Re: WARNING in add_event_to_ctx

From: Dmitry Vyukov <dvyukov@google.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: syzbot <syzbot+704bfe2c7d156640ad7a@syzkaller.appspotmail.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Arnaldo Carvalho de Melo <acme@redhat.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	arvid.brodin@alten.se, Alexei Starovoitov <ast@kernel.org>,
	bpf <bpf@vger.kernel.org>, Daniel Borkmann <daniel@iogearbox.net>,
	David Miller <davem@davemloft.net>, Josef Bacik <jbacik@fb.com>,
	jolsa@redhat.com, Martin KaFai Lau <kafai@fb.com>,
	kernel-team@fb.com, LKML <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>, Ingo Molnar <mingo@redhat.com>,
	Namhyung Kim <namhyung@kernel.org>,
	netdev <netdev@vger.kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Song Liu <songliubraving@fb.com>,
	syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Cong Wang <xiyou.wangcong@gmail.com>, Yonghong Song <yhs@fb.com>
Subject: Re: WARNING in add_event_to_ctx
Date: Fri, 10 Jan 2020 15:48:34 +0100	[thread overview]
Message-ID: <CACT4Y+Z2M3p+26KROAAnGH-HuuWZdu8Cx1TrN7YhWTh9Exj+rQ@mail.gmail.com> (raw)
In-Reply-To: <20200110094502.2d6015ab@gandalf.local.home>

On Fri, Jan 10, 2020 at 3:45 PM Steven Rostedt <rostedt@goodmis.org> wrote:
>
> On Thu, 09 Jan 2020 22:50:00 -0800
> syzbot <syzbot+704bfe2c7d156640ad7a@syzkaller.appspotmail.com> wrote:
>
> > syzbot suspects this bug was fixed by commit:
>
> I think these reports need some more information. Like the sample crash
> report, so we don't need to be clicking through links to find it.
> Because I have no idea what bug was fixed.

Hi Steve,

Isn't it threaded to the original report in your client? The message
has both matching subject and In-Reply-To header. At least that was
the idea.

> > commit 311633b604063a8a5d3fbc74d0565b42df721f68
> > Author: Cong Wang <xiyou.wangcong@gmail.com>
> > Date:   Wed Jul 10 06:24:54 2019 +0000
> >
> >      hsr: switch ->dellink() to ->ndo_uninit()
> >
> > bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1005033ee00000
> > start commit:   6fbc7275 Linux 5.2-rc7
> > git tree:       upstream
> > kernel config:  https://syzkaller.appspot.com/x/.config?x=bff6583efcfaed3f
> > dashboard link: https://syzkaller.appspot.com/bug?extid=704bfe2c7d156640ad7a
> > syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1016165da00000
> > C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12b27be5a00000
> >
> > If the result looks correct, please mark the bug fixed by replying with:
> >
> > #syz fix: hsr: switch ->dellink() to ->ndo_uninit()
> >
> > For information about bisection process see: https://goo.gl/tpsmEJ#bisection
>
> --
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