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[66.187.233.206]) by smtp.gmail.com with ESMTPSA id 136sm1313279qkg.96.2019.08.23.04.52.14 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 23 Aug 2019 04:52:15 -0700 (PDT) Message-ID: <1566561133.5576.12.camel@lca.pw> Subject: Re: page_alloc.shuffle=1 + CONFIG_PROVE_LOCKING=y = arm64 hang From: Qian Cai To: Will Deacon Cc: Catalin Marinas , Dan Williams , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Peter Zijlstra Date: Fri, 23 Aug 2019 07:52:13 -0400 In-Reply-To: <20190823113715.n3lc73vtc4ea2ln4@willie-the-truck> References: <1566509603.5576.10.camel@lca.pw> <20190823113715.n3lc73vtc4ea2ln4@willie-the-truck> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.22.6 (3.22.6-10.el7) Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, 2019-08-23 at 12:37 +0100, Will Deacon wrote: > On Thu, Aug 22, 2019 at 05:33:23PM -0400, Qian Cai wrote: > > https://raw.githubusercontent.com/cailca/linux-mm/master/arm64.config > >=20 > > Booting an arm64 ThunderX2 server with page_alloc.shuffle=3D1 [1] + > > CONFIG_PROVE_LOCKING=3Dy=C2=A0results in hanging. >=20 > Hmm, but the config you link to above has: >=20 > # CONFIG_PROVE_LOCKING is not set >=20 > so I'm confused. Also, which tree is this? I manually turn on CONFIG_PROVE_LOCKING=3Dy on the top of that, and repro= duce on both the mainline and linux-next trees.