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[code]sample_vio invoked oom-killer: gfp_mask=0x24201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD), nodemask=0, order=0, oom_score_adj=0
CPU: 0 PID: 1552 Comm: sample_vio Tainted: P          O 4.9.37 #8
Hardware name: Hisilicon HI3559AV100 DEMO Board (DT)
Call trace:
[] dump_backtrace+0x0/0x198
[] show_stack+0x14/0x20
[] dump_stack+0x94/0xb8
[] dump_header.isra.5+0x5c/0x170
[] oom_kill_process+0x29c/0x4b8
[] out_of_memory+0xd0/0x3d8
[] __alloc_pages_nodemask+0xa98/0xab0
[] filemap_fault+0x32c/0x4e8
[] ext4_filemap_fault+0x38/0x58
[] __do_fault+0x68/0x108
[] handle_mm_fault+0x76c/0xbb8
[] do_page_fault+0x278/0x308
[] do_mem_abort+0x40/0xc0
Exception stack(0xffffffc01ff87df0 to 0xffffffc01ff87f20)
7de0:                                  0000000000000000 0000007f8270b8d0
7e00: 00000000ffffffff 0000007f88422a98 0000000080000000 ffffffc01fd23900
7e20: ffffffc01ff87e90 ffffff80080eef0c 0000007f8270a960 0000007f8270b8d0
7e40: ffffffc01ff87e80 ffffffc01ff87e48 0000000000000000 0000000000000000
7e60: ffffffc01ff87e80 ffffff80080876d8 0000000000000008 ffffffc01ff84000
7e80: 0000000000000000 ffffff8008082e0c 0000000000000000 ffffff8008082b44
7ea0: 00000000ffffffff 0000007f88422a98 0000000080000000 0000000000000015
7ec0: 0000000000000000 0000007f8270a960 00000000ffffffbb 0000007f8270a8ec
7ee0: 0000007f8270b2e8 0000007f8270b1e0 0000007f8270b8d0 0000000000000000
7f00: 0000000000000065 0000007f88499d48 0000000000000000 0000000000000030
[] do_el0_ia_bp_hardening+0x8c/0xb0
Exception stack(0xffffffc01ff87ea0 to 0xffffffc01ff87fd0)
7ea0: 00000000ffffffff 0000007f88422a98 0000000080000000 0000000000000015
7ec0: 0000000000000000 0000007f8270a960 00000000ffffffbb 0000007f8270a8ec
7ee0: 0000007f8270b2e8 0000007f8270b1e0 0000007f8270b8d0 0000000000000000
7f00: 0000000000000065 0000007f88499d48 0000000000000000 0000000000000030
7f20: 0000000000000000 0000000000000000 0000000000000002 0000000000000001
7f40: 0000000000000000 0000007f88422890 0000000000000000 0000000000000040
7f60: 0000007f8270b8d0 0000000000000000 0000000000518000 0000000000631000
7f80: 000000000000001d 0000000080247009 0000000000000001 0000000000631000
7fa0: 0000000000518350 0000007f8270a930 0000007f88422a88 0000007f8270a8f0
7fc0: 0000007f88422a98 0000000080000000
[] el0_ia+0x18/0x1c
Mem-Info:
active_anon:109136 inactive_anon:0 isolated_anon:0
active_file:59 inactive_file:69 isolated_file:0
unevictable:0 dirty:0 writeback:0 unstable:0
slab_reclaimable:391 slab_unreclaimable:2550
mapped:51 shmem:1 pagetables:340 bounce:0
free:2021 free_pcp:43 free_cma:768
Node 0 active_anon:436544kB inactive_anon:0kB active_file:236kB inactive_file:276kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:204kB dirty:0kB writeback:0kB shmem:4kB writeback_tmp:0kB unstable:0kB pages_scanned:21899 all_unreclaimable? yes
DMA free:8084kB min:8192kB low:10240kB high:12288kB active_anon:436544kB inactive_anon:0kB active_file:236kB inactive_file:276kB unevictable:0kB writepending:0kB present:524288kB managed:496404kB mlocked:0kB slab_reclaimable:1564kB slab_unreclaimable:10200kB kernel_stack:1504kB pagetables:1360kB bounce:0kB free_pcp:172kB local_pcp:172kB free_cma:3072kB
lowmem_reserve[]: 0 0 0
DMA: 5*4kB (UE) 20*8kB (UEC) 18*16kB (E) 14*32kB (UEC) 6*64kB (UEC) 3*128kB (EC) 5*256kB (UEC) 2*512kB (EC) 0*1024kB 2*2048kB (UC) 0*4096kB = 8084kB
145 total pagecache pages
131072 pages RAM
0 pages HighMem/MovableOnly
6971 pages reserved
1024 pages cma reserved
[ pid ] uid  tgid total_vm    rss nr_ptes nr_pmds swapents oom_score_adj name
[  891]    0 891    473    38    5    3       0       -1000 udevd
[  908]    0 908    473    45    5    3       0       -1000 udevd
[  911]    0 911    473    39    5    3       0       -1000 udevd
[ 1538]    0  1538    831    11    5    3       0          0 sh
[ 1542]    0  1542    831    12    4    3       0          0 exe
[ 1545]    0  1545 197510 108944    309    4       0          0 sample_vio
Out of memory: Kill process 1545 (sample_vio) score 853 or sacrifice child
Killed process 1545 (sample_vio) total-vm:790040kB, anon-rss:435776kB, file-rss:0kB, shmem-rss:0kB
oom_reaper: reaped process 1545 (sample_vio), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
Killed
mmz_userdev:mmz_userdev_release: MMB LEAK(pid=1545): 0xA7365000, 33177600 bytes, ''
mmz_userdev:mmz_userdev_release: mmb<0xa7365000> mapped to userspace 0x0000007f8370c000 will be unmaped!
[/code]

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