海思音频，同时出现内存分配问题_问答

反复开启关闭音视频的过程中，出现HI_MPI_AI_EnableChn打开失败，导致没音频，出现失败的前系统会自动打印
<4>test.exe: page allocation failure: order:4, mode:0x40d0
<4>Backtrace:
<4>[] (dump_backtrace+0x0/0x110) from [] (dump_stack+0x18/0x1c)
<4> r6:00000000 r5:000040d0 r4:00000001 r3:68000013
<4>[] (dump_stack+0x0/0x1c) from [] (warn_alloc_failed+0xa0/0x114)
<4>[] (warn_alloc_failed+0x0/0x114) from [] (__alloc_pages_nodemask+0x3cc/0x604)
<4> r3:0000002d r2:00000000
<4> r8:00000000 r7:00000000 r6:c0563e0c r5:00000001 r4:00000000
<4>[] (__alloc_pages_nodemask+0x0/0x604) from [] (__get_free_pages+0x18/0x44)
<4>[] (__get_free_pages+0x0/0x44) from [] (__kmalloc+0x10c/0x110)
<4>[] (__kmalloc+0x0/0x110) from [] (VbCreatePool+0x88/0x520 [hi3520D_base])
<4> r7:00008200 r6:00000500 r5:00000000 r4:d25c2d80
<4>[] (VbCreatePool+0x0/0x520 [hi3520D_base]) from [] (VB_CreatePool+0x4c/0xa8 [hi3520D_base])
<4>[] (VB_CreatePool+0x0/0xa8 [hi3520D_base]) from [] (AIVbInit+0x7c/0x118 [hi3520D_ai])
<4> r4:00000015
<4>[] (AIVbInit+0x0/0x118 [hi3520D_ai]) from [] (AIDmaBufInit+0x450/0x604 [hi3520D_ai])
<4>[] (AIDmaBufInit+0x1ec/0x604 [hi3520D_ai]) from [] (ai_ioctl+0xc4/0x2a4 [hi3520D_ai])
<4>[] (ai_ioctl+0x0/0x2a4 [hi3520D_ai]) from [] (CMPI_UserCopy+0x84/0x174 [hi3520D_base])
<4> r8:00000000 r7:bf8d72c4 r6:00000000 r5:00000000 r4:00005a03
<4>[] (CMPI_UserCopy+0x0/0x174 [hi3520D_base]) from [] (AiIoctl+0x18/0x1c [hi3520D_ai])
<4>[] (AiIoctl+0x0/0x1c [hi3520D_ai]) from [] (do_vfs_ioctl+0x88/0x588)
<4>[] (do_vfs_ioctl+0x0/0x588) from [] (sys_ioctl+0x40/0x68)
<4>[] (sys_ioctl+0x0/0x68) from [] (ret_fast_syscall+0x0/0x30)
<4> r7:00000036 r6:0000002e r5:00005a03 r4:0000002e
<4>Mem-info:
<4>Normal per-cpu:
<4>CPU 0: hi: 90, btch: 15 usd: 0
<4>active_anon:1699 inactive_anon:77 isolated_anon:0
<4> active_file:9142 inactive_file:48241 isolated_file:0
<4> unevictable:1439 dirty:8 writeback:0 unstable:0
<4> free:1204 slab_reclaimable:7764 slab_unreclaimable:1868
<4> mapped:1146 shmem:94 pagetables:149 bounce:0
<4>Normal free:4816kB min:2208kB low:2760kB high:3312kB active_anon:6796kB inactive_anon:308kB active_file:36568kB inactive_file:192964kB unevictable:5756kB isolated(anon):0kB isolated(file):0kB present:304800kB mlocked:0kB dirty:32kB writeback:0kB mapped:4584kB shmem:376kB slab_reclaimable:31056kB slab_unreclaimable:7472kB kernel_stack:912kB pagetables:596kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
<4>lowmem_reserve[]: 0 0
<4>Normal: 172*4kB 252*8kB 116*16kB 2*32kB 3*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 4816kB
<4>58916 total pagecache pages
<4>76800 pages of RAM
<4>1389 free pages
<4>2149 reserved pages
<4>8465 slab pages
<4>58932 pages shared
<4>0 pages swap cached
的信息，怀疑是不是内存泄露了，或者是海思sdk的bug？
另外录像过程中，free查看海思的内存都是一直缓慢减少的并且到3M左右一直保持了很长一段时间，但是这个时候系统运行正常，这种现象是正常的么？

海思音频，同时出现内存分配问题

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