On Thu, 2007-03-08 at 15:39 +0100, Johannes Berg wrote:
> Now, I don't know what gcc for ia64 does and I don't have a cross
> compiler to check, but on powerpc it does this.
As expected, the same happens on x86_64 (thanks to Michael Wu for the
debug dump):
<1><e13>: Abbrev Number: 17 (DW_TAG_structure_type)
DW_AT_sibling : <e4c>
DW_AT_name : (indirect string, offset: 0x33d): iw_event
DW_AT_byte_size : 24
DW_AT_decl_file : 100
DW_AT_decl_line : 1049
<2><e20>: Abbrev Number: 18 (DW_TAG_member)
DW_AT_name : len
DW_AT_decl_file : 100
DW_AT_decl_line : 1050
DW_AT_type : <58b>
DW_AT_data_member_location: 2 byte block: 23 0 (DW_OP_plus_uconst: 0)
<2><e2f>: Abbrev Number: 18 (DW_TAG_member)
DW_AT_name : cmd
DW_AT_decl_file : 100
DW_AT_decl_line : 1051
DW_AT_type : <58b>
DW_AT_data_member_location: 2 byte block: 23 2 (DW_OP_plus_uconst: 2)
<2><e3e>: Abbrev Number: 18 (DW_TAG_member)
DW_AT_name : u
DW_AT_decl_file : 100
DW_AT_decl_line : 1052
DW_AT_type : <9bf>
DW_AT_data_member_location: 2 byte block: 23 8 (DW_OP_plus_uconst: 8)
Hence, on those machines 32-bit userspace is also broken and we have the
information leak too.
johannes
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