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kukaiLiu

@godzhou0909 linux的补丁
di110.c di_utils.c
kernel\linux-5.4\drivers\char\sunxi-di\common
kernel\linux-5.4\drivers\char\sunxi-di\drv_div1xx
替换了这两个文件

kukaiLiu

@kukailiu 在 T113 tvd的DI崩溃的问题中说：

> ./tvd_test_usrptr 4 0 720 576 /tmp 4 10000 25
> ================Usrage================
> /fbinit           means:clean /dev/fb0
> /fbinit 0         means:clean /dev/fb0
> /fbinit 1         means:clean /dev/fb1
> /fbinit 2         means:clean /dev/fb2
> ================usrage================
> cleanning /dev/fb0 ...
> clean /dev/fb0 finish
> 
> ===begin IonAllocOpen 
> pid: 7301, g_pAllocContext = 0x862378 
> (getInstance 91)
> init chwd sucess !
> (HwDisplay 284)
> (hwd_init 1259)
> [ 2130.559652] disp_al_manager_apply ouput_type:0
> [ 2130.565275] [DISP] disp_device_attached_and_enable,line:235:
> [ 2130.565280] attached ok, mgr1<-->dev1
> [ 2130.575828] [DISP] disp_device_attached_and_enable,line:248:
> [ 2130.575838] type:2,mode:14,fmt:yuv444,bits:8bits,eotf:4,cs:0 dvi_hdmi:2, range:2 scan:0 ratio:8
> open /dev/deinterlace OK, F:di_open,L:26
> di version[1.0.0], hw_ip[272]
> di_buf size is 622080
> app cmd=-1072150272
> di_buf size is 622080
> app cmd=-1072150272
> di_buf si[ 2130.596919] [tvd] tvd_open:1924
> ze is 622080
> app cmd=-1072150272
> [ 2130.610773] [tvd] tvd_open:1925 open = video4
> [ 2130.610781] [tvd] tvd_open:1936 single_chanel!
> [ 2130.623336] [tvd] tvd_is_opened:362
> [ 2130.627224] [tvd] __tvd_init:554
> [ 2130.630850] [tvd] tvd_open:1987 request_irq:63
> [ 2130.635897] [tvd] __tvd_clk_init:392
> [ 2130.639912] [tvd] __tvd_clk_init:395 __tvd_clk_init: dev->interface = 0, dev->system = 0
> [ 2130.648980] [tvd] __tvd_clk_init:423 div = 8
> [ 2130.653788] [tvd] __tvd_clk_init:446 tvd0: parent = 216000000, clk = 27000000
> [ 2130.661780] [tvd] __tvd_clk_enable:457
> [ 2130.665983] [tvd] tvd_start_opened:372
> open /dev/video4 fd = 9
> [ 2130.670283] [tvd] vidioc_s_input:1776 vidioc_s_input: input_num = 0
> [ 2130.679495] [tvd] vidioc_s_parm:1803
> fmt.fmt.pix_mp.pixelformat=825382478
> [ 2130.683556] [tvd] vidioc_s_fmt_vid_cap:1509
> [ 2130.691512] [tvd] __get_format:1187
> [ 2130.695403] [tvd] __get_format:1196 fourcc = 825382478
> [ 2130.701161] [tvd] vidioc_s_fmt_vid_cap:1575 vidioc_s_fmt_vid_cap:need to reinit clk and tvd
> [ 2130.710501] [tvd] __tvd_clk_init:392
> [ 2130.714492] [tvd] __tvd_clk_init:395 __tvd_clk_init: dev->interface = 0, dev->system = 1
> [ 2130.723590] [tvd] __tvd_clk_init:423 div = 8
> [ 2130.728368] [tvd] __tvd_clk_init:446 tvd0: parent = 216000000, clk = 27000000
> [ 2130.736366] [tvd] vidioc_s_fmt_vid_cap:1598 
> [ 2130.736366] interface=0
> [ 2130.736366] system=PAL
> [ 2130.736366] format=0
> [ 2130.736366] output_fmt=YUV420
> [ 2130.752221] [tvd] vidioc_s_fmt_vid_cap:1602 
> [ 2130.752221] row=1
> [ 2130.752221] column=1
> [ 2130.752221] ch[0]=0
> [ 2130.752221] ch[1]=0
> [ 2130.752221] ch[2]=0
> [ 2130.752221] ch[3]=0
> [ 2130.770879] [tvd] vidioc_s_fmt_vid_cap:1604 
> [ 2130.770879] width=720
> [ 2130.770879] height=576
> [ 2130.770879] dev->sel=0
> [ 2130.783429] [tvd] vidioc_s_fmt_vid_cap:1605 ldh test ----------------------------------------------------- 00
> [ 2130.794500] [tvd] __tvd_config:569
> [ 2130.798351] [tvd] tvd_cagc_and_3d_config:1430
> [ 2130.803241] [tvd] __tvd_fetch_sysconfig:2693
> [ 2130.808223] [tvd] tvd_cagc_and_3d_config:1456 tvd0 agc auto mode
> [ 2130.814965] [tvd] __tvd_fetch_sysconfig:2693
> [ 2130.819915] [tvd] tvd_cagc_and_3d_config:1465 tvd0 CAGC enable:0x1
> [ 2130.826815] [tvd] __tvd_fetch_sysconfig:2693
> [ 2130.831745] [tvd] __tvd_3d_comp_mem_request:636
> [ 2130.839156] [tvd] tvd_cagc_and_3d_config:1492 tvd0 3d enable :0x47400000
> [ 2130.846671] [tvd] tvd_cagc_and_3d_config:1498 tvd_cagc_and_3d_config:Enable _3D_FLITER:1,used:1
> [ 2130.856467] [tvd] vidioc_g_fmt_vid_cap:1094
> [ 2130.861159] [tvd] __get_status:1043
> [ 2131.065072] [tvd] __get_status:1083 tvd0 locked:1 system:1
> [ 2131.071221] [tvd] vidioc_g_fmt_vid_cap:1146 system = 1, w = 720, h = 576
> resolution got from sensor = 720*576 num_planes = 0
> [ 2131.078780] [tvd] vidioc_reqbufs:1619
> [ 2131.087468] [tvd] queue_setup:866
> [ 2131.091202] [tvd] queue_setup:894 queue_setup, buffer count=3, size=622080
> VIDIOC_QUERYBUF buf.length=622080
> app cmd=-1072150272
> VIDIOC_QUERYBUF buf.length=622080
> app cmd=-1072150272
> VIDIOC_QUERYBUF buf.length=622080
> app cmd=-1072150[ 2131.102979] [tvd] vidioc_streamon:1647
> 272
> [ 2131.117391] [tvd] start_streaming:941
> [ 2131.121899] [tvd] tvd_start_generating:346
> [ 2131.126471] [tvd] tvd_start_generating:346
> [ 2131.131064] [tvd] vidioc_streamon:1688 Out vidioc_streamon:0
> VIDIOC_STREAMON ok
> [ 2131.196886] [tvd] tvd_isr:785 In tvd_isr
> the output type: 1(2)
> [ 2162.982904] ------------[ cut here ]------------
> [ 2162.988091] kernel BUG at /home/liudonghai/SambaDir/Project/t113/T113-Linux-nand/kernel/linux-5.4/arch/arm/mm/dma-mapping.c:1224!
> [ 2163.001131] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
> [ 2163.007654] Modules linked in:
> [ 2163.011074] CPU: 0 PID: 7309 Comm: tvd_test_usrptr Not tainted 5.4.61 #7
> [ 2163.018581] Hardware name: Generic DT based system
> [ 2163.023948] PC is at __free_iova+0x68/0xa0
> [ 2163.028533] LR is at __free_iova+0x30/0xa0
> [ 2163.033104] pc : [<c0110288>]    lr : [<c0110250>]    psr: a00a0013
> [ 2163.040120] sp : c52cddb0  ip : 00000000  fp : 00000051
> [ 2163.045963] r10: 00000000  r9 : 0000001f  r8 : 00098000
> [ 2163.051806] r7 : 00000000  r6 : 08000000  r5 : c5e567c0  r4 : f8098000
> [ 2163.059111] r3 : 00000020  r2 : 00098000  r1 : 08000000  r0 : 0000001f
> [ 2163.066416] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
> [ 2163.074407] Control: 10c5387d  Table: 4527006a  DAC: 00000051
> [ 2163.080830] Process tvd_test_usrptr (pid: 7309, stack limit = 0x25a696ce)
> [ 2163.088431] Stack: (0xc52cddb0 to 0xc52ce000)
> [ 2163.093308] dda0:                                     00098000 f8000000 c5e567c0 00000001
> [ 2163.102469] ddc0: c6097010 00000002 00000000 c0110304 c5250180 00000000 00000020 c01111e8
> [ 2163.111626] dde0: c5250e00 c01111a8 80ec0dec 00000000 80ec59b4 00000000 00000000 c03c5d00
> [ 2163.120776] de00: 00000020 00000001 cfdbde6c c4c88800 c0b3ad08 c03c8304 00000000 c6802580
> [ 2163.129930] de20: 00000cc0 c03c85cc c52cc000 c01d3d24 80ebf6b9 00000000 c03c7d08 00000000
> [ 2163.139088] de40: 00000110 c0b03bc8 b6a36ce0 c4c88800 c4c8be00 c03c868c c6eb3d80 c0b06d80
> [ 2163.148247] de60: c52cde94 c06822c0 c52cde94 c0139238 c0b00000 c0b00018 c6218ec0 c0b06d80
> [ 2163.157403] de80: c6218ec0 c6eb3d80 c0b06d80 c62192d0 c52cdec4 c067e7bc 00000000 cfdbde6c
> [ 2163.166553] dea0: 00000001 c6218ec0 c52cc000 c0b03bc8 c52cdf20 cfdbde6c c52cdf20 c52cc000
> [ 2163.175706] dec0: c0b03bc8 00000001 c52cdf80 c01702bc c52cdf20 c06818a8 c6ead308 cfdbde6c
> [ 2163.184868] dee0: c087bfe4 b6a36ce0 c5f0cac0 c4e2c900 41104408 b6a36ce0 c52cc000 c0b03bc8
> [ 2163.194021] df00: b6a36df4 c01eb8b8 b6a36ce0 c01ec648 00000001 c52cdf80 c52cc000 c0170a78
> [ 2163.203169] df20: c52cdf20 00000000 00000000 00000000 99bad90d 000001f7 99ba15bd 000001f7
> [ 2163.212327] df40: c016fcb8 c6eb26c0 01000000 00000000 c4e2c900 00000001 00004000 c6246a40
> [ 2163.221475] df60: 00000005 cfdbde6c 00000036 00000005 c4e2c901 c4e2c900 41104408 b6a36ce0
> [ 2163.230629] df80: c52cc000 00000036 b6a36df4 c01ec728 b6a37450 bef40c20 bef40c1e 00000036
> [ 2163.239784] dfa0: c0101228 c0101000 b6a37450 bef40c20 00000005 41104408 b6a36ce0 b6a36ce0
> [ 2163.248941] dfc0: b6a37450 bef40c20 bef40c1e 00000036 b6f88cc0 00000000 00000000 b6a36df4
> [ 2163.258093] dfe0: 00029074 b6a36cc4 00011bc8 b6ca4958 a00a0030 00000005 00000000 00000000
> [ 2163.267245] [<c0110288>] (__free_iova) from [<c0110304>] (__iommu_remove_mapping+0x44/0x50)
> [ 2163.276596] [<c0110304>] (__iommu_remove_mapping) from [<c01111e8>] (arm_iommu_unmap_sg+0x40/0x74)
> [ 2163.286618] [<c01111e8>] (arm_iommu_unmap_sg) from [<c03c5d00>] (di_dma_buf_self_unmap+0x58/0xa0)
> [ 2163.296552] [<c03c5d00>] (di_dma_buf_self_unmap) from [<c03c8304>] (di_client_process_fb+0x5fc/0x718)
> [ 2163.306871] [<c03c8304>] (di_client_process_fb) from [<c03c868c>] (di_ioctl+0x130/0x200)
> [ 2163.315918] [<c03c868c>] (di_ioctl) from [<c01eb8b8>] (vfs_ioctl+0x18/0x3c)
> [ 2163.323709] [<c01eb8b8>] (vfs_ioctl) from [<c01ec648>] (do_vfs_ioctl+0x618/0x6c4)
> [ 2163.332085] [<c01ec648>] (do_vfs_ioctl) from [<c01ec728>] (ksys_ioctl+0x34/0x5c)
> [ 2163.340368] [<c01ec728>] (ksys_ioctl) from [<c0101000>] (ret_fast_syscall+0x0/0x54)
> [ 2163.348937] Exception stack(0xc52cdfa8 to 0xc52cdff0)
> [ 2163.354588] dfa0:                   b6a37450 bef40c20 00000005 41104408 b6a36ce0 b6a36ce0
> [ 2163.363744] dfc0: b6a37450 bef40c20 bef40c1e 00000036 b6f88cc0 00000000 00000000 b6a36df4
> [ 2163.372888] dfe0: 00029074 b6a36cc4 00011bc8 b6ca4958
> [ 2163.378545] Code: e0867007 e1a0a62a e1540007 9a000000 (e7f001f2) 
> [ 2163.385372] ---[ end trace 27d4a6a03854a256 ]---

已解决，添加DI的一些补丁后，没此错误

kukaiLiu

在the output type: 是会等几秒后，会出现内核崩溃，请教下这种改如何处理？

./tvd_test_usrptr 4 0 720 576 /tmp 4 10000 25
================Usrage================
/fbinit           means:clean /dev/fb0
/fbinit 0         means:clean /dev/fb0
/fbinit 1         means:clean /dev/fb1
/fbinit 2         means:clean /dev/fb2
================usrage================
cleanning /dev/fb0 ...
clean /dev/fb0 finish

===begin IonAllocOpen 
pid: 7301, g_pAllocContext = 0x862378 
(getInstance 91)
init chwd sucess !
(HwDisplay 284)
(hwd_init 1259)
[ 2130.559652] disp_al_manager_apply ouput_type:0
[ 2130.565275] [DISP] disp_device_attached_and_enable,line:235:
[ 2130.565280] attached ok, mgr1<-->dev1
[ 2130.575828] [DISP] disp_device_attached_and_enable,line:248:
[ 2130.575838] type:2,mode:14,fmt:yuv444,bits:8bits,eotf:4,cs:0 dvi_hdmi:2, range:2 scan:0 ratio:8
open /dev/deinterlace OK, F:di_open,L:26
di version[1.0.0], hw_ip[272]
di_buf size is 622080
app cmd=-1072150272
di_buf size is 622080
app cmd=-1072150272
di_buf si[ 2130.596919] [tvd] tvd_open:1924
ze is 622080
app cmd=-1072150272
[ 2130.610773] [tvd] tvd_open:1925 open = video4
[ 2130.610781] [tvd] tvd_open:1936 single_chanel!
[ 2130.623336] [tvd] tvd_is_opened:362
[ 2130.627224] [tvd] __tvd_init:554
[ 2130.630850] [tvd] tvd_open:1987 request_irq:63
[ 2130.635897] [tvd] __tvd_clk_init:392
[ 2130.639912] [tvd] __tvd_clk_init:395 __tvd_clk_init: dev->interface = 0, dev->system = 0
[ 2130.648980] [tvd] __tvd_clk_init:423 div = 8
[ 2130.653788] [tvd] __tvd_clk_init:446 tvd0: parent = 216000000, clk = 27000000
[ 2130.661780] [tvd] __tvd_clk_enable:457
[ 2130.665983] [tvd] tvd_start_opened:372
open /dev/video4 fd = 9
[ 2130.670283] [tvd] vidioc_s_input:1776 vidioc_s_input: input_num = 0
[ 2130.679495] [tvd] vidioc_s_parm:1803
fmt.fmt.pix_mp.pixelformat=825382478
[ 2130.683556] [tvd] vidioc_s_fmt_vid_cap:1509
[ 2130.691512] [tvd] __get_format:1187
[ 2130.695403] [tvd] __get_format:1196 fourcc = 825382478
[ 2130.701161] [tvd] vidioc_s_fmt_vid_cap:1575 vidioc_s_fmt_vid_cap:need to reinit clk and tvd
[ 2130.710501] [tvd] __tvd_clk_init:392
[ 2130.714492] [tvd] __tvd_clk_init:395 __tvd_clk_init: dev->interface = 0, dev->system = 1
[ 2130.723590] [tvd] __tvd_clk_init:423 div = 8
[ 2130.728368] [tvd] __tvd_clk_init:446 tvd0: parent = 216000000, clk = 27000000
[ 2130.736366] [tvd] vidioc_s_fmt_vid_cap:1598 
[ 2130.736366] interface=0
[ 2130.736366] system=PAL
[ 2130.736366] format=0
[ 2130.736366] output_fmt=YUV420
[ 2130.752221] [tvd] vidioc_s_fmt_vid_cap:1602 
[ 2130.752221] row=1
[ 2130.752221] column=1
[ 2130.752221] ch[0]=0
[ 2130.752221] ch[1]=0
[ 2130.752221] ch[2]=0
[ 2130.752221] ch[3]=0
[ 2130.770879] [tvd] vidioc_s_fmt_vid_cap:1604 
[ 2130.770879] width=720
[ 2130.770879] height=576
[ 2130.770879] dev->sel=0
[ 2130.783429] [tvd] vidioc_s_fmt_vid_cap:1605 ldh test ----------------------------------------------------- 00
[ 2130.794500] [tvd] __tvd_config:569
[ 2130.798351] [tvd] tvd_cagc_and_3d_config:1430
[ 2130.803241] [tvd] __tvd_fetch_sysconfig:2693
[ 2130.808223] [tvd] tvd_cagc_and_3d_config:1456 tvd0 agc auto mode
[ 2130.814965] [tvd] __tvd_fetch_sysconfig:2693
[ 2130.819915] [tvd] tvd_cagc_and_3d_config:1465 tvd0 CAGC enable:0x1
[ 2130.826815] [tvd] __tvd_fetch_sysconfig:2693
[ 2130.831745] [tvd] __tvd_3d_comp_mem_request:636
[ 2130.839156] [tvd] tvd_cagc_and_3d_config:1492 tvd0 3d enable :0x47400000
[ 2130.846671] [tvd] tvd_cagc_and_3d_config:1498 tvd_cagc_and_3d_config:Enable _3D_FLITER:1,used:1
[ 2130.856467] [tvd] vidioc_g_fmt_vid_cap:1094
[ 2130.861159] [tvd] __get_status:1043
[ 2131.065072] [tvd] __get_status:1083 tvd0 locked:1 system:1
[ 2131.071221] [tvd] vidioc_g_fmt_vid_cap:1146 system = 1, w = 720, h = 576
resolution got from sensor = 720*576 num_planes = 0
[ 2131.078780] [tvd] vidioc_reqbufs:1619
[ 2131.087468] [tvd] queue_setup:866
[ 2131.091202] [tvd] queue_setup:894 queue_setup, buffer count=3, size=622080
VIDIOC_QUERYBUF buf.length=622080
app cmd=-1072150272
VIDIOC_QUERYBUF buf.length=622080
app cmd=-1072150272
VIDIOC_QUERYBUF buf.length=622080
app cmd=-1072150[ 2131.102979] [tvd] vidioc_streamon:1647
272
[ 2131.117391] [tvd] start_streaming:941
[ 2131.121899] [tvd] tvd_start_generating:346
[ 2131.126471] [tvd] tvd_start_generating:346
[ 2131.131064] [tvd] vidioc_streamon:1688 Out vidioc_streamon:0
VIDIOC_STREAMON ok
[ 2131.196886] [tvd] tvd_isr:785 In tvd_isr
the output type: 1(2)
[ 2162.982904] ------------[ cut here ]------------
[ 2162.988091] kernel BUG at /home/liudonghai/SambaDir/Project/t113/T113-Linux-nand/kernel/linux-5.4/arch/arm/mm/dma-mapping.c:1224!
[ 2163.001131] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
[ 2163.007654] Modules linked in:
[ 2163.011074] CPU: 0 PID: 7309 Comm: tvd_test_usrptr Not tainted 5.4.61 #7
[ 2163.018581] Hardware name: Generic DT based system
[ 2163.023948] PC is at __free_iova+0x68/0xa0
[ 2163.028533] LR is at __free_iova+0x30/0xa0
[ 2163.033104] pc : [<c0110288>]    lr : [<c0110250>]    psr: a00a0013
[ 2163.040120] sp : c52cddb0  ip : 00000000  fp : 00000051
[ 2163.045963] r10: 00000000  r9 : 0000001f  r8 : 00098000
[ 2163.051806] r7 : 00000000  r6 : 08000000  r5 : c5e567c0  r4 : f8098000
[ 2163.059111] r3 : 00000020  r2 : 00098000  r1 : 08000000  r0 : 0000001f
[ 2163.066416] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
[ 2163.074407] Control: 10c5387d  Table: 4527006a  DAC: 00000051
[ 2163.080830] Process tvd_test_usrptr (pid: 7309, stack limit = 0x25a696ce)
[ 2163.088431] Stack: (0xc52cddb0 to 0xc52ce000)
[ 2163.093308] dda0:                                     00098000 f8000000 c5e567c0 00000001
[ 2163.102469] ddc0: c6097010 00000002 00000000 c0110304 c5250180 00000000 00000020 c01111e8
[ 2163.111626] dde0: c5250e00 c01111a8 80ec0dec 00000000 80ec59b4 00000000 00000000 c03c5d00
[ 2163.120776] de00: 00000020 00000001 cfdbde6c c4c88800 c0b3ad08 c03c8304 00000000 c6802580
[ 2163.129930] de20: 00000cc0 c03c85cc c52cc000 c01d3d24 80ebf6b9 00000000 c03c7d08 00000000
[ 2163.139088] de40: 00000110 c0b03bc8 b6a36ce0 c4c88800 c4c8be00 c03c868c c6eb3d80 c0b06d80
[ 2163.148247] de60: c52cde94 c06822c0 c52cde94 c0139238 c0b00000 c0b00018 c6218ec0 c0b06d80
[ 2163.157403] de80: c6218ec0 c6eb3d80 c0b06d80 c62192d0 c52cdec4 c067e7bc 00000000 cfdbde6c
[ 2163.166553] dea0: 00000001 c6218ec0 c52cc000 c0b03bc8 c52cdf20 cfdbde6c c52cdf20 c52cc000
[ 2163.175706] dec0: c0b03bc8 00000001 c52cdf80 c01702bc c52cdf20 c06818a8 c6ead308 cfdbde6c
[ 2163.184868] dee0: c087bfe4 b6a36ce0 c5f0cac0 c4e2c900 41104408 b6a36ce0 c52cc000 c0b03bc8
[ 2163.194021] df00: b6a36df4 c01eb8b8 b6a36ce0 c01ec648 00000001 c52cdf80 c52cc000 c0170a78
[ 2163.203169] df20: c52cdf20 00000000 00000000 00000000 99bad90d 000001f7 99ba15bd 000001f7
[ 2163.212327] df40: c016fcb8 c6eb26c0 01000000 00000000 c4e2c900 00000001 00004000 c6246a40
[ 2163.221475] df60: 00000005 cfdbde6c 00000036 00000005 c4e2c901 c4e2c900 41104408 b6a36ce0
[ 2163.230629] df80: c52cc000 00000036 b6a36df4 c01ec728 b6a37450 bef40c20 bef40c1e 00000036
[ 2163.239784] dfa0: c0101228 c0101000 b6a37450 bef40c20 00000005 41104408 b6a36ce0 b6a36ce0
[ 2163.248941] dfc0: b6a37450 bef40c20 bef40c1e 00000036 b6f88cc0 00000000 00000000 b6a36df4
[ 2163.258093] dfe0: 00029074 b6a36cc4 00011bc8 b6ca4958 a00a0030 00000005 00000000 00000000
[ 2163.267245] [<c0110288>] (__free_iova) from [<c0110304>] (__iommu_remove_mapping+0x44/0x50)
[ 2163.276596] [<c0110304>] (__iommu_remove_mapping) from [<c01111e8>] (arm_iommu_unmap_sg+0x40/0x74)
[ 2163.286618] [<c01111e8>] (arm_iommu_unmap_sg) from [<c03c5d00>] (di_dma_buf_self_unmap+0x58/0xa0)
[ 2163.296552] [<c03c5d00>] (di_dma_buf_self_unmap) from [<c03c8304>] (di_client_process_fb+0x5fc/0x718)
[ 2163.306871] [<c03c8304>] (di_client_process_fb) from [<c03c868c>] (di_ioctl+0x130/0x200)
[ 2163.315918] [<c03c868c>] (di_ioctl) from [<c01eb8b8>] (vfs_ioctl+0x18/0x3c)
[ 2163.323709] [<c01eb8b8>] (vfs_ioctl) from [<c01ec648>] (do_vfs_ioctl+0x618/0x6c4)
[ 2163.332085] [<c01ec648>] (do_vfs_ioctl) from [<c01ec728>] (ksys_ioctl+0x34/0x5c)
[ 2163.340368] [<c01ec728>] (ksys_ioctl) from [<c0101000>] (ret_fast_syscall+0x0/0x54)
[ 2163.348937] Exception stack(0xc52cdfa8 to 0xc52cdff0)
[ 2163.354588] dfa0:                   b6a37450 bef40c20 00000005 41104408 b6a36ce0 b6a36ce0
[ 2163.363744] dfc0: b6a37450 bef40c20 bef40c1e 00000036 b6f88cc0 00000000 00000000 b6a36df4
[ 2163.372888] dfe0: 00029074 b6a36cc4 00011bc8 b6ca4958
[ 2163.378545] Code: e0867007 e1a0a62a e1540007 9a000000 (e7f001f2) 
[ 2163.385372] ---[ end trace 27d4a6a03854a256 ]---

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