http://sourceware.org/bugzilla/show_bug.cgi?id=12467
Summary: libbfd cant recognize valid ELF file
Product: binutils
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: binutils
AssignedTo: unassig...@sources.redhat.com
ReportedBy: anton.koch...@gmail.com
Created attachment 5227
--> http://sourceware.org/bugzilla/attachment.cgi?id=5227
Binary "dream" file
objdump cant parse valid elf file "dream", which is available
herehttp://www.stripedgazelle.org/cgi-bin/wiki_joey/dream20101104.tar.gz
objdump: file is not valid elf file
but readelf succesfully do this:
ELF Header:
Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
Class: ELF32
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: EXEC (Executable file)
Machine: Intel 80386
Version: 0x1
Entry point address: 0x8048e28
Start of program headers: 52 (bytes into file)
Start of section headers: 180 (bytes into file)
Flags: 0x0
Size of this header: 52 (bytes)
Size of program headers: 32 (bytes)
Number of program headers: 4
Size of section headers: 40 (bytes)
Number of section headers: 0 (0)
Section header string table index: 0
There are no sections in this file.
There are no sections in this file.
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
INTERP 0x0001d6 0x080481d6 0x00000000 0x00013 0x00013 R 0x1000
[Requesting program interpreter: /lib/ld-linux.so.2]
DYNAMIC 0x0000fc 0x080480fc 0x00000000 0x00048 0x00048 RW 0x1000
LOAD 0x000000 0x08048000 0x00000000 0x07a8b 0x07a8b R E 0x1000
LOAD 0x007a8b 0x0804fa8b 0x00000000 0x01ef5 0x1f7e5a1 RWE 0x1000
Dynamic section at offset 0xfc contains 9 entries:
Tag Type Name/Value
0x00000001 (NEEDED) Shared library: [libdl.so.2]
0x00000004 (HASH) 0x80480dc
0x00000005 (STRTAB) 0x80481ac
0x00000006 (SYMTAB) 0x8048144
0x0000000a (STRSZ) 42 (bytes)
0x0000000b (SYMENT) 16 (bytes)
0x00000011 (REL) 0x8048194
0x00000012 (RELSZ) 24 (bytes)
0x00000013 (RELENT) 8 (bytes)
There are no relocations in this file.
There are no unwind sections in this file.
Histogram for bucket list length (total of 1 buckets):
Length Number % of total Coverage
0 1 (100.0%)
No version information found in this file.
Also scanelf write something:
TYPE PAX PERM ENDIAN STK/REL/PTL TEXTREL RPATH BIND FILE
ET_EXEC PeMRxS 0755 LE --- --- RWX - - LAZY dream
P.S. This bug was created from understanding another bug with paxctl from
grsecurity from gentoo: https://bugs.gentoo.org/show_bug.cgi?id=353731 .
difference between paxctl (dont recognize "dream" ) and chpax (recignize
"dream")
Attached "dream" binary and source of it's elf.scm (describe "dream" elf file
format)
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