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From: Vince Weaver <vincent.weaver@maine.edu>
X-Google-Original-From: Vince Weaver <vince@vincent-weaver-1.umelst.maine.edu>
Date: Fri, 24 Apr 2015 10:03:04 -0400 (EDT)
To: Vince Weaver <vincent.weaver@maine.edu>
cc: Stephane Eranian <eranian@google.com>, linux-kernel@vger.kernel.org,
        peterz@infradead.org, ak@linux.intel.com, kan.liang@intel.com,
        mingo@elte.hu, sonnyrao@chromium.org
Subject: Re: [PATCH] perf/x86/intel/uncore: fix IMC missing box
 initialization
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On Fri, 24 Apr 2015, Vince Weaver wrote:

> [   79.473121] kernel BUG at mm/vmalloc.c:1335!
> [   79.477705] invalid opcode: 0000 [#1] SMP 
...
> [   79.694391] Call Trace:
> [   79.696997]  <IRQ> 
> [   79.699090]  [<ffffffff811b2130>] get_vm_area_caller+0x40/0x50
> [   79.705505]  [<ffffffff81039f4d>] ? snb_uncore_imc_init_box+0x6d/0x90

This maps to:

	static void snb_uncore_imc_init_box(struct intel_uncore_box *box) {
		...
	        box->io_addr = ioremap(addr, SNB_UNCORE_PCI_IMC_MAP_SIZE);

The machine I am seeing this on is a Haswell desktop, Intel 6/60/3.

Vince
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