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[209.85.220.69]) by mx.google.com with SMTPS id e13sor3518644ioh.112.2019.06.04.18.16.00 for (Google Transport Security); Tue, 04 Jun 2019 18:16:00 -0700 (PDT) Received-SPF: pass (google.com: domain of 30bf3xakbamk7dezp00t6p44xs.v33v0t97t6r328t28.r31@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) client-ip=209.85.220.69; Authentication-Results: mx.google.com; spf=pass (google.com: domain of 30bf3xakbamk7dezp00t6p44xs.v33v0t97t6r328t28.r31@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) smtp.mailfrom=30Bf3XAkbAMk7DEzp00t6p44xs.v33v0t97t6r328t28.r31@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com X-Google-Smtp-Source: APXvYqyZ29aiETxQGapPeY5BBEdXLC0rlE3NJCR2G4dNoGSX9gBRxgTLHXrDZB5y+iumqWQ8OcygrjVAkKZaPDKVOogeeEOvOhLK MIME-Version: 1.0 X-Received: by 2002:a6b:e00b:: with SMTP id z11mr6761741iog.27.1559697360239; Tue, 04 Jun 2019 18:16:00 -0700 (PDT) Date: Tue, 04 Jun 2019 18:16:00 -0700 In-Reply-To: <000000000000543e45058a3cf40b@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001d42b5058a895703@google.com> Subject: Re: possible deadlock in get_user_pages_unlocked (2) From: syzbot To: akpm@linux-foundation.org, aneesh.kumar@linux.ibm.com, dan.j.williams@intel.com, ira.weiny@intel.com, jack@suse.cz, jhubbard@nvidia.com, jmorris@namei.org, keith.busch@intel.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-security-module@vger.kernel.org, richard.weiyang@gmail.com, rppt@linux.ibm.com, serge@hallyn.com, sfr@canb.auug.org.au, syzkaller-bugs@googlegroups.com, willy@infradead.org, zohar@linux.ibm.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes 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: syzbot has bisected this bug to: commit 69d61f577d147b396be0991b2ac6f65057f7d445 Author: Mimi Zohar Date: Wed Apr 3 21:47:46 2019 +0000 ima: verify mprotect change is consistent with mmap policy bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1055a2f2a00000 start commit: 56b697c6 Add linux-next specific files for 20190604 git tree: linux-next final crash: https://syzkaller.appspot.com/x/report.txt?x=1255a2f2a00000 console output: https://syzkaller.appspot.com/x/log.txt?x=1455a2f2a00000 kernel config: https://syzkaller.appspot.com/x/.config?x=4248d6bc70076f7d dashboard link: https://syzkaller.appspot.com/bug?extid=e1374b2ec8f6a25ab2e5 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=165757eea00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10dd3e86a00000 Reported-by: syzbot+e1374b2ec8f6a25ab2e5@syzkaller.appspotmail.com Fixes: 69d61f577d14 ("ima: verify mprotect change is consistent with mmap policy") For information about bisection process see: https://goo.gl/tpsmEJ#bisection