X5 /app에 폴더만드는법좀 갈쳐주세요TT^TT

EZ-X5보드와 PI보드를 쓰고있습니다
/dev/mtdblock2가 /app와 마운트가 되어있습니다.
거기에 폴더를 만들려고 하는데 mkdir로 하면 안되는건가요?ㅎ;;
밑에 처럼 저런것만 뜨고 폴더가 안만들어 지더라고요 ㅎㅎ;
뭐라고 적혀있는건지도 모르겠습니다;;;
방법좀 갈쳐주세요 TT^TT

[root@ez-x5 /app]$ mkdir project
Unable to handle kernel NULL pointer dereference at virtual address 00000000
mm = c00111a0 pgd = c0bdc000
*pgd = a0bfc801, *pmd = a0bfc801, *pte = 00000000, *ppte = 00000000
Internal error: Oops: 0
CPU: 0
pc : [<c01673e4>]    lr : [<c0027078>]    Not tainted
sp : c0be3718  ip : 00000000  fp : c01a9ad0
r10: 00000010  r9 : 00000000  r8 : c01a9ecf
r7 : 00000000  r6 : c019520c  r5 : 60000013  r4 : c01a9ad0
r3 : c0be3770  r2 : 00000000  r1 : c01a9ed0  r0 : c01a9acf
Flags: nzCv  IRQs off  FIQs on  Mode SVC_32  Segment user
Control: 397F  Table: A0BDC000  DAC: 00000015
Process mkdir (pid: 111, stack limit = 0xc0be2368)
Stack: (0xc0be3718 to 0xc0be4000)
3700:                                                       c0be3760 00000013
3720: c0be3760 c001bf74 00000400 00000000 c01a9ad0 60000013 c019520c 00000000
3740: 00000000 00000000 00000010 000029a0 c0027078 00000000 c0397260 c039730c
3760: 00000010 00000000 c00eb1a0 00000000 c017ec60 000029a0 00000000 00000000
3780: 00034010 00000000 00000200 c0be37f8 c0be3ccc 00000000 00000000 c00ed090
37a0: c0be37c8 c0be37f8 00034000 00000000 c0397560 c00ae134 c0be37c8 c0be37f8
37c0: 00000000 00000200 00000010 000001a0 00000001 c1618000 0000000d c019a098
37e0: 0000001f c00a9164 00000000 c03b0060 c1618000 c00a95bc ffffffff ffff00ff
3800: ffffffff ffffffff c1618000 c03b0060 0000000d 00000000 c00ab0b0 c03b0060
3820: c1618000 000001bf 0000000d 00000001 c00abf1c ffffffff ffffff00 ffffffff
3840: ffffffff 000001bf c1618000 00000000 c1618000 c0be3a98 00000020 c00a9500
3860: 00000000 00000020 00000000 10001000 00000000 00000000 00000000 00000000
3880: 00000000 00000000 00000080 00000020 00000000 00000000 00000000 00100000
38a0: 00000000 00000008 00000000 00000000 00000008 00000000 00000000 00000000
38c0: 00000400 00000000 00000000 00000000 00000000 00000000 00002000 00000000
38e0: 00000000 00000000 00000800 00000000 00000040 00000000 00000000 00000000
3900: 00000000 00000000 00000000 00000020 00000000 00000200 00000010 00000002
3920: 00000000 00000000 02004000 00000000 00000000 00000000 00008000 00000000
3940: 00000000 00000000 00000000 00000000 00008000 00000000 00000000 00000200
3960: 04800040 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3980: 00000000 00000000 00000000 00000000 00000400 00000000 00000000 00000000
39a0: 00000000 c01b07ac 00000000 00000000 00000400 c0049350 c0beaf00 c0beaf60
39c0: c004947c c0216f60 00000400 c03bc120 00000400 c0216f60 00000100 000021d0
39e0: c03bc120 00000400 c03bc120 c004b640 00000100 00000400 00000100 00000400
3a00: 000021d1 c0048f1c c0be3a64 00000001 c0be3a64 c0049208 c0beaf00 c0be3a64
3a20: c007ecf4 000001d0 c16bd440 0000415c c0216c74 00000400 00000000 00000000
3a40: 00000886 00000000 c0216c74 00000400 c0216c74 c00d0268 c01b07ac 00000000
3a60: 00000000 00000400 c0049350 c0ad7320 c0ad7380 c0be3ac4 c0be3ccc c0be3a98
3a80: c1618000 00000000 ffffffff c1618000 c0be3ccc c00aba18 ffd00000 0102ffff
3aa0: 58ffffff ffffffc1 c0be3ac4 00000000 c0abc6a4 c0abc064 c099947c c00ac268
3ac0: c0be3acc ffd00000 c1580102 c019a284 00000001 00000000 00000018 00000100
3ae0: 00000000 00613000 00000000 00000000 ff03fcfc 000033cf ff03fcfc 006133cf
3b00: 00000000 00113200 00000000 c019a280 c0be3b74 c0be2000 00000898 00000000
3b20: c00ecd3c c0be3b58 c0be3bc4 c0be3b74 c019a280 00113000 00000000 c0397560
3b40: 00000200 c00ae1ac c0be3b58 c0be3bc4 c0be3b74 c019a280 00000200 c0abc258
3b60: 00000001 c0be3b90 c0be3bc4 c1618000 c00a92d4 ffd00000 0106ffff 20000013
3b80: c0196438 00000081 00000000 000001d2 c0196204 ffffffff c0196434 c0be3c6c
3ba0: c0041454 c0010de0 c0bdd000 c0010de0 c0212a1c a099f0bf c0010de0 c01ee768
3bc0: c003655c 00000003 00000000 20000013 c0196438 00000081 00000000 000001d2
3be0: c0196204 ffffffff c0196434 c0be3cbc c0041454 c0010ea0 c0bdc000 c0010ea0
3c00: c01f47d4 a09aa0bf c0010ea0 c01ee94c c003655c c0be2000 00000000 c0bdc000
3c20: c00111a0 ffffffff 00063000 c0010ea0 ffffffff c00111a0 c0be3cbc c00366a4
3c40: c0bfcd8c 20000013 c0010ea0 c0be2000 000633c8 000633c8 ffffffff c002113c
3c60: c00111bc c0be2000 c00111a0 000633c8 00000000 000633c8 c00212a8 c0be3d9c
3c80: 00000007 c0be3cf0 c01693dc 000633c8 c0be3cbc 20000013 c0be3fb0 00000002
3ca0: c0021740 ffffffff c0be3cf0 c03bd920 c0be3e44 c0a22200 c001b260 000633c8
3cc0: 00000c30 00000000 00000000 00000003 00000001 7270ffff 63656a6f 00000074
3ce0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3d00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3d20: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3d40: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3d60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3d80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3da0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3dc0: 00000000 00000000 00000000 00000000 00000000 ffff0000 000041ed 00000000
3de0: 00000000 000000d8 000000d8 000000d8 ffffffff ffffffff ffffffff ffffffff
3e00: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
3e20: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
3e40: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
3e60: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
3e80: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff 00000000 ffffffff
3ea0: ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
3ec0: ffffffff ffffffff ffffffff c0abc6a4 c0abc064 00000003 00000000 c099947c
3ee0: ffffffff 000041ed 00000000 c00aa9b4 00000000 00000000 000041ed c0999420
3f00: 00000000 c1618000 c0add9c0 00000000 c00aaa8c 00000000 00000000 00000000
3f20: 00000000 00000000 c0abc064 c019a098 c00a81c4 00000000 c00a73ac ffffffff
3f40: c0adda38 c0add9c0 000001ed c0999420 c0be2000 4013b8bc c0052ca8 c0999420
3f60: c0be3f74 c03bf000 000001ff c0999420 c0052da4 c0bf5aa0 c02323a0 c03bf000
3f80: 00000007 fda8bd01 00000010 00000000 00000001 00000002 bffffd3d 00000027
3fa0: c001b784 c001b5e0 00000001 c001b55c bffffd3d 000001ff 00000000 00000001
3fc0: 00000001 00000002 bffffd3d ffffffff bffffc64 0004313c 4013b8bc 000634e0
3fe0: 400e0730 bffffb98 00048e04 400e0734 60000010 bffffd3d ffffffef ffffff7f
Backtrace: frame pointer underflow
Backtrace aborted due to bad frame pointer <c01a9ad0>
Code: 326b0000 358d0010 e1a0c002 e58d2014 (e5dc2000)