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SubjectRe: ppc elf_map breakage with MAP_FIXED_NOREPLACE
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Date
On 01/09/2018 03:42 AM, Michael Ellerman wrote:
> Anshuman Khandual <khandual@linux.vnet.ibm.com> writes:
>
>> On 01/07/2018 04:56 PM, Michael Ellerman wrote:
>>> Michal Hocko <mhocko@kernel.org> writes:
>>>
>>>> On Sun 07-01-18 12:19:32, Anshuman Khandual wrote:
>>>>> On 01/05/2018 02:16 PM, Michal Hocko wrote:
>>>> [...]
>>>>>> Could you give us more information about the failure please. Debugging
>>>>>> patch from http://lkml.kernel.org/r/20171218091302.GL16951@dhcp22.suse.cz
>>>>>> should help to see what is the clashing VMA.
>>>>> Seems like its re-requesting the same mapping again.
>>>> It always seems to be the same mapping which is a bit strange as we
>>>> have multiple binaries here. Are these binaries any special? Does this
>>>> happen to all bianries (except for init which has obviously started
>>>> successfully)? Could you add an additional debugging (at the do_mmap
>>>> layer) to see who is requesting the mapping for the first time?
>>>>
>>>>> [ 23.423642] 9148 (sed): Uhuuh, elf segment at 0000000010030000 requested but the memory is mapped already
>>>>> [ 23.423706] requested [10030000, 10040000] mapped [10030000, 10040000] 100073 anon
>>>> I also find it a bit unexpected that this is an anonymous mapping
>>>> because the elf loader should always map a file backed one.
>>> Anshuman what machine is this on, and what distro and toolchain is it running?
>>>
>>> I don't see this on any of my machines, so I wonder if this is
>>> toolchain/distro specific.
>>
>> POWER9, RHEL 7.4, gcc (GCC) 4.8.5 20150623, GNU Make 3.82 etc.
>
> So what does readelf -a of /bin/sed look like?

Please find here.

=================================================================================================
ELF Header:
Magic: 7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00
Class: ELF64
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: EXEC (Executable file)
Machine: PowerPC64
Version: 0x1
Entry point address: 0x10002b70
Start of program headers: 64 (bytes into file)
Start of section headers: 135560 (bytes into file)
Flags: 0x2, abiv2
Size of this header: 64 (bytes)
Size of program headers: 56 (bytes)
Number of program headers: 10
Size of section headers: 64 (bytes)
Number of section headers: 28
Section header string table index: 27

Section Headers:
[Nr] Name Type Address Offset
Size EntSize Flags Link Info Align
[ 0] NULL 0000000000000000 00000000
0000000000000000 0000000000000000 0 0 0
[ 1] .interp PROGBITS 0000000010000270 00000270
0000000000000011 0000000000000000 A 0 0 1
[ 2] .note.ABI-tag NOTE 0000000010000284 00000284
0000000000000020 0000000000000000 A 0 0 4
[ 3] .note.gnu.build-i NOTE 00000000100002a4 000002a4
0000000000000024 0000000000000000 A 0 0 4
[ 4] .gnu.hash GNU_HASH 00000000100002c8 000002c8
000000000000003c 0000000000000000 A 5 0 8
[ 5] .dynsym DYNSYM 0000000010000308 00000308
0000000000000a98 0000000000000018 A 6 1 8
[ 6] .dynstr STRTAB 0000000010000da0 00000da0
0000000000000456 0000000000000000 A 0 0 1
[ 7] .gnu.version VERSYM 00000000100011f6 000011f6
00000000000000e2 0000000000000002 A 5 0 2
[ 8] .gnu.version_r VERNEED 00000000100012d8 000012d8
0000000000000020 0000000000000000 A 6 1 8
[ 9] .rela.dyn RELA 00000000100012f8 000012f8
0000000000000168 0000000000000018 A 5 0 8
[10] .rela.plt RELA 0000000010001460 00001460
0000000000000948 0000000000000018 A 5 22 8
[11] .init PROGBITS 0000000010001dc0 00001dc0
000000000000004c 0000000000000000 AX 0 0 32
[12] .text PROGBITS 0000000010001e20 00001e20
000000000000e550 0000000000000000 AX 0 0 32
[13] .fini PROGBITS 0000000010010370 00010370
0000000000000024 0000000000000000 AX 0 0 4
[14] .rodata PROGBITS 0000000010010398 00010398
0000000000001738 0000000000000000 A 0 0 8
[15] .eh_frame_hdr PROGBITS 0000000010011ad0 00011ad0
00000000000004b4 0000000000000000 A 0 0 4
[16] .eh_frame PROGBITS 0000000010011f88 00011f88
0000000000001b04 0000000000000000 A 0 0 8
[17] .init_array INIT_ARRAY 000000001002fd40 0001fd40
0000000000000008 0000000000000000 WA 0 0 8
[18] .fini_array FINI_ARRAY 000000001002fd48 0001fd48
0000000000000008 0000000000000000 WA 0 0 8
[19] .jcr PROGBITS 000000001002fd50 0001fd50
0000000000000008 0000000000000000 WA 0 0 8
[20] .dynamic DYNAMIC 000000001002fd58 0001fd58
0000000000000200 0000000000000010 WA 6 0 8
[21] .got PROGBITS 000000001002ff58 0001ff58
00000000000000a8 0000000000000008 WA 0 0 8
[22] .plt NOBITS 0000000010030000 00020000
0000000000000328 0000000000000008 WA 0 0 8
[23] .data PROGBITS 0000000010030328 00020328
0000000000000384 0000000000000000 WA 0 0 8
[24] .bss NOBITS 00000000100306b0 000206ac
0000000000009118 0000000000000000 WA 0 0 8
[25] .gnu_debuglink PROGBITS 0000000000000000 000206ac
0000000000000010 0000000000000000 0 0 4
[26] .gnu_debugdata PROGBITS 0000000000000000 000206bc
00000000000009c4 0000000000000000 0 0 1
[27] .shstrtab STRTAB 0000000000000000 00021080
0000000000000104 0000000000000000 0 0 1
Key to Flags:
W (write), A (alloc), X (execute), M (merge), S (strings), I (info),
L (link order), O (extra OS processing required), G (group), T (TLS),
C (compressed), x (unknown), o (OS specific), E (exclude),
p (processor specific)

There are no section groups in this file.

Program Headers:
Type Offset VirtAddr PhysAddr
FileSiz MemSiz Flags Align
PHDR 0x0000000000000040 0x0000000010000040 0x0000000010000040
0x0000000000000230 0x0000000000000230 R E 8
INTERP 0x0000000000000270 0x0000000010000270 0x0000000010000270
0x0000000000000011 0x0000000000000011 R 1
[Requesting program interpreter: /lib64/ld64.so.2]
LOAD 0x0000000000000000 0x0000000010000000 0x0000000010000000
0x0000000000013a8c 0x0000000000013a8c R E 10000
LOAD 0x000000000001fd40 0x000000001002fd40 0x000000001002fd40
0x00000000000002c0 0x00000000000005e8 RW 10000
LOAD 0x0000000000020328 0x0000000010030328 0x0000000010030328
0x0000000000000384 0x00000000000094a0 RW 10000
DYNAMIC 0x000000000001fd58 0x000000001002fd58 0x000000001002fd58
0x0000000000000200 0x0000000000000200 RW 8
NOTE 0x0000000000000284 0x0000000010000284 0x0000000010000284
0x0000000000000044 0x0000000000000044 R 4
GNU_EH_FRAME 0x0000000000011ad0 0x0000000010011ad0 0x0000000010011ad0
0x00000000000004b4 0x00000000000004b4 R 4
GNU_STACK 0x0000000000000000 0x0000000000000000 0x0000000000000000
0x0000000000000000 0x0000000000000000 RW 10
GNU_RELRO 0x000000000001fd40 0x000000001002fd40 0x000000001002fd40
0x00000000000002c0 0x00000000000002c0 R 1

Section to Segment mapping:
Segment Sections...
00
01 .interp
02 .interp .note.ABI-tag .note.gnu.build-id .gnu.hash .dynsym .dynstr .gnu.version .gnu.version_r .rela.dyn .rela.plt .init .text .fini .rodata .eh_frame_hdr .eh_frame
03 .init_array .fini_array .jcr .dynamic .got .plt
04 .data .bss
05 .dynamic
06 .note.ABI-tag .note.gnu.build-id
07 .eh_frame_hdr
08
09 .init_array .fini_array .jcr .dynamic .got

Dynamic section at offset 0x1fd58 contains 27 entries:
Tag Type Name/Value
0x0000000000000001 (NEEDED) Shared library: [libselinux.so.1]
0x0000000000000001 (NEEDED) Shared library: [libc.so.6]
0x000000000000000c (INIT) 0x10001dd0
0x000000000000000d (FINI) 0x10010370
0x0000000000000019 (INIT_ARRAY) 0x1002fd40
0x000000000000001b (INIT_ARRAYSZ) 8 (bytes)
0x000000000000001a (FINI_ARRAY) 0x1002fd48
0x000000000000001c (FINI_ARRAYSZ) 8 (bytes)
0x000000006ffffef5 (GNU_HASH) 0x100002c8
0x0000000000000005 (STRTAB) 0x10000da0
0x0000000000000006 (SYMTAB) 0x10000308
0x000000000000000a (STRSZ) 1110 (bytes)
0x000000000000000b (SYMENT) 24 (bytes)
0x0000000000000015 (DEBUG) 0x0
0x0000000000000003 (PLTGOT) 0x10030000
0x0000000000000002 (PLTRELSZ) 2376 (bytes)
0x0000000000000014 (PLTREL) RELA
0x0000000000000017 (JMPREL) 0x10001460
0x0000000070000000 (PPC64_GLINK) 0x100101a0
0x0000000070000003 (PPC64_OPT) 0x0
0x0000000000000007 (RELA) 0x100012f8
0x0000000000000008 (RELASZ) 360 (bytes)
0x0000000000000009 (RELAENT) 24 (bytes)
0x000000006ffffffe (VERNEED) 0x100012d8
0x000000006fffffff (VERNEEDNUM) 1
0x000000006ffffff0 (VERSYM) 0x100011f6
0x0000000000000000 (NULL) 0x0

Relocation section '.rela.dyn' at offset 0x12f8 contains 15 entries:
Offset Info Type Sym. Value Sym. Name + Addend
00001002ff60 003400000026 R_PPC64_ADDR64 0000000000000000 __gmon_start__ + 0
00001002ff88 000c00000026 R_PPC64_ADDR64 0000000000000000 stderr@GLIBC_2.17 + 0
00001002ffb8 000c00000026 R_PPC64_ADDR64 0000000000000000 stderr@GLIBC_2.17 + 0
00001002ffd0 000c00000026 R_PPC64_ADDR64 0000000000000000 stderr@GLIBC_2.17 + 0
00001002fff0 000c00000026 R_PPC64_ADDR64 0000000000000000 stderr@GLIBC_2.17 + 0
00001002ff90 002100000026 R_PPC64_ADDR64 0000000000000000 stdout@GLIBC_2.17 + 0
00001002ffb0 002100000026 R_PPC64_ADDR64 0000000000000000 stdout@GLIBC_2.17 + 0
00001002ffd8 002100000026 R_PPC64_ADDR64 0000000000000000 stdout@GLIBC_2.17 + 0
00001002ffe8 002100000026 R_PPC64_ADDR64 0000000000000000 stdout@GLIBC_2.17 + 0
00001002fff8 002100000026 R_PPC64_ADDR64 0000000000000000 stdout@GLIBC_2.17 + 0
00001002ff98 000f00000026 R_PPC64_ADDR64 0000000000000000 optarg@GLIBC_2.17 + 0
00001002ffa0 001700000026 R_PPC64_ADDR64 0000000000000000 optind@GLIBC_2.17 + 0
00001002ffa8 002e00000026 R_PPC64_ADDR64 0000000000000000 stdin@GLIBC_2.17 + 0
00001002ffc8 002e00000026 R_PPC64_ADDR64 0000000000000000 stdin@GLIBC_2.17 + 0
00001002ffe0 002e00000026 R_PPC64_ADDR64 0000000000000000 stdin@GLIBC_2.17 + 0

Relocation section '.rela.plt' at offset 0x1460 contains 99 entries:
Offset Info Type Sym. Value Sym. Name + Addend
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000010030018 000200000015 R_PPC64_JMP_SLOT 0000000000000000 memcpy@GLIBC_2.17 + 0
000010030020 000300000015 R_PPC64_JMP_SLOT 0000000000000000 memmove@GLIBC_2.17 + 0
000010030028 000400000015 R_PPC64_JMP_SLOT 0000000000000000 strlen@GLIBC_2.17 + 0
000010030030 000500000015 R_PPC64_JMP_SLOT 0000000000000000 __sprintf_chk@GLIBC_2.17 + 0
000010030038 000600000015 R_PPC64_JMP_SLOT 0000000000000000 exit@GLIBC_2.17 + 0
000010030040 000700000015 R_PPC64_JMP_SLOT 0000000000000000 is_selinux_enabled + 0
000010030048 000800000015 R_PPC64_JMP_SLOT 0000000000000000 error@GLIBC_2.17 + 0
000010030050 000a00000015 R_PPC64_JMP_SLOT 0000000000000000 readlink@GLIBC_2.17 + 0
000010030058 000b00000015 R_PPC64_JMP_SLOT 0000000000000000 ftell@GLIBC_2.17 + 0
000010030060 000d00000015 R_PPC64_JMP_SLOT 0000000000000000 setvbuf@GLIBC_2.17 + 0
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The decoding of unwind sections for machine type PowerPC64 is not currently supported.

Symbol table '.dynsym' contains 113 entries:
Num: Value Size Type Bind Vis Ndx Name
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40: 0000000000000000 0 FUNC GLOBAL DEFAULT UND calloc@GLIBC_2.17 (2)
41: 0000000000000000 0 FUNC GLOBAL DEFAULT UND realloc@GLIBC_2.17 (2)
42: 0000000000000000 0 FUNC GLOBAL DEFAULT UND lgetfilecon
43: 0000000000000000 0 FUNC GLOBAL DEFAULT UND re_search@GLIBC_2.17 (2)
44: 0000000000000000 0 FUNC GLOBAL DEFAULT UND __ctype_toupper_loc@GLIBC_2.17 (2)
45: 0000000000000000 0 FUNC GLOBAL DEFAULT UND rewind@GLIBC_2.17 (2)
46: 0000000000000000 0 OBJECT GLOBAL DEFAULT UND stdin@GLIBC_2.17 (2)
47: 0000000000000000 0 FUNC GLOBAL DEFAULT UND fscanf@GLIBC_2.17 (2)
48: 0000000000000000 0 FUNC GLOBAL DEFAULT UND strerror@GLIBC_2.17 (2)
49: 0000000000000000 0 FUNC GLOBAL DEFAULT UND __stack_chk_fail@GLIBC_2.17 (2)
50: 0000000000000000 0 FUNC GLOBAL DEFAULT UND close@GLIBC_2.17 (2)
51: 0000000000000000 0 FUNC GLOBAL DEFAULT UND strrchr@GLIBC_2.17 (2)
52: 0000000000000000 0 NOTYPE WEAK DEFAULT UND __gmon_start__
53: 0000000000000000 0 FUNC GLOBAL DEFAULT UND btowc@GLIBC_2.17 (2)
54: 0000000000000000 0 FUNC GLOBAL DEFAULT UND abort@GLIBC_2.17 (2)
55: 0000000000000000 0 FUNC GLOBAL DEFAULT UND mkostemp@GLIBC_2.17 (2)
56: 0000000000000000 0 FUNC GLOBAL DEFAULT UND re_compile_pattern@GLIBC_2.17 (2)
57: 0000000000000000 0 FUNC GLOBAL DEFAULT UND getfilecon
58: 0000000000000000 0 FUNC GLOBAL DEFAULT UND mbsinit@GLIBC_2.17 (2)
59: 0000000000000000 0 FUNC GLOBAL DEFAULT UND __overflow@GLIBC_2.17 (2)
60: 0000000000000000 0 FUNC GLOBAL DEFAULT UND fread_unlocked@GLIBC_2.17 (2)
61: 0000000000000000 0 FUNC GLOBAL DEFAULT UND memcmp@GLIBC_2.17 (2)
62: 0000000000000000 0 FUNC GLOBAL DEFAULT UND textdomain@GLIBC_2.17 (2)
63: 0000000000000000 0 FUNC GLOBAL DEFAULT UND setfscreatecon
64: 0000000000000000 0 FUNC GLOBAL DEFAULT UND _IO_putc@GLIBC_2.17 (2)
65: 0000000000000000 0 FUNC GLOBAL DEFAULT UND getopt_long@GLIBC_2.17 (2)
66: 0000000000000000 0 FUNC GLOBAL DEFAULT UND __fprintf_chk@GLIBC_2.17 (2)
67: 0000000000000000 0 FUNC GLOBAL DEFAULT UND strcmp@GLIBC_2.17 (2)
68: 0000000000000000 0 FUNC GLOBAL DEFAULT UND __ctype_b_loc@GLIBC_2.17 (2)
69: 0000000000000000 0 FUNC GLOBAL DEFAULT UND strtol@GLIBC_2.17 (2)
70: 0000000000000000 0 FUNC GLOBAL DEFAULT UND fread@GLIBC_2.17 (2)
71: 0000000000000000 0 FUNC GLOBAL DEFAULT UND ungetc@GLIBC_2.17 (2)
72: 0000000000000000 0 FUNC GLOBAL DEFAULT UND __ctype_get_mb_cur_max@GLIBC_2.17 (2)
73: 0000000000000000 0 FUNC GLOBAL DEFAULT UND strchr@GLIBC_2.17 (2)
74: 0000000000000000 0 FUNC GLOBAL DEFAULT UND rename@GLIBC_2.17 (2)
75: 0000000000000000 0 FUNC GLOBAL DEFAULT UND fwrite@GLIBC_2.17 (2)
76: 0000000000000000 0 FUNC GLOBAL DEFAULT UND clearerr@GLIBC_2.17 (2)
77: 0000000000000000 0 FUNC GLOBAL DEFAULT UND dcngettext@GLIBC_2.17 (2)
78: 0000000000000000 0 FUNC GLOBAL DEFAULT UND fflush@GLIBC_2.17 (2)
79: 0000000000000000 0 FUNC GLOBAL DEFAULT UND strcpy@GLIBC_2.17 (2)
80: 0000000000000000 0 FUNC GLOBAL DEFAULT UND clearerr_unlocked@GLIBC_2.17 (2)
81: 0000000000000000 0 FUNC GLOBAL DEFAULT UND __lxstat@GLIBC_2.17 (2)
82: 0000000000000000 0 FUNC GLOBAL DEFAULT UND memchr@GLIBC_2.17 (2)
83: 0000000000000000 0 FUNC GLOBAL DEFAULT UND isatty@GLIBC_2.17 (2)
84: 0000000000000000 0 NOTYPE WEAK DEFAULT UND _Jv_RegisterClasses
85: 0000000000000000 0 FUNC GLOBAL DEFAULT UND _obstack_newchunk@GLIBC_2.17 (2)
86: 0000000000000000 0 FUNC GLOBAL DEFAULT UND __fxstat@GLIBC_2.17 (2)
87: 0000000000000000 0 FUNC GLOBAL DEFAULT UND dcgettext@GLIBC_2.17 (2)
88: 0000000000000000 0 FUNC GLOBAL DEFAULT UND freecon
89: 0000000000000000 0 FUNC GLOBAL DEFAULT UND fputs_unlocked@GLIBC_2.17 (2)
90: 0000000000000000 0 FUNC GLOBAL DEFAULT UND strncpy@GLIBC_2.17 (2)
91: 0000000000000000 0 FUNC GLOBAL DEFAULT UND pclose@GLIBC_2.17 (2)
92: 0000000000000000 0 NOTYPE WEAK DEFAULT UND _ITM_registerTMCloneTable
93: 0000000000000000 0 FUNC GLOBAL DEFAULT UND towupper@GLIBC_2.17 (2)
94: 0000000000000000 0 FUNC GLOBAL DEFAULT UND iswprint@GLIBC_2.17 (2)
95: 0000000000000000 0 FUNC GLOBAL DEFAULT UND umask@GLIBC_2.17 (2)
96: 0000000000000000 0 FUNC GLOBAL DEFAULT UND getfscreatecon
97: 0000000000000000 0 FUNC GLOBAL DEFAULT UND __errno_location@GLIBC_2.17 (2)
98: 0000000000000000 0 FUNC GLOBAL DEFAULT UND getenv@GLIBC_2.17 (2)
99: 0000000000000000 0 FUNC GLOBAL DEFAULT UND __memmove_chk@GLIBC_2.17 (2)
100: 0000000000000000 0 FUNC GLOBAL DEFAULT UND unlink@GLIBC_2.17 (2)
101: 0000000000000000 0 FUNC GLOBAL DEFAULT UND fchown@GLIBC_2.17 (2)
102: 0000000000000000 0 FUNC GLOBAL DEFAULT UND towlower@GLIBC_2.17 (2)
103: 0000000000000000 0 FUNC GLOBAL DEFAULT UND __uflow@GLIBC_2.17 (2)
104: 0000000000000000 0 FUNC GLOBAL DEFAULT UND setlocale@GLIBC_2.17 (2)
105: 0000000000000000 0 FUNC GLOBAL DEFAULT UND ferror@GLIBC_2.17 (2)
106: 0000000000000000 0 FUNC GLOBAL DEFAULT UND wcrtomb@GLIBC_2.17 (2)
107: 00000000100306ac 0 NOTYPE GLOBAL DEFAULT 23 _edata
108: 00000000100397c8 0 NOTYPE GLOBAL DEFAULT 24 _end
109: 0000000010010360 0 FUNC GLOBAL DEFAULT UND free@GLIBC_2.17 (2)
110: 00000000100306ac 0 NOTYPE GLOBAL DEFAULT 24 __bss_start
111: 0000000010001dd0 0 FUNC GLOBAL DEFAULT [<localentry>: 8] 11 _init
112: 0000000010010370 0 FUNC GLOBAL DEFAULT [<localentry>: 8] 13 _fini

Histogram for `.gnu.hash' bucket list length (total of 3 buckets):
Length Number % of total Coverage
0 0 ( 0.0%)
1 1 ( 33.3%) 16.7%
2 1 ( 33.3%) 50.0%
3 1 ( 33.3%) 100.0%

Version symbols section '.gnu.version' contains 113 entries:
Addr: 00000000100011f6 Offset: 0x0011f6 Link: 5 (.dynsym)
000: 0 (*local*) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
004: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 0 (*local*)
008: 2 (GLIBC_2.17) 0 (*local*) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
00c: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
010: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
014: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
018: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 0 (*local*)
01c: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
020: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
024: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
028: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 0 (*local*) 2 (GLIBC_2.17)
02c: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
030: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
034: 0 (*local*) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
038: 2 (GLIBC_2.17) 0 (*local*) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
03c: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 0 (*local*)
040: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
044: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
048: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
04c: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
050: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
054: 0 (*local*) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
058: 0 (*local*) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
05c: 0 (*local*) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
060: 0 (*local*) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
064: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17)
068: 2 (GLIBC_2.17) 2 (GLIBC_2.17) 2 (GLIBC_2.17) 1 (*global*)
06c: 1 (*global*) 2 (GLIBC_2.17) 1 (*global*) 1 (*global*)
070: 1 (*global*)

Version needs section '.gnu.version_r' contains 1 entries:
Addr: 0x00000000100012d8 Offset: 0x0012d8 Link: 6 (.dynstr)
000000: Version: 1 File: libc.so.6 Cnt: 1
0x0010: Name: GLIBC_2.17 Flags: none Version: 2

Displaying notes found at file offset 0x00000284 with length 0x00000020:
Owner Data size Description
GNU 0x00000010 NT_GNU_ABI_TAG (ABI version tag)
OS: Linux, ABI: 2.6.32

Displaying notes found at file offset 0x000002a4 with length 0x00000024:
Owner Data size Description
GNU 0x00000014 NT_GNU_BUILD_ID (unique build ID bitstring)
Build ID: a6c7b5f6f5cf4174f94bc7568ca07cfd81ee4443
=================================================================================================

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