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[  141.440371] kworker/u4:7: page allocation failure: order:0, mode:0x2204020
[  141.443857] CPU: 1 PID: 765 Comm: kworker/u4:7 Not tainted 4.4.8-devel-16.05.0-00408-g9ad9927-dirty #581
[  141.448805] Hardware name: Marvell Armada 3720 Development Board DB-88F3720-DDR3 (DT)
[  141.452781] Workqueue: btrfs-submit btrfs_submit_helper
[  141.455519] Call trace:
[  141.456830] [<ffffffc00008a534>] dump_backtrace+0x0/0x144
[  141.459533] [<ffffffc00008a698>] show_stack+0x20/0x28
[  141.462238] [<ffffffc000468964>] dump_stack+0x90/0xb0
[  141.464852] [<ffffffc00018f4b4>] warn_alloc_failed+0x17c/0x258
[  141.467826] [<ffffffc0001932c8>] __alloc_pages_nodemask+0x6f4/0xb70
[  141.471162] [<ffffffc0001df2a0>] new_slab+0x33c/0x3cc
[  141.473690] [<ffffffc0001e1a34>] ___slab_alloc.constprop.62+0x2c8/0x358
[  141.477114] [<ffffffc0001e1b08>] __slab_alloc.isra.59.constprop.61+0x44/0x54
[  141.480763] [<ffffffc0001e1d6c>] kmem_cache_alloc+0x254/0x280
[  141.483693] [<ffffffc00056e3d8>] scsi_host_alloc_command+0x38/0xc0
[  141.486891] [<ffffffc00056ee54>] scsi_get_command+0x34/0x170
[  141.489819] [<ffffffc000576720>] scsi_prep_fn+0x130/0x140
[  141.492658] [<ffffffc00044a750>] blk_peek_request+0x180/0x2a8
[  141.495631] [<ffffffc0005770ec>] scsi_request_fn+0x54/0x5b4
[  141.498469] [<ffffffc0004461ac>] __blk_run_queue+0x40/0x58
[  141.501397] [<ffffffc000447434>] queue_unplugged+0x38/0x10c
[  141.504281] [<ffffffc00044ab90>] blk_flush_plug_list+0x1d4/0x228
[  141.507255] [<ffffffc00044afac>] blk_finish_plug+0x44/0x60
[  141.510183] [<ffffffc0003be438>] run_scheduled_bios+0x248/0x450
[  141.513336] [<ffffffc0003be660>] pending_bios_fn+0x20/0x2c
[  141.516178] [<ffffffc0003c83f8>] normal_work_helper+0xa4/0x438
[  141.519200] [<ffffffc0003c8a34>] btrfs_submit_helper+0x20/0x2c
[  141.522134] [<ffffffc0000db898>] process_one_work+0x150/0x438
[  141.525196] [<ffffffc0000dbcc0>] worker_thread+0x140/0x440
[  141.528038] [<ffffffc0000e2078>] kthread+0xe8/0xfc
[  141.530520] [<ffffffc000085c50>] ret_from_fork+0x10/0x40
[  141.533226] Mem-Info:
[  141.534404] active_anon:1685 inactive_anon:33 isolated_anon:0
[  141.534404]  active_file:16192 inactive_file:79616 isolated_file:0
[  141.534404]  unevictable:0 dirty:3959 writeback:11157 unstable:0
[  141.534404]  slab_reclaimable:2863 slab_unreclaimable:2124
[  141.534404]  mapped:2010 shmem:80 pagetables:95 bounce:0
[  141.534404]  free:1863 free_pcp:191 free_cma:751
[  141.551708] DMA free:7452kB min:2612kB low:3264kB high:3916kB active_anon:6740kB inactive_anon:132kB active_file:64768kB inactive_file:318464kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:524224kB managed:427888kB mlocked:0kB dirty:15836kB writeback:44628kB mapped:8040kB shmem:320kB slab_reclaimable:11452kB slab_unreclaimable:8496kB kernel_stack:2448kB pagetables:380kB unstable:0kB bounce:0kB free_pcp:764kB local_pcp:732kB free_cma:3004kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
[  141.575145] lowmem_reserve[]: 0 0 0
[  141.576906] DMA: 3*4kB (UC) 107*8kB (UMEC) 190*16kB (UMEC) 39*32kB (UMC) 2*64kB (C) 1*128kB (C) 0*256kB 0*512kB 2*1024kB (C) 0*2048kB 0*4096kB = 7460kB
[  141.583858] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[  141.588362] 95892 total pagecache pages
[  141.590256] 0 pages in swap cache
[  141.591835] Swap cache stats: add 0, delete 0, find 0/0
[  141.594718] Free swap  = 0kB
[  141.596116] Total swap = 0kB
[  141.597648] 131056 pages RAM
[  141.599091] 0 pages HighMem/MovableOnly
[  141.601119] 24084 pages reserved
[  141.602923] 4096 pages cma reserved
[  141.604731] SLUB: Unable to allocate memory on node -1 (gfp=0x2088020)
[  141.607935]   cache: mnt_cache, object size: 384, buffer size: 384, default order: 1, min order: 0
[  141.612756]   node 0: slabs: 13, objs: 262, free: 0