linux-kernel - Re: BUG: unable to handle kernel paging request in percpu_ref

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Message-ID: <0000000000004a4ef105b87a9e10@google.com>
Date:   Sat, 09 Jan 2021 09:01:04 -0800
From:   syzbot <syzbot+99ed55100402022a6276@...kaller.appspotmail.com>
To:     asml.silence@...il.com, axboe@...nel.dk, io-uring@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        mingo@...nel.org, mingo@...hat.com, peterz@...radead.org,
        rostedt@...dmis.org, syzkaller-bugs@...glegroups.com,
        viro@...iv.linux.org.uk, will@...nel.org
Subject: Re: BUG: unable to handle kernel paging request in percpu_ref_exit

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+99ed55100402022a6276@...kaller.appspotmail.com

Tested on:

commit:         d9d05217 io_uring: stop SQPOLL submit on creator's death
git tree:       git://git.kernel.dk/linux-block
kernel config:  https://syzkaller.appspot.com/x/.config?x=2455d075a1c4afa8
dashboard link: https://syzkaller.appspot.com/bug?extid=99ed55100402022a6276
compiler:       gcc (GCC) 10.1.0-syz 20200507

Note: testing is done by a robot and is best-effort only.