시스템이 지속적으로 hang이 걸려요.

안녕하세요~

서버가 하루에 한번정도 hang이 걸려요.

ping은 되는데 telnet접속하면

로그인 메세지만 뜨구 다음 진행이 되질 않네요

<증상>

[root@web2 /bin]# telnet xxx.xxx.xxx.xxx

Trying xxx.xxx.xxx.xxx...

Connected to xxx.xxx.xxx.xxx

Escape character is '^]'.

그리고 messages 파일을 보니까 이상한 로그가 있던데...

고수님들 log 좀 보시고 왜 그런지 알려주세요

부탁드립니다.

<messages log>

Mar 12 17:21:05 ASRU2 kernel: Page has mapping still set. This is a serious situation. However if you
Mar 12 17:21:05 ASRU2 kernel: are using the NVidia binary only module please report this bug to
Mar 12 17:21:05 ASRU2 kernel: NVidia and not to the linux kernel mailinglist.
Mar 12 17:21:05 ASRU2 kernel: ------------[ cut here ]------------
Mar 12 17:21:05 ASRU2 kernel: kernel BUG at page_alloc.c:122!
Mar 12 17:21:05 ASRU2 kernel: invalid operand: 0000
Mar 12 17:21:05 ASRU2 kernel: parport_pc lp parport autofs nfs lockd sunrpc e100 ipt_REJECT iptable_filter ip_tables st keybdev mousedev hid input usb-ohci usbcore ext3 jbd aic7xxx sd_mod
Mar 12 17:21:05 ASRU2 kernel: CPU:    1
Mar 12 17:21:05 ASRU2 kernel: EIP:    0060:[<c0148bf7>]    Not tainted
Mar 12 17:21:05 ASRU2 kernel: EFLAGS: 00010286
Mar 12 17:21:05 ASRU2 kernel:
Mar 12 17:21:05 ASRU2 kernel: EIP is at __free_pages_ok [kernel] 0x357 (2.4.20-8smp)
Mar 12 17:21:05 ASRU2 kernel: eax: 00000033   ebx: c1dd3128   ecx: 00000001   edx: f76cc000
Mar 12 17:21:05 ASRU2 kernel: esi: f77f25b4   edi: 00000000   ebp: 00000000   esp: ebf0be0c
Mar 12 17:21:05 ASRU2 kernel: ds: 0068   es: 0068   ss: 0068
Mar 12 17:21:05 ASRU2 kernel: Process ping (pid: 18520, stackpage=ebf0b000)
Mar 12 17:21:05 ASRU2 kernel: Stack: c0283ac0 00000002 bfc02000 ffffffff c0340880 c1c40030 c0341a50 f77f25b4
Mar 12 17:21:05 ASRU2 kernel:        00000003 c0000000 c1dd3128 00000003 c0000000 00000003 c013692c c1dd3128
Mar 12 17:21:05 ASRU2 kernel:        00000002 c01371a5 edab6680 ebf0cbfc bfc00000 00003000 c03fd000 ebf0a000
Mar 12 17:21:05 ASRU2 kernel: Call Trace:   [<c013692c>] __free_pte [kernel] 0x4c (0xebf0be44))
Mar 12 17:21:05 ASRU2 kernel: [<c01371a5>] zap_page_range [kernel] 0x1a5 (0xebf0be50))
Mar 12 17:21:05 ASRU2 kernel: [<c013ad90>] exit_mmap [kernel] 0xd0 (0xebf0be94))
Mar 12 17:21:05 ASRU2 kernel: [<c0120692>] mmput [kernel] 0x62 (0xebf0beb8))
Mar 12 17:21:05 ASRU2 kernel: [<c0126996>] do_exit [kernel] 0x136 (0xebf0bec8))
Mar 12 17:21:05 ASRU2 kernel: [<c0126d1b>] do_group_exit [kernel] 0x8b (0xebf0bee4))
Mar 12 17:21:05 ASRU2 kernel: [<c012fabe>] get_signal_to_deliver [kernel] 0x1de (0xebf0bef8))
Mar 12 17:21:05 ASRU2 kernel: [<c0109634>] do_signal [kernel] 0x64 (0xebf0bf20))
Mar 12 17:21:05 ASRU2 kernel: [<c013a621>] unmap_fixup [kernel] 0x181 (0xebf0bf50))
Mar 12 17:21:05 ASRU2 kernel: [<c013a996>] do_munmap [kernel] 0x2a6 (0xebf0bf60))
Mar 12 17:21:05 ASRU2 kernel: [<c011c200>] do_page_fault [kernel] 0x0 (0xebf0bfb0))
Mar 12 17:21:05 ASRU2 kernel: [<c011c200>] do_page_fault [kernel] 0x0 (0xebf0bfbc))
Mar 12 17:21:05 ASRU2 kernel: [<c0109908>] signal_return [kernel] 0x14 (0xebf0bfc0))
Mar 12 17:21:05 ASRU2 kernel:
Mar 12 17:21:05 ASRU2 kernel:
Mar 12 17:21:05 ASRU2 kernel: Code: 0f 0b 7a 00 ad 32 28 c0 e9 f5 fc ff ff 0f 0b 69 00 ad 32 28
Mar 12 17:21:07 ASRU2 kernel:  <3>e100: eth1 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:10:27 ASRU2 kernel: e100: eth0 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:10:30 ASRU2 kernel: e100: eth1 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:21:13 ASRU2 kernel: e100: eth0 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:21:17 ASRU2 kernel: e100: eth1 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:21:19 ASRU2 kernel: e100: eth0 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:21:34 ASRU2 kernel: e100: eth1 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:21:40 ASRU2 kernel: e100: eth1 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:21:46 ASRU2 kernel: e100: eth0 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:21:56 ASRU2 kernel: e100: eth1 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:22:12 ASRU2 kernel: e100: eth1 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:23:13 ASRU2 kernel: e100: eth0 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:23:21 ASRU2 kernel: e100: eth1 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:23:21 ASRU2 kernel: swap_free: Unused swap offset entry 03000000
Mar 12 18:23:21 ASRU2 last message repeated 5 times
Mar 12 18:23:23 ASRU2 kernel: e100: eth0 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:23:23 ASRU2 kernel: VM: killing process sh
Mar 12 18:23:23 ASRU2 kernel: swap_free: Unused swap offset entry 03000000
Mar 12 18:23:33 ASRU2 kernel: e100: eth1 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:23:37 ASRU2 kernel: e100: eth0 NIC Link is Up 100 Mbps Full duplex
Mar 12 18:23:42 ASRU2 kernel: VM: killing process ps
Mar 12 18:23:42 ASRU2 kernel: swap_free: Unused swap offset entry 03000000
Mar 12 18:23:42 ASRU2 last message repeated 4 times
Mar 12 18:23:46 ASRU2 kernel: Unable to handle kernel NULL pointer dereference at virtual address 0000007c