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:   Fri, 16 Aug 2019 09:21:31 +0100
From:   Will Deacon <will@kernel.org>
To:     Bart Van Assche <bvanassche@acm.org>
Cc:     syzbot <syzbot+bd3bba6ff3fcea7a6ec6@syzkaller.appspotmail.com>,
        akpm@linux-foundation.org, ast@kernel.org, bpf@vger.kernel.org,
        daniel@iogearbox.net, davem@davemloft.net, dvyukov@google.com,
        hawk@kernel.org, hdanton@sina.com, jakub.kicinski@netronome.com,
        johannes.berg@intel.com, johannes@sipsolutions.net,
        john.fastabend@gmail.com, kafai@fb.com,
        linux-kernel@vger.kernel.org, longman@redhat.com, mingo@kernel.org,
        netdev@vger.kernel.org, paulmck@linux.vnet.ibm.com,
        peterz@infradead.org, songliubraving@fb.com,
        syzkaller-bugs@googlegroups.com, tglx@linutronix.de, tj@kernel.org,
        torvalds@linux-foundation.org, will.deacon@arm.com,
        xdp-newbies@vger.kernel.org, yhs@fb.com
Subject: Re: WARNING in is_bpf_text_address
Message-ID: <20190816082130.2shhirk53qofn6bj@willie-the-truck>
References: <00000000000000ac4f058bd50039@google.com>
 <000000000000e56cb0058fcc6c28@google.com>
 <20190815075142.vuza32plqtiuhixx@willie-the-truck>
 <456d0da6-3e16-d3fc-ecf6-7abb410bf689@acm.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <456d0da6-3e16-d3fc-ecf6-7abb410bf689@acm.org>
User-Agent: NeoMutt/20170113 (1.7.2)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Thu, Aug 15, 2019 at 06:39:56PM -0700, Bart Van Assche wrote:
> On 8/15/19 12:51 AM, Will Deacon wrote:
> > On Sat, Aug 10, 2019 at 05:24:06PM -0700, syzbot wrote:
> > > The bug was bisected to:
> > > 
> > > commit a0b0fd53e1e67639b303b15939b9c653dbe7a8c4
> > > Author: Bart Van Assche <bvanassche@acm.org>
> > > Date:   Thu Feb 14 23:00:46 2019 +0000
> > > 
> > >      locking/lockdep: Free lock classes that are no longer in use
> > > 
> > > bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=152f6a9da00000
> > > final crash:    https://syzkaller.appspot.com/x/report.txt?x=172f6a9da00000
> > > console output: https://syzkaller.appspot.com/x/log.txt?x=132f6a9da00000
> > 
> > I know you don't think much to these reports, but please could you have a
> > look (even if it's just to declare it a false positive)?
> 
> Had you already noticed the following message?
> 
> https://lore.kernel.org/bpf/d76d7a63-7854-e92d-30cb-52546d333ffe@iogearbox.net/
> 
> From that message: "Hey Bart, don't think it's related in any way to your
> commit. I'll allocate some time on working on this issue today, thanks!"

Apologies, but I hadn't received that when I sent my initial email. Anyway,
just wanted to make sure somebody was looking into it!

Will