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Date: Fri, 22 Mar 2019 00:14:00 -0700 From: syzbot <syzbot+53c0b767f7ca0dc0c451@...kaller.appspotmail.com> To: adam.manzanares@....com, avi@...lladb.com, bcrl@...ck.org, darrick.wong@...cle.com, hch@....de, jmoyer@...hat.com, linux-aio@...ck.org, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk Subject: Re: possible deadlock in userfaultfd_release syzbot has bisected this bug to: commit bfe4037e722ec672c9dafd5730d9132afeeb76e9 Author: Christoph Hellwig <hch@....de> Date: Mon Jul 16 07:08:20 2018 +0000 aio: implement IOCB_CMD_POLL bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1382985d200000 start commit: bfe4037e aio: implement IOCB_CMD_POLL git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=1042985d200000 console output: https://syzkaller.appspot.com/x/log.txt?x=1782985d200000 kernel config: https://syzkaller.appspot.com/x/.config?x=5c0a49d2b5210087 dashboard link: https://syzkaller.appspot.com/bug?extid=53c0b767f7ca0dc0c451 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1111f2eb400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13e874f5400000 Reported-by: syzbot+53c0b767f7ca0dc0c451@...kaller.appspotmail.com Fixes: bfe4037e722e ("aio: implement IOCB_CMD_POLL") For information about bisection process see: https://goo.gl/tpsmEJ#bisection
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