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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/29115] vfork()-based posix_spawn() has more failure modes
 than fork()-based one
Date: Mon, 02 May 2022 20:43:08 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29115

--- Comment #6 from Florian Weimer <fweimer at redhat dot com> ---
CLONE_NEWTIME is as specified today fundamentally incompatible with real vf=
ork
and the vDSO. It just does not work. Entering the new namespace requires a =
new
vDSO data mapping, and that conflicts with vfork using the same address spa=
ce.

CLONE_NEWTIME should have been specified to apply only after execve (which
remaps the vDSO anyway), but it it's what we've got.

--=20
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