syzbot has bisected this bug to:
commit b41e98524e424d104aa7851d54fd65820759875a
Author: Jens Axboe <axboe@xxxxxxxxx>
Date: Mon Feb 17 16:52:41 2020 +0000
io_uring: add per-task callback handler
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=115adadbe00000
start commit: 673b41e0 staging/octeon: fix up merge error
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=135adadbe00000
console output: https://syzkaller.appspot.com/x/log.txt?x=155adadbe00000
kernel config: https://syzkaller.appspot.com/x/.config?x=acf766c0e3d3f8c6
dashboard link: https://syzkaller.appspot.com/bug?extid=0c3370f235b74b3cfd97
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13ac1b9de00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10449493e00000
Reported-by: syzbot+0c3370f235b74b3cfd97@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: b41e98524e42 ("io_uring: add per-task callback handler")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
