[Bug ld/31795] ld.bfd makes ELFs of type ET_EXEC for static PIEs when load address is non-0

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=31795

--- Comment #33 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to mintsuki from comment #32)
> (In reply to H.J. Lu from comment #31)
> > (In reply to mintsuki from comment #30)
> > > Basically, it tries to find a PHDR which contains the RELA section, and if
> > > it find it, it subtracts the PHDR's virtual address and adds its offset in
> > > order to find the offset of the RELA section inside the ELF file itself.
> > 
> > In glibc, we know it is a static PIE.  We relocate PT_DYNAMIC segment only 
> > if
> > it is ET_DYN.
> 
> So what is the issue? And in any case, it doesn't feel right to me to have

This is only after my patch:

https://patchwork.sourceware.org/project/glibc/list/?series=34373

Currently glibc relocates PT_DYNAMIC segment unconditionally.

> this behaviour in ld just to work around quirks of a specific ELF loader out
> of many.
> 
> If anything, it needs to be handled in glibc, and the behaviour of ld should
> be reverted to match gold and lld.
> 

The static PIE generated by ldd with non-zero load address won't work with
glibc before and after my glibc fix.  I will open an lld issue after glibc
is fixed.

-- 
You are receiving this mail because:
You are on the CC list for the bug.