Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Mon, 6 Aug 2018 13:32:12 +0200
From:   Michal Hocko <mhocko@kernel.org>
To:     syzbot <syzbot+bab151e82a4e973fa325@syzkaller.appspotmail.com>
Cc:     cgroups@vger.kernel.org, dvyukov@google.com, hannes@cmpxchg.org,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        penguin-kernel@I-love.SAKURA.ne.jp,
        syzkaller-bugs@googlegroups.com, vdavydov.dev@gmail.com
Subject: Re: WARNING in try_charge
Message-ID: <20180806113212.GK19540@dhcp22.suse.cz>
References: <884de816-671a-44d4-a6a1-2ad7eff53715@I-love.SAKURA.ne.jp>
 <00000000000070698b0572c28ebc@google.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <00000000000070698b0572c28ebc@google.com>
User-Agent: Mutt/1.10.1 (2018-07-13)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Mon 06-08-18 04:27:02, syzbot wrote:
> Hello,
> 
> syzbot has tested the proposed patch and the reproducer did not trigger
> crash:
> 
> Reported-and-tested-by:
> syzbot+bab151e82a4e973fa325@syzkaller.appspotmail.com
> 
> Tested on:
> 
> commit:         8c8399e0a3fb Add linux-next specific files for 20180806
> git tree:       linux-next
> kernel config:  https://syzkaller.appspot.com/x/.config?x=1b6bc1781e49e93e
> compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
> patch:          https://syzkaller.appspot.com/x/patch.diff?x=14fe18e2400000
> 
> Note: testing is done by a robot and is best-effort only.

OK, so this smells like a problem in the previous group oom changes. Or
maybe it is not very easy to reproduce?

-- 
Michal Hocko
SUSE Labs