Messages in this thread | | | Date | Thu, 8 May 2014 09:38:51 +0400 | From | Cyrill Gorcunov <> | Subject | Re: perf_fuzzer crash on pentium 4 |
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On Wed, May 07, 2014 at 10:00:50PM -0400, Don Zickus wrote: > > > > If i'm right (btw it's possible to use addr2line helper?) then hwc->config > > is corrupted and p4_config_get_bind returned nil simply because proper event > > was not found. And I don't understand how it could happen because before > > configuration gets written into hwc->config it's validated once obtained > > from user-space as a raw event. Weird... > > I think my commit 13beacee817d27a40ffc6f065ea0042685611dd5 explains this > corruption. Though I have to admit I haven't looked through the problem > very closely yet.
nope ;) without the fix above we could (and we did) simply misconfigure counter but never get access out of array bound. anyway, Vince confirm the fix from PeterZ healed the problem.
> IOW my lazy fix in that commit doesn't cover fuzzers and the real problem > in p4_pmu_schedule_events. :-)
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