Messages in this thread | | | Date | Sat, 20 Sep 2014 23:05:46 +0400 | From | Kirill Tkhai <> | Subject | Re: [PATCH 5/7] sched: Use rq->rd in sched_setaffinity() under RCU read lock |
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On 20.09.2014 22:59, Peter Zijlstra wrote: > On Sat, Sep 20, 2014 at 08:51:40PM +0400, Kirill Tkhai wrote: >> From: Kirill Tkhai <ktkhai@parallels.com> >> >> task_rq(p)->rd and task_rq(p)->rd->span may be used-after-free here. >> Probability of NULL pointer derefference isn't zero in this place. > > I don't see NULL derefs, just use-after-free. >
It's very paranod case :). Two pointers are here:
task_rq(p)->rd (somebody zeroed it "rd") ->span
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