大家好，我将自己编译好的内核以及cramfs根文件系统烧写到dm6467T的flash中以后，根文件系统挂载成功，一些基本的命令如ls、cd等均可使用。可是当我运行自己的应用程序./app.out的时候，却出现了下面的错误：
========[audio_capture_info]========
period time = 128000
period_size = 1024 frames
periods per buffer = 16
buffer time = 2048000
buffer size = 16384 frames
mono
capture channels = 8
========~[audio_capture_info]========
Unable to handle kernel NULL pointer dereference at virtual address 0000000c
pgd = c1e90000
[0000000c] *pgd=8228f031, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT
Modules linked in: dsplinkk cmemk
CPU: 0 Not tainted (2.6.32-rc2-davinci1-g73dbf71-dirty #10)
PC is at touch_atime+0x10/0x15c
LR is at generic_file_aio_read+0x670/0x6e8
pc : [<c00b027c>] lr : [<c0073e98>] psr: 40000013
sp : c1f6bbf0 ip : c1f6bc20 fp : c1f6bc1c
r10: c2270ec0 r9 : 00000ec9 r8 : 0000058d
r7 : 00001000 r6 : 0000058d r5 : 00000000 r4 : 0058dec9
r3 : 00000000 r2 : c1177180 r1 : 00000000 r0 : 00000000
Flags: nZcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: 0005317f Table: 81e90000 DAC: 00000017
Process app.out (pid: 1896, stack limit = 0xc1f6a270)
Stack: (0xc1f6bbf0 to 0xc1f6c000)
bbe0: c00737ac c0038cf8 00001000 c047a5c0
bc00: 0058dec9 00000000 0000058d 00001000 c1f6bcac c1f6bc20 c0073e98 c00b027c
bc20: 0000057d 00000011 00000000 00000000 c11771c0 c1f6bd08 c1f6bcb8 c1177180
bc40: 00000000 00000000 c1f6bd08 c1f6a000 00000ec9 0000058e c2270e18 c1f6bd48
bc60: 0000058d 00000001 c00781e0 000b0004 00000000 c3478004 00000000 000b0004
bc80: c3400000 c1f6bcb8 c1177180 c1f6bcb8 c1f6bd48 c11771a0 0058dec9 fffffdee
bca0: c1f6bd74 c1f6bcb0 c009aca4 c0073838 004ddec5 00000000 c20025e0 000000d2
bcc0: 00000000 00000001 ffffffff c1177180 00000000 00000000 00000000 00000000
bce0: c10b8000 c1f6bd1c 00000000 00000000 c0091988 c10b8000 c0056418 c1f6bcfc
bd00: c1f6bcfc c1f6bd10 0058dec9 00000000 c0091294 c0090658 ffffffff c2231ec4
bd20: 000b0004 ffffffff 000002cf bf0182f8 c318d000 004ddec5 c1f6bd74 c1f6bd48
bd40: c0091b54 c00919b0 c33c8000 000b0004 bf000000 c3190000 c318a000 c318a010
bd60: c318d000 004ddec5 c1f6bd8c c1f6bd78 bf019b98 c009abf8 c318d000 c33c8000
bd80: c1f6bda4 c1f6bd90 bf0178f4 bf019b18 00000000 0058dec9 c1f6bdec c1f6bda8
bda0: bf016658 bf0178b0 c318a014 00000000 00000000 c33c8000 c33c8000 00010000
bdc0: bf017b34 00008000 c318a000 bf01f9b0 00000000 0005a68c 00000000 c1f6be50
bde0: c1f6be24 c1f6bdf0 bf017670 bf016344 c1f6be14 c318d000 bf018ee8 00008000
be00: c30a5000 00000000 00000008 bf01f9a0 0005a68c bf01f9ac c1f6be8c c1f6be28
be20: bf01b504 bf0175e0 0008ff73 0008ff03 452f0d64 00000001 c1fff5d8 c1de4458
be40: c1fff580 c21896a8 00000000 c2169180 00000002 bf01e1e4 bf01e1e4 bf01e1b8
be60: c1fff5d8 00006c05 00008000 c1f6bebc 412f0d7c 412f0d7c c1f6a000 0006e110
be80: c1f6bef4 c1f6be90 bf01c8e4 bf01b3a4 c21896a0 c2169180 c1f6bebc 00000000
bea0: c1fff5d8 400844ff 4a8e7000 c1a42680 c1f6bf2c c1f6bec0 c008cbdc 00008000
bec0: 00000000 0005a68c 00000001 452f0d64 00008000 c1f6bee0 c1a42680 412f0d7c
bee0: 00006c05 c1a42680 c1f6bf14 c1f6bef8 c00a8a00 bf01c47c c21896a8 c1a42680
bf00: c1de43b0 00000017 c1f6bf7c c1f6bf18 c00a9068 c00a8994 00000001 0008ff03
bf20: c1f6bf74 c1f6bf30 c1f6bf64 c1f6bf38 c018a92c c0038cf8 c1f6a000 c1f6a000
bf40: 4a8e7000 c1a42680 00000000 00070100 c1f6bf7c c1f6bf60 00000017 412f0d7c
bf60: 00006c05 c1a42680 c002afe4 0006e110 c1f6bfa4 c1f6bf80 c00a9108 c00a8b20
bf80: c1f6a000 00000001 00000766 00070730 00070780 00000036 00000000 c1f6bfa8
bfa0: c002ae60 c00a90d8 00000766 00070730 00000017 00006c05 412f0d7c 00000017
bfc0: 00000766 00070730 00070780 00000036 00000050 00000004 0006e110 412f0d64
bfe0: 0008af9c 412f0c98 0003fa88 401d127c 20000010 00000017 80498031 80498431
Backtrace:
[<c00b026c>] (touch_atime+0x0/0x15c) from [<c0073e98>] (generic_file_aio_read+0x
670/0x6e8)
r7:00001000 r6:0000058d r5:00000000 r4:0058dec9
[<c0073828>] (generic_file_aio_read+0x0/0x6e8) from [<c009aca4>] (do_sync_read+0
xbc/0x10c)
[<c009abe8>] (do_sync_read+0x0/0x10c) from [<bf019b98>] (KFILEDEF_Read+0x90/0xec
[dsplinkk])
[<bf019b08>] (KFILEDEF_Read+0x0/0xec [dsplinkk]) from [<bf0178f4>] (KFILE_Read+0
x54/0x70 [dsplinkk])
r5:c33c8000 r4:c318d000
[<bf0178a0>] (KFILE_Read+0x0/0x70 [dsplinkk]) from [<bf016658>] (COFF_init+0x324
/0x544 [dsplinkk])
r5:0058dec9 r4:00000000
[<bf016334>] (COFF_init+0x0/0x544 [dsplinkk]) from [<bf017670>] (COFFFILE_init+0
xa0/0xd4 [dsplinkk])
[<bf0175d0>] (COFFFILE_init+0x0/0xd4 [dsplinkk]) from [<bf01b504>] (PMGR_PROC_lo
ad+0x170/0x268 [dsplinkk])
[<bf01b394>] (PMGR_PROC_load+0x0/0x268 [dsplinkk]) from [<bf01c8e4>] (DRV_Ioctl+
0x478/0x818 [dsplinkk])
[<bf01c46c>] (DRV_Ioctl+0x0/0x818 [dsplinkk]) from [<c00a8a00>] (vfs_ioctl+0x7c/
0x98)
r7:c1a42680 r6:00006c05 r5:412f0d7c r4:c1a42680
[<c00a8984>] (vfs_ioctl+0x0/0x98) from [<c00a9068>] (do_vfs_ioctl+0x558/0x5b8)
r6:00000017 r5:c1de43b0 r4:c1a42680
[<c00a8b10>] (do_vfs_ioctl+0x0/0x5b8) from [<c00a9108>] (sys_ioctl+0x40/0x64)
[<c00a90c8>] (sys_ioctl+0x0/0x64) from [<c002ae60>] (ret_fast_syscall+0x0/0x28)
r7:00000036 r6:00070780 r5:00070730 r4:00000766
Code: e1a0c00d e92dd8f0 e24cb004 e24dd010 (e591500c)
---[ end trace 698ef5a5cb14223d ]---
网上搜了好久，还是没能解决。还请各位大神帮忙看看。谢谢！