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[Bug binutils/25629] New: objcopy : SIGSEGV in filter_symbols ( objcopy.

From: fdgkhdkgh at gmail dot com
Subject: [Bug binutils/25629] New: objcopy : SIGSEGV in filter_symbols ( objcopy.c:1584 )
Date: Wed, 04 Mar 2020 14:11:13 +0000


            Bug ID: 25629
           Summary: objcopy : SIGSEGV in filter_symbols ( objcopy.c:1584 )
           Product: binutils
           Version: 2.35 (HEAD)
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: fdgkhdkgh at gmail dot com
  Target Milestone: ---

Created attachment 12345
  --> https://sourceware.org/bugzilla/attachment.cgi?id=12345&action=edit
file that reproduces this problem

binutils Version : HEAD
git clone git://sourceware.org/git/binutils-gdb.git

OS : ubuntu 18.04.3
kernel : gnu/linux 5.0.0-32-generic
processor : Intel(R) Core(TM) i5-8400 CPU @ 2.80GHz
compiler : gcc 7.4.0

Steps to Reproduce :
download the sample from attachment

objcopy  -I  binary  -O  pei-i386  --change-leading-char ./sample

gdb backtrace :

#0  __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:62
#1  0x000055555558bd2d in filter_symbols (symcount=<optimized out>,
isyms=<optimized out>, osyms=0x5555558ad910, obfd=0x5555558ad520,
    at objcopy.c:1584
#2  copy_object (ibfd=0x5555558ac3c0, obfd=<optimized out>,
input_arch=<optimized out>) at objcopy.c:3214
#3  0x000055555558e129 in copy_file (input_filename=0x7fffffff26c9 "./sample",
output_filename=0x7fffffff26d2 "./oo", input_target=<optimized out>, 
    output_target=<optimized out>, input_arch=0x0) at objcopy.c:3805
#4  0x0000555555588210 in copy_main (argv=<optimized out>, argc=<optimized
out>) at objcopy.c:5855
#5  main (argc=<optimized out>, argc@entry=0x8, argv=<optimized out>,
argv@entry=0x7fffffff2288) at objcopy.c:5981
#6  0x00007ffff7801b97 in __libc_start_main (main=0x5555555865c0 <main>,
argc=0x8, argv=0x7fffffff2288, init=<optimized out>, fini=<optimized out>, 
    rtld_fini=<optimized out>, stack_end=0x7fffffff2278) at
#7  0x00005555555890ba in _start ()


Program received signal SIGSEGV, Segmentation fault.

RAX: 0x0 
RBX: 0x5555558ac558 --> 0x5555558ac3c0 --> 0x5555558ae740 ("./sample")
RCX: 0x0 
RDX: 0x0 
RSI: 0xbd0 
RDI: 0x0 
RBP: 0x5555558ac5e8 ("_binary___sample_start")
RSP: 0x7fffffff1ea8 --> 0x55555558bd2d (<copy_object+4093>:     mov    rdi,r12)
RIP: 0x7ffff796e5a1 (<__strlen_avx2+17>:        vpcmpeqb ymm1,ymm0,YMMWORD PTR
R8 : 0x0 
R9 : 0x0 
R10: 0x5555558aa010 --> 0x1 
R11: 0x0 
R12: 0x5555558ac5e8 ("_binary___sample_start")
R13: 0x7fffffff26d2 --> 0x554c43006f6f2f2e ('./oo')
R14: 0x0 
R15: 0x5555558ad520 --> 0x5555558ad670 --> 0x7f006f6f2f2e
EFLAGS: 0x10283 (CARRY parity adjust zero SIGN trap INTERRUPT direction
   0x7ffff796e599 <__strlen_avx2+9>:    and    ecx,0x3f
   0x7ffff796e59c <__strlen_avx2+12>:   cmp    ecx,0x20
   0x7ffff796e59f <__strlen_avx2+15>:   ja     0x7ffff796e5c0
=> 0x7ffff796e5a1 <__strlen_avx2+17>:   vpcmpeqb ymm1,ymm0,YMMWORD PTR [rdi]
   0x7ffff796e5a5 <__strlen_avx2+21>:   vpmovmskb eax,ymm1
   0x7ffff796e5a9 <__strlen_avx2+25>:   test   eax,eax
   0x7ffff796e5ab <__strlen_avx2+27>:   jne    0x7ffff796e690
   0x7ffff796e5b1 <__strlen_avx2+33>:   add    rdi,0x20
0000| 0x7fffffff1ea8 --> 0x55555558bd2d (<copy_object+4093>:    mov    rdi,r12)
0008| 0x7fffffff1eb0 --> 0x5555558ad8c0 --> 0x5555558ac558 --> 0x5555558ac3c0
--> 0x5555558ae740 ("./sample")
0016| 0x7fffffff1eb8 --> 0x20582eae00000002 
0024| 0x7fffffff1ec0 --> 0x0 
0032| 0x7fffffff1ec8 --> 0x5555558ae8f8 --> 0x55555565552e --> 0x617461642e
0040| 0x7fffffff1ed0 --> 0x5555558ac3c0 --> 0x5555558ae740 ("./sample")
0048| 0x7fffffff1ed8 --> 0x5555558ad520 --> 0x5555558ad670 --> 0x7f006f6f2f2e 
0056| 0x7fffffff1ee0 --> 0x5555558ad8d8 --> 0x0 
Legend: code, data, rodata, value
Stopped reason: SIGSEGV
__strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:62

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