framebuff ko The framebuffer device was opened successfully etrackfb t

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/ # ./framebuff.ko
The framebuffer device was opened successfully.
etrackfb
type:0x0
visual:1
line_length:75
sm------------[ cut here ]------------
WARNING: at fs/buffer.c:711 __set_page_dirty+0xbc/0x198()
Modules linked in: etrackfb_new sony_prs_505
[<c0021198>] (dump_stack+0x0/0x14) from [<c0039080>] (warn_on_slowpath+0x4c/0x84)
[<c0039034>] (warn_on_slowpath+0x0/0x84) from [<c00a62f4>] (__set_page_dirty+0xbc/0x198)
r6:c38114b0 r5:c0310a80 r4:c0269ad8
[<c00a6238>] (__set_page_dirty+0x0/0x198) from [<c00a65f8>] (__set_page_dirty_buffers+0xb4/0xc4)
r6:c3d13738 r5:00000001 r4:c0310a80
[<c00a6544>] (__set_page_dirty_buffers+0x0/0xc4) from [<c00660d8>] (set_page_dirty+0x4c/0xd0)
[<c006608c>] (set_page_dirty+0x0/0xd0) from [<c0066ba4>] (set_page_dirty_balance+0x18/0x5c)
r5:00000001 r4:c0310a80
[<c0066b8c>] (set_page_dirty_balance+0x0/0x5c) from [<c006d684>] (__do_fault+0x37c/0x3a4)
r5:c0310a80 r4:0bd540ff
[<c006d308>] (__do_fault+0x0/0x3a4) from [<c006eb64>] (handle_mm_fault+0x2bc/0x5f0)
[<c006e8a8>] (handle_mm_fault+0x0/0x5f0) from [<c0022dc0>] (do_page_fault+0xe8/0x224)
[<c0022cd8>] (do_page_fault+0x0/0x224) from [<c001d1dc>] (do_DataAbort+0x3c/0xa0)
[<c001d1a0>] (do_DataAbort+0x0/0xa0) from [<c001d9c0>] (ret_from_exception+0x0/0x10)
Exception stack(0xc3dc1fb0 to 0xc3dc1ff8)
1fa0: 40135000 00000000 000752f8 40135000
1fc0: be974ed4 00008740 0000874c 00000001 000084f0 00000000 4012f000 be974ea8
1fe0: 40089810 be974d6c 000086e0 40089838 20000010 ffffffff
r8:000084f0 r7:00000001 r6:0000874c r5:00008740 r4:ffffffff
---[ end trace 4b8690019547d6e5 ]---
em_start:0xbe00000,smem_len:4800kernel BUG at lib/radix-tree.c:474!
Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = c3d34000
[00000000] *pgd=0bd4e031, *pte=00000000, *ppte=00000000
Internal error: Oops: 817 [#1]
Modules linked in: etrackfb_new sony_prs_505
CPU: 0 Tainted: G W (2.6.26-rc9-00056-g99b0915 #1)
PC is at __bug+0x20/0x2c
LR is at log_wait+0x0/0x8
pc : [<c002118c>] lr : [<c024f1f8>] psr: 60000093
sp : c3dc1d9c ip : c024f1f8 fp : c3dc1da8
r10: 00000001 r9 : 00000000 r8 : 40136000
r7 : 00000000 r6 : c38114b4 r5 : 00000000 r4 : 00000000
r3 : 00000000 r2 : 00000001 r1 : 00000001 r0 : 00000027
Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user
Control: c000717f Table: 0bd34000 DAC: 00000015
Process framebuff.ko (pid: 215, stack limit = 0xc3dc0260)
Stack: (0xc3dc1d9c to 0xc3dc2000)
1d80: c3dc1dd8
1da0: c3dc1dac c01069d4 c002117c 40136440 00000000 c0310a60 c38114b0 00000000
1dc0: 40136000 c3edc780 00000000 c3dc1df4 c3dc1ddc c00a639c c010692c c0310a60
1de0: 00000001 c3d13738 c3dc1e04 c3dc1df8 c00a65f8 c00a6248 c3dc1e1c c3dc1e08
1e00: c00660d8 c00a6554 c0310a60 00000001 c3dc1e34 c3dc1e20 c0066ba4 c006609c
1e20: 0bd530ff c0310a60 c3dc1e7c c3dc1e38 c006d684 c0066b9c c3d35000 00000001
1e40: 00000001 00000001 00000001 40136000 c0310a60 c3d34000 00000000 c3d28900
1e60: c3d13738 40136000 00000800 00001000 c3dc1ecc c3dc1e80 c006eb64 c006d318
1e80: 00000001 00000001 00000000 c0025cd4 c3edc780 c0251188 000004d8 c3d35000
1ea0: c3dc1ebc ffffffff c3d13738 c3d28900 c3edc7b8 c3edc780 c3dc1fb0 40136000
1ec0: c3dc1f04 c3dc1ed0 c0022dc0 c006e8b8 c01485e4 c01464f4 00000817 ffffffff
1ee0: c024e630 00000817 c3dc1fb0 40136000 00000000 4012f000 c3dc1fac c3dc1f08
1f00: c001d1dc c0022ce8 00000083 000084f0 00000083 4012f000 c3dc1f44 c0252b58
1f20: 00000083 c3c12dc0 00000000 000084f0 c3dc0000 4012f000 c3dc1f60 c3dc1f48
1f40: c005dd58 c005ce8c 00000000 c0252b58 00000084 c3dc1f7c c3dc1f64 c0025cd4
1f60: c005dc48 c0251188 0000000d c0272564 c3dc1f8c c3dc1f80 c0025d58 c0025ca4
1f80: c3dc1fac c3dc1f90 c001d048 ffffffff 00008740 0000874c 00000001 000084f0
1fa0: 00000000 c3dc1fb0 c001d9c0 c001d1b0 40135000 00000000 000742f8 40136000
1fc0: be974ed4 00008740 0000874c 00000001 000084f0 00000000 4012f000 be974ea8
1fe0: 40089810 be974d6c 000086e0 40089838 20000010 ffffffff ffffffff ffffffff
Backtrace:
[<c002116c>] (__bug+0x0/0x2c) from [<c01069d4>] (radix_tree_tag_set+0xb8/0xfc)
[<c010691c>] (radix_tree_tag_set+0x0/0xfc) from [<c00a639c>] (__set_page_dirty+0x164/0x198)
[<c00a6238>] (__set_page_dirty+0x0/0x198) from [<c00a65f8>] (__set_page_dirty_buffers+0xb4/0xc4)
r6:c3d13738 r5:00000001 r4:c0310a60
[<c00a6544>] (__set_page_dirty_buffers+0x0/0xc4) from [<c00660d8>] (set_page_dirty+0x4c/0xd0)
[<c006608c>] (set_page_dirty+0x0/0xd0) from [<c0066ba4>] (set_page_dirty_balance+0x18/0x5c)
r5:00000001 r4:c0310a60
[<c0066b8c>] (set_page_dirty_balance+0x0/0x5c) from [<c006d684>] (__do_fault+0x37c/0x3a4)
r5:c0310a60 r4:0bd530ff
[<c006d308>] (__do_fault+0x0/0x3a4) from [<c006eb64>] (handle_mm_fault+0x2bc/0x5f0)
[<c006e8a8>] (handle_mm_fault+0x0/0x5f0) from [<c0022dc0>] (do_page_fault+0xe8/0x224)
[<c0022cd8>] (do_page_fault+0x0/0x224) from [<c001d1dc>] (do_DataAbort+0x3c/0xa0)
[<c001d1a0>] (do_DataAbort+0x0/0xa0) from [<c001d9c0>] (ret_from_exception+0x0/0x10)
Exception stack(0xc3dc1fb0 to 0xc3dc1ff8)
1fa0: 40135000 00000000 000742f8 40136000
1fc0: be974ed4 00008740 0000874c 00000001 000084f0 00000000 4012f000 be974ea8
1fe0: 40089810 be974d6c 000086e0 40089838 20000010 ffffffff
r8:000084f0 r7:00000001 r6:0000874c r5:00008740 r4:ffffffff
Code: e1a01000 e59f000c eb006243 e3a03000 (e5833000)
00
mmio_start:0x0 ,mmio_len:0
---[ end trace 4b8690019547d6e5 ]---
600x800, 1bpp
screensize:480000
The framebuffer device was mapped to memory successfully.
Segmentation fault