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From: Vince Weaver <vincent.weaver@maine.edu>
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Date: Tue, 1 May 2018 15:59:31 -0400 (EDT)
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To: Josh Poimboeuf <jpoimboe@redhat.com>
cc: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@kernel.org>,
        linux-kernel@vger.kernel.org,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Andy Lutomirski <luto@kernel.org>
Subject: Re: perf: fuzzer causes stack going in wrong direction warnings
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On Tue, 1 May 2018, Josh Poimboeuf wrote:

> Can you try the following patch?

I applied the patch, but the warnings don't really look that different.

[   62.220322] WARNING: stack recursion on stack type 4
[   62.220326] WARNING: can't dereference registers at 000000009ca2e86d for ip swapgs_restore_regs_and_return_to_usermode+0x79/0x87
[  367.597013] WARNING: stack going in the wrong direction? ip=native_sched_clock+0x9/0x90

Vince