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[66.187.233.206]) by smtp.gmail.com with ESMTPSA id c41sm4220482qtc.75.2019.03.21.11.58.14 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 21 Mar 2019 11:58:15 -0700 (PDT) Message-ID: <1553194694.26196.18.camel@lca.pw> Subject: Re: Fw: [Bug 202919] New: Bad page map in process syz-executor.5 pte:9100000081 pmd:47c67067 From: Qian Cai To: Andrew Morton , linux-mm@kvack.org Cc: Mark Rutland Date: Thu, 21 Mar 2019 14:58:14 -0400 In-Reply-To: <20190320170151.2ed757a48e892ebc05922389@linux-foundation.org> References: <20190320170151.2ed757a48e892ebc05922389@linux-foundation.org> 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000073, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, 2019-03-20 at 17:01 -0700, Andrew Morton wrote: > kcov_mmap()/kcov_fault_in_area() appear to have produced a pte which > confused _vm_normal_page().  Could someone please take a look? Tough without a reproducer.