On Mon, Sep 29, 2014 at 02:07:22PM +0200, Ingo Molnar wrote: > > * Peter Zijlstra <[email protected]> wrote: > > > Subject: perf: Fix perf bug in fork() > > > > Oleg noticed that a cleanup by Sylvain actually uncovered a bug; by > > calling perf_event_free_task() when failing sched_fork() we will not yet > > have done the memset() on ->perf_event_ctxp[] and will therefore try and > > 'free' the inherited contexts, which are still in use by the parent > > process. This is bad.. > > > > Suggested-by: Oleg Nesterov <[email protected]> > > Reported-by: Oleg Nesterov <[email protected]> > > Reported-by: Sylvain 'ythier' Hitier <[email protected]> > > Signed-off-by: Peter Zijlstra (Intel) <[email protected]> > > Could this fix a couple of fuzzer triggered perf crashes perhaps?
It could indeed I suppose.. you never know what paths those fuzzers manage to hit. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
