linux-kernel - Re: kvm guests crash when running "perf kvm top"

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Message-ID: <aAo445Nzi5DuAQAR@google.com>
Date: Thu, 24 Apr 2025 06:13:07 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Dapeng Mi <dapeng1.mi@...ux.intel.com>
Cc: Seth Forshee <sforshee@...nel.org>, Peter Zijlstra <peterz@...radead.org>, 
	Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Thomas Gleixner <tglx@...utronix.de>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, Paolo Bonzini <pbonzini@...hat.com>, x86@...nel.org, 
	linux-perf-users@...r.kernel.org, kvm@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: kvm guests crash when running "perf kvm top"

On Thu, Apr 24, 2025, Dapeng Mi wrote:
> Is the command "perf kvm top" executed in host or guest when you see guest
> crash? Is it easy to be reproduced? Could you please provide the detailed
> steps to reproduce the issue with 6.15-rc1 kernel?

Host.  I already have a fix, I'll get it posted today.

https://lore.kernel.org/all/Z_aovIbwdKIIBMuq@google.com