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Message-ID: <CAJZ5v0h7O7Rpkf1ShV1PphqB__9EQ2MPkZwrU=x_iDvTn+9bQw@mail.gmail.com>
Date: Fri, 5 Jul 2019 11:59:47 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Dmitry Vyukov <dvyukov@...gle.com>
Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>,
syzbot <syzbot+de771ae9390dffed7266@...kaller.appspotmail.com>,
Viresh Kumar <viresh.kumar@...aro.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Len Brown <len.brown@...el.com>,
LKML <linux-kernel@...r.kernel.org>,
Linux PM <linux-pm@...r.kernel.org>,
Pavel Machek <pavel@....cz>,
syzkaller-bugs <syzkaller-bugs@...glegroups.com>
Subject: Re: linux-next boot error: WARNING in corrupted
On Fri, Jul 5, 2019 at 11:37 AM Dmitry Vyukov <dvyukov@...gle.com> wrote:
>
> On Fri, Jul 5, 2019 at 11:23 AM Rafael J. Wysocki <rjw@...ysocki.net> wrote:
> >
> > On Thursday, July 4, 2019 7:27:04 PM CEST syzbot wrote:
> > > Hello,
> > >
> > > syzbot found the following crash on:
> > >
> > > HEAD commit: 16c474c9 Add linux-next specific files for 20190704
> > > git tree: linux-next
> > > console output: https://syzkaller.appspot.com/x/log.txt?x=17f8b463a00000
> > > kernel config: https://syzkaller.appspot.com/x/.config?x=983f02aae1ef31b6
> > > dashboard link: https://syzkaller.appspot.com/bug?extid=de771ae9390dffed7266
> > > compiler: gcc (GCC) 9.0.0 20181231 (experimental)
> > >
> > > Unfortunately, I don't have any reproducer for this crash yet.
> > >
> > > IMPORTANT: if you fix the bug, please add the following tag to the commit:
> > > Reported-by: syzbot+de771ae9390dffed7266@...kaller.appspotmail.com
> > >
> ...
> > > ------------[ cut here ]------------
> > > __dev_pm_qos_remove_request() called for unknown object
> > > WARNING: CPU: 1 PID: 1 at drivers/base/power/qos.c:486
> > > __dev_pm_qos_remove_request+0x3d3/0x4d0 drivers/base/power/qos.c:486
> >
> > Viresh, any chance to look at this?
> >
> > I'm a bit concerned about the freq QoS series at this point, may defer pushing it.
>
> FWIW here is full WARNING since I am hitting it locally too:
So can you try to revert commits between
0b07ee944701 PM / QOS: Pass request type to dev_pm_qos_{add|remove}_notifier()
and
95c7e46c0f80 cpufreq: Add QoS requests for userspace constraints
inclusive from linux-next (they should revert cleanly) and see if that
makes the issue go away?
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