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([2600:1013:b010:3805:49d9:11b0:692b:4e3d]) by smtp.gmail.com with ESMTPSA id z8-v6sm3816487pfe.163.2018.07.20.14.35.36 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 20 Jul 2018 14:35:36 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (1.0) Subject: Re: Kernel 4.17.4 lockup From: Andy Lutomirski X-Mailer: iPhone Mail (15G77) In-Reply-To: Date: Fri, 20 Jul 2018 11:35:34 -1000 Cc: Dave Hansen , Dave Jones , "H. Peter Anvin" , LKML , Andy Lutomirski , Mel Gorman , Andrew Morton , Rik van Riel , Minchan Kim Content-Transfer-Encoding: quoted-printable Message-Id: <88CBCB04-43F6-4353-82F7-20A67AD49B65@amacapital.net> References: <9548e10a-7403-425e-bf1f-b1eb9d055d99@intel.com> <2022d212-62f2-a163-2493-abecfbafa07b@intel.com> <067e2d5d-1abf-efd4-cb50-992ba5ca6748@intel.com> <20180711183126.yo7eyqpd4ggb5kcr@codemonkey.org.uk> <9A6C6EEB-85D8-4F59-95ED-EB4DA5947BCA@amacapital.net> To: "H.J. Lu" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On Jul 16, 2018, at 6:05 AM, H.J. Lu wrote: >=20 >> On Fri, Jul 13, 2018 at 7:08 PM, Andy Lutomirski wr= ote: >> I'm not at all convinced that this is the problem, but the series here >> will give a better diagnostic if the issue really is an IRQ stack >> overflow: >>=20 >> https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git/log/?h=3Dx= 86/guard_pages >>=20 >=20 > This kernel won't boot with this configure file. Bah humbug. You=E2=80=99ll need to turn KASAN off (and maybe even compile it= out entirely) if you want to test this. I need to bug the KASAN folks to un= break their interaction with stacks in vmap space. It=E2=80=99s been broken= literally forever, but I keep incorrectly imagining that it=E2=80=99s been f= ixed already. >=20 > --=20 > H.J. >