Messages in this thread | | | Date | Mon, 9 Jun 2014 14:29:56 -0400 | From | Steven Rostedt <> | Subject | Re: safety of *mutex_unlock() (Was: [BUG] signal: sighand unprotected when accessed by /proc) |
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On Mon, 9 Jun 2014 20:15:53 +0200 Oleg Nesterov <oleg@redhat.com> wrote:
> > That would indeed be a bad thing, as it could potentially lead to > > use-after-free bugs. Though one could argue that any code that resulted > > in use-after-free would be quite aggressive. But still... > > And once again, note that the normal mutex is already unsafe (unless I missed > something).
Is it unsafe?
This thread was started because of a bug we triggered in -rt, which ended up being a change specific to -rt that modified the way slub handled SLAB_DESTROY_BY_RCU. What else was wrong with it?
-- Steve
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