CentOS - Sep 2013 - Crashing Server [_spin_unlock_irqrestore+0x17/0x20]

I have a CentOS server that after the latest round of updates has begun
crashing [dump, reboot]

2.6.32-358.18.1.el6.centos.plus.x86_64

The dmesg dump in /var/crash looks like the following;  does anyone
recognize that?

<6>RPC: Registered udp transport module.
<6>RPC: Registered tcp transport module.
<6>RPC: Registered tcp NFSv4.1 backchannel transport module.
<6>Bluetooth: Core ver 2.15
<6>NET: Registered protocol family 31
<6>Bluetooth: HCI device and connection manager initialized
<6>Bluetooth: HCI socket layer initialized
<6>device eth0 entered promiscuous mode
<7>eth0: no IPv6 routers present
<4>int3: 0000 [#1] SMP
<4>last sysfs
file: /sys/devices/pci0000:00/0000:00:1e.0/0000:06:03.0/local_cpus
<4>CPU 0
<4>Modules linked in: bluetooth rfkill autofs4 sunrpc cpufreq_ondemand
acpi_cpufreq freq_table mperf ipt_REJECT nf_conntrack_ipv4
nf_defrag_ipv4 iptable_filter ip_tables nf_conntrack_ftp
nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter
ip6_tables ipv6 microcode serio_raw i2c_i801 i2c_core sg iTCO_wdt
iTCO_vendor_support e1000e usb_storage ext4 jbd2 mbcache raid1 sr_mod
cdrom sd_mod crc_t10dif ahci dm_mirror dm_region_hash dm_log dm_mod
[last unloaded: scsi_wait_scan]
<4>
<4>Pid: 1626, comm: irqbalance Not tainted
2.6.32-358.18.1.el6.centos.plus.x86_64 #1 Supermicro
X9SCI/X9SCA/X9SCI/X9SCA
<4>RIP: 0010:[<ffffffff81c280e7>]  [<ffffffff81c280e7>]
early_idt_handlers+0xe7/0x140
<4>RSP: 0018:ffff88023ad3fda8  EFLAGS: 00000046
<4>RAX: 0000000000000000 RBX: ffff88023c7f95c0 RCX: 000000005815e3ad
<4>RDX: ffff88023c7f962c RSI: 0000000000000246 RDI: 0000000000000246
<4>RBP: ffff88023ad3fdd8 R08: ffff88023cdbb000 R09: 0000000000000000
<4>R10: 0000000000000200 R11: 0000000000000000 R12: ffff88023c7f962c
<4>R13: ffff880237e87000 R14: 0000000000000001 R15: 0000000000000246
<4>FS:  00007fc3c2c54720(0000) GS:ffff880028200000(0000)
knlGS:0000000000000000
<4>CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>CR2: 00007fc3c2c63000 CR3: 0000000238a4e000 CR4: 00000000000407f0
<4>DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<4>DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
<4>Process irqbalance (pid: 1626, threadinfo ffff88023ad3e000, task
ffff880237678ae0)
<4>Stack:
<4> ffffffff81517e27 0000000000000010 0000000000000246 ffff88023ad3fdd8
<4><d> 0000000000000018 0000000000000246 ffff88023ad3fe28
ffffffff810e33ae
<4><d> 0000000000000000 0000002200000008 0000000000000022
0000000000000008
<4>Call Trace:
<4> [<ffffffff81517e27>] ? 

-- 
Adam Tauno Williams <http://www.whitemiceconsulting.com>
System Administrator, OpenGroupware Developer, LPI / CNA
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