Re: [testcase] perf: yet another fuzzer triggered crash
From: Vince Weaver
Date: Mon Jul 01 2013 - 11:07:38 EST
On Mon, 1 Jul 2013, Peter Zijlstra wrote:
> OK, so on my westmere it triggers that WARN in task_ctx_sched_out() a
> _lot_ (I removed the ONCE for easier debugging earlier -- still kinda
> stumped there).
>
> Then this thing causes an RCU stall and starts triggering NMI watchdog
> msgs.. so YAY! :-)
I'm glad it's not just me.
I'm in the process of kernel bisecting this, though all I can tell you so
far is 2.6.32 is unaffected by the bug but 3.2 and later are.
Vince
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