系统老死机

日志如下
Dec 17 20:55:46 x100plus php: callback-number = dialstatus = CHANUNAVAIL answeredtime =
Dec 18 04:57:01 x100plus kernel: ------------[ cut here ]------------
Dec 18 04:57:01 x100plus kernel: kernel BUG at mm/rmap.c:479!
Dec 18 04:57:01 x100plus kernel: invalid operand: 0000 [#1]
Dec 18 04:57:01 x100plus kernel: SMP
Dec 18 04:57:01 x100plus kernel: Modules linked in: ipt_MARK iptable_mangle 8139too mii md5 ipv6 wctdm(U) wcfxo(U) wctdm24xxp(U) wcte11xp(U) wct1xxp(U) wcte12xp(U) wct4xxp(U) tor2(U) ztdummy(U) zaptel(U) crc_ccitt ipt_MASQUERADE iptable_nat ipt_REJECT ipt_state ip_conntrack iptable_filter ip_tables dm_mirror dm_mod button battery ac uhci_hcd ehci_hcd snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore r8101(U) r8168(U) ext3 jbd ata_piix libata mptsas mptspi mptfc mptscsi mptbase sd_mod scsi_mod
Dec 18 04:57:01 x100plus kernel: CPU: 0
Dec 18 15:40:11 x100plus syslogd 1.4.1: restart.
Dec 18 15:40:11 x100plus syslog: syslogd startup succeeded
Dec 18 15:40:11 x100plus kernel: klogd 1.4.1, log source = /proc/kmsg started.
Dec 18 15:40:11 x100plus kernel: Linux version 2.6.9-42.ELsmp (buildcentos@build-i386) (gcc version 3.4.6 20060404 (Red Hat 3.4.6-3)) #1 SMP Sat Aug 12 09:39:11 CDT 2006
Dec 18 15:40:11 x100plus kernel: BIOS-provided physical RAM map:
Dec 18 15:40:11 x100plus kernel: BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
Dec 18 15:40:11 x100plus kernel: BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
Dec 18 15:40:11 x100plus kernel: BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
Dec 18 15:40:11 x100plus kernel: BIOS-e820: 0000000000100000 - 000000003f7f0000 (usable)
Dec 18 15:40:11 x100plus kernel: BIOS-e820: 000000003f7f0000 - 000000003f7fe000 (ACPI data)
Dec 18 15:40:11 x100plus kernel: BIOS-e820: 000000003f7fe000 - 000000003f800000 (ACPI NVS)
Dec 18 15:40:11 x100plus kernel: BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
Dec 18 15:40:11 x100plus kernel: BIOS-e820: 00000000fff00000 - 0000000100000000 (reserved)
Dec 18 15:40:11 x100plus kernel: 119MB HIGHMEM available.
Dec 18 15:40:11 x100plus syslog: klogd startup succeeded
Dec 18 15:40:11 x100plus fstab-sync[3635]: removed all generated mount points
Dec 18 15:40:11 x100plus kernel: 896MB LOWMEM available.
Dec 18 15:40:11 x100plus kernel: found SMP MP-table at 000ff780
Dec 18 15:40:11 x100plus kernel: NX (Execute Disable) protection: active
Dec 18 15:40:11 x100plus kernel: DMI 2.3 present.
Dec 18 15:40:11 x100plus kernel: Using APIC driver default
Dec 18 15:40:11 x100plus kernel: ACPI: PM-Timer IO Port: 0x808
Dec 18 15:40:11 x100plus kernel: ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
Dec 18 15:40:11 x100plus kernel: Processor #0 6:12 APIC version 20
Dec 18 15:40:11 x100plus kernel: ACPI: LAPIC (acpi_id[0x02] lapic_id[0x81] disabled)
Dec 18 15:40:11 x100plus kernel: Enabling APIC mode: Flat. Using 0 I/O APICs
Dec 18 15:40:11 x100plus kernel: ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
Dec 18 15:40:11 x100plus kernel: IOAPIC[0]: apic_id 1, version 32, address 0xfec00000, GSI 0-23
Dec 18 15:40:11 x100plus kernel: ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
Dec 18 15:40:11 x100plus kernel: ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
Dec 18 15:40:11 x100plus kernel: Using ACPI (MADT) for SMP configuration information
Dec 18 15:40:11 x100plus kernel: Allocating PCI resources starting at 40000000 (gap: 3f800000:bf600000)
Dec 18 15:40:11 x100plus kernel: Built 1 zonelists
Dec 18 15:40:11 x100plus kernel: Kernel command line: ro quiet root=LABEL=BLUE
Dec 18 15:40:11 x100plus kernel: Initializing CPU#0
Dec 18 15:40:11 x100plus kernel: CPU 0 irqstacks, hard=c03ee000 soft=c03ce000
Dec 18 15:40:11 x100plus kernel: PID hash table entries: 4096 (order: 12, 65536 bytes)
Dec 18 15:40:11 x100plus kernel: Detected 1596.178 MHz processor.
Dec 18 15:40:11 x100plus kernel: Using pmtmr for high-res timesource
Dec 18 15:40:11 x100plus kernel: Console: colour VGA+ 80x25
Dec 18 15:40:11 x100plus kernel: Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Dec 18 15:40:11 x100plus kernel: Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Dec 18 15:40:11 x100plus kernel: Memory: 1025416k/1040320k available (1876k kernel code, 14180k reserved, 759k data, 184k init, 122816k highmem)
Dec 18 15:40:11 x100plus kernel: Calibrating delay using timer specific routine.. 3195.41 BogoMIPS (lpj=1597707)
Dec 18 15:40:11 x100plus kernel: Security Scaffold v1.0.0 initialized
Dec 18 15:40:11 x100plus kernel: SELinux: Initializing.
Dec 18 15:40:11 x100plus kernel: SELinux: Starting in permissive mode
Dec 18 15:40:11 x100plus kernel: There is already a security framework initialized, register_security failed.
Dec 18 15:40:11 x100plus kernel: selinux_register_security: Registering secondary module capability
Dec 18 15:40:11 x100plus kernel: Capability LSM initialized as secondary
Dec 18 15:40:11 x100plus kernel: Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
Dec 18 15:40:11 x100plus kernel: monitor/mwait feature present.
系统是centos4.4的