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[209.85.220.65]) by mx.google.com with SMTPS id j28sor19526331qta.53.2019.06.18.01.01.43 for (Google Transport Security); Tue, 18 Jun 2019 01:01:43 -0700 (PDT) Received-SPF: pass (google.com: domain of arndbergmann@gmail.com designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; spf=pass (google.com: domain of arndbergmann@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=arndbergmann@gmail.com X-Google-Smtp-Source: APXvYqynQ5w36BP/oae5cSk/XmTmxDHjsYOb6nmmK9VfbUuACv+qzschtpJZO5zjFMzBPDMzYItF9huO7MOjqr8Yc28= X-Received: by 2002:aed:3e7c:: with SMTP id m57mr93398121qtf.204.1560844903063; Tue, 18 Jun 2019 01:01:43 -0700 (PDT) MIME-Version: 1.0 References: <20190617121427.77565-1-arnd@arndb.de> <20190617141244.5x22nrylw7hodafp@pc636> <20190617165730.5l7z47n3vg73q7mp@pc636> In-Reply-To: From: Arnd Bergmann Date: Tue, 18 Jun 2019 10:01:26 +0200 Message-ID: Subject: Re: [BUG]: mm/vmalloc: uninitialized variable access in pcpu_get_vm_areas To: Uladzislau Rezki Cc: Roman Gushchin , Michal Hocko , Matthew Wilcox , Thomas Garnier , Oleksiy Avramchenko , Steven Rostedt , Joel Fernandes , Thomas Gleixner , Ingo Molnar , Tejun Heo , Andrew Morton , Linus Torvalds , Stephen Rothwell , Roman Penyaev , Rick Edgecombe , Andrey Ryabinin , Mike Rapoport , Linux-MM , Linux Kernel Mailing List 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 17, 2019 at 9:29 PM Arnd Bergmann wrote: > On Mon, Jun 17, 2019 at 6:57 PM Uladzislau Rezki wrote: > Using switch/case makes it easier for the compiler because it > seems to turn this into a single conditional instead of a set of > conditions. It also seems to be the much more common style > in the kernel. Nevermind, the warning came back after all. It's now down to one out of 2000 randconfig builds I tested, but that's not good enough. I'll send a patch the way you suggested. Arnd