printk unexpected LF is inserted in message

Issue

• printk unexpected LF is inserted in message. The results of printk() are different between RHEL6 and RHEL7 as follows.

< RHEL7 >
# uname -r
3.10.0-123.el7.x86_64
# dmesg
...skip...
[  164.938026] sd 2:0:0:0: [sdb]  
[  164.938027] Add. Sense: Unrecovered read error
[  164.938028] sd 2:0:0:0: [sdb] CDB: 
[  164.938030] Read(10): 28 00 00 00 12 30 00 00 08 00
[  165.021177] sd 2:0:0:0: [sdb] Unhandled sense code
[  165.021180] sd 2:0:0:0: [sdb]  
[  165.021181] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[  165.021182] sd 2:0:0:0: [sdb]  
[  165.021185] Sense Key : Medium Error [current] 
[  165.021187] Info fld=0x1234
...skip...

< RHEL6 >
# uname -r
2.6.32-431.el6.x86_64
# dmesg
...skip...
[  911.566475] sd 2:0:0:0: [sdb] Add. Sense: Unrecovered read error
[  911.567484] sd 2:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 11 e0 00 01 00 00
[  911.570034] sd 2:0:0:0: [sdb] Unhandled sense code
[  911.570756] sd 2:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[  911.571658] sd 2:0:0:0: [sdb] Sense Key : Medium Error [current] 
[  911.572616] Info fld=0x1234
...skip...