Killing blocked processes

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Hi ,

  How to kill processes hanging in a blocked state as 
shown below :-

100 D root      3810     1  0  78   0    -   355 end  
 06:51 ?        00:00:00 df

The stack trace is as below :-

df            D C5AE9DA0   160  3810      1         
4241 31874 (NOTLB)
Call Trace: [<f89db2a4>] __rpc_execute [sunrpc] 0x204
(0xc5ae9d48)
[<f89d7596>] rpc_call_setup_Rsmp_f8ecb729 [sunrpc]
0x46 (0xc5ae9d64)
[<f89d7479>] rpc_call_sync_Rsmp_f3c0f1eb [sunrpc] 0x69
(0xc5ae9d70)
[<f89d748a>] rpc_call_sync_Rsmp_f3c0f1eb [sunrpc] 0x7a
(0xc5ae9d90)
[<f89d7680>] call_reserveresult [sunrpc] 0x0
(0xc5ae9de4)
[<f89da410>] rpc_run_timer [sunrpc] 0x0 (0xc5ae9e04)
[<f89fa019>] nfs3_proc_statfs [nfs] 0x59 (0xc5ae9e40)
[<f89eda97>] nfs_statfs [nfs] 0x37 (0xc5ae9e90)
[<c0144759>] vfs_statfs [kernel] 0x59 (0xc5ae9f2c)
[<c01447cb>] sys_statfs [kernel] 0x3b (0xc5ae9f44)
[<c01073e3>] system_call [kernel] 0x33 (0xc5ae9fc0)

   Even a kill -9 as root does not eliminate these
processes . 

   Also the stack trace shows that it is not 
in "sleep_uninterruptible" . 

   Any pointers would help .

Regards


		
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