072]  [<ffffffff814a8fd8>] ? __swap_writepage+0x6e8/0x940
[    8.188072]  [<ffffffff814a926a>] ? swap_writepage+0x3a/0x70
[    8.188072]  [<ffffffff81245617>] ? debug_lockdep_rcu_enabled+0x77/0x90
[    8.188072]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[    8.188072]  [<ffffffff8105d05b>] ? print_context_stack+0x7b/0x100
[    8.188072]  [<ffffffff814d42dc>] alloc_pages_current+0xbc/0x1f0
[    8.188072]  [<ffffffff81d24d5f>] depot_save_stack+0x4ff/0x5b0
[    8.188072]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    8.188072]  [<ffffffff814eb4c7>] kasan_slab_free+0x157/0x180
[    8.188072]  [<ffffffff8107c58b>] ? save_stack_trace+0x2b/0x50
[    8.188072]  [<ffffffff814eb453>] ? kasan_slab_free+0xe3/0x180
[    8.188072]  [<ffffffff814e73e5>] ? kmem_cache_free+0x95/0x300
[    8.188072]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    8.188072]  [<ffffffff813d59a9>] ? mempool_free+0xd9/0x1d0
[    8.188072]  [<ffffffff81be96e5>] ? bio_free+0x145/0x220
[    8.188072]  [<ffffffff81bea8bf>] ? bio_put+0x8f/0xb0
[    8.188072]  [<ffffffff814a7bfe>] ? end_swap_bio_write+0x22e/0x310
[    8.188072]  [<ffffffff81bf1687>] ? bio_endio+0x187/0x1f0
[    8.188072]  [<ffffffff81c0e89b>] ? blk_update_request+0x1bb/0xc30
[    8.188072]  [<ffffffff81c3238c>] ? blk_mq_end_request+0x4c/0x130
[    8.188072]  [<ffffffff8208a330>] ? virtblk_request_done+0xb0/0x2a0
[    8.188072]  [<ffffffff81c2d17d>] ? __blk_mq_complete_request_remote+0x5d/0x70
[    8.188072]  [<ffffffff8129fe3c>] ? flush_smp_call_function_queue+0xdc/0x3a0
[    8.188072]  [<ffffffff812a0548>] ? generic_smp_call_function_single_interrupt+0x18/0x20
[    8.188072]  [<ffffffff8109c654>] ? smp_call_function_single_interrupt+0x64/0x90
[    8.188072]  [<ffffffff829584a9>] ? call_function_single_interrupt+0x89/0x90
[    8.188072]  [<ffffffff813c8dc8>] ? unlock_page+0x1b8/0x250
[    8.188072]  [<ffffffff814a8fcd>] ? __swap_writepage+0x6dd/0x940
[    8.188072]  [<ffffffff814a926a>] ? swap_writepage+0x3a/0x70
[    8.188072]  [<ffffffff8141376b>] ? shrink_page_list+0x1bdb/0x2f00
[    8.188072]  [<ffffffff81416038>] ? shrink_inactive_list+0x538/0xc70
[    8.188072]  [<ffffffff81417a1b>] ? shrink_node_memcg+0xa1b/0x1160
[    8.188072]  [<ffffffff81418436>] ? shrink_node+0x2d6/0xc60
[    8.188072]  [<ffffffff8141bf1e>] ? kswapd+0x82e/0x1460
[    8.188072]  [<ffffffff81156d4a>] ? kthread+0x24a/0x2e0
[    8.188072]  [<ffffffff8295773f>] ? ret_from_fork+0x1f/0x40
[    8.188072]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    8.188072]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.188072]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.188072]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.188072]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[    8.188072]  [<ffffffff814e73c5>] ? kmem_cache_free+0x75/0x300
[    8.188072]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[    8.188072]  [<ffffffff814e747f>] ? kmem_cache_free+0x12f/0x300
[    8.188072]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    8.188072]  [<ffffffff814e73e5>] kmem_cache_free+0x95/0x300
[    8.188072]  [<ffffffff813d5aa0>] ? mempool_free+0x1d0/0x1d0
[    8.188072]  [<ffffffff813d5ac2>] mempool_free_slab+0x22/0x30
[    8.188072]  [<ffffffff813d59a9>] mempool_free+0xd9/0x1d0
[    8.188072]  [<ffffffff81be96e5>] bio_free+0x145/0x220
[    8.188072]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    8.188072]  [<ffffffff81bea8bf>] bio_put+0x8f/0xb0
[    8.188072]  [<ffffffff814a7bfe>] end_swap_bio_write+0x22e/0x310
[    8.188072]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    8.188072]  [<ffffffff81bf1687>] bio_endio+0x187/0x1f0
[    8.188072]  [<ffffffff81c0e89b>] blk_update_request+0x1bb/0xc30
[    8.188072]  [<ffffffff81c2d120>] ? blkdev_issue_zeroout+0x3f0/0x3f0
[    8.188072]  [<ffffffff81c3238c>] blk_mq_end_request+0x4c/0x130
[    8.188072]  [<ffffffff8208a330>] virtblk_request_done+0xb0/0x2a0
[    8.188072]  [<ffffffff81c2d17d>] __blk_mq_complete_request_remote+0x5d/0x70
[    8.188072]  [<ffffffff8129fe3c>] flush_smp_call_function_queue+0xdc/0x3a0
[    8.188072]  [<ffffffff812a0548>] generic_smp_call_function_single_interrupt+0x18/0x20
[    8.188072]  [<ffffffff8109c654>] smp_call_function_single_interrupt+0x64/0x90
[    8.188072]  [<ffffffff829584a9>] call_function_single_interrupt+0x89/0x90
[    8.188072]  <EOI>  [<ffffffff811e0019>] ? __wake_up_bit+0xb9/0xd0
[    8.188072]  [<ffffffff811dff60>] ? woken_wake_function+0x60/0x60
[    8.188072]  [<ffffffff813f769d>] ? __test_set_page_writeback+0x36d/0x8c0
[    8.188072]  [<ffffffff813c8dc8>] unlock_page+0x1b8/0x250
[    8.188072]  [<ffffffff814a8fcd>] __swap_writepage+0x6dd/0x940
[    8.188072]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    8.188072]  [<ffffffff814a88f0>] ? generic_swapfile_activate+0x490/0x490
[    8.188072]  [<ffffffff814abd45>] ? swap_info_get+0x165/0x240
[    8.188072]  [<ffffffff814affda>] ? page_swapcount+0xba/0xf0
[    8.188072]  [<ffffffff82956ba1>] ? _raw_spin_unlock+0x31/0x50
[    8.188072]  [<ffffffff814affdf>] ? page_swapcount+0xbf/0xf0
[    8.188072]  [<ffffffff814a926a>] swap_writepage+0x3a/0x70
[    8.188072]  [<ffffffff8141376b>] shrink_page_list+0x1bdb/0x2f00
[    8.188072]  [<ffffffff81411b90>] ? putback_lru_page+0x3b0/0x3b0
[    8.188072]  [<ffffffff81cef9ac>] ? __this_cpu_preempt_check+0x1c/0x20
[    8.188072]  [<ffffffff81438ed4>] ? __mod_node_page_state+0x94/0xe0
[    8.188072]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    8.188072]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.188072]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.188072]  [<ffffffff811ee78d>] ? get_lock_stats+0x1d/0x90
[    8.188072]  [<ffffffff8140fcb0>] ? __isolate_lru_page+0x3b0/0x3b0
[    8.188072]  [<ffffffff81cef98c>] ? debug_smp_processor_id+0x1c/0x20
[    8.188072]  [<ffffffff81353ba2>] ? time_hardirqs_on+0xb2/0x330
[    8.188072]  [<ffffffff811f6535>] ? trace_hardirqs_on_caller+0x405/0x590
[    8.188072]  [<ffffffff81416038>] shrink_inactive_list+0x538/0xc70
[    8.188072]  [<ffffffff81415b00>] ? putback_inactive_pages+0xaa0/0xaa0
[    8.188072]  [<ffffffff81416770>] ? shrink_inactive_list+0xc70/0xc70
[    8.188072]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    8.188072]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.188072]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    8.188072]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.188072]  [<ffffffff81cd5780>] ? _find_next_bit.part.0+0xe0/0x120
[    8.188072]  [<ffffffff8140e654>] ? pgdat_reclaimable_pages+0x764/0x9d0
[    8.188072]  [<ffffffff8140f2ec>] ? pgdat_reclaimable+0x13c/0x1d0
[    8.188072]  [<ffffffff8140f3cc>] ? lruvec_lru_size+0x4c/0xa0
[    8.188072]  [<ffffffff81417a1b>] shrink_node_memcg+0xa1b/0x1160
[    8.188072]  [<ffffffff81417000>] ? shrink_active_list+0x890/0x890
[    8.188072]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    8.188072]  [<ffffffff81cef98c>] ? debug_smp_processor_id+0x1c/0x20
[    8.188072]  [<ffffffff8151f208>] ? mem_cgroup_iter+0x1b8/0xd10
[    8.188072]  [<ffffffff82956c2c>] ? _raw_spin_unlock_irq+0x2c/0x50
[    8.188072]  [<ffffffff81418436>] shrink_node+0x2d6/0xc60
[    8.188072]  [<ffffffff81418160>] ? shrink_node_memcg+0x1160/0x1160
[    8.188072]  [<ffffffff8140f3cc>] ? lruvec_lru_size+0x4c/0xa0
[    8.188072]  [<ffffffff8141bf1e>] kswapd+0x82e/0x1460
[    8.188072]  [<ffffffff8141b6f0>] ? mem_cgroup_shrink_node+0x600/0x600
[    8.188072]  [<ffffffff81171cc8>] ? finish_task_switch+0x178/0x5b0
[    8.188072]  [<ffffffff82956c2c>] ? _raw_spin_unlock_irq+0x2c/0x50
[    8.188072]  [<ffffffff811f6535>] ? trace_hardirqs_on_caller+0x405/0x590
[    8.188072]  [<ffffffff82956c37>] ? _raw_spin_unlock_irq+0x37/0x50
[    8.188072]  [<ffffffff81171cc8>] ? finish_task_switch+0x178/0x5b0
[    8.188072]  [<ffffffff811de8f0>] ? __wake_up_common+0x150/0x150
[    8.188072]  [<ffffffff82948c3e>] ? __schedule+0x55e/0x1b60
[    8.188072]  [<ffffffff81156a32>] ? __kthread_parkme+0x172/0x240
[    8.188072]  [<ffffffff81156d4a>] kthread+0x24a/0x2e0
[    8.188072]  [<ffffffff8141b6f0>] ? mem_cgroup_shrink_node+0x600/0x600
[    8.188072]  [<ffffffff81156b00>] ? __kthread_parkme+0x240/0x240
[    8.188072]  [<ffffffff81171c9c>] ? finish_task_switch+0x14c/0x5b0
[    8.188072]  [<ffffffff8295773f>] ret_from_fork+0x1f/0x40
[    8.188072]  [<ffffffff81156b00>] ? __kthread_parkme+0x240/0x240
[    9.480310] kswapd1: page allocation failure: order:2, mode:0x2000000(GFP_NOWAIT)
[    9.482121] CPU: 1 PID: 47 Comm: kswapd1 Not tainted 4.7.0-rc7-mm1-00428-gc3e13e4dab1b-dirty #2878
[    9.483136] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014
[    9.484127]  0000000000000001 ffff88001f807690 ffffffff81c8fb0d 1ffff10003f00ed6
[    9.484127]  0000000000000000 0000000000000002 ffff88001f807750 ffff88001f8077a8
[    9.484127]  ffffffff813e728b ffff88001f8077a8 0200000000000000 0000000041b58ab3
[    9.484127] Call Trace:
[    9.484127]  <IRQ>  [<ffffffff81c8fb0d>] dump_stack+0x95/0xe8
[    9.484127]  [<ffffffff813e728b>] warn_alloc_failed+0x1cb/0x250
[    9.484127]  [<ffffffff813e70c0>] ? zone_watermark_ok_safe+0x250/0x250
[    9.484127]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[    9.484127]  [<ffffffff813e7f4c>] __alloc_pages_nodemask+0x92c/0x1fe0
[    9.484127]  [<ffffffff81d24a17>] ? depot_save_stack+0x1b7/0x5b0
[    9.484127]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    9.484127]  [<ffffffff8107c58b>] ? save_stack_trace+0x2b/0x50
[    9.484127]  [<ffffffff814e73e5>] ? kmem_cache_free+0x95/0x300
[    9.484127]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    9.484127]  [<ffffffff813e7620>] ? __free_pages+0x90/0x90
[    9.484127]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[    9.484127]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    9.484127]  [<ffffffff811fa0ed>] ? __lock_acquire+0x87d/0x5440
[    9.484127]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[    9.484127]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    9.484127]  [<ffffffff81245617>] ? debug_lockdep_rcu_enabled+0x77/0x90
[    9.484127]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[    9.484127]  [<ffffffff8105d05b>] ? print_context_stack+0x7b/0x100
[    9.484127]  [<ffffffff814d42dc>] alloc_pages_current+0xbc/0x1f0
[    9.484127]  [<ffffffff81d24d5f>] depot_save_stack+0x4ff/0x5b0
[    9.484127]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    9.484127]  [<ffffffff814eb4c7>] kasan_slab_free+0x157/0x180
[    9.484127]  [<ffffffff8107c58b>] ? save_stack_trace+0x2b/0x50
[    9.484127]  [<ffffffff814eb453>] ? kasan_slab_free+0xe3/0x180
[    9.484127]  [<ffffffff814e73e5>] ? kmem_cache_free+0x95/0x300
[    9.484127]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    9.484127]  [<ffffffff813d59a9>] ? mempool_free+0xd9/0x1d0
[    9.484127]  [<ffffffff81be96e5>] ? bio_free+0x145/0x220
[    9.484127]  [<ffffffff81bea8bf>] ? bio_put+0x8f/0xb0
[    9.484127]  [<ffffffff814a7bfe>] ? end_swap_bio_write+0x22e/0x310
[    9.484127]  [<ffffffff81bf1687>] ? bio_endio+0x187/0x1f0
[    9.484127]  [<ffffffff81c0e89b>] ? blk_update_request+0x1bb/0xc30
[    9.484127]  [<ffffffff81c3238c>] ? blk_mq_end_request+0x4c/0x130
[    9.484127]  [<ffffffff8208a330>] ? virtblk_request_done+0xb0/0x2a0
[    9.484127]  [<ffffffff81c2d17d>] ? __blk_mq_complete_request_remote+0x5d/0x70
[    9.484127]  [<ffffffff8129fe3c>] ? flush_smp_call_function_queue+0xdc/0x3a0
[    9.484127]  [<ffffffff812a0548>] ? generic_smp_call_function_single_interrupt+0x18/0x20
[    9.484127]  [<ffffffff8109c654>] ? smp_call_function_single_interrupt+0x64/0x90
[    9.484127]  [<ffffffff829584a9>] ? call_function_single_interrupt+0x89/0x90
[    9.484127]  [<ffffffff814b1e5b>] ? get_swap_page+0x23b/0x3f0
[    9.484127]  [<ffffffff814aa2ef>] ? add_to_swap+0xdf/0x270
[    9.484127]  [<ffffffff814124fe>] ? shrink_page_list+0x96e/0x2f00
[    9.484127]  [<ffffffff81416038>] ? shrink_inactive_list+0x538/0xc70
[    9.484127]  [<ffffffff81417a1b>] ? shrink_node_memcg+0xa1b/0x1160
[    9.484127]  [<ffffffff81418436>] ? shrink_node+0x2d6/0xc60
[    9.484127]  [<ffffffff8141bf1e>] ? kswapd+0x82e/0x1460
[    9.484127]  [<ffffffff81156d4a>] ? kthread+0x24a/0x2e0
[    9.484127]  [<ffffffff8295773f>] ? ret_from_fork+0x1f/0x40
[    9.484127]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    9.484127]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    9.484127]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    9.484127]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    9.484127]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[    9.484127]  [<ffffffff814e73c5>] ? kmem_cache_free+0x75/0x300
[    9.484127]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[    9.484127]  [<ffffffff814e747f>] ? kmem_cache_free+0x12f/0x300
[    9.484127]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[    9.484127]  [<ffffffff814e73e5>] kmem_cache_free+0x95/0x300
[    9.484127]  [<ffffffff813d5aa0>] ? mempool_free+0x1d0/0x1d0
[    9.484127]  [<ffffffff813d5ac2>] mempool_free_slab+0x22/0x30
[    9.484127]  [<ffffffff813d59a9>] mempool_free+0xd9/0x1d0
[    9.484127]  [<ffffffff81be96e5>] bio_free+0x145/0x220
[    9.484127]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    9.484127]  [<ffffffff81bea8bf>] bio_put+0x8f/0xb0
[    9.484127]  [<ffffffff814a7bfe>] end_swap_bio_write+0x22e/0x310
[    9.484127]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[    9.484127]  [<ffffffff81bf1687>] bio_endio+0x187/0x1f0
[    9.528017]  [<ffffffff81c0e89b>] blk_update_request+0x1bb/0xc30
[    9.528017]  [<ffffffff81c2d120>] ? blkdev_issue_zeroout+0x3f0/0x3f0
[    9.528017]  [<ffffffff81c3238c>] blk_mq_end_request+0x4c/0x130
[    9.528017]  [<ffffffff8208a330>] virtblk_request_done+0xb0/0x2a0
[    9.528017]  [<ffffffff81c2d17d>] __blk_mq_complete_request_remote+0x5d/0x70
[    9.528017]  [<ffffffff8129fe3c>] flush_smp_call_function_queue+0xdc/0x3a0
[    9.528017]  [<ffffffff812a0548>] generic_smp_call_function_single_interrupt+0x18/0x20
[    9.528017]  [<ffffffff8109c654>] smp_call_function_single_interrupt+0x64/0x90
[    9.528017]  [<ffffffff829584a9>] call_function_single_interrupt+0x89/0x90
[    9.528017]  <EOI>  [<ffffffff82956b8f>] ? _raw_spin_unlock+0x1f/0x50
[    9.528017]  [<ffffffff814b1e5b>] get_swap_page+0x23b/0x3f0
[    9.528017]  [<ffffffff814aa2ef>] add_to_swap+0xdf/0x270
[    9.528017]  [<ffffffff814124fe>] shrink_page_list+0x96e/0x2f00
[    9.528017]  [<ffffffff81411b90>] ? putback_lru_page+0x3b0/0x3b0
[    9.528017]  [<ffffffff81cef9ac>] ? __this_cpu_preempt_check+0x1c/0x20
[    9.528017]  [<ffffffff81438ed4>] ? __mod_node_page_state+0x94/0xe0
[    9.528017]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    9.528017]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    9.528017]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    9.528017]  [<ffffffff811ee78d>] ? get_lock_stats+0x1d/0x90
[    9.528017]  [<ffffffff8140fcb0>] ? __isolate_lru_page+0x3b0/0x3b0
[    9.528017]  [<ffffffff81cef98c>] ? debug_smp_processor_id+0x1c/0x20
[    9.528017]  [<ffffffff81353ba2>] ? time_hardirqs_on+0xb2/0x330
[    9.528017]  [<ffffffff811f6535>] ? trace_hardirqs_on_caller+0x405/0x590
[    9.528017]  [<ffffffff81416038>] shrink_inactive_list+0x538/0xc70
[    9.528017]  [<ffffffff81415b00>] ? putback_inactive_pages+0xaa0/0xaa0
[    9.528017]  [<ffffffff81416770>] ? shrink_inactive_list+0xc70/0xc70
[    9.528017]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[    9.528017]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    9.528017]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    9.528017]  [<ffffffff81cd5780>] ? _find_next_bit.part.0+0xe0/0x120
[    9.528017]  [<ffffffff8140e654>] ? pgdat_reclaimable_pages+0x764/0x9d0
[    9.528017]  [<ffffffff8140f2ec>] ? pgdat_reclaimable+0x13c/0x1d0
[    9.528017]  [<ffffffff8140f3cc>] ? lruvec_lru_size+0x4c/0xa0
[    9.528017]  [<ffffffff81417a1b>] shrink_node_memcg+0xa1b/0x1160
[    9.528017]  [<ffffffff81417000>] ? shrink_active_list+0x890/0x890
[    9.528017]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[    9.528017]  [<ffffffff81cef98c>] ? debug_smp_processor_id+0x1c/0x20
[    9.528017]  [<ffffffff8151f208>] ? mem_cgroup_iter+0x1b8/0xd10
[    9.528017]  [<ffffffff82956c2c>] ? _raw_spin_unlock_irq+0x2c/0x50
[    9.528017]  [<ffffffff81418436>] shrink_node+0x2d6/0xc60
[    9.528017]  [<ffffffff81418160>] ? shrink_node_memcg+0x1160/0x1160
[    9.528017]  [<ffffffff8140f3cc>] ? lruvec_lru_size+0x4c/0xa0
[    9.528017]  [<ffffffff8141bf1e>] kswapd+0x82e/0x1460
[    9.528017]  [<ffffffff8141b6f0>] ? mem_cgroup_shrink_node+0x600/0x600
[    9.528017]  [<ffffffff81171cc8>] ? finish_task_switch+0x178/0x5b0
[    9.528017]  [<ffffffff82956c2c>] ? _raw_spin_unlock_irq+0x2c/0x50
[    9.528017]  [<ffffffff811f6535>] ? trace_hardirqs_on_caller+0x405/0x590
[    9.528017]  [<ffffffff82956c37>] ? _raw_spin_unlock_irq+0x37/0x50
[    9.528017]  [<ffffffff81171cc8>] ? finish_task_switch+0x178/0x5b0
[    9.528017]  [<ffffffff811de8f0>] ? __wake_up_common+0x150/0x150
[    9.528017]  [<ffffffff82948c3e>] ? __schedule+0x55e/0x1b60
[    9.528017]  [<ffffffff81156a32>] ? __kthread_parkme+0x172/0x240
[    9.528017]  [<ffffffff81156d4a>] kthread+0x24a/0x2e0
[    9.528017]  [<ffffffff8141b6f0>] ? mem_cgroup_shrink_node+0x600/0x600
[    9.528017]  [<ffffffff81156b00>] ? __kthread_parkme+0x240/0x240
[    9.528017]  [<ffffffff81171c9c>] ? finish_task_switch+0x14c/0x5b0
[    9.528017]  [<ffffffff8295773f>] ret_from_fork+0x1f/0x40
[    9.528017]  [<ffffffff81156b00>] ? __kthread_parkme+0x240/0x240
[   10.223062] usemem: page allocation failure: order:2, mode:0x2000000(GFP_NOWAIT)
[   10.223845] CPU: 0 PID: 131 Comm: usemem Not tainted 4.7.0-rc7-mm1-00428-gc3e13e4dab1b-dirty #2878
[   10.224030] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014
[   10.224030]  0000000000000000 ffff88000f807690 ffffffff81c8fb0d 1ffff10001f00ed6
[   10.224030]  0000000000000000 0000000000000002 ffff88000f807750 ffff88000f8077a8
[   10.224030]  ffffffff813e728b ffff88000f8077a8 0200000000000000 0000000041b58ab3
[   10.224030] Call Trace:
[   10.224030]  <IRQ>  [<ffffffff81c8fb0d>] dump_stack+0x95/0xe8
[   10.224030]  [<ffffffff813e728b>] warn_alloc_failed+0x1cb/0x250
[   10.224030]  [<ffffffff813e70c0>] ? zone_watermark_ok_safe+0x250/0x250
[   10.224030]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[   10.224030]  [<ffffffff813e7f4c>] __alloc_pages_nodemask+0x92c/0x1fe0
[   10.224030]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[   10.224030]  [<ffffffff81d24a17>] ? depot_save_stack+0x1b7/0x5b0
[   10.224030]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[   10.224030]  [<ffffffff81313595>] ? is_ftrace_trampoline+0xe5/0x120
[   10.224030]  [<ffffffff813e7620>] ? __free_pages+0x90/0x90
[   10.224030]  [<ffffffff811f9870>] ? debug_show_all_locks+0x290/0x290
[   10.224030]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[   10.224030]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   10.224030]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   10.224030]  [<ffffffff81cef98c>] ? debug_smp_processor_id+0x1c/0x20
[   10.224030]  [<ffffffff811ee78d>] ? get_lock_stats+0x1d/0x90
[   10.224030]  [<ffffffff81245617>] ? debug_lockdep_rcu_enabled+0x77/0x90
[   10.224030]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[   10.224030]  [<ffffffff8105d05b>] ? print_context_stack+0x7b/0x100
[   10.224030]  [<ffffffff814d42dc>] alloc_pages_current+0xbc/0x1f0
[   10.224030]  [<ffffffff81d24d5f>] depot_save_stack+0x4ff/0x5b0
[   10.224030]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[   10.224030]  [<ffffffff814eb4c7>] kasan_slab_free+0x157/0x180
[   10.224030]  [<ffffffff8107c58b>] ? save_stack_trace+0x2b/0x50
[   10.224030]  [<ffffffff814eb453>] ? kasan_slab_free+0xe3/0x180
[   10.224030]  [<ffffffff814e73e5>] ? kmem_cache_free+0x95/0x300
[   10.224030]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[   10.224030]  [<ffffffff813d59a9>] ? mempool_free+0xd9/0x1d0
[   10.224030]  [<ffffffff81be96e5>] ? bio_free+0x145/0x220
[   10.224030]  [<ffffffff81bea8bf>] ? bio_put+0x8f/0xb0
[   10.224030]  [<ffffffff814a7bfe>] ? end_swap_bio_write+0x22e/0x310
[   10.224030]  [<ffffffff81bf1687>] ? bio_endio+0x187/0x1f0
[   10.224030]  [<ffffffff81c0e89b>] ? blk_update_request+0x1bb/0xc30
[   10.224030]  [<ffffffff81c3238c>] ? blk_mq_end_request+0x4c/0x130
[   10.224030]  [<ffffffff8208a330>] ? virtblk_request_done+0xb0/0x2a0
[   10.224030]  [<ffffffff81c2d17d>] ? __blk_mq_complete_request_remote+0x5d/0x70
[   10.224030]  [<ffffffff8129fe3c>] ? flush_smp_call_function_queue+0xdc/0x3a0
[   10.224030]  [<ffffffff812a0548>] ? generic_smp_call_function_single_interrupt+0x18/0x20
[   10.224030]  [<ffffffff8109c654>] ? smp_call_function_single_interrupt+0x64/0x90
[   10.224030]  [<ffffffff829584a9>] ? call_function_single_interrupt+0x89/0x90
[   10.224030]  [<ffffffff81528930>] ? unlock_page_memcg+0xa0/0x130
[   10.224030]  [<ffffffff813f769d>] ? __test_set_page_writeback+0x36d/0x8c0
[   10.224030]  [<ffffffff814a8fc5>] ? __swap_writepage+0x6d5/0x940
[   10.224030]  [<ffffffff814a926a>] ? swap_writepage+0x3a/0x70
[   10.224030]  [<ffffffff8141376b>] ? shrink_page_list+0x1bdb/0x2f00
[   10.224030]  [<ffffffff81416038>] ? shrink_inactive_list+0x538/0xc70
[   10.224030]  [<ffffffff81417a1b>] ? shrink_node_memcg+0xa1b/0x1160
[   10.224030]  [<ffffffff81418436>] ? shrink_node+0x2d6/0xc60
[   10.224030]  [<ffffffff8141913a>] ? do_try_to_free_pages+0x37a/0xea0
[   10.224030]  [<ffffffff81419e2f>] ? try_to_free_pages+0x1cf/0x650
[   10.224030]  [<ffffffff813e8239>] ? __alloc_pages_nodemask+0xc19/0x1fe0
[   10.224030]  [<ffffffff814d3cf4>] ? alloc_pages_vma+0x114/0x500
[   10.224030]  [<ffffffff81476c7e>] ? handle_mm_fault+0x1cee/0x2400
[   10.224030]  [<ffffffff810c5501>] ? __do_page_fault+0x341/0xa00
[   10.224030]  [<ffffffff810c5c10>] ? do_page_fault+0x20/0x30
[   10.224030]  [<ffffffff82958e92>] ? page_fault+0x22/0x30
[   10.224030]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   10.224030]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   10.224030]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   10.224030]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[   10.224030]  [<ffffffff814e73c5>] ? kmem_cache_free+0x75/0x300
[   10.224030]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[   10.224030]  [<ffffffff814e747f>] ? kmem_cache_free+0x12f/0x300
[   10.224030]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[   10.224030]  [<ffffffff814e73e5>] kmem_cache_free+0x95/0x300
[   10.224030]  [<ffffffff813d5aa0>] ? mempool_free+0x1d0/0x1d0
[   10.224030]  [<ffffffff813d5ac2>] mempool_free_slab+0x22/0x30
[   10.224030]  [<ffffffff813d59a9>] mempool_free+0xd9/0x1d0
[   10.224030]  [<ffffffff81be96e5>] bio_free+0x145/0x220
[   10.224030]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[   10.224030]  [<ffffffff81bea8bf>] bio_put+0x8f/0xb0
[   10.224030]  [<ffffffff814a7bfe>] end_swap_bio_write+0x22e/0x310
[   10.224030]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[   10.224030]  [<ffffffff81bf1687>] bio_endio+0x187/0x1f0
[   10.224030]  [<ffffffff81c0e89b>] blk_update_request+0x1bb/0xc30
[   10.224030]  [<ffffffff81c2d120>] ? blkdev_issue_zeroout+0x3f0/0x3f0
[   10.224030]  [<ffffffff81c3238c>] blk_mq_end_request+0x4c/0x130
[   10.224030]  [<ffffffff8208a330>] virtblk_request_done+0xb0/0x2a0
[   10.224030]  [<ffffffff81c2d17d>] __blk_mq_complete_request_remote+0x5d/0x70
[   10.224030]  [<ffffffff8129fe3c>] flush_smp_call_function_queue+0xdc/0x3a0
[   10.224030]  [<ffffffff812a0548>] generic_smp_call_function_single_interrupt+0x18/0x20
[   10.224030]  [<ffffffff8109c654>] smp_call_function_single_interrupt+0x64/0x90
[   10.224030]  [<ffffffff829584a9>] call_function_single_interrupt+0x89/0x90
[   10.224030]  <EOI>  [<ffffffff812539f5>] ? rcu_is_watching+0x15/0xb0
[   10.224030]  [<ffffffff812539f5>] ? rcu_is_watching+0x15/0xb0
[   10.224030]  [<ffffffff81528930>] unlock_page_memcg+0xa0/0x130
[   10.224030]  [<ffffffff813f769d>] __test_set_page_writeback+0x36d/0x8c0
[   10.224030]  [<ffffffff814a8fc5>] __swap_writepage+0x6d5/0x940
[   10.224030]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[   10.224030]  [<ffffffff814a88f0>] ? generic_swapfile_activate+0x490/0x490
[   10.224030]  [<ffffffff814abd45>] ? swap_info_get+0x165/0x240
[   10.224030]  [<ffffffff814affda>] ? page_swapcount+0xba/0xf0
[   10.224030]  [<ffffffff82956ba1>] ? _raw_spin_unlock+0x31/0x50
[   10.224030]  [<ffffffff814affdf>] ? page_swapcount+0xbf/0xf0
[   10.224030]  [<ffffffff814a926a>] swap_writepage+0x3a/0x70
[   10.224030]  [<ffffffff8141376b>] shrink_page_list+0x1bdb/0x2f00
[   10.224030]  [<ffffffff81411b90>] ? putback_lru_page+0x3b0/0x3b0
[   10.224030]  [<ffffffff81cef9ac>] ? __this_cpu_preempt_check+0x1c/0x20
[   10.224030]  [<ffffffff81438ed4>] ? __mod_node_page_state+0x94/0xe0
[   10.224030]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[   10.224030]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   10.224030]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   10.224030]  [<ffffffff811ee78d>] ? get_lock_stats+0x1d/0x90
[   10.224030]  [<ffffffff811f6535>] ? trace_hardirqs_on_caller+0x405/0x590
[   10.224030]  [<ffffffff81416038>] shrink_inactive_list+0x538/0xc70
[   10.224030]  [<ffffffff81415b00>] ? putback_inactive_pages+0xaa0/0xaa0
[   10.224030]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[   10.224030]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[   10.224030]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   10.224030]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[   10.224030]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[   10.224030]  [<ffffffff81417a1b>] shrink_node_memcg+0xa1b/0x1160
[   10.224030]  [<ffffffff81417000>] ? shrink_active_list+0x890/0x890
[   10.224030]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   10.224030]  [<ffffffff81cef98c>] ? debug_smp_processor_id+0x1c/0x20
[   10.224030]  [<ffffffff8151f208>] ? mem_cgroup_iter+0x1b8/0xd10
[   10.224030]  [<ffffffff82956c2c>] ? _raw_spin_unlock_irq+0x2c/0x50
[   10.224030]  [<ffffffff81418436>] shrink_node+0x2d6/0xc60
[   10.224030]  [<ffffffff81418160>] ? shrink_node_memcg+0x1160/0x1160
[   10.224030]  [<ffffffff8140f2ec>] ? pgdat_reclaimable+0x13c/0x1d0
[   10.224030]  [<ffffffff8141913a>] do_try_to_free_pages+0x37a/0xea0
[   10.224030]  [<ffffffff81418dc0>] ? shrink_node+0xc60/0xc60
[   10.224030]  [<ffffffff81419e2f>] try_to_free_pages+0x1cf/0x650
[   10.224030]  [<ffffffff81419c60>] ? do_try_to_free_pages+0xea0/0xea0
[   10.224030]  [<ffffffff813e8239>] __alloc_pages_nodemask+0xc19/0x1fe0
[   10.224030]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   10.224030]  [<ffffffff811fa0ed>] ? __lock_acquire+0x87d/0x5440
[   10.224030]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[   10.224030]  [<ffffffff813e7620>] ? __free_pages+0x90/0x90
[   10.224030]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[   10.224030]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   10.224030]  [<ffffffff8118e1a5>] ? __might_sleep+0x95/0x1a0
[   10.224030]  [<ffffffff814d3cf4>] alloc_pages_vma+0x114/0x500
[   10.224030]  [<ffffffff81476c7e>] handle_mm_fault+0x1cee/0x2400
[   10.224030]  [<ffffffff814750a7>] ? handle_mm_fault+0x117/0x2400
[   10.224030]  [<ffffffff81474f90>] ? vm_iomap_memory+0x160/0x160
[   10.224030]  [<ffffffff810c5420>] ? __do_page_fault+0x260/0xa00
[   10.224030]  [<ffffffff81483ae5>] ? find_vma+0x35/0x160
[   10.224030]  [<ffffffff810c5501>] __do_page_fault+0x341/0xa00
[   10.224030]  [<ffffffff810c5c10>] do_page_fault+0x20/0x30
[   10.224030]  [<ffffffff82958e92>] page_fault+0x22/0x30
[   11.085432] kswapd0: page allocation failure: order:2, mode:0x2000000(GFP_NOWAIT)
[   11.086405] CPU: 0 PID: 46 Comm: kswapd0 Not tainted 4.7.0-rc7-mm1-00428-gc3e13e4dab1b-dirty #2878
[   11.087294] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014
[   11.088028]  0000000000000000 ffff88000f807690 ffffffff81c8fb0d 1ffff10001f00ed6
[   11.088028]  0000000000000000 0000000000000002 ffff88000f807750 ffff88000f8077a8
[   11.088028]  ffffffff813e728b ffff88000f8077a8 0200000000000000 0000000041b58ab3
[   11.088028] Call Trace:
[   11.088028]  <IRQ>  [<ffffffff81c8fb0d>] dump_stack+0x95/0xe8
[   11.088028]  [<ffffffff813e728b>] warn_alloc_failed+0x1cb/0x250
[   11.088028]  [<ffffffff813e70c0>] ? zone_watermark_ok_safe+0x250/0x250
[   11.088028]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[   11.088028]  [<ffffffff813e7f4c>] __alloc_pages_nodemask+0x92c/0x1fe0
[   11.088028]  [<ffffffff81d24a17>] ? depot_save_stack+0x1b7/0x5b0
[   11.088028]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[   11.088028]  [<ffffffff8107c58b>] ? save_stack_trace+0x2b/0x50
[   11.088028]  [<ffffffff814e73e5>] ? kmem_cache_free+0x95/0x300
[   11.088028]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[   11.088028]  [<ffffffff813e7620>] ? __free_pages+0x90/0x90
[   11.088028]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[   11.088028]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[   11.088028]  [<ffffffff811fa0ed>] ? __lock_acquire+0x87d/0x5440
[   11.088028]  [<ffffffff8119047c>] ? sched_clock_cpu+0x12c/0x1e0
[   11.088028]  [<ffffffff81156d4a>] ? kthread+0x24a/0x2e0
[   11.088028]  [<ffffffff8295773f>] ? ret_from_fork+0x1f/0x40
[   11.088028]  [<ffffffff81245617>] ? debug_lockdep_rcu_enabled+0x77/0x90
[   11.088028]  [<ffffffff81153788>] ? __kernel_text_address+0x78/0xa0
[   11.088028]  [<ffffffff8105d05b>] ? print_context_stack+0x7b/0x100
[   11.088028]  [<ffffffff814d42dc>] alloc_pages_current+0xbc/0x1f0
[   11.088028]  [<ffffffff81d24d5f>] depot_save_stack+0x4ff/0x5b0
[   11.088028]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[   11.088028]  [<ffffffff814eb4c7>] kasan_slab_free+0x157/0x180
[   11.088028]  [<ffffffff8107c58b>] ? save_stack_trace+0x2b/0x50
[   11.088028]  [<ffffffff814eb453>] ? kasan_slab_free+0xe3/0x180
[   11.088028]  [<ffffffff814e73e5>] ? kmem_cache_free+0x95/0x300
[   11.088028]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[   11.088028]  [<ffffffff813d59a9>] ? mempool_free+0xd9/0x1d0
[   11.088028]  [<ffffffff81be96e5>] ? bio_free+0x145/0x220
[   11.088028]  [<ffffffff81bea8bf>] ? bio_put+0x8f/0xb0
[   11.088028]  [<ffffffff814a7bfe>] ? end_swap_bio_write+0x22e/0x310
[   11.088028]  [<ffffffff81bf1687>] ? bio_endio+0x187/0x1f0
[   11.088028]  [<ffffffff81c0e89b>] ? blk_update_request+0x1bb/0xc30
[   11.088028]  [<ffffffff81c3238c>] ? blk_mq_end_request+0x4c/0x130
[   11.088028]  [<ffffffff8208a330>] ? virtblk_request_done+0xb0/0x2a0
[   11.088028]  [<ffffffff81c2d17d>] ? __blk_mq_complete_request_remote+0x5d/0x70
[   11.088028]  [<ffffffff8129fe3c>] ? flush_smp_call_function_queue+0xdc/0x3a0
[   11.088028]  [<ffffffff812a0548>] ? generic_smp_call_function_single_interrupt+0x18/0x20
[   11.088028]  [<ffffffff8109c654>] ? smp_call_function_single_interrupt+0x64/0x90
[   11.088028]  [<ffffffff829584a9>] ? call_function_single_interrupt+0x89/0x90
[   11.088028]  [<ffffffff814a8fd8>] ? __swap_writepage+0x6e8/0x940
[   11.088028]  [<ffffffff814a926a>] ? swap_writepage+0x3a/0x70
[   11.088028]  [<ffffffff8141376b>] ? shrink_page_list+0x1bdb/0x2f00
[   11.088028]  [<ffffffff81416038>] ? shrink_inactive_list+0x538/0xc70
[   11.088028]  [<ffffffff81417a1b>] ? shrink_node_memcg+0xa1b/0x1160
[   11.088028]  [<ffffffff81418436>] ? shrink_node+0x2d6/0xc60
[   11.088028]  [<ffffffff8141bf1e>] ? kswapd+0x82e/0x1460
[   11.088028]  [<ffffffff81156d4a>] ? kthread+0x24a/0x2e0
[   11.088028]  [<ffffffff8295773f>] ? ret_from_fork+0x1f/0x40
[   11.088028]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[   11.088028]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   11.088028]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   11.088028]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   11.088028]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[   11.088028]  [<ffffffff814e73c5>] ? kmem_cache_free+0x75/0x300
[   11.088028]  [<ffffffff81353e65>] ? time_hardirqs_off+0x45/0x2f0
[   11.088028]  [<ffffffff814e747f>] ? kmem_cache_free+0x12f/0x300
[   11.088028]  [<ffffffff813d5ac2>] ? mempool_free_slab+0x22/0x30
[   11.088028]  [<ffffffff814e73e5>] kmem_cache_free+0x95/0x300
[   11.088028]  [<ffffffff813d5aa0>] ? mempool_free+0x1d0/0x1d0
[   11.088028]  [<ffffffff813d5ac2>] mempool_free_slab+0x22/0x30
[   11.088028]  [<ffffffff813d59a9>] mempool_free+0xd9/0x1d0
[   11.088028]  [<ffffffff81be96e5>] bio_free+0x145/0x220
[   11.088028]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[   11.088028]  [<ffffffff81bea8bf>] bio_put+0x8f/0xb0
[   11.088028]  [<ffffffff814a7bfe>] end_swap_bio_write+0x22e/0x310
[   11.088028]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[   11.088028]  [<ffffffff81bf1687>] bio_endio+0x187/0x1f0
[   11.088028]  [<ffffffff81c0e89b>] blk_update_request+0x1bb/0xc30
[   11.088028]  [<ffffffff81c2d120>] ? blkdev_issue_zeroout+0x3f0/0x3f0
[   11.088028]  [<ffffffff81c3238c>] blk_mq_end_request+0x4c/0x130
[   11.088028]  [<ffffffff8208a330>] virtblk_request_done+0xb0/0x2a0
[   11.088028]  [<ffffffff81c2d17d>] __blk_mq_complete_request_remote+0x5d/0x70
[   11.088028]  [<ffffffff8129fe3c>] flush_smp_call_function_queue+0xdc/0x3a0
[   11.088028]  [<ffffffff812a0548>] generic_smp_call_function_single_interrupt+0x18/0x20
[   11.088028]  [<ffffffff8109c654>] smp_call_function_single_interrupt+0x64/0x90
[   11.088028]  [<ffffffff829584a9>] call_function_single_interrupt+0x89/0x90
[   11.088028]  <EOI>  [<ffffffff81c0b514>] ? submit_bio+0x164/0x470
[   11.088028]  [<ffffffff81c0b4f8>] ? submit_bio+0x148/0x470
[   11.088028]  [<ffffffff811dff60>] ? woken_wake_function+0x60/0x60
[   11.088028]  [<ffffffff81c0b3b0>] ? generic_make_request+0x660/0x660
[   11.088028]  [<ffffffff813f769d>] ? __test_set_page_writeback+0x36d/0x8c0
[   11.088028]  [<ffffffff814a8fd8>] __swap_writepage+0x6e8/0x940
[   11.088028]  [<ffffffff814a79d0>] ? SyS_madvise+0x13c0/0x13c0
[   11.088028]  [<ffffffff814a88f0>] ? generic_swapfile_activate+0x490/0x490
[   11.088028]  [<ffffffff814abd45>] ? swap_info_get+0x165/0x240
[   11.088028]  [<ffffffff814affda>] ? page_swapcount+0xba/0xf0
[   11.088028]  [<ffffffff82956ba1>] ? _raw_spin_unlock+0x31/0x50
[   11.088028]  [<ffffffff814affdf>] ? page_swapcount+0xbf/0xf0
[   11.088028]  [<ffffffff814a926a>] swap_writepage+0x3a/0x70
[   11.088028]  [<ffffffff8141376b>] shrink_page_list+0x1bdb/0x2f00
[   11.088028]  [<ffffffff81411b90>] ? putback_lru_page+0x3b0/0x3b0
[   11.088028]  [<ffffffff81cef9ac>] ? __this_cpu_preempt_check+0x1c/0x20
[   11.088028]  [<ffffffff81438ed4>] ? __mod_node_page_state+0x94/0xe0
[   11.088028]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[   11.088028]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   11.088028]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   11.088028]  [<ffffffff811ee78d>] ? get_lock_stats+0x1d/0x90
[   11.088028]  [<ffffffff8140fcb0>] ? __isolate_lru_page+0x3b0/0x3b0
[   11.088028]  [<ffffffff81cef98c>] ? debug_smp_processor_id+0x1c/0x20
[   11.088028]  [<ffffffff81353ba2>] ? time_hardirqs_on+0xb2/0x330
[   11.088028]  [<ffffffff811f6535>] ? trace_hardirqs_on_caller+0x405/0x590
[   11.088028]  [<ffffffff81416038>] shrink_inactive_list+0x538/0xc70
[   11.088028]  [<ffffffff81415b00>] ? putback_inactive_pages+0xaa0/0xaa0
[   11.088028]  [<ffffffff81416770>] ? shrink_inactive_list+0xc70/0xc70
[   11.088028]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[   11.088028]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   11.088028]  [<ffffffff81190023>] ? sched_clock_local+0x43/0x120
[   11.088028]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   11.088028]  [<ffffffff81cd5780>] ? _find_next_bit.part.0+0xe0/0x120
[   11.088028]  [<ffffffff8140e654>] ? pgdat_reclaimable_pages+0x764/0x9d0
[   11.088028]  [<ffffffff8140f2ec>] ? pgdat_reclaimable+0x13c/0x1d0
[   11.088028]  [<ffffffff8140f3cc>] ? lruvec_lru_size+0x4c/0xa0
[   11.088028]  [<ffffffff81417a1b>] shrink_node_memcg+0xa1b/0x1160
[   11.088028]  [<ffffffff81417000>] ? shrink_active_list+0x890/0x890
[   11.088028]  [<ffffffff81cef815>] ? check_preemption_disabled+0x35/0x190
[   11.088028]  [<ffffffff81cef98c>] ? debug_smp_processor_id+0x1c/0x20
[   11.088028]  [<ffffffff8151f208>] ? mem_cgroup_iter+0x1b8/0xd10
[   11.088028]  [<ffffffff82956c2c>] ? _raw_spin_unlock_irq+0x2c/0x50
[   11.088028]  [<ffffffff81418436>] shrink_node+0x2d6/0xc60
[   11.088028]  [<ffffffff81418160>] ? shrink_node_memcg+0x1160/0x1160
[   11.088028]  [<ffffffff8140f3cc>] ? lruvec_lru_size+0x4c/0xa0
[   11.088028]  [<ffffffff8141bf1e>] kswapd+0x82e/0x1460
[   11.088028]  [<ffffffff8141b6f0>] ? mem_cgroup_shrink_node+0x600/0x600
[   11.088028]  [<ffffffff81171cc8>] ? finish_task_switch+0x178/0x5b0
[   11.088028]  [<ffffffff82956c2c>] ? _raw_spin_unlock_irq+0x2c/0x50
[   11.088028]  [<ffffffff811f6535>] ? trace_hardirqs_on_caller+0x405/0x590
[   11.088028]  [<ffffffff82956c37>] ? _raw_spin_unlock_irq+0x37/0x50
[   11.088028]  [<ffffffff81171cc8>] ? finish_task_switch+0x178/0x5b0
[   11.088028]  [<ffffffff811de8f0>] ? __wake_up_common+0x150/0x150
[   11.088028]  [<ffffffff82948c3e>] ? __schedule+0x55e/0x1b60
[   11.088028]  [<ffffffff81156a32>] ? __kthread_parkme+0x172/0x240
[   11.088028]  [<ffffffff81156d4a>] kthread+0x24a/0x2e0
[   11.088028]  [<ffffffff8141b6f0>] ? mem_cgroup_shrink_node+0x600/0x600
[   11.088028]  [<ffffffff81156b00>] ? __kthread_parkme+0x240/0x240
[   11.088028]  [<ffffffff81171c9c>] ? finish_task_switch+0x14c/0x5b0
[   11.088028]  [<ffffffff8295773f>] ret_from_fork+0x1f/0x40
[   11.088028]  [<ffffffff81156b00>] ? __kthread_parkme+0x240/0x240