dma allocation failed whiling taking picture

[raymondwang]

my board design is based on SabreSD, and my kernel is 3.0.35, android release is android_jb_4.2.2_1.1.0.

After system running a time (one day or more) ,I found kernel report dma allocation failure as following message.

<6>Write initial setting done.
<6>Write af fw start...
<6>Write af fw end
<4> new frame_rate is 1,capturemode is 0!
<6>binder: 2950:2960 refcount change on invalid ref 38
<3>Writting resolution [2592x1944] done
<3>wait 400 ms for state 7
<4> new frame_rate is 1,capturemode is 6!
<4>RequestHandle: page allocation failure: order:12, mode:0xd1
<4>[<c004e9e4>] (unwind_backtrace+0x0/0x138) from [<c00f6754>] (warn_alloc_failed+0xc8/0x100)
<4>[<c00f6754>] (warn_alloc_failed+0xc8/0x100) from [<c00f9164>] (__alloc_pages_nodemask+0x5a8/0x7a4)
<4>[<c00f9164>] (__alloc_pages_nodemask+0x5a8/0x7a4) from [<c0051ab0>] (__dma_alloc+0xa0/0x2fc)
<4>[<c0051ab0>] (__dma_alloc+0xa0/0x2fc) from [<c00522e8>] (dma_alloc_coherent+0x54/0x60)
<4>[<c00522e8>] (dma_alloc_coherent+0x54/0x60) from [<c03ede94>] (csi_enc_enabling_tasks+0x294/0x348)
<4>[<c03ede94>] (csi_enc_enabling_tasks+0x294/0x348) from [<c03e7238>] (mxc_streamon+0x8c/0x258)
<4>[<c03e7238>] (mxc_streamon+0x8c/0x258) from [<c03e97fc>] (mxc_v4l_do_ioctl+0x720/0x28a8)
<4>[<c03e97fc>] (mxc_v4l_do_ioctl+0x720/0x28a8) from [<c03da074>] (video_usercopy+0x98/0x4d4)
<4>[<c03da074>] (video_usercopy+0x98/0x4d4) from [<c03d961c>] (v4l2_ioctl+0x11c/0x138)
<4>[<c03d961c>] (v4l2_ioctl+0x11c/0x138) from [<c0139e4c>] (do_vfs_ioctl+0x80/0x54c)
<4>[<c0139e4c>] (do_vfs_ioctl+0x80/0x54c) from [<c013a350>] (sys_ioctl+0x38/0x5c)
<4>[<c013a350>] (sys_ioctl+0x38/0x5c) from [<c0047900>] (ret_fast_syscall+0x0/0x30)
<4>Mem-info:
<4>Normal per-cpu:
<4>CPU 0: hi: 186, btch: 31 usd: 0
<4>CPU 1: hi: 186, btch: 31 usd: 0
<4>HighMem per-cpu:
<4>CPU 0: hi: 186, btch: 31 usd: 179
<4>CPU 1: hi: 186, btch: 31 usd: 0
<4>active_anon:89460 inactive_anon:147 isolated_anon:0
<4> active_file:14756 inactive_file:17833 isolated_file:32
<4> unevictable:202 dirty:5 writeback:0 unstable:0
<4> free:49183 slab_reclaimable:1232 slab_unreclaimable:3369
<4> mapped:15164 shmem:161 pagetables:3040 bounce:0
<4>Normal free:131428kB min:2516kB low:3144kB high:3772kB active_anon:168116kB inactive_anon:188kB active_file:0kB inactive_file:104kB unevictable:0kB isolated(anon):0kB
resent:396160kB mlocked:0kB dirty:0kB writeback:0kB mapped:324kB shmem:200kB slab_reclaimable:4928kB slab_unreclaimable:13476kB kernel_stack:5896kB pagetables:12160kB uns
writeback_tmp:0kB pages_scanned:663 all_unreclaimable? yes
<4>lowmem_reserve[]: 0 3281 3281
<4>HighMem free:65924kB min:408kB low:1072kB high:1740kB active_anon:189724kB inactive_anon:400kB active_file:59128kB inactive_file:70676kB unevictable:808kB isolated(ano
):0kB present:419968kB mlocked:0kB dirty:20kB writeback:0kB mapped:59876kB shmem:444kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstabl
teback_tmp:0kB pages_scanned:2 all_unreclaimable? no
<4>lowmem_reserve[]: 0 0 0
<4>Normal: 1263*4kB 539*8kB 241*16kB 186*32kB 126*64kB 74*128kB 46*256kB 42*512kB 8*1024kB 6*2048kB 4*4096kB 3*8192kB 0*16384kB 0*32768kB = 131428kB
<4>HighMem: 1961*4kB 879*8kB 475*16kB 163*32kB 73*64kB 30*128kB 11*256kB 6*512kB 2*1024kB 1*2048kB 1*4096kB 2*8192kB 0*16384kB 0*32768kB = 66668kB
<4>32643 total pagecache pages
<4>0 pages in swap cache
<4>Swap cache stats: add 0, delete 0, find 0/0
<4>Free swap = 0kB
<4>Total swap = 0kB
<4>262144 pages of RAM
<4>55171 free pages
<4>69466 reserved pages
<4>4601 slab pages
<4>150544 pages shared
<4>0 pages swap cached
<3>ERROR: v4l2 capture: Allocate dummy frame failed.
<6>otg udc vbus rising wakeup
<7>try_wake_up_udc: udc out low power mode
<3>qpower-charger qpower-charger.0: Charger charging
<6>android_usb gadget: high speed config #1: android
<6>mtp_open

  I have merge patch from imx6q dma allocation error !, but it still can be repeated. Anyone encounter same issue?

[鑫王]

hi,raymondwang

     I met the same issue when taking a 3M picture using ov3640 on imx53 QSB platform.

     Have your problem been solved??

     Wait for your answer...

[raymondwang]

Sorry for reply you so late!

I don't found root cause of that issue. With most threads help in freescale community, I just enlarge my DMA buffer and issue

seems fixed. You can review my source code tree in https://github.com/xhteam/kernel_imx

You can check commit history, I am sorry I have no time to find commit for that issue.