binutils-2.18's objdump seems to segfault for all
"-m arm -b binary -D" input.
Trivial example.
objdump-2.16.1 -m arm -b binary a.out -D
| a.out: file format binary
|
| Disassembly of section .data:
|
| 0000000000000000 <.data>:
| 0: ea000000 b 0x8
| 4: e1a00000 nop (mov r0,r0)
| 8: e3a00001 mov r0, #1 ; 0x1
| c: e0800002 add r0, r0, r2
objdump-2.18 -m arm -b binary a.out -D
<segfault>
(gdb) Program received signal SIGSEGV, Segmentation fault.
0x00007f79a3cb2ebe in print_insn (pc=0, info=0x7fffac900860, little=1)
at
/var/tmp/portage/sys-devel/binutils-2.18-r3/work/binutils-2.18/opcodes/arm-
dis.c:3991
3991
/var/tmp/portage/sys-devel/binutils-2.18-r3/work/binutils-2.18/opcodes/arm-
dis.c:
No such file or directory.
in
/var/tmp/portage/sys-devel/binutils-2.18-r3/work/binutils-2.18/opcodes/arm-dis.c
(gdb) bt
#0 0x00007f79a3cb2ebe in print_insn (pc=0, info=0x7fffac900860,
little=1)
at
/var/tmp/portage/sys-devel/binutils-2.18-r3/work/binutils-2.18/opcodes/arm-
dis.c:3991
#1 0x0000000000408365 in disassemble_section (abfd=0x6479a0,
section=0x649310, info=<value optimized out>)
at
/var/tmp/portage/sys-devel/binutils-2.18-r3/work/binutils-2.18/binutils/
objdump.c:1472
#2 0x00007f79a3308dce in bfd_map_over_sections (abfd=0x6479a0,
operation=0x4079a0 <disassemble_section>, user_storage=0x7fffac900860)
at
/var/tmp/portage/sys-devel/binutils-2.18-r3/work/binutils-2.18/bfd/
section.c:1226
#3 0x0000000000405f46 in disassemble_data (abfd=0x6479a0) at
/var/tmp/portage/sys-devel/binutils-2.18-r3/work/binutils-2.18/binutils/
objdump.c:2014
#4 0x0000000000406768 in dump_bfd (abfd=0x6479a0) at
/var/tmp/portage/sys-devel/binutils-2.18-r3/work/binutils-2.18/binutils/
objdump.c:2896
#5 0x0000000000406ba8 in display_bfd (abfd=0x6479a0) at
/var/tmp/portage/sys-devel/binutils-2.18-r3/work/binutils-2.18/binutils/
objdump.c:2966
#6 0x0000000000406d58 in display_file (filename=0x7fffac900ec5 "a.out",
target=0x7fffac900eb7 "binary")
at
/var/tmp/portage/sys-devel/binutils-2.18-r3/work/binutils-2.18/binutils/
objdump.c:3027
#7 0x000000000040739d in main (argc=7, argv=0x7fffac900b48)
at
/var/tmp/portage/sys-devel/binutils-2.18-r3/work/binutils-2.18/binutils/
objdump.c:3266
(gdb) print info
$1 = (struct disassemble_info *) 0x7fffac900860
(gdb) print *info
$2 = {fprintf_func = 0x4092a0 <objdump_sprintf>, stream =
0x7fffac9007b0, application_data = 0x7fffac900950, flavour =
bfd_target_unknown_flavour,
arch = bfd_arch_arm, mach = 0, endian = BFD_ENDIAN_UNKNOWN, insn_sets
= 0x0, section = 0x649310, symbols = 0x0, num_symbols = 0,
symtab = 0x649d40, symtab_pos = -1, symtab_size = 0, flags = 0,
private_data = 0x0, read_memory_func = 0x7f79a3ca83f0
<buffer_read_memory>,
memory_error_func = 0x7f79a3ca8340 <perror_memory>, print_address_func
= 0x405160 <objdump_print_address>,
symbol_at_address_func = 0x4043e0 <objdump_symbol_at_address>,
symbol_is_valid = 0x7f79a3cae940 <arm_symbol_is_valid>, buffer =
0x649d60 "",
buffer_vma = 0, buffer_length = 16, bytes_per_line = 0,
bytes_per_chunk = 0, display_endian = BFD_ENDIAN_UNKNOWN,
octets_per_byte = 1,
skip_zeroes = 8, skip_zeroes_at_end = 3, disassembler_needs_relocs =
1, insn_info_valid = 0 '\0', branch_delay_insns = 0 '\0', data_size = 0
'\0',
insn_type = dis_noninsn, target = 0, target2 = 0, disassembler_options
= 0x0}
(gdb) disassemble 0x00007f79a3cb2eb0 0x00007f79a3cb2ec0
Dump of assembler code from 0x7f79a3cb2eb0 to 0x7f79a3cb2ec0:
0x00007f79a3cb2eb0 <print_insn+160>: add %cl,-0x75(%rcx)
0x00007f79a3cb2eb3 <print_insn+163>: rex.WR and $0x50,%al
0x00007f79a3cb2eb6 <print_insn+166>: test %rcx,%rcx
0x00007f79a3cb2eb9 <print_insn+169>: je 0x7f79a3cb2ecf
<print_insn+191>
0x00007f79a3cb2ebb <print_insn+171>: mov (%rcx),%rax
0x00007f79a3cb2ebe <print_insn+174>: mov (%rax),%rax
End of assembler dump.
(gdb) info registers
rax 0x0 0
rbx 0x0 0
rcx 0x649d40 6593856
rdx 0x1 1
rsi 0x7fffac900860 140736088508512
rdi 0x0 0
rbp 0x3 0x3
rsp 0x7fffac900580 0x7fffac900580
r8 0x1 1
r9 0x1 1
r10 0x7f79a48c66f0 140160428435184
r11 0x0 0
r12 0x7fffac900860 140736088508512
r13 0x7fffac900860 140736088508512
r14 0x4079a0 4225440
r15 0x0 0
rip 0x7f79a3cb2ebe 0x7f79a3cb2ebe <print_insn+174>
eflags 0x10202 [ IF RF ]
cs 0x33 51
ss 0x2b 43
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0
fctrl 0x37f 895
fstat 0x0 0
ftag 0xffff 65535
fiseg 0x0 0
fioff 0x0 0
foseg 0x0 0
fooff 0x0 0
fop 0x0 0
mxcsr 0x1f80 [ IM DM ZM OM UM PM ]
--
Summary: binutils-2.18's objdump seems to segfault for all "-m
arm -b binary -D" input.
Product: binutils
Version: 2.18
Status: NEW
Severity: normal
Priority: P2
Component: binutils
AssignedTo: unassigned at sources dot redhat dot com
ReportedBy: vrilehen at googlemail dot com
CC: bug-binutils at gnu dot org
GCC host triplet: x86_64-linux-gnu
GCC target triplet: arm-linux-gnu
http://sourceware.org/bugzilla/show_bug.cgi?id=7004
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