kernel message

浪平生

yum后，出现了这样的问题,具体如下：
Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: iret exception: 0000 [#6]

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: SMP

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: CPU: 0

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: EIP: 2e2e:[<02020024>] Not tainted VLI

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: EFLAGS: 0014fb32 (2.6.20-1.2944.fc6xen #1)

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: EIP is at 0x2020024

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: eax: 00000000 ebx: 005d6402 ecx: 00000073 edx: 00100202

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: esi: bfbdd968 edi: 0000007b ebp: 00000000 esp: cf48a01c

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: ds: 0000 es: 0000 ss: 0069

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: Process metacity (pid: 3624, ti=cf489000 task=cdf08b70 task.ti=cf489000)

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: Stack: 010e0018 6f636725 782e666e 6e2e6c6d 00007765 0014fb32 010a0fd0 6f636725

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: 782e666e 00006c6d 00000000 00000000 00000000 00000000 00000000 00000000

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: Call Trace:

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: Oops: 0000 [#7]

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: SMP

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: CPU: 0

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: EIP: 0061:[<c04055c2>] Not tainted VLI

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: EFLAGS: 00110093 (2.6.20-1.2944.fc6xen #1)

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: EIP is at dump_trace+0x5c/0x93

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: eax: 010a0ffd ebx: 010a0fd0 ecx: fffffa3b edx: 00c1e900

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: esi: 00000000 edi: 010a0000 ebp: c0693e66 esp: cf489e7c

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: ds: 007b es: 007b ss: 0069

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: Process metacity (pid: 3624, ti=cf489000 task=cdf08b70 task.ti=cf489000)

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: Stack: c0693d26 c0693e66 00000018 00000000 c0693e66 c0405611 c06e44e0 c0693e66

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: cf48a07f c04056c0 c0693e66 c0693e66 cf489fe4 cf48a01c 00000002 0014fb32

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: cf489fe4 cf48a01c c0405856 c0693e66 00000010 cdf08d04 00000e28 cf489000

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: Call Trace:

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c0405611>] show_trace_log_lvl+0x18/0x2c

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c04056c0>] show_stack_log_lvl+0x9b/0xa3

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c0405856>] show_registers+0x18e/0x25d

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c0613b05>] notifier_call_chain+0x19/0x29

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c0405a58>] die+0x133/0x22f

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c0406302>] do_iret_error+0xa7/0xb1

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c040500c>] scrit+0xc/0x1a

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c040500d>] scrit+0xd/0x1a

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c040500e>] scrit+0xe/0x1a

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c0405013>] scrit+0x13/0x1a

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c042beaf>] search_exception_tables+0x14/0x25

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c041444f>] fixup_exception+0xb/0x20

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c0612245>] do_general_protection+0x11c/0x16f

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c040687b>] do_IRQ+0xc6/0xdb

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c0612129>] do_general_protection+0x0/0x16f

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c040625b>] do_iret_error+0x0/0xb1

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: [<c0611d2d>] error_code+0x35/0x3c

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: =======================

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: Code: 9a d4 01 00 00 89 df 81 e7 00 f0 ff ff eb 0e 8b 4c 24 18 89 f2 89 e8 ff 51 08 83 c3 04 39 fb 76 29 8d 87 fd 0f 00 00 39 c3 73 1f <8b> 33 89 f0 e8 ad 68 02 00 85 c0 74 e2 eb d5 8b 4f 34 85 c9 74

Message from syslogd@localhost at Sun Apr 29 22:26:04 2007 ...
localhost kernel: EIP: [<c04055c2>] dump_trace+0x5c/0x93 SS:ESP 0069:cf489e7c

当shell中出现这样子后不到几秒，系统自动重启。
在google上找到个类似的http://forums.fedoraforum.org/showthread.php?t=151266 不过还是无法解决。
有时候会发现屏幕一阵突亮，然后自动回到xwindow登录界面，这最让我不解了，怎么回事？