core analyzer
https://sourceforge.net/projects/core-analyzer/files/Core%20Analyzer/ から、バージョン 2.16 がダウンロードできます。
わたしは、core_analyzer の Print General Core Information くらいしか利用した事がありませんが、core ファイルのメモリマップの把握として使っています。
出力例
$ ./core_analyzer /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.131.x86_64/bin/java ./core.*
Please input the address of variable main_arena
You can find it by command "(gdb)print &main_arena"
main_arena ? 0x3d82d8e120
Please input the address of variable mp_
You can find it by command "(gdb)print &mp_"
mp_ ? 0x3d82d90720
Warning: 56 mmap memory blocks were found while mp_ reports 16
******************************************************************
** Core Analyzer version 2.16 **
** Please report bugs to: Michael Yan (myan@gmail.com) **
******************************************************************
Main Menu:
[0] Print General Core Information
[1] Find References to an Object (horizontal search)
[2] What Is This Address and Underlying Object Type (vertical search)
[3] Objects Shared Between Threads
[4] Memory Pattern Analysis
[5] Query Heap Memory Block
[6] Page Walk (check the integrity of surrounding memory blocks)
[7] Heap Walk (check the whole heap for corruption and memory usage stats)
[8] Biggest Heap Memory Blocks
[9] Biggest Heap Memory Owners(variables)
[10] Heap Memory Leak Candidates
[11] Quit
Select [0-11]: 0
NOTE
[0] name: CORE type: PRPSINFO
process_state=T
filename=java [java -verbose UnloadableClassLoader /home/imai/Java/myapp.jar com.example.myapp.]
[1] name: CORE type: PRSTATUS
pid=4040 signal=0 user_time=0.0sec sys_time=0.0sec
%rip=0x3d8320e82d %rsp=0x7f16681f31d0
[2] name: CORE type: FPREGSET [fpregset struct]
floating point register set
[3] name: LINUX type: 514
[4] name: CORE type: PRSTATUS
pid=4041 signal=0 user_time=0.0sec sys_time=0.0sec
%rip=0x3d8320b68c %rsp=0x7f166042a8a0
[5] name: CORE type: FPREGSET [fpregset struct]
floating point register set
[6] name: LINUX type: 514
[7] name: CORE type: PRSTATUS
pid=4042 signal=0 user_time=0.0sec sys_time=0.0sec
%rip=0x3d8320b68c %rsp=0x7f1660329920
[8] name: CORE type: FPREGSET [fpregset struct]
floating point register set
[9] name: LINUX type: 514
[10] name: CORE type: PRSTATUS
pid=4043 signal=0 user_time=0.0sec sys_time=0.0sec
%rip=0x3d8320ba5e %rsp=0x7f165d308870
[11] name: CORE type: FPREGSET [fpregset struct]
floating point register set
[12] name: LINUX type: 514
[13] name: CORE type: PRSTATUS
pid=4044 signal=0 user_time=0.0sec sys_time=0.0sec
[14] name: CORE type: FPREGSET [fpregset struct]
floating point register set
[15] name: LINUX type: 514
[16] name: CORE type: PRSTATUS
pid=4045 signal=0 user_time=0.0sec sys_time=0.0sec
%rip=0x3d8320b68c %rsp=0x7f165d1064e0
[17] name: CORE type: FPREGSET [fpregset struct]
floating point register set
[18] name: LINUX type: 514
[19] name: CORE type: PRSTATUS
pid=4046 signal=0 user_time=0.0sec sys_time=0.0sec
%rip=0x3d8320da00 %rsp=0x7f165d005930
[20] name: CORE type: FPREGSET [fpregset struct]
floating point register set
[21] name: LINUX type: 514
[22] name: CORE type: PRSTATUS
pid=4047 signal=0 user_time=0.0sec sys_time=0.0sec
%rip=0x3d8320b68c %rsp=0x7f165cf04a30
[23] name: CORE type: FPREGSET [fpregset struct]
floating point register set
[24] name: LINUX type: 514
[25] name: CORE type: PRSTATUS
pid=4048 signal=0 user_time=0.0sec sys_time=0.0sec
%rip=0x3d8320b68c %rsp=0x7f165ce03ab0
[26] name: CORE type: FPREGSET [fpregset struct]
floating point register set
[27] name: LINUX type: 514
[28] name: CORE type: PRSTATUS
pid=4049 signal=0 user_time=0.0sec sys_time=0.0sec
%rip=0x3d8320b68c %rsp=0x7f165cd027c0
[29] name: CORE type: FPREGSET [fpregset struct]
floating point register set
[30] name: LINUX type: 514
[31] name: CORE type: PRSTATUS
pid=4050 signal=0 user_time=0.0sec sys_time=0.0sec
%rip=0x3d8320ba5e %rsp=0x7f165cc01910
[32] name: CORE type: FPREGSET [fpregset struct]
floating point register set
[33] name: LINUX type: 514
[34] name: CORE type: PRSTATUS
pid=4039 signal=0 user_time=0.0sec sys_time=0.0sec
%rip=0x3d832082fd %rsp=0x7ffe7bb92c30
[35] name: CORE type: FPREGSET [fpregset struct]
floating point register set
[36] name: LINUX type: 514
[37] name: CORE type: AUXV
type=33
type=16 hardware_capability=395049983
type=6 pagesize=4096
type=17 frequency_of_times()=100
type=3 &phdr[0]=0x400040
type=4 sizeof(phdr[0])=56
type=5 #phdr_entries=8
type=7 ld.so_base_addr=0x0
type=8 proc_flags=0x0
type=9 entry_point=0x400610
type=11 real_uid=0
type=12 effective_uid=0
type=13 real_gid=0
type=14 effective_gid=0
type=23 was_exec_setuid-like? NO
type=25
type=31
type=15 plat_name=0x7ffe7bb97279
No. vaddr memsz filesz perm name
=================================================================
[ 0] 0x600000 8192 8192 RW- [ .data ] [ /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.131.x86_64/bin/java ]
[ 1] 0x14cc000 135168 135168 RW- [ heap ]
[ 2] 0xbea00000 53477376 53477376 RW- [ heap ]
[ 3] 0xc1d00000 120586240 120586240 RW- [ unknown ]
[ 4] 0xc9000000 212860928 212860928 RW- [ .data ] [ /lib64/libm.so.6 ]
[ 5] 0xd5b00000 402128896 402128896 RW- [ .data ] [ /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.131.x86_64/jre/bin/../lib/amd64/jli/libjli.so ]
[ 6] 0xeda80000 307757056 307757056 RW- [ .data ] [ /lib64/libpthread.so.0 ]
[ 7] 0x3d8241f000 8192 8192 R-- [ .rodat] [ /lib64/ld-linux-x86-64.so.2 ]
[ 8] 0x3d82421000 4096 4096 RW- [ unknown ]
[ 9] 0x3d82422000 4096 4096 RW- [ .data ] [ /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.131.x86_64/bin/java ]
[ 10] 0x3d82802000 4096 4096 R-- [ .rodat] [ /lib64/libdl.so.2 ]
[ 11] 0x3d82803000 4096 4096 RW- [ unknown ]
[ 12] 0x3d82d8a000 16384 16384 R-- [ .rodat] [ /lib64/libc.so.6 ]
[ 13] 0x3d82d8e000 8192 8192 RW- [ unknown ]
[ 14] 0x3d82d90000 16384 16384 RW- [ unknown ]
[ 15] 0x3d8300c000 4096 4096 RW- [ .data ] [ /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.131.x86_64/jre/bin/../lib/amd64/jli/libjli.so ]
[ 16] 0x3d83417000 4096 4096 R-- [ .rodat] [ /lib64/libpthread.so.0 ]
[ 17] 0x3d83418000 4096 4096 RW- [ unknown ]
[ 18] 0x3d83419000 16384 16384 RW- [ unknown ]
[ 19] 0x3d83806000 4096 4096 R-- [ .rodat] [ /lib64/librt.so.1 ]
[ 20] 0x3d83807000 4096 4096 RW- [ unknown ]
[ 21] 0x3d83c15000 4096 4096 RW- [ unknown ]
[ 22] 0x3d8c815000 4096 4096 RW- [ .data ] [ /lib64/libgcc_s.so.1 ]
[ 23] 0x3d8e0e8000 28672 28672 R-- [ .rodat] [ /usr/lib64/libstdc++.so.6 ]
[ 24] 0x3d8e0ef000 8192 8192 RW- [ unknown ]
[ 25] 0x3d8e0f1000 86016 86016 RW- [ unknown ]
[ 26] 0x7f160c000000 4468736 4468736 RW- [ heap ]
[ 27] 0x7f160c443000 62640128 62640128 R-- [ unknown ]
[ 28] 0x7f1614000000 66998272 66998272 RW- [ heap ]
[ 29] 0x7f1617fe5000 110592 110592 R-- [ unknown ]
[ 30] 0x7f161c000000 67051520 67051520 RW- [ heap ]
[ 31] 0x7f161fff2000 57344 57344 R-- [ unknown ]
[ 32] 0x7f1624000000 67076096 67076096 RW- [ heap ]
[ 33] 0x7f1627ff8000 32768 32768 R-- [ unknown ]
[ 34] 0x7f1628000000 67043328 67043328 RW- [ heap ]
[ 35] 0x7f162bff0000 65536 65536 R-- [ unknown ]
[ 36] 0x7f162c000000 135168 135168 RW- [ heap ]
[ 37] 0x7f162c021000 66973696 66973696 R-- [ unknown ]
[ 38] 0x7f1630000000 135168 135168 RW- [ heap ]
[ 39] 0x7f1630021000 66973696 66973696 R-- [ unknown ]
[ 40] 0x7f1634000000 12283904 12283904 RW- [ heap ]
[ 41] 0x7f1634bb7000 54824960 54824960 R-- [ unknown ]
[ 42] 0x7f1638000000 9154560 9154560 RW- [ heap ]
[ 43] 0x7f16388bb000 57954304 57954304 R-- [ unknown ]
[ 44] 0x7f163c000000 135168 135168 RW- [ heap ]
[ 45] 0x7f163c021000 66973696 66973696 R-- [ unknown ]
[ 46] 0x7f1648000000 135168 135168 RW- [ heap ]
[ 47] 0x7f1648021000 66973696 66973696 R-- [ unknown ]
[ 48] 0x7f164c000000 135168 135168 RW- [ heap ]
[ 49] 0x7f164c021000 66973696 66973696 R-- [ unknown ]
[ 50] 0x7f1650000000 1060864 1060864 RW- [ heap ]
[ 51] 0x7f1650103000 66048000 66048000 R-- [ unknown ]
[ 52] 0x7f1654000000 135168 135168 RW- [ heap ]
[ 53] 0x7f1654021000 66973696 66973696 R-- [ unknown ]
[ 54] 0x7f1658000000 872448 872448 RW- [ heap ]
[ 55] 0x7f16580d5000 66236416 66236416 R-- [ unknown ]
[ 56] 0x7f165cb02000 4096 4096 R-- [ unknown ]
[ 57] 0x7f165cb03000 1048576 1048576 RW- [ stack ] [ tid=11 ]
[ 58] 0x7f165cc03000 12288 12288 R-- [ unknown ]
[ 59] 0x7f165cc06000 1040384 1040384 RW- [ stack ] [ tid=10 ]
[ 60] 0x7f165cd04000 12288 12288 R-- [ unknown ]
[ 61] 0x7f165cd07000 1040384 1040384 RW- [ stack ] [ tid=9 ]
[ 62] 0x7f165ce05000 12288 12288 R-- [ unknown ]
[ 63] 0x7f165ce08000 1040384 1040384 RW- [ stack ] [ tid=8 ]
[ 64] 0x7f165cf06000 12288 12288 R-- [ unknown ]
[ 65] 0x7f165cf09000 1040384 1040384 RW- [ stack ] [ tid=7 ]
[ 66] 0x7f165d007000 12288 12288 R-- [ unknown ]
[ 67] 0x7f165d00a000 1040384 1040384 RW- [ stack ] [ tid=6 ]
[ 68] 0x7f165d108000 12288 12288 R-- [ unknown ]
[ 69] 0x7f165d10b000 1040384 1040384 RW- [ stack ] [ tid=5 ]
[ 70] 0x7f165d209000 4096 4096 R-- [ unknown ]
[ 71] 0x7f165d20a000 11231232 11231232 RW- [ heap ]
[ 72] 0x7f165de76000 37437440 37437440 RW- [ heap ]
[ 73] 0x7f166022a000 4096 4096 R-- [ unknown ]
[ 74] 0x7f166022b000 1048576 1048576 RW- [ stack ] [ tid=3 ]
[ 75] 0x7f166032b000 4096 4096 R-- [ unknown ]
[ 76] 0x7f166032c000 1155072 1155072 RW- [ stack ] [ tid=2 ]
[ 77] 0x7f1660446000 233472 233472 RW- [ unknown ]
[ 78] 0x7f166047f000 417792 417792 RW- [ unknown ]
[ 79] 0x7f16604e5000 786432 786432 RW- [ unknown ]
[ 80] 0x7f16605a5000 106496 106496 RW- [ unknown ]
[ 81] 0x7f16605bf000 233472 233472 RW- [ unknown ]
[ 82] 0x7f16605f8000 417792 417792 RW- [ unknown ]
[ 83] 0x7f166065e000 782336 782336 RW- [ unknown ]
[ 84] 0x7f166071d000 602112 602112 RW- [ unknown ]
[ 85] 0x7f16607b0000 4096 4096 RW- [ unknown ]
[ 86] 0x7f16607b1000 2555904 2555904 RWX [ unknown ]
[ 87] 0x7f1660a21000 47775744 47775744 RW- [ unknown ]
[ 88] 0x7f16639b8000 4096 4096 RW- [ .data ] [ /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.131.x86_64/jre/lib/amd64/libzip.so ]
[ 89] 0x7f1663bc5000 4096 4096 R-- [ .rodat] [ /lib64/libnss_files.so.2 ]
[ 90] 0x7f1663bc6000 4096 4096 RW- [ unknown ]
[ 91] 0x7f1663def000 8192 8192 RW- [ .data ] [ /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.131.x86_64/jre/lib/amd64/libjava.so ]
[ 92] 0x7f1663ffe000 8192 8192 RW- [ .data ] [ /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.131.x86_64/jre/lib/amd64/libverify.so ]
[ 93] 0x7f1664000000 67104768 67104768 RW- [ heap ]
[ 94] 0x7f1667fff000 4096 4096 R-- [ unknown ]
[ 95] 0x7f1668021000 126976 126976 RW- [ unknown ]
[ 96] 0x7f1668040000 745472 745472 RW- [ unknown ]
[ 97] 0x7f16680f6000 12288 12288 R-- [ unknown ]
[ 98] 0x7f16680f9000 1040384 1040384 RW- [ stack ] [ tid=1 ]
[ 99] 0x7f1668479000 4096 4096 R-- [ .rodat] [ /lib64/libm.so.6 ]
[100] 0x7f166847a000 4096 4096 RW- [ unknown ]
[101] 0x7f16691b9000 802816 802816 RW- [ .data ] [ /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.131.x86_64/jre/lib/amd64/server/libjvm.so ]
[102] 0x7f166927d000 204800 204800 RW- [ unknown ]
[103] 0x7f16692c4000 4096 4096 RW- [ unknown ]
[104] 0x7f16692c5000 4096 4096 R-- [ unknown ]
[105] 0x7f16692c6000 4096 4096 RW- [ unknown ]
[106] 0x7ffe7bb84000 86016 86016 RW- [ stack ] [ tid=12 ]
[107] 0x7ffe7bba3000 4096 4096 R-X [ unknown ]
[108] 0xffffffffff600000 4096 4096 R-X [ unknown ]
Main Menu:
[0] Print General Core Information
[1] Find References to an Object (horizontal search)
[2] What Is This Address and Underlying Object Type (vertical search)
[3] Objects Shared Between Threads
[4] Memory Pattern Analysis
[5] Query Heap Memory Block
[6] Page Walk (check the integrity of surrounding memory blocks)
[7] Heap Walk (check the whole heap for corruption and memory usage stats)
[8] Biggest Heap Memory Blocks
[9] Biggest Heap Memory Owners(variables)
[10] Heap Memory Leak Candidates
[11] Quit
Select [0-11]:
core_analyzer 2.16 のインストール
この投稿を書いている時点 2018.5.25 では 2.18 がありますが、RHEL 7 などでは、ライブラリが不足しているとのエラーで動作しません。
そのため旧バージョンですが core_analyzer 2.16 を使います。
# mkdir /work
# cd /work
まずは 7zip を適当なところからダウンロード＆インストールします。
● RHEL 6
# wget https://www.mirrorservice.org/sites/dl.fedoraproject.org/pub/epel/6/x86_64/Packages/p/p7zip-16.02-10.el6.x86_64.rpm
# rpm -ivh p7zip-16.02-10.el6.x86_64.rpm
● RHEL 7
# wget https://www.mirrorservice.org/sites/dl.fedoraproject.org/pub/epel/7/x86_64/Packages/p/p7zip-16.02-10.el7.x86_64.rpm
# rpm -ivh p7zip-16.02-10.el7.x86_64.rpm
core_analyzer_2.16 をダウンロード＆展開します。
# wget https://jaist.dl.sourceforge.net/project/core-analyzer/Core%20Analyzer/core_analyzer_2_16.7z
# 7za x core_analyzer_2_16.7z
...
# chmod 755 ./core_analyzer_2_16/Linux/core_analyzer
core_analyzer にパッチをあてる
ソースコードからのコンパイルは面倒なので、手抜きですがバイナリにパッチをあて起動できるようにします。
# ./core_analyzer_2_16/Linux/core_analyzer /work/abc /work/core.1292
The memory manager of glibc 2.17 is not supported in this release
Fail to initialize core analyzer
#
上記のとおりエラーで起動しないので、glibc のバージョンチェック部分にパッチをあてます。
# gdb -write -q ./core_analyzer_2_16/Linux/core_analyzer
...
(gdb) x/10i 0x40e8b9
0x40e8b9 <init_heap()+415>: mov 0x20617d(%rip),%edx # 0x614a3c <glibc_ver_minor>
0x40e8bf <init_heap()+421>: lea -0x3(%rdx),%eax
0x40e8c2 <init_heap()+424>: cmp $0x2,%eax
0x40e8c5 <init_heap()+427>: jbe 0x40e8eb <init_heap()+465>
0x40e8c7 <init_heap()+429>: cmp $0xc,%edx
0x40e8ca <init_heap()+432>: je 0x40e8eb <init_heap()+465>
0x40e8cc <init_heap()+434>: mov 0x2061ae(%rip),%esi # 0x614a80 <glibc_ver_major>
0x40e8d2 <init_heap()+440>: mov $0x411c48,%edi
0x40e8d7 <init_heap()+445>: mov $0x0,%eax
0x40e8dc <init_heap()+450>: callq 0x4012f8 <printf@plt>
(gdb)
(gdb) set {unsigned char}0x40e8c4 = 0x11
(gdb) x/i 0x40e8c2
0x40e8c2 <init_heap()+424>: cmp $0x11,%eax
(gdb) q
変更後、エラーは出ません。
# ./core_analyzer_2_16/Linux/core_analyzer /work/abc /work/core.1292
Please input the address of variable main_arena
You can find it by command "(gdb)print &main_arena"
main_arena ?
変更している内容
./gdbplus/gdb-7.7/gdb/heap_ptmalloc.c
1417 // Support a subset of all glibc versions
- 1418 if (glibc_ver_minor != 3
- 1419 && glibc_ver_minor != 4
- 1420 && glibc_ver_minor != 5
- 1421 //&& glibc_ver_minor != 11
1422 && glibc_ver_minor != 12)
1423 {
1424 CA_PRINT("The memory manager of glibc %d.%d is not supported in this release\n",
1425 glibc_ver_major, glibc_ver_minor);
1426 return CA_FALSE;
1427 }
たぶん上記が以下のように変更されたのと等価のはず？？？
+ if (glibc_ver_minor > 17 &&
&& glibc_ver_minor != 12)
core_analyzer の実行
gdb で main_arena と mp_ を調べた後に実行します。
(gdb) p &main_arena
$1 = (<data variable, no debug info> *) 0x7f606ca34760 <main_arena>
(gdb) p &mp_
$2 = (<data variable, no debug info> *) 0x7f606ca341a0 <mp_>
(gdb)
確認しておいたアドレスを、 core_analyzer に入力
# ./core_analyzer_2_16/Linux/core_analyzer /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.131-11.b12.el7.x86_64/bin/java /home/imai/Java/core.*
Please input the address of variable main_arena
You can find it by command "(gdb)print &main_arena"
main_arena ? 0x7f606ca34760
Please input the address of variable mp_
You can find it by command "(gdb)print &mp_"
mp_ ? 0x7f606ca341a0
最初に記載した出力が行われます。
健忘録としてと、また、何かのヒントになれば幸いです。