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[209.85.220.65]) by mx.google.com with SMTPS id t26sor4181859wmj.25.2019.03.21.11.57.30 for (Google Transport Security); Thu, 21 Mar 2019 11:57:30 -0700 (PDT) Received-SPF: pass (google.com: domain of mikhail.v.gavrilov@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=euQLU2Xc; spf=pass (google.com: domain of mikhail.v.gavrilov@gmail.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=mikhail.v.gavrilov@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=k4/o12332QL7VyxmH7N//Xj1/7/p+fqipKwASTaeBR0=; b=euQLU2XcKsvkOwUxPVT0Ai0NgLmj+t8HVKIgz1E3lfFw+qdqR4CAaPNHaoHtE2dBbf U7CXv8hpMye2g0x8QbnKSa5JU72b7yoYCMDGlAd8T4asyqcqBBZJbpDSURzLhy9OCpXj tMOMtOk4QZUZ1xYPde+BY5yKwhZ6vOM7gLOMOLpXtRlgc2LY9E4FBED5PcC44MQBoa2x JOMqhnSbQGD+RqCFc60bLyGrbUeS1qiT6pRJi1b6mLaWzYjbHZkiZZgjd/MKK8tgeQb9 BOxftEUbAhp89fm/2LkAnEz+TjrihnQkKoSttiPeU0PxoM2kHlKuXdyYaF1fL7jir54s 0QwA== X-Google-Smtp-Source: APXvYqz/nFaRkE5KwQhK/5840K12O/IcX+w5EbmyDGpVH+EW7wBhWfcRRswUW45+PdVWTscXCUtrTQzfYH7nbXOj+2A= X-Received: by 2002:a1c:4e04:: with SMTP id g4mr441765wmh.127.1553194650179; Thu, 21 Mar 2019 11:57:30 -0700 (PDT) MIME-Version: 1.0 References: <20190315205826.fgbelqkyuuayevun@ca-dmjordan1.us.oracle.com> <1553174486.26196.11.camel@lca.pw> <1553183333.26196.15.camel@lca.pw> In-Reply-To: <1553183333.26196.15.camel@lca.pw> From: Mikhail Gavrilov Date: Thu, 21 Mar 2019 23:57:19 +0500 Message-ID: Subject: Re: kernel BUG at include/linux/mm.h:1020! To: Qian Cai Cc: Daniel Jordan , linux-mm@kvack.org, mgorman@techsingularity.net, vbabka@suse.cz 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 Thu, 21 Mar 2019 at 20:48, Qian Cai wrote: > OK, those pages look similar enough. If you add this to __init_single_page() in > mm/page_alloc.c : > > if (page == (void *)0xffffdcd2607ce000 || page == (void *)0xffffe4b7607ce000 || > page == (void *)0xffffd27aa07ce000 || page == (void *)0xffffcf49607ce000) { > printk("KK page = %px\n", page); > dump_stack(); > } > > to see where those pages have been initialized in the first place. In the new kernel panics "page" also does not repeated. $ journalctl | grep "page:" Mar 21 20:46:56 localhost.localdomain kernel: page:fffffbbbe07ce000 is uninitialized and poisoned Mar 21 21:28:03 localhost.localdomain kernel: page:ffffdecc207ce000 is uninitialized and poisoned Mar 21 23:43:24 localhost.localdomain kernel: page:fffff91ce07ce000 is uninitialized and poisoned -- Best Regards, Mike Gavrilov.