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[209.85.220.69]) by mx.google.com with SMTPS id a184sor1791054itc.31.2019.03.11.20.59.00 for (Google Transport Security); Mon, 11 Mar 2019 20:59:00 -0700 (PDT) Received-SPF: pass (google.com: domain of 3hc6hxakbaocbhitjuunajyyrm.pxxpundbnalxwcnwc.lxv@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 3hc6hxakbaocbhitjuunajyyrm.pxxpundbnalxwcnwc.lxv@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com designates 209.85.220.69 as permitted sender) smtp.mailfrom=3hC6HXAkbAOcbhiTJUUNaJYYRM.PXXPUNdbNaLXWcNWc.LXV@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com X-Google-Smtp-Source: APXvYqwx9h7KDCPuvh+6fEd+XQtf2O1zRoUBFtwZYLOb127vefqqt6zi0UA2Qkz2LYFWcqyT1Fnl/+4tGtcpRf0Lowm6YM5gcQBt MIME-Version: 1.0 X-Received: by 2002:a24:6283:: with SMTP id d125mr833066itc.14.1552363140443; Mon, 11 Mar 2019 20:59:00 -0700 (PDT) Date: Mon, 11 Mar 2019 20:59:00 -0700 In-Reply-To: <00000000000010b2fc057fcdfaba@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000008c75b50583ddb5f8@google.com> Subject: Re: INFO: rcu detected stall in sys_sendfile64 (2) From: syzbot To: airlied@linux.ie, akpm@linux-foundation.org, amir73il@gmail.com, chris@chris-wilson.co.uk, darrick.wong@oracle.com, david@fromorbit.com, dri-devel@lists.freedesktop.org, dvyukov@google.com, eparis@redhat.com, hannes@cmpxchg.org, hughd@google.com, intel-gfx@lists.freedesktop.org, jack@suse.cz, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, jrdr.linux@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mingo@redhat.com, mszeredi@redhat.com, penguin-kernel@I-love.SAKURA.ne.jp, peterz@infradead.org, rodrigo.vivi@intel.com, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk, willy@infradead.org 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 34e07e42c55aeaa78e93b057a6664e2ecde3fadb Author: Chris Wilson Date: Thu Feb 8 10:54:48 2018 +0000 drm/i915: Add missing kerneldoc for 'ent' in i915_driver_init_early bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13220283200000 start commit: 34e07e42 drm/i915: Add missing kerneldoc for 'ent' in i915.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=10a20283200000 console output: https://syzkaller.appspot.com/x/log.txt?x=17220283200000 kernel config: https://syzkaller.appspot.com/x/.config?x=abc3dc9b7a900258 dashboard link: https://syzkaller.appspot.com/bug?extid=1505c80c74256c6118a5 userspace arch: amd64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12c4dc28c00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15df4108c00000 Reported-by: syzbot+1505c80c74256c6118a5@syzkaller.appspotmail.com Fixes: 34e07e42 ("drm/i915: Add missing kerneldoc for 'ent' in i915_driver_init_early")