Bug 1312489 - Wrong GOT offset used with GOT relocation
Summary: Wrong GOT offset used with GOT relocation
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: binutils
Version: 24
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Nick Clifton
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-02-26 21:24 UTC by H.J. Lu
Modified: 2017-08-08 13:04 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2017-08-08 13:04:43 UTC
Type: Bug


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Sourceware 19601 0 None None None 2016-02-26 21:24:37 UTC

Description H.J. Lu 2016-02-26 21:24:38 UTC
Since commit 02a866936de7e63ad4962ccba56c8cd05c231275 ld generates invalid GOT entries (less than 4 Byte in size) when processing a R_386_GOT32X relocation to a weak symbol during static linking.  This happens for example when statically linking a C++ program without using libpthread on Linux.

It has been fixed on 2.26 branch by

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=32875eb1f3b928dfe63c5752e8152a9dc09928f3

commit 32875eb1f3b928dfe63c5752e8152a9dc09928f3
Author: H.J. Lu <hjl.tools>
Date:   Wed Feb 10 19:33:52 2016 -0800

    Mask off the least significant bit in GOT offset
    
    The least significant bit in GOT offset is to record whether we have
    initialized the GOT entry in R_386_GOT32 processing.  We need to mask
    it off for R_386_GOT32X.
    
    	PR ld/19601
    	* elf32-i386.c (elf_i386_relocate_section): Mask off the least
    	significant bit in GOT offset for R_386_GOT32X.

Comment 1 Nick Clifton 2016-02-29 16:23:42 UTC
Patch checked in:

  binutils-2.26-14.fc25
  binutils-2.26-14.fc24

Comment 2 Fedora End Of Life 2017-07-25 20:15:30 UTC
This message is a reminder that Fedora 24 is nearing its end of life.
Approximately 2 (two) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 24. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '24'.

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Comment 3 Fedora End Of Life 2017-08-08 13:04:43 UTC
Fedora 24 changed to end-of-life (EOL) status on 2017-08-08. Fedora 24 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

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