On Fri, Aug 28, 2020 at 06:18:17AM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: d012a719 Linux 5.9-rc2 > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=15aa650e900000 > kernel config: https://syzkaller.appspot.com/x/.config?x=891ca5711a9f1650 > dashboard link: https://syzkaller.appspot.com/bug?extid=c92c93d1f1aaaacdb9db > compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12ecb939900000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=140a19a9900000 > > The issue was bisected to: > > commit a9ed4a6560b8562b7e2e2bed9527e88001f7b682 > Author: Marc Zyngier <maz@xxxxxxxxxx> > Date: Wed Aug 19 16:12:17 2020 +0000 > > epoll: Keep a reference on files added to the check list > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16a50519900000 > final oops: https://syzkaller.appspot.com/x/report.txt?x=15a50519900000 > console output: https://syzkaller.appspot.com/x/log.txt?x=11a50519900000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+c92c93d1f1aaaacdb9db@xxxxxxxxxxxxxxxxxxxxxxxxx > Fixes: a9ed4a6560b8 ("epoll: Keep a reference on files added to the check list") > > ------------[ cut here ]------------ > kernel BUG at fs/inode.c:1668! #syz set subsystem: fs This has been among btrfs bugs but this is is 'fs' and probably with a fix but I was not able to identify it among all the changes in eventpoll.c
