Crash on heavy load

系统重启在17：08
May  2 12:25:05 local_masterdb kernel: BUG: warning at kernel/cpu.c:56/unlock_cpu_hotplug() (Not tainted)
May  2 12:25:05 local_masterdb kernel:  [] dump_trace+0x69/0x1af
May  2 12:25:05 local_masterdb kernel:  [] show_trace_log_lvl+0x18/0x2c
May  2 12:25:05 local_masterdb kernel:  [] show_trace+0xf/0x11
May  2 12:25:05 local_masterdb kernel:  [] dump_stack+0x15/0x17
May  2 12:25:05 local_masterdb kernel:  [] unlock_cpu_hotplug+0x46/0x6f
May  2 12:25:05 local_masterdb kernel:  [] do_dbs_timer+0x127/0x16b [cpufreq_ondemand]
May  2 12:25:05 local_masterdb kernel:  [] run_workqueue+0x83/0xc5
May  2 12:25:05 local_masterdb kernel:  [] worker_thread+0xd9/0x10c
May  2 12:25:05 local_masterdb kernel:  [] kthread+0xc0/0xec
May  2 12:25:05 local_masterdb kernel:  [] kernel_thread_helper+0x7/0x10
May  2 12:25:05 local_masterdb kernel: DWARF2 unwinder stuck at kernel_thread_helper+0x7/0x10
May  2 12:25:05 local_masterdb kernel: Leftover inexact backtrace:
May  2 12:25:06 local_masterdb kernel:  =======================
May  2 16:17:44 local_masterdb smartd[2653]: Device: /dev/sdb, Temperature changed 2 Celsius to 30 Celsius since last report
May  2 17:08:08 local_masterdb syslogd 1.4.1: restart.
May  2 17:08:09 local_masterdb kernel: klogd 1.4.1, log source = /proc/kmsg started.
May  2 17:08:09 local_masterdb kernel: Linux version 2.6.18-1.2747.el5 ([e-mail]) (gcc version
4.1.1 20061011 (Red Hat 4.1.1-30)) #1 SMP Thu Nov 9 18:55:30 EST 2006
May  2 17:08:09 local_masterdb kernel: BIOS-provided physical RAM map:
系统check disk /dev/hdc, 重启在17：10
May  2 17:08:54 local_masterdb kernel: EXT3 FS on dm-1, internal journal
May  2 17:09:00 local_masterdb kernel: EXT3-fs: recovery complete.
May  2 17:09:05 local_masterdb kernel: EXT3-fs: mounted filesystem with ordered data mode.
May  2 17:09:09 local_masterdb kernel: SELinux: initialized (dev dm-1, type ext3), uses xattr
May  2 17:09:16 local_masterdb kernel: SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs
May  2 17:09:22 local_masterdb kernel: kjournald starting.  Commit interval 5 seconds
May  2 17:09:26 local_masterdb kernel: EXT3-fs warning: checktime reached, running e2fsck is recommended
May  2 17:09:30 local_masterdb kernel: EXT3 FS on sdc1, internal journal
May  2 17:09:33 local_masterdb kernel: EXT3-fs: recovery complete.
May  2 17:09:38 local_masterdb kernel: EXT3-fs: mounted filesystem with ordered data mode.
May  2 17:09:48 local_masterdb kernel: SELinux: initialized (dev sdc1, type ext3), uses xattr
May  2 17:09:52 local_masterdb kernel: Adding 2031608k swap on /dev/VolGroup00/LogVol01.  Priority:-1 extents:1 across:2031608
k
May  2 17:09:59 local_masterdb kernel: SELinux: initialized (dev binfmt_misc, type binfmt_misc), uses genfs_contexts
May  2 17:10:04 local_masterdb kernel: IA-32 Microcode Update Driver: v1.14a
May  2 17:10:05 local_masterdb kernel: ip_tables: (C) 2000-2006 Netfilter Core Team
May  2 17:10:05 local_masterdb kernel: Netfilter messages via NETLINK v0.30.
May  2 17:10:05 local_masterdb kernel: ip_conntrack version 2.4 (1152 buckets, 9216 max) - 228 bytes per conntrack
May  2 17:10:05 local_masterdb kernel: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
May  2 17:10:05 local_masterdb kernel: audit(1209719288.291:3): audit_pid=2585 old=0 by auid=4294967295 subj=system_u:system_r
:auditd_t:s0
May  2 17:10:05 local_masterdb kernel: SELinux: initialized (dev rpc_pipefs, type rpc_pipefs), uses genfs_contexts
May  2 17:10:05 local_masterdb kdump: saved a vmcore to /var/crash/2008-05-02-17:08
May  2 17:10:06 local_masterdb shutdown[2714]: shutting down for system reboot
May  2 17:10:06 local_masterdb init: Switching to runlevel: 6
May  2 17:10:08 local_masterdb rpc.statd[2668]: Caught signal 15, un-registering and exiting.
May  2 17:10:09 local_masterdb auditd[2585]: The audit daemon is exiting.
May  2 17:10:09 local_masterdb kernel: audit(1209719409.757:6): audit_pid=0 old=2585 by auid=4294967295 subj=system_u:system_r
:auditd_t:s0
May  2 17:10:10 local_masterdb kernel: Kernel logging (proc) stopped.
May  2 17:10:10 local_masterdb kernel: Kernel log daemon terminating.
May  2 17:10:11 local_masterdb exiting on signal 15
May  2 17:13:18 local_masterdb syslogd 1.4.1: restart.

后来持续出现以下：
May  3 11:44:34 local_masterdb kernel: BUG: warning at kernel/cpu.c:56/unlock_cpu_hotplug() (Not tainted)
May  3 11:44:34 local_masterdb kernel:  [] dump_trace+0x69/0x1af
May  3 11:44:34 local_masterdb kernel:  [] show_trace_log_lvl+0x18/0x2c
May  3 11:44:34 local_masterdb kernel:  [] show_trace+0xf/0x11
May  3 11:44:34 local_masterdb kernel:  [] dump_stack+0x15/0x17
May  3 11:44:34 local_masterdb kernel:  [] unlock_cpu_hotplug+0x46/0x6f
May  3 11:44:34 local_masterdb kernel:  [] do_dbs_timer+0x127/0x16b [cpufreq_ondemand]
May  3 11:44:34 local_masterdb kernel:  [] run_workqueue+0x83/0xc5
May  3 11:44:34 local_masterdb kernel:  [] worker_thread+0xd9/0x10c
May  3 11:44:34 local_masterdb kernel:  [] kthread+0xc0/0xec
May  3 11:44:34 local_masterdb kernel:  [] kernel_thread_helper+0x7/0x10
May  3 11:44:34 local_masterdb kernel: DWARF2 unwinder stuck at kernel_thread_helper+0x7/0x10
May  3 11:44:34 local_masterdb kernel: Leftover inexact backtrace:
May  3 11:44:34 local_masterdb kernel:  =======================

有一个类似情况：