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[Bug binutils/20393] New: .rela.plt info is pointing to .got.plt while i
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From: |
arunishad at gmail dot com |
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Subject: |
[Bug binutils/20393] New: .rela.plt info is pointing to .got.plt while it should point .plt (X86_64) |
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Date: |
Thu, 21 Jul 2016 11:00:50 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=20393
Bug ID: 20393
Summary: .rela.plt info is pointing to .got.plt while it should
point .plt (X86_64)
Product: binutils
Version: 2.26
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: arunishad at gmail dot com
Target Milestone: ---
Created attachment 9400
--> https://sourceware.org/bugzilla/attachment.cgi?id=9400&action=edit
Sample application on X86_64
Ubuntu 16.04
In the recent version off gcc compiled application i see .rela.plt info index
is [12] .plt index but in 5.4 its pointing to the [24] .got.plt.
readelf:
---------------------------------------------------------------------------
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: Advanced Micro Devices X86-64
Version: 0x1
Entry point address: 0x4004c0
Start of program headers: 64 (bytes into file)
Start of section headers: 6776 (bytes into file)
Flags: 0x0
Size of this header: 64 (bytes)
Size of program headers: 56 (bytes)
Number of program headers: 9
Size of section headers: 64 (bytes)
Number of section headers: 31
Section header string table index: 28
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 0000000000400238 00000238
000000000000001c 0000000000000000 A 0 0 1
[ 2] .note.ABI-tag NOTE 0000000000400254 00000254
0000000000000020 0000000000000000 A 0 0 4
[ 3] .note.gnu.build-i NOTE 0000000000400274 00000274
0000000000000024 0000000000000000 A 0 0 4
[ 4] .gnu.hash GNU_HASH 0000000000400298 00000298
000000000000001c 0000000000000000 A 5 0 8
[ 5] .dynsym DYNSYM 00000000004002b8 000002b8
0000000000000090 0000000000000018 A 6 1 8
[ 6] .dynstr STRTAB 0000000000400348 00000348
0000000000000049 0000000000000000 A 0 0 1
[ 7] .gnu.version VERSYM 0000000000400392 00000392
000000000000000c 0000000000000002 A 5 0 2
[ 8] .gnu.version_r VERNEED 00000000004003a0 000003a0
0000000000000020 0000000000000000 A 6 1 8
[ 9] .rela.dyn RELA 00000000004003c0 000003c0
0000000000000018 0000000000000018 A 5 0 8
---> [10] .rela.plt RELA 00000000004003d8 000003d8
0000000000000060 0000000000000018 AI 5 24 8
[11] .init PROGBITS 0000000000400438 00000438
000000000000001a 0000000000000000 AX 0 0 4
[12] .plt PROGBITS 0000000000400460 00000460
0000000000000050 0000000000000010 AX 0 0 16
[13] .plt.got PROGBITS 00000000004004b0 000004b0
0000000000000008 0000000000000000 AX 0 0 8
[14] .text PROGBITS 00000000004004c0 000004c0
00000000000001d2 0000000000000000 AX 0 0 16
[15] .fini PROGBITS 0000000000400694 00000694
0000000000000009 0000000000000000 AX 0 0 4
[16] .rodata PROGBITS 00000000004006a0 000006a0
0000000000000039 0000000000000000 A 0 0 4
[17] .eh_frame_hdr PROGBITS 00000000004006dc 000006dc
0000000000000044 0000000000000000 A 0 0 4
[18] .eh_frame PROGBITS 0000000000400720 00000720
0000000000000134 0000000000000000 A 0 0 8
[19] .init_array INIT_ARRAY 0000000000600e00 00000e00
0000000000000010 0000000000000000 WA 0 0 8
[20] .fini_array FINI_ARRAY 0000000000600e10 00000e10
0000000000000010 0000000000000000 WA 0 0 8
[21] .jcr PROGBITS 0000000000600e20 00000e20
0000000000000008 0000000000000000 WA 0 0 8
[22] .dynamic DYNAMIC 0000000000600e28 00000e28
00000000000001d0 0000000000000010 WA 6 0 8
[23] .got PROGBITS 0000000000600ff8 00000ff8
0000000000000008 0000000000000008 WA 0 0 8
--->[24] .got.plt PROGBITS 0000000000601000 00001000
0000000000000038 0000000000000008 WA 0 0 8
[25] .data PROGBITS 0000000000601038 00001038
0000000000000010 0000000000000000 WA 0 0 8
[26] .bss NOBITS 0000000000601048 00001048
0000000000000008 0000000000000000 WA 0 0 1
[27] .comment PROGBITS 0000000000000000 00001048
0000000000000034 0000000000000001 MS 0 0 1
[28] .shstrtab STRTAB 0000000000000000 00001968
000000000000010c 0000000000000000 0 0 1
[29] .symtab SYMTAB 0000000000000000 00001080
00000000000006a8 0000000000000018 30 49 8
[30] .strtab STRTAB 0000000000000000 00001728
0000000000000240 0000000000000000 0 0 1
Could you please tell us why this has been changes ?
It doesnt crash but for readelf point of view it looks buggy.
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- [Bug binutils/20393] New: .rela.plt info is pointing to .got.plt while it should point .plt (X86_64),
arunishad at gmail dot com <=
- [Bug binutils/20393] .rela.plt info is pointing to .got.plt while it should point .plt (X86_64), arunishad at gmail dot com, 2016/07/21
- [Bug binutils/20393] .rela.plt info is pointing to .got.plt while it should point .plt (X86_64), address@hidden, 2016/07/21
- [Bug binutils/20393] .rela.plt info is pointing to .got.plt while it should point .plt (X86_64), hjl.tools at gmail dot com, 2016/07/21
- [Bug binutils/20393] .rela.plt info is pointing to .got.plt while it should point .plt (X86_64), amitgoel25aug at gmail dot com, 2016/07/21
- [Bug binutils/20393] .rela.plt info is pointing to .got.plt while it should point .plt (X86_64), hjl.tools at gmail dot com, 2016/07/21