로그 분석 부탁드립니다.(급)

Nov 22 02:22:59 smf kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000078
Nov 22 02:22:59 smf kernel:  printing eip:
Nov 22 02:22:59 smf kernel: c0143076
Nov 22 02:22:59 smf kernel: *pde = 00000000
Nov 22 02:22:59 smf kernel: Oops: 0000
Nov 22 02:22:59 smf kernel: e1000 e100 bridge ipt_REDIRECT iptable_nat ip_conntrack iptable_filter ip_tables ide-cd cdrom usb-ohci usbcore ext3 jbd
Nov 22 02:22:59 smf kernel: CPU:    1
Nov 22 02:22:59 smf kernel: EIP:    0010:[<c0143076>]    Not tainted
Nov 22 02:22:59 smf kernel: EFLAGS: 00010246
Nov 22 02:22:59 smf kernel:
Nov 22 02:22:59 smf kernel: EIP is at page_referenced [kernel] 0x156 (2.4.20-18.7smp)
Nov 22 02:22:59 smf kernel: eax: c1000030   ebx: c1000030   ecx: 00000000   edx: 00000000
Nov 22 02:22:59 smf kernel: esi: c1000030   edi: 00000000   ebp: 000001f4   esp: dffcff74
Nov 22 02:22:59 smf kernel: ds: 0018   es: 0018   ss: 0018
Nov 22 02:22:59 smf kernel: Process kscand (pid: 6, stackpage=dffcf000)
Nov 22 02:22:59 smf kernel: Stack: c0384a00 00000000 00000000 00000001 dffcffac c100eb20 dffce000 c100eb20
Nov 22 02:22:59 smf kernel:        00000003 000001f4 c013b1e1 dffcffac c1016274 c030d1f0 00000001 dffce000
Nov 22 02:22:59 smf kernel:        c030c0a0 00000003 000001f4 c013d169 c030c0a0 00000003 00000000 dffce000
Nov 22 02:22:59 smf kernel: Call Trace:   [<c013b1e1>] scan_active_list [kernel] 0xe1 (0xdffcff9c))
Nov 22 02:22:59 smf kernel: [<c013d169>] kscand [kernel] 0x109 (0xdffcffc0))
Nov 22 02:22:59 smf kernel: [<c0105000>] stext [kernel] 0x0 (0xdffcffe8))

위와 같은 메시지가 messages 파일에 나오고 메일 서버인데 다운이 되어서 강제로 리부팅 시키면 괜찮고 얼마후 다시 다운 됩니다.