Messages in this thread | | | Subject | Re: [patch] PID namespace design bug, workaround | From | Nicholas Miell <> | Date | Fri, 02 Nov 2007 21:02:59 -0700 |
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On Fri, 2007-11-02 at 10:39 -0700, Linus Torvalds wrote: > > On Fri, 2 Nov 2007, Dave Hansen wrote: > > > > There are certainly more of these, but here is one In the futex > > userspace address, we install the current pid's vnr into a userspace > > address. > > Now, realistically, why not just say "you can't use these things across > namespaces"? Does anybody really care? After all, somebody who screws this > up only screws himself, not anybody else. > > Linus
Accessing the same robust futex from different PID namespaces on the same machine via a shared file mapping is logically equivalent to accessing the same robust futex from different machines via a shared filesystem and there's no reason to expect either operation to work correctly.
-- Nicholas Miell <nmiell@comcast.net>
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