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[209.85.220.65]) by mx.google.com with SMTPS id c2sor15693512pgd.67.2019.06.03.12.19.37 for (Google Transport Security); Mon, 03 Jun 2019 12:19:37 -0700 (PDT) Received-SPF: pass (google.com: domain of dexuan.linux@gmail.com designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=B6Luh7lF; spf=pass (google.com: domain of dexuan.linux@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=dexuan.linux@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=y1POYuY5yv6TKMl+TVizfTG3p/FI2fRpGzaKg8qUjGU=; b=B6Luh7lFrEGKMS0YaCVBv8YPdG1mQ6kipZMlOOIWg7PtGkDH5BzB5dbwoj+XazEPrQ gW4udVF7MtZdA8ZcHF04cxCgpkQ1Bq+DjrhRoEue0Qwkffa0UKyhVn5PZvC7IVcn+W0q jqKBgtw0etiOYNrWWIaxWusHOxiXee9ERSe2jvi8PwAE8XbNewSlVh9Po8LFTzZu1W4g URBPlLPp80M14E+DSIZklLmwiFd9NcKnayxknqEJMYSwethFJ+YjK+IXhoO/vhD5bTaY MiuHszmiwHy9XAa3KIJdZDvcPAXfPUzPE7AqYAr8j2favgR6jg2YNM4ih6TJ08VXIxUL fEMA== X-Google-Smtp-Source: APXvYqyxiiO0bsYaQbImkXitEOhDYoQvgmXhCfueX9MbGIWAyuoj8TggJ5ZITYx8TlJOta8cZTfOSJeb38kdARJg9LI= X-Received: by 2002:a63:81c6:: with SMTP id t189mr14722226pgd.293.1559589576950; Mon, 03 Jun 2019 12:19:36 -0700 (PDT) MIME-Version: 1.0 References: <20190603135939.e2mb7vkxp64qairr@pc636> <20190604003153.76f33dd2@canb.auug.org.au> In-Reply-To: From: Dexuan-Linux Cui Date: Mon, 3 Jun 2019 12:19:25 -0700 Message-ID: Subject: Re: [BUG BISECT] bug mm/vmalloc.c:470 (mm/vmalloc.c: get rid of one single unlink_va() when merge) To: Krzysztof Kozlowski Cc: Stephen Rothwell , Uladzislau Rezki , Andrew Morton , Michal Hocko , linux-mm@kvack.org, Marek Szyprowski , "linux-samsung-soc@vger.kernel.org" , Linux Kernel Mailing List , Hillf Danton , Thomas Gleixner , Tejun Heo , Andrei Vagin , Dexuan Cui , v-lide@microsoft.com Content-Type: text/plain; charset="UTF-8" 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: On Mon, Jun 3, 2019 at 7:37 AM Krzysztof Kozlowski wrote: > > On Mon, 3 Jun 2019 at 16:32, Stephen Rothwell wrote: > > > > Hi Krzysztof, > > > > On Mon, 3 Jun 2019 16:10:40 +0200 Krzysztof Kozlowski wrote: > > > > > > Indeed it looks like effect of merge conflict resolution or applying. > > > When I look at MMOTS, it is the same as yours: > > > http://git.cmpxchg.org/cgit.cgi/linux-mmots.git/commit/?id=b77b8cce67f246109f9d87417a32cd38f0398f2f > > > > > > However in linux-next it is different. > > > > > > Stephen, any thoughts? > > > > Have you had a look at today's linux-next? It looks correct in > > there. Andrew updated his patch series over the weekend. > > Yes, I am looking at today's next. Both the source code and the commit > 728e0fbf263e3ed359c10cb13623390564102881 have wrong "if (merged)" (put > in wrong hunk). > > Best regards, > Krzysztof FYI, we also see the issue in our x86 VM running on Hyper-V. Thanks, Dexuan