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[Bug binutils/22741] New: objcopy segfault

From: kanglictf at gmail dot com
Subject: [Bug binutils/22741] New: objcopy segfault
Date: Wed, 24 Jan 2018 06:11:49 +0000


            Bug ID: 22741
           Summary: objcopy segfault
           Product: binutils
           Version: 2.31 (HEAD)
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: kanglictf at gmail dot com
  Target Milestone: ---

Created attachment 10758
  --> https://sourceware.org/bugzilla/attachment.cgi?id=10758&action=edit
input that cause objcopy to segfault

objcopy segfault on the given input files.

# ------------
# Cmdline: 
$ objcopy /tmp/objcopy_crash.input 
Segmentation fault

# ------------
# gdb output
Program received signal SIGSEGV, Segmentation fault.
0x00000000004ea2f9 in coff_mangle_symbols (bfd_ptr=0x7a92f0) at
843                         a->u.auxent.x_sym.x_tagndx.p->offset;
(gdb) where
#0  0x00000000004ea2f9 in coff_mangle_symbols (bfd_ptr=0x7a92f0) at
#1  0x00000000004d3c7d in coff_write_object_contents (abfd=0x7a92f0) at
#2  0x0000000000441c80 in bfd_close (abfd=0x7a92f0) at ../../bfd/opncls.c:731
#3  0x00000000004091cb in copy_file (input_filename=0x7fffffffe82a
"/tmp/objcopy_crash.input", output_filename=0x7a5f00 "/tmp/st2DszA7",
input_target=0x0, output_target=0x55aad7 "pei-i386", input_arch=0x0)
    at ../../binutils/objcopy.c:3530
#4  0x000000000040d017 in copy_main (argc=2, argv=0x7fffffffe5b8) at
#5  0x000000000040d363 in main (argc=2, argv=0x7fffffffe5b8) at

# ------------------------------
# Tested on the following two objcopy versions

# 1.
>From git://sourceware.org/git/binutils-gdb.git 
cloned on Jan 24, 2018
commit 0984958bd1d20245e4d42888a697b6015dc6172f

Ubuntu 14.04.5 LTS, 
$ uname -a
Linux 3.19.0-74-generic #82~14.04.1-Ubuntu SMP Fri Oct 21 15:43:47 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux

# 2
GNU objcopy (GNU Binutils for Ubuntu) 2.26.1
Ubuntu 16.04.3 LTS
Linux 4.4.0-101-generic #124-Ubuntu SMP Fri Nov 10 18:29:59 UTC 2017 x86_64
x86_64 x86_64 GNU/Linux

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