求高手指点，致使错误.

服务器运行过程中，突然死机，后来通过机房人员配合重启后messages相关日志如下：

Feb 2 02:35:01 localhost crond(pam_unix)[18361]: session opened for user root by (uid=0)
Feb 2 02:35:02 localhost crond(pam_unix)[18361]: session closed for user root
Feb 2 02:37:56 localhost kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000005
Feb 2 02:37:56 localhost kernel: printing eip:
Feb 2 02:37:56 localhost kernel: c014c9cb
Feb 2 02:37:56 localhost kernel: *pde = 0cd6b001
Feb 2 02:37:56 localhost kernel: Oops: 0002 [#1]
Feb 2 02:37:56 localhost kernel: SMP
Feb 2 02:37:56 localhost kernel: Modules linked in: flopmon(U) acmon(U) e500e(U) autofs4 sunrpc iptable_nat iptable_mangle ipt_REJECT ipt_state ip_conntrack iptable_filter ip_tables video button battery ac joydev uhci_hcd ehci_hcd hw_random i2c_i801 i2c_core shpchp e1000 floppy dm_snapshot dm_zero dm_mirror ext3 jbd dm_mod ata_piix libata mptscsih mptbase sd_mod scsi_mod
Feb 2 02:37:56 localhost kernel: CPU: 0
Feb 2 02:37:56 localhost kernel: EIP: 0060:[] Not tainted VLI
Feb 2 02:37:56 localhost kernel: EFLAGS: 00010006 (2.6.11-1.1369_FC4smp)
Feb 2 02:37:56 localhost kernel: EIP is at free_block+0x74/0xef
Feb 2 02:37:56 localhost kernel: eax: f1bfebc0 ebx: f1bfec40 ecx: ecab5000 edx: 00000001
Feb 2 02:37:56 localhost kernel: esi: f7fffe80 edi: 00000000 ebp: 00000006 esp: c21e9f20
Feb 2 02:37:56 localhost kernel: ds: 007b es: 007b ss: 0068
Feb 2 02:37:56 localhost kernel: Process events/0 (pid: 8, threadinfo=c21e9000 task=c21e6020)
Feb 2 02:37:56 localhost kernel: Stack: f7ffa210 f7ffa210 f7ffa200 00000006 f7fffe80 c014d0e9 f7ffd118 f7fffe80
Feb 2 02:37:56 localhost kernel: f7ffff74 00000005 c014d1ca f7ffd118 f7ffff40 00000282 c2012124 f7c44000
Feb 2 02:37:56 localhost kernel: 00000000 c0130c02 00000000 00000002 00000000 f7c44010 f7c44018 f7c44028
Feb 2 02:37:56 localhost kernel: Call Trace:
Feb 2 02:37:56 localhost kernel: [] drain_array_locked+0x6e/0x9e
Feb 2 02:37:56 localhost kernel: [] cache_reap+0xb1/0x1c3
Feb 2 02:37:56 localhost kernel: [] worker_thread+0x184/0x237
Feb 2 02:37:56 localhost kernel: [] cache_reap+0x0/0x1c3
Feb 2 02:37:56 localhost kernel: [] default_wake_function+0x0/0xc
Feb 2 02:37:56 localhost kernel: [] worker_thread+0x0/0x237
Feb 2 02:37:56 localhost kernel: [] kthread+0x93/0x97
Feb 2 02:37:56 localhost kernel: [] kthread+0x0/0x97
Feb 2 02:37:56 localhost kernel: [] kernel_thread_helper+0x5/0xb
Feb 2 02:37:56 localhost kernel: Code: 00 00 00 83 c7 01 39 fd 74 7a 8b 04 24 8b 0c b8 8d 81 00 00 00 40 c1 e8 0c c1 e0 05 8b 15 10 b8 47 c0 8b 5c 10 1c 8b 13 8b 43 04 <89> 42 04 89 10 c7 03 00 01 10 00 c7 43 04 00 02 20 00 2b 4b 0c
Feb 2 02:37:56 localhost kernel: <0>Fatal exception: panic in 5 seconds
Feb 3 17:32:01 localhost syslogd 1.4.1: restart.