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[172.10.233.147]) by smtp.gmail.com with ESMTPSA id j34sm8210899otc.15.2020.10.11.13.23.14 (version=TLS1 cipher=ECDHE-ECDSA-AES128-SHA bits=128/128); Sun, 11 Oct 2020 13:23:15 -0700 (PDT) Date: Sun, 11 Oct 2020 13:23:12 -0700 (PDT) From: Hugh Dickins X-X-Sender: hugh@eggly.anvils To: Qian Cai cc: Matthew Wilcox , linux-xfs@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, linux-s390@vger.kernel.org, heiko.carstens@de.ibm.com, borntraeger@de.ibm.com, darrick.wong@oracle.com, kirill@shutemov.name, peterx@redhat.com, yang.shi@linux.alibaba.com, hch@lst.de, linux-kernel@vger.kernel.org, songliubraving@fb.com Subject: Re: VM_BUG_ON_PAGE(page_to_pgoff(page) != offset) on s390 In-Reply-To: <20200617031906.GA5065@lca.pw> Message-ID: References: <20200616013309.GB815@lca.pw> <20200616014859.GY8681@bombadil.infradead.org> <20200617031906.GA5065@lca.pw> User-Agent: Alpine 2.11 (LSU 23 2013-08-11) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Adding a note to update this thread: the v5.9 tree now has 033b5d775511 ("mm/khugepaged: fix filemap page_to_pgoff(page) != offset") which fixes this VM_BUG_ON_PAGE (or data corruption) when CONFIG_NUMA is not set: we are hoping that may have have been the problem here.