linux-kernel - Re: WARNING: lock held when returning to user space in ovl_write

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Message-ID: <00000000000059489f05a0ac9cae@google.com>
Date:   Thu, 12 Mar 2020 11:35:01 -0700
From:   syzbot <syzbot+9331a354f4f624a52a55@...kaller.appspotmail.com>
To:     jiufei.xue@...ux.alibaba.com, linux-kernel@...r.kernel.org,
        linux-unionfs@...r.kernel.org, miklos@...redi.hu,
        mszeredi@...hat.com, syzkaller-bugs@...glegroups.com
Subject: Re: WARNING: lock held when returning to user space in ovl_write_iter

Hello,

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

Reported-and-tested-by: syzbot+9331a354f4f624a52a55@...kaller.appspotmail.com

Tested on:

commit:         63623fd4 Merge tag 'for-linus' of git://git.kernel.org/pub..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel config:  https://syzkaller.appspot.com/x/.config?x=9833e26bab355358
dashboard link: https://syzkaller.appspot.com/bug?extid=9331a354f4f624a52a55
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
patch:          https://syzkaller.appspot.com/x/patch.diff?x=134ceef9e00000

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