linux-kernel - Re: WARNING: bad unlock balance in __get_user_pages

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Date:   Tue, 07 Apr 2020 14:08:04 -0700
From:   syzbot <syzbot+a8c70b7f3579fc0587dc@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, bgeffon@...gle.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        peterx@...hat.com, syzkaller-bugs@...glegroups.com,
        torvalds@...ux-foundation.org
Subject: Re: WARNING: bad unlock balance in __get_user_pages_remote

Hello,

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

Reported-and-tested-by: syzbot+a8c70b7f3579fc0587dc@...kaller.appspotmail.com

Tested on:

commit:         763dede1 Merge tag 'for-linus-5.7-rc1' of git://git.kernel..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
kernel config:  https://syzkaller.appspot.com/x/.config?x=5b9ca0b4c36cd4da
dashboard link: https://syzkaller.appspot.com/bug?extid=a8c70b7f3579fc0587dc
compiler:       clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81)
patch:          https://syzkaller.appspot.com/x/patch.diff?x=122c0e1be00000

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