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[73.95.159.87]) by smtp.gmail.com with ESMTPSA id e22sm2717551iog.2.2019.08.15.13.29.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Aug 2019 13:29:22 -0700 (PDT) Date: Thu, 15 Aug 2019 13:29:21 -0700 (PDT) From: Paul Walmsley X-X-Sender: paulw@viisi.sifive.com To: Alistair Francis , David Abdurachmanov cc: Anup Patel , "aou@eecs.berkeley.edu" , "palmer@sifive.com" , "linux-kernel@vger.kernel.org" , "rppt@linux.ibm.com" , "hch@infradead.org" , Atish Patra , "linux-riscv@lists.infradead.org" Subject: Re: [PATCH v5 2/2] RISC-V: Setup initial page tables in two stages In-Reply-To: Message-ID: References: <20190607060049.29257-1-anup.patel@wdc.com> <20190607060049.29257-3-anup.patel@wdc.com> <847fb8c879bbd2c3fd41dc1e428b3217253acebb.camel@wdc.com> User-Agent: Alpine 2.21.9999 (DEB 301 2018-08-15) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 15 Aug 2019, David Abdurachmanov wrote: > Yes, I do see those in Fedora/RISCV build farm every morning, but with > riscv64 and 5.2.0-rc7 kernel. [...] > fedora-riscv-4 login: [178876.406122] Unable to handle kernel paging > request at virtual address 0000000000012a28 > fedora-riscv-7 login: [17983.074847] Unable to handle kernel paging > request at virtual address 0fffffdff5e14700 Alistair, you're seeing panics immediately after the userspace transition, right? 100% of the time? If so, this is probably a different bug. Most likely the TLB flushing issue. - Paul