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Message-ID: <71265ac6-c127-838f-d129-a9a95f755ecf@i-love.sakura.ne.jp> Date: Fri, 3 May 2019 19:29:26 +0900 From: Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp> To: Jan Kara <jack@...e.cz>, Al Viro <viro@...iv.linux.org.uk> Cc: syzbot <syzbot+10007d66ca02b08f0e60@...kaller.appspotmail.com>, axboe@...nel.dk, dvyukov@...gle.com, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: Re: INFO: task hung in __get_super On 2019/05/01 0:34, Tetsuo Handa wrote: > I still cannot understand what the problem is. (...snipped...) > I guessed that something went wrong with 8083 inside __getblk_gfp(). > How can loop_ctl_mutex be relevant to this problem? > syzbot got similar NMI backtrace. No loop_ctl_mutex is involved. INFO: task hung in mount_bdev (2) https://syzkaller.appspot.com/bug?id=d9b9fa1428ff2466de64fc85256e769f516cea58
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