linux-kernel - Re: 4.5.0+ panic when setup loop device

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Date:	Thu, 17 Mar 2016 10:56:44 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Xiong Zhou <jencce.kernel@...il.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>, Borislav Petkov <bp@...en8.de>,
	Andreas Herrmann <aherrmann@...e.com>
Subject: Re: 4.5.0+ panic when setup loop device

On Thu, Mar 17, 2016 at 10:52:20AM +0100, Peter Zijlstra wrote:
> Mar 17 17:34:30 myhost kernel: smpboot: CPU0: AMD Opteron(TM) Processor 6274 (family: 0x15, model: 0x1, stepping: 0x2)
> Mar 17 17:34:30 myhost kernel: Performance Events: Fam15h core perfctr, Broken BIOS detected, complain to your hardware vendor.
> Mar 17 17:34:30 myhost kernel: [Firmware Bug]: the BIOS has corrupted hw-PMU resources (MSR c0010200 is 430076)

FWIW, you might want to talk to HP about that; some machines have a
magic key-combo in their BIOS screen with extra options, allowing you to
fix this.