linux-kernel - Re: INFO: trying to register non-static key in io_cqring_ev

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Date:   Tue, 31 Mar 2020 04:14:03 -0700
From:   syzbot <syzbot+0c3370f235b74b3cfd97@...kaller.appspotmail.com>
To:     axboe@...nel.dk, hdanton@...a.com, io-uring@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: Re: INFO: trying to register non-static key in io_cqring_ev_posted (2)

syzbot has bisected this bug to:

commit b41e98524e424d104aa7851d54fd65820759875a
Author: Jens Axboe <axboe@...nel.dk>
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@...kaller.appspotmail.com
Fixes: b41e98524e42 ("io_uring: add per-task callback handler")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection