Messages in this thread | | | From | Kees Cook <> | Subject | Re: [PATCH 1/2] fs/exec: allow to unshare a time namespace on vfork+exec | Date | Wed, 15 Jun 2022 08:01:48 -0700 |
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On Sun, 12 Jun 2022 23:07:22 -0700, Andrei Vagin wrote: > Right now, a new process can't be forked in another time namespace > if it shares mm with its parent. It is prohibited, because each time > namespace has its own vvar page that is mapped into a process address > space. > > When a process calls exec, it gets a new mm and so it could be "legal" > to switch time namespace in that case. This was not implemented and > now if we want to do this, we need to add another clone flag to not > break backward compatibility. > > [...]
Applied to for-next/execve, thanks!
[1/2] fs/exec: allow to unshare a time namespace on vfork+exec https://git.kernel.org/kees/c/133e2d3e81de [2/2] testing/timens: add a test for vfork+exit https://git.kernel.org/kees/c/6342140db660
-- Kees Cook
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