[Bug binutils/25651] New: objcopy : SIGSEGV in copy_object ( objcopy.c:3392 )

[fdgkhdkgh at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25651

            Bug ID: 25651
           Summary: objcopy : SIGSEGV in copy_object ( objcopy.c:3392 )
           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 12365
  --> https://sourceware.org/bugzilla/attachment.cgi?id=12365&action=edit
file that reproduces this problem

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 -j  .debug   --debugging  --pad-to  1   ./sample


gdb backtrace :

gdb-peda$ bt
#0  0x000055555558d276 in copy_object (ibfd=<optimized out>, obfd=<optimized
out>, input_arch=<optimized out>) at objcopy.c:3392
#1  0x000055555558e8c9 in copy_file (input_filename=0x7fffffff2a3d "./sample",
    output_filename=0x7fffffff2a46 "./objcopy_output", input_target=<optimized
out>, output_target=<optimized out>,
    input_arch=0x0) at objcopy.c:3831
#2  0x0000555555588900 in copy_main (argv=<optimized out>, argc=<optimized
out>) at objcopy.c:5890
#3  main (argc=<optimized out>, argc@entry=0x8, argv=<optimized out>,
argv@entry=0x7fffffff2708) at objcopy.c:6016
#4  0x00007ffff7801b97 in __libc_start_main (main=0x555555586cb0 <main>,
argc=0x8, argv=0x7fffffff2708, init=<optimized out>,
    fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffff26f8)
at ../csu/libc-start.c:310
#5  0x00005555555897aa in _start ()

------

gdb report

[----------------------------------registers-----------------------------------]
RAX: 0x0
RBX: 0x0
RCX: 0x0
RDX: 0x0
RSI: 0x5555558ac010 --> 0x10000000000
RDI: 0x0
RBP: 0x0
RSP: 0x7fffffff2330 --> 0x0
RIP: 0x55555558d276 (<copy_object+7702>:        mov    rbp,QWORD PTR [rax])
R8 : 0x0
R9 : 0x0
R10: 0x0
R11: 0x2e ('.')
R12: 0x0
R13: 0x5555558afbf0 --> 0x0
R14: 0x0
R15: 0x5555558af560 --> 0x5555558af690 ("./objcopy_output")
EFLAGS: 0x10202 (carry parity adjust zero sign trap INTERRUPT direction
overflow)
[-------------------------------------code-------------------------------------]
   0x55555558d26a <copy_object+7690>:   mov    r14,r9
   0x55555558d26d <copy_object+7693>:   mov    QWORD PTR [rsp+0x8],rax
   0x55555558d272 <copy_object+7698>:   mov    rax,QWORD PTR [rsp]
=> 0x55555558d276 <copy_object+7702>:   mov    rbp,QWORD PTR [rax]
   0x55555558d279 <copy_object+7705>:   test   rbp,rbp
   0x55555558d27c <copy_object+7708>:   jne    0x55555558d2aa
<copy_object+7754>
   0x55555558d27e <copy_object+7710>:   add    QWORD PTR [rsp],0x8
   0x55555558d283 <copy_object+7715>:   add    r14,0x8
[------------------------------------stack-------------------------------------]
0000| 0x7fffffff2330 --> 0x0
0008| 0x7fffffff2338 --> 0x10
0016| 0x7fffffff2340 --> 0x5555558ae400 --> 0x5555558b0780 ("./sample")
0024| 0x7fffffff2348 --> 0x5555558a2240 --> 0x555555655f06 -->
0x492a002a444e552a ('*UND*')
0032| 0x7fffffff2350 --> 0x5555558af560 --> 0x5555558af690 ("./objcopy_output")
0040| 0x7fffffff2358 --> 0x5555558af8e8 --> 0x0
0048| 0x7fffffff2360 --> 0x5555558af970 --> 0x0
0056| 0x7fffffff2368 --> 0x5555558ae400 --> 0x5555558b0780 ("./sample")
[------------------------------------------------------------------------------]
Legend: code, data, rodata, value
Stopped reason: SIGSEGV
0x000055555558d276 in copy_object (ibfd=<optimized out>, obfd=<optimized out>,
input_arch=<optimized out>) at objcopy.c:3392
3392              if (gaps[i] != 0)

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