Unable to handle kernel NULL pointer dereference at virtual address
00000014

print eip:
*pde=00000000
Oops: 0000 [#1]
PREEMPT
CPU : 0
EIP : 0060 " [<c0197ad8>] Not tainted VLI
EFLAGS : 00010202
EIP is at journal_dirty_metadata+0x38/0x210
eax : c7aac000 ebx : 00000000 ecx : 00000000 edx : cb4c0e20
esi : cadfd180 edi : cbd37bc0 ebp : cb070220 esp : c7aade78
ds : 007b es : 007b ss : 0068

Process X (pid: 1322, threadinfo = c7aac000 task = c7b34d60 )

Stack: 
cbd4c660 c7abd148 c0152c6b c015127f cb4c0e20 cb4c0e20 cb070220 00000001
c7abd148 c01896c7 cb070220 cb4c0e20 00001000 c7aadebc 00000001 00000001
00000000 00000030 00000001 00000001 000006c6 00075081 cbd4a3a0 00004000

Call Trace:
[<c0152c6b>] __getblk+0x2b/0x60
[<c015127f>] wake_up_buffer+0xf/0x30
[<c01896c7>] ext3_getblk+0x107/0x2a0
[<c0189893>] ext3_bread+0x33/0xc0
[<c018f707>] ext3_mkdir+0x107/0x2e0
[<c018f600>] ext3_mkdir+0x0/0x2e0
[<c01601aa>] vfs_mkdir+0x6a/0xc0
[<c01602c6>] sys_mkdir+0xc6/0x100
[<c01292bc>] sys_newuname+0x86/0x90
[<c0109359>] sysenter_past_esp+0x52/0x71

Code: 24 2c 8b 75 00 8b 5a 24 f6 45 18 04 8b 3e 0f 84 df 01 00 00 b8 01 00 00 00
85 c0 0f 85 d1 00 00 00 b8 00 e0 ff ff 21 e0 ff 40 14 <8b> 43 14 3b 45 00 0f 84
6c 01 00 b8 00 e0 ff ff 21 e0 ff 40

<6>note: x[1322] exited with preempt_count 1
giving up