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Wed, 18 Sep 2019 08:58:25 -0700 (PDT) From: Sergey Senozhatsky X-Google-Original-From: Sergey Senozhatsky Date: Thu, 19 Sep 2019 00:58:23 +0900 To: Sergey Senozhatsky Subject: Re: printk() + memory offline deadlock (WAS Re: page_alloc.shuffle=1 + CONFIG_PROVE_LOCKING=y = arm64 hang) Message-ID: <20190918155823.GB158834@tigerII.localdomain> References: <1566509603.5576.10.camel@lca.pw> <1567717680.5576.104.camel@lca.pw> <1568128954.5576.129.camel@lca.pw> <20190911011008.GA4420@jagdpanzerIV> <1568289941.5576.140.camel@lca.pw> <20190916104239.124fc2e5@gandalf.local.home> <1568817579.5576.172.camel@lca.pw> <20190918155059.GA158834@tigerII.localdomain> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190918155059.GA158834@tigerII.localdomain> User-Agent: Mutt/1.12.1 (2019-06-15) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190918_085828_640413_6319CE8E X-CRM114-Status: UNSURE ( 7.50 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Petr Mladek , Theodore Ts'o , Arnd Bergmann , Peter Zijlstra , Catalin Marinas , linux-kernel@vger.kernel.org, Steven Rostedt , linux-mm@kvack.org, Qian Cai , Greg Kroah-Hartman , Waiman Long , Dan Williams , Will Deacon , Thomas Gleixner , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org A correction: On (09/19/19 00:51), Sergey Senozhatsky wrote: [..] > > zone->lock --> console_sem->lock > > So then we have > > zone->lock --> console_sem->lock --> pi_lock --> rq->lock > > vs. the reverse chain > > rq->lock --> console_sem->lock ^^^ zone->lock -ss _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel