Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <8cea8a30-00a9-89aa-704c-44e4c95a3b51@kernel.dk>
Date:   Mon, 16 Jan 2023 11:01:20 -0700
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:102.0) Gecko/20100101
 Thunderbird/102.6.0
Subject: Re: [syzbot] WARNING: refcount bug in mm_update_next_owner
Content-Language: en-US
To:     Jann Horn <jannh@google.com>,
        syzbot <syzbot+1d4c86ac0fed92e3fc78@syzkaller.appspotmail.com>,
        Pavel Begunkov <asml.silence@gmail.com>,
        io-uring <io-uring@vger.kernel.org>
Cc:     akpm@linux-foundation.org, arnd@arndb.de, brauner@kernel.org,
        ebiederm@xmission.com, keescook@chromium.org,
        linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
References: <000000000000e259c105f25c92da@google.com>
 <CAG48ez23_TUMENLmi5X4F61vb6ZNiL+mfz6YE96U4Y7bgvYnSg@mail.gmail.com>
From:   Jens Axboe <axboe@kernel.dk>
In-Reply-To: <CAG48ez23_TUMENLmi5X4F61vb6ZNiL+mfz6YE96U4Y7bgvYnSg@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Precedence: bulk

On 1/16/23 10:53 AM, Jann Horn wrote:
> All 5 console logs listed on the syzkaller dashboard for this one have
> io-uring with IORING_OP_POLL_ADD somewhere. Could that be related?

It was just due to a buggy patch that's long since been fixed.

#syz invalid

-- 
Jens Axboe