System crashed with Instruction Pointer at _spin_lock_irq+0x1/0xb.

Issue

• System crashed with following panic message:

general protection fault: 0000 [1] SMP 
last sysfs file: /devices/pci0000:00/0000:00:07.0/0000:0b:00.0/0000:0c:00.0/0000:0d:00.0/0000:0e:04.0/0000:13:00.0/host9/rport-9:0-32/target9:0:5/9:0:5:39/timeout
CPU 0 
..
Pid: 21843, comm: emcomkd Tainted: P   M  2.6.18-238.9.1.el5 #1
RIP: 0010:[<ffffffff80064ad6>]  [<ffffffff80064ad6>] _spin_lock_irq+0x1/0xb
..
Process emcomkd (pid: 21843, threadinfo ffff81071a14c000, task ffff81059d6d2820)
..
Call Trace:
 [<ffffffff80064604>] __down_read+0x12/0x92
 [<ffffffff885a3cdc>] :emcom:dru_lhash_lookup+0x17b/0x188
 [<ffffffff88100845>] :dm_mod:dm_request+0x41/0x124
 [<ffffffff88100804>] :dm_mod:dm_request+0x0/0x124
 [<ffffffff885a5e9b>] :emcom:dru_ld_strat_OS+0x27c/0x2ff
 [<ffffffff885aadf1>] :emcom:dru_mvr_copy_bhvr+0xc2c/0x150f
 [<ffffffff885ab7e7>] :emcom:dru_mvr_task_dispatch+0x113/0x621
 [<ffffffff885abd48>] :emcom:dru_mvr_thrd_task+0x53/0x160
 [<ffffffff885a16d1>] :emcom:dru_thread_idle+0x3cb/0x591
 [<ffffffff8008e437>] default_wake_function+0x0/0xe
 [<ffffffff8005dfb1>] child_rip+0xa/0x11
 [<ffffffff88590835>] :emcom:dru_daemon+0x0/0xb8
 [<ffffffff8005dfa7>] child_rip+0x0/0x11