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Thu, 17 Jun 2021 05:15:46 -0700 (PDT) MIME-Version: 1.0 References: <20210615115044.GC20598@willie-the-truck> In-Reply-To: <20210615115044.GC20598@willie-the-truck> From: Naresh Kamboju Date: Thu, 17 Jun 2021 17:45:34 +0530 Message-ID: Subject: Re: [next] [arm64] kernel BUG at arch/arm64/mm/physaddr.c To: Will Deacon Cc: Linux-Next Mailing List , linux-mm , Linux ARM , open list , lkft-triage@lists.linaro.org, regressions@lists.linux.dev, Andrew Morton , Stephen Rothwell , Arnd Bergmann , Ard Biesheuvel , Catalin Marinas , Mike Rapoport , Christophe Leroy Content-Type: text/plain; charset="UTF-8" Authentication-Results: imf06.hostedemail.com; dkim=pass header.d=linaro.org header.s=google header.b="vacGRMy/"; spf=pass (imf06.hostedemail.com: domain of naresh.kamboju@linaro.org designates 209.85.208.41 as permitted sender) smtp.mailfrom=naresh.kamboju@linaro.org; dmarc=pass (policy=none) header.from=linaro.org X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 5DDF1C00F783 X-Stat-Signature: bpxdgrzddnrnkfri8peezmjcuemci8ap X-HE-Tag: 1623932137-603299 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi Will, On Tue, 15 Jun 2021 at 17:20, Will Deacon wrote: > > Hi Naresh, > > On Tue, Jun 15, 2021 at 04:41:25PM +0530, Naresh Kamboju wrote: > > Following kernel crash reported while boot linux next 20210615 tag on qemu_arm64 > > with allmodconfig build. > Thanks for the report, although since this appears to be part of a broader > testing effort, here are some things that I think would make the reports > even more useful: > > 1. An indication as to whether or not this is a regression (i.e. do you > have a known good build, perhaps even a bisection?) > > 2. Either a link to the vmlinux, or faddr2line run on the backtrace. > Looking at the above, I can't tell what sparse_init_nid+0x98/0x6d0 > actually is. > > 3. The exact QEMU command-line you are using, so I can try to reproduce > this locally. I think the 0-day bot wraps the repro up in a shell > script for you. > > 4. Whether or not the issue is reproducible. > > 5. Information about the toolchain you used to build the kernel (it > happens to be present here because it's in the kernel log, but > generally I think it would be handy to specify that in the report). > > Please can you provide that information for this crash? It would really > help in debugging it. Sorry for the incomplete bug report. Thanks for sharing these details. Next time I will include the suggested data points in my email report. - Naresh