Bug 22232 - NULL pointer dereference in load_specific_debug_section (objdump.c)
Summary: NULL pointer dereference in load_specific_debug_section (objdump.c)
Status: RESOLVED FIXED
Alias: None
Product: binutils
Classification: Unclassified
Component: binutils (show other bugs)
Version: 2.30
: P2 normal
Target Milestone: ---
Assignee: Alan Modra
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-10-01 08:23 UTC by Agostino Sarubbo
Modified: 2017-10-01 12:16 UTC (History)
0 users

See Also:
Host:
Target:
Build:
Last reconfirmed: 2017-10-01 00:00:00

Attachments
stacktrace (557 bytes, text/plain)
2017-10-01 08:23 UTC, Agostino Sarubbo 		Details
testcase (3.73 KB, application/x-executable)
2017-10-01 08:23 UTC, Agostino Sarubbo 		Details
View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Agostino Sarubbo 2017-10-01 08:23:22 UTC 
Created attachment 10495 [details]
stacktrace

On 2.29.51.20171001:

#objdump -g -D -F -S --file-start-context -l -R -s -W -G -T --special-syms -x $FILE
Comment 1 Agostino Sarubbo 2017-10-01 08:23:45 UTC 
Created attachment 10496 [details]
testcase
Comment 2 Alan Modra 2017-10-01 10:39:49 UTC 
Bug in a recent patch of mine.
Comment 3 Sourceware Commits 2017-10-01 11:13:10 UTC 
The master branch has been updated by Alan Modra <amodra@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=bfec0f11eadd7ed3597bc9b550a5595421a4cb31

commit bfec0f11eadd7ed3597bc9b550a5595421a4cb31
Author: Alan Modra <amodra@gmail.com>
Date:   Sun Oct 1 21:40:23 2017 +1030

    PR22232, NULL pointer dereference in load_specific_debug_section
    
    	PR 22232
    	PR 22230
    	* objdump.c (load_specific_debug_section): Introduce a temp to
    	stop bfd_get_full_section_contents NULLing out section->start.
Comment 4 Alan Modra 2017-10-01 12:16:57 UTC 
Fixed.