[Bug binutils/14444] New: objdump fails on .ko with -gdwarf-4

[viriketo at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14444

             Bug #: 14444
           Summary: objdump fails on .ko with -gdwarf-4
           Product: binutils
           Version: 2.23 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: binutils
        AssignedTo: address@hidden
        ReportedBy: address@hidden
    Classification: Unclassified
              Host: linux-x86_64
            Target: linux-x86_64
             Build: linux-x86_64


Created attachment 6568
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6568
kernel object I can't use objdump/gdb with

I've a 'btrfs.ko' kernel module that loads fine, but objdump can't open it at
all. Linux loads it perfectly.

binutils 2.21.1a objdump says: File format not recognized
binutils 2.22.90 objdump says: Bad value
elfutils objdump can read it fine, but has very few options.
binutils readelf can read it fine.

With gdb 7.4.1 it says: "btrfs.ko": not in executable format: Bad value

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