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

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Message-ID: <000000000000ab834f0597d4f337@google.com>
Date:   Wed, 20 Nov 2019 21:56:00 -0800
From:   syzbot <syzbot+0d818c0d39399188f393@...kaller.appspotmail.com>
To:     axboe@...nel.dk, io-uring@...r.kernel.org,
        linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, liuyun01@...inos.cn,
        syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: Re: INFO: trying to register non-static key in io_cqring_ev_posted

syzbot has bisected this bug to:

commit 206aefde4f886fdeb3b6339aacab3a85fb74cb7e
Author: Jens Axboe <axboe@...nel.dk>
Date:   Fri Nov 8 01:27:42 2019 +0000

     io_uring: reduce/pack size of io_ring_ctx

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15f98af2e00000
start commit:   5d1131b4 Add linux-next specific files for 20191119
git tree:       linux-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=17f98af2e00000
console output: https://syzkaller.appspot.com/x/log.txt?x=13f98af2e00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b60c562d89e5a8df
dashboard link: https://syzkaller.appspot.com/bug?extid=0d818c0d39399188f393
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=169b29d2e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14b3956ae00000

Reported-by: syzbot+0d818c0d39399188f393@...kaller.appspotmail.com
Fixes: 206aefde4f88 ("io_uring: reduce/pack size of io_ring_ctx")

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