[llvm-dev] lld/x86_64 linux elf invalid link_map

Carlo Kok via llvm-dev llvm-dev at lists.llvm.org
Tue Jun 7 12:54:12 PDT 2016

On 2016-06-07 20:28, Rafael EspĂ­ndola wrote:
> On 7 June 2016 at 03:18, Carlo Kok via llvm-dev <llvm-dev at lists.llvm.org> wrote:
>> I'm having a curious issue with LLD/x86_64 linux/elf (Ubuntu 14.04); Where
>> the l_addr of the link_map is invalid when linked with lld, but is fine with
>> gnu ld.
>> I'm using the libgc (boehm) code which when initializing reads the
>> DYNAMIC/DEBUG link_map data, and crashes because the l_addr field has value
>> out of readable memory. The strange this is that it happens only on some
>> linux systems even though they're the same ubuntu version.
>> My question is, what could possibly cause this, where can I start looking?
> Hard to tell just from the description. If you can shore the testcase,
> just pass --reproduce foo to ld.lld and it will create a cpio file
> that you can put somewhere and refer from a bugzilla

logged as https://llvm.org/bugs/show_bug.cgi?id=28040 (couldn't attach 
the cpio file, it's 5mb and it accepts up to 1mb). is there anything 
else i can provide?

Carlo Kok
RemObjects Software

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