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[66.187.233.206]) by smtp.gmail.com with ESMTPSA id k11sm1510843qtp.26.2019.09.05.14.08.00 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 05 Sep 2019 14:08:01 -0700 (PDT) Message-ID: <1567717680.5576.104.camel@lca.pw> Subject: Re: page_alloc.shuffle=1 + CONFIG_PROVE_LOCKING=y = arm64 hang From: Qian Cai To: Catalin Marinas , Will Deacon Cc: Dan Williams , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Peter Zijlstra , Waiman Long , Thomas Gleixner Date: Thu, 05 Sep 2019 17:08:00 -0400 In-Reply-To: <1566509603.5576.10.camel@lca.pw> References: <1566509603.5576.10.camel@lca.pw> 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: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Another data point is if change CONFIG_DEBUG_OBJECTS_TIMERS from =y to =n, it will also fix it. On Thu, 2019-08-22 at 17:33 -0400, Qian Cai wrote: > https://raw.githubusercontent.com/cailca/linux-mm/master/arm64.config > > Booting an arm64 ThunderX2 server with page_alloc.shuffle=1 [1] + > CONFIG_PROVE_LOCKING=y results in hanging. > > [1] https://lore.kernel.org/linux-mm/154899811208.3165233.17623209031065121886.s > tgit@dwillia2-desk3.amr.corp.intel.com/ > > ... > [  125.142689][    T1] arm-smmu-v3 arm-smmu-v3.2.auto: option mask 0x2 > [  125.149687][    T1] arm-smmu-v3 arm-smmu-v3.2.auto: ias 44-bit, oas 44-bit > (features 0x0000170d) > [  125.165198][    T1] arm-smmu-v3 arm-smmu-v3.2.auto: allocated 524288 entries > for cmdq > [  125.239425][ [  125.251484][    T1] arm-smmu-v3 arm-smmu-v3.3.auto: option > mask 0x2 > [  125.258233][    T1] arm-smmu-v3 arm-smmu-v3.3.auto: ias 44-bit, oas 44-bit > (features 0x0000170d) > [  125.282750][    T1] arm-smmu-v3 arm-smmu-v3.3.auto: allocated 524288 entries > for cmdq > [  125.320097][    T1] arm-smmu-v3 arm-smmu-v3.3.auto: allocated 524288 entries > for evtq > [  125.332667][    T1] arm-smmu-v3 arm-smmu-v3.4.auto: option mask 0x2 > [  125.339427][    T1] arm-smmu-v3 arm-smmu-v3.4.auto: ias 44-bit, oas 44-bit > (features 0x0000170d) > [  125.354846][    T1] arm-smmu-v3 arm-smmu-v3.4.auto: allocated 524288 entries > for cmdq > [  125.375295][    T1] arm-smmu-v3 arm-smmu-v3.4.auto: allocated 524288 entries > for evtq > [  125.387371][    T1] arm-smmu-v3 arm-smmu-v3.5.auto: option mask 0x2 > [  125.393955][    T1] arm-smmu-v3 arm-smmu-v3.5.auto: ias 44-bit, oas 44-bit > (features 0x0000170d) > [  125.522605][    T1] arm-smmu-v3 arm-smmu-v3.5.auto: allocated 524288 entries > for cmdq > [  125.543338][    T1] arm-smmu-v3 arm-smmu-v3.5.auto: allocated 524288 entries > for evtq > [  126.694742][    T1] EFI Variables Facility v0.08 2004-May-17 > [  126.799291][    T1] NET: Registered protocol family 17 > [  126.978632][    T1] zswap: loaded using pool lzo/zbud > [  126.989168][    T1] kmemleak: Kernel memory leak detector initialized > [  126.989191][ T1577] kmemleak: Automatic memory scanning thread started > [  127.044079][ T1335] pcieport 0000:0f:00.0: Adding to iommu group 0 > [  127.388074][    T1] Freeing unused kernel memory: 22528K > [  133.527005][    T1] Checked W+X mappings: passed, no W+X pages found > [  133.533474][    T1] Run /init as init process > [  133.727196][    T1] systemd[1]: System time before build time, advancing > clock. > [  134.576021][ T1587] modprobe (1587) used greatest stack depth: 27056 bytes > left > [  134.764026][    T1] systemd[1]: systemd 239 running in system mode. (+PAM > +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT > +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default- > hierarchy=legacy) > [  134.799044][    T1] systemd[1]: Detected architecture arm64. > [  134.804818][    T1] systemd[1]: Running in initial RAM disk. > <...hang...> > > Fix it by either set page_alloc.shuffle=0 or CONFIG_PROVE_LOCKING=n which allow > it to continue successfully. > > > [  121.093846][    T1] systemd[1]: Set hostname to . > [  123.157524][    T1] random: systemd: uninitialized urandom read (16 bytes > read) > [  123.168562][    T1] systemd[1]: Listening on Journal Socket. > [  OK  ] Listening on Journal Socket. > [  123.203932][    T1] random: systemd: uninitialized urandom read (16 bytes > read) > [  123.212813][    T1] systemd[1]: Listening on udev Kernel Socket. > [  OK  ] Listening on udev Kernel Socket. > ...