* 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?
Thanks,
Ingo
--
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/
