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From: "adhemerval.zanella at linaro dot org"
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/30186] RTLD_DEEPBIND interacts badly with
 LD_PRELOAD
Date: Wed, 22 Mar 2023 11:57:36 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D30186

--- Comment #9 from Adhemerval Zanella <adhemerval.zanella at linaro dot or=
g> ---
(In reply to Matthew Parkinson from comment #8)
> > This might work, the hook requires a global load and branch but it shou=
ld be=20
> > a predictable branch and performance should be ok.  I would require to =
add
> > additional hooks on every malloc function, adding another configuration=
 layer
> > which is an extra complexity for malloc interposition (which I am not v=
ery
> > found on).
>=20
> I agree the complexity is not nice.=20=20
>=20=20
> > You might ask what other maintainers think about this approach,
>=20
> Should I email libc-alpha to achieve this?

Yes please, I would like to hear from other maintainers if this approach is
sound and if I am not missing anything corner spot.

>=20
> > I personally
> > still think we should properly add preload option to have a more generic
> > fix to fix symbol interpostion with RTLD_DEEPBIND for all possible symb=
ols
> > and not a ad-hoc fix for malloc.
>=20
> This is not something I understand well enough to contribute to, so I am
> just trying to understand if there is something I can do, or if I need to
> wait for a solution.
>=20
> Thanks

--=20
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