System crashed with RIP cfq_put_request+0x26/0xda.

Issue

• System crashed with following panic message

    Unable to handle kernel paging request at 0000000000100138 RIP:
     [<ffffffff80149d65>] cfq_put_request+0x26/0xda
    PGD efeb93067 PUD f01f12067 PMD 0
    Oops: 0000 [1] SMP
    last sysfs file: /block/ram0/dev
    CPU 8
...
    Pid: 13071, comm: oracle Tainted: P      2.6.18-164.el5 #1
    RIP: 0010:[<ffffffff80149d65>]  [<ffffffff80149d65>] cfq_put_request+0x26/0xda
...
    Process oracle (pid: 13071, threadinfo ffff813f7b6e6000, task ffff81402b0b97e0)
...
    Call Trace:
     <IRQ>  [<ffffffff80141997>] __blk_put_request+0x69/0x94
     [<ffffffff8807a05e>] :scsi_mod:scsi_end_request+0xa7/0xcd
     [<ffffffff8807a1d2>] :scsi_mod:scsi_io_completion+0x14e/0x324
     [<ffffffff8008a29b>] __wake_up_common+0x3e/0x68
     [<ffffffff880a7802>] :sd_mod:sd_rw_intr+0x252/0x28c
     [<ffffffff8807a467>] :scsi_mod:scsi_device_unbusy+0x67/0x81
     [<ffffffff80037cfb>] blk_done_softirq+0x5f/0x6d
     [<ffffffff8001235a>] __do_softirq+0x89/0x133
     [<ffffffff8005e2fc>] call_softirq+0x1c/0x28
     [<ffffffff8006cb14>] do_softirq+0x2c/0x85
     [<ffffffff8006c99c>] do_IRQ+0xec/0xf5
     [<ffffffff8005d615>] ret_from_intr+0x0/0xa
     <EOI>

    Code: 4c 8b 6d 38 83 e0 01 48 63 d0 41 8b 44 95 50 85 c0 75 0a 0f
    RIP  [<ffffffff80149d65>] cfq_put_request+0x26/0xda
     RSP <ffff810139dbbde0>