我的kcore有268435455M ，怎么回事？

[zzw_happy]

# l --b m /proc/kcore
-r-------- 1 root root 268435455M Oct 19 19:30 /proc/kcore

# free -m
total used free shared buffers cached
Mem: 3954 2171 1782 0 157 760
-/+ buffers/cache: 1253 2701
Swap: 4102 0 4102

top结果：
top - 19:32:35 up 2 days, 18:46, 3 users, load average: 0.00, 0.00, 0.03
Tasks: 57 total, 1 running, 55 sleeping, 1 stopped, 0 zombie
Cpu(s): 0.1% us, 0.0% sy, 0.0% ni, 99.9% id, 0.0% wa, 0.0% hi, 0.0% si
Mem: 4049676k total, 2224344k used, 1825332k free, 161660k buffers
Swap: 4200956k total, 0k used, 4200956k free, 778780k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
28286 provgw 25 0 2953m 1.1g 77m S 0.0 29.5 0:51.49 java
16719 root 39 19 62908 13m 58m T 0.0 0.3 0:00.36 krandom.kss
29436 root 16 0 39184 2812 37m S 0.0 0.1 0:00.15 sshd
29875 root 16 0 39036 2804 37m S 0.0 0.1 0:00.09 sshd
3755 root 16 0 26760 2264 25m S 0.0 0.1 0:00.28 sshd
29439 root 16 0 12684 2248 11m S 0.0 0.1 0:00.13 bash
29879 root 15 0 12680 2232 11m S 0.0 0.1 0:00.10 bash


机器内存是4g。怎么回事？请高人指点。

[zzw_happy]

查看28286状态：
# cat /proc/28286/stat
28286 (java) S 1 28241 15335 0 -1 0 135975 231 18 0 5035 114 405 34 25 0 145 0 7968930 3097051136 298533 18446744073709551615 134512640 134570276 4294947072 18446744073709551615 4294960144 0 4 2 23757 18446744071563393966 0 0 17 0 0 0
# cat /proc/28286/status
Name: java
State: S (sleeping)
SleepAVG: 1%
Tgid: 28286
Pid: 28286
PPid: 1
TracerPid: 0
Uid: 1000 1000 1000 1000
Gid: 1000 1000 1000 1000
FDSize: 256
Groups: 14 16 17 33 1000
VmSize: 3024464 kB
VmLck: 0 kB
VmRSS: 1194132 kB
VmData: 2943212 kB
VmStk: 2036 kB
VmExe: 60 kB
VmLib: 78800 kB
Threads: 145
SigPnd: 0000000000000000
ShdPnd: 0000000000000000
SigBlk: 0000000000000004
SigIgn: 0000000000000002
SigCgt: 1000000080005ccd
CapInh: 0000000000000000
CapPrm: 0000000000000000
CapEff: 0000000000000000

[jjcang]

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