Command 'reboot -f' causes kernel panic

Issue

Command reboot -f fails with kernels 2.6.18-348.X.1.el5 on md.c:5111

# reboot -f
----------- [cut here ] --------- [please bite here ] ---------
Kernel BUG at drivers/md/md.c:5111
invalid opcode: 0000 [1] SMP
last sysfs file: /block/md0/md/metadata_version
CPU 0
Modules linked in: quicksec(PFU) ipsecalloc(PU) be2iscsi ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp bnx2i cnic uio cxgb3i libcxgbi cxgb3 8021q libiscsi_tcp libiscsi2 scsi_transport_iscsi2 scsi_transport_iscsi dm_round_robin dm_multipath scsi_dh mptscsih mptbase video sbs power_meter i2c_ec dell_wmi button battery asus_acpi acpi_memhotplug ac sr_mod cdrom sg shpchp i7core_edac tpm_tis usb_storage ata_piix edac_mc tpm hpilo libata pcspkr tpm_bios serio_raw backlight hwmon i2c_core wmi ext3 jbd raid1 cciss sd_mod scsi_mod dm_mod sch_sfq sch_htb ipv6 xfrm_nalgo crypto_api LinkMonitor(PU) tg3 bnx2 e1000 ipmi_watchdog_flexi(U) ipmi_devintf ipmi_si ipmi_msghandler ehci_hcd ohci_hcd uhci_hcd
Pid: 13354, comm: kjournald Tainted: PF    --------------------    2.6.18-348.3.1.el5 #1
RIP: 0010:[<ffffffff80223d07>]  [<ffffffff80223d07>] md_write_start+0x1d/0x108
RSP: 0018:ffff810316773c30  EFLAGS: 00010246
RAX: 0000000000000001 RBX: ffff81031b027000 RCX: 0000000000002080
RDX: 0000000000000000 RSI: ffff81019df32340 RDI: ffff81031b027000
RBP: ffff81019df32340 R08: 0000000000000001 R09: ffff81017d9c07e0
R10: ffff81019fe66600 R11: 0000000000000060 R12: 00000000000000ff
R13: ffff81031bc47340 R14: ffff8101685ef04c R15: ffff81019df32340
FS:  0000000000000000(0000) GS:ffffffff80435000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 00002b9af1403000 CR3: 000000031bb0e000 CR4: 00000000000006a0
Process kjournald (pid: 13354, threadinfo ffff810316772000, task ffff81017d9c07e0)
Stack:  0000012b0000000c ffffffff800dfdd1 0000000000000046 0000000000000220
 ffff81031ffea4c0 0000000000000001 0000000000000001 ffff81019df32340
 00000000000000ff ffffffff8822d02c ffff81017ef0c9c0 ffff81031b027000
Call Trace:
 [<ffffffff800dfdd1>] __cache_alloc_node+0xa1/0xd6
 [<ffffffff8822d02c>] :raid1:make_request+0x38/0x5d8
 [<ffffffff8001c83c>] generic_make_request+0x211/0x228
 [<ffffffff800238a2>] mempool_alloc+0x31/0xe7
 [<ffffffff80033698>] submit_bio+0xe6/0xed
 [<ffffffff8001b009>] submit_bh+0xf4/0x114
 [<ffffffff8823de17>] :jbd:journal_commit_transaction+0x91d/0x10c6
 [<ffffffff8003ddc0>] lock_timer_base+0x1b/0x3c
 [<ffffffff882416b3>] :jbd:kjournald+0xc1/0x213
 [<ffffffff800a3c28>] autoremove_wake_function+0x0/0x2e
 [<ffffffff882415f2>] :jbd:kjournald+0x0/0x213
 [<ffffffff800a3a10>] keventd_create_kthread+0x0/0xc4
 [<ffffffff80032c29>] kthread+0xfe/0x132
 [<ffffffff8005dfc1>] child_rip+0xa/0x11
 [<ffffffff800a3a10>] keventd_create_kthread+0x0/0xc4
 [<ffffffff80032b2b>] kthread+0x0/0x132
 [<ffffffff8005dfb7>] child_rip+0x0/0x11


Code: 0f 0b 68 2b 74 2e 80 c2 f7 13 eb fe 83 f8 02 75 1c c7 47 2c
RIP  [<ffffffff80223d07>] md_write_start+0x1d/0x108
 RSP <ffff810316773c30>
 <0>Kernel panic - not syncing: Fatal exception