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From:   Lukas Bulwahn <lukas.bulwahn@gmail.com>
Date:   Fri, 29 Nov 2019 06:46:23 +0100
Message-ID: <CAKXUXMy_=gVVw656AL5Rih_DJrdrFLoURS-et0+dpJ2cKaw6SQ@mail.gmail.com>
Subject: Re: [PATCH 4.19 000/306] 4.19.87-stable review
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     Naresh Kamboju <naresh.kamboju@linaro.org>,
        open list <linux-kernel@vger.kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Guenter Roeck <linux@roeck-us.net>,
        Shuah Khan <shuah@kernel.org>, patches@kernelci.org,
        Ben Hutchings <ben.hutchings@codethink.co.uk>,
        lkft-triage@lists.linaro.org,
        linux- stable <stable@vger.kernel.org>,
        Netdev <netdev@vger.kernel.org>,
        Al Viro <viro@zeniv.linux.org.uk>,
        linux-fsdevel@vger.kernel.org, Eric Dumazet <edumazet@google.com>,
        =?UTF-8?Q?Jouni_H=C3=B6gander?= <jouni.hogander@unikie.com>,
        "David S. Miller" <davem@davemloft.net>
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On Thu, Nov 28, 2019 at 8:37 AM Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> On Thu, Nov 28, 2019 at 12:23:41PM +0530, Naresh Kamboju wrote:
> > On Thu, 28 Nov 2019 at 02:25, Greg Kroah-Hartman
> > <gregkh@linuxfoundation.org> wrote:
> > >
> > > This is the start of the stable review cycle for the 4.19.87 release.
> > > There are 306 patches in this series, all will be posted as a response
> > > to this one.  If anyone has any issues with these being applied, please
> > > let me know.
> > >
> > > Responses should be made by Fri, 29 Nov 2019 20:18:09 +0000.
> > > Anything received after that time might be too late.
> > >
> > > The whole patch series can be found in one patch at:
> > >         https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.19.87-rc1.gz
> > > or in the git tree and branch at:
> > >         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.19.y
> > > and the diffstat can be found below.
> > >
> > > thanks,
> > >
> > > greg k-h
> >
> > Kernel BUG noticed on x86_64 device while booting 4.19.87-rc1 kernel.
> >
> > The problematic patch is,
> >
> > > Jouni Hogander <jouni.hogander@unikie.com>
> > >     net-sysfs: Fix reference count leak in rx|netdev_queue_add_kobject
> >
> > And this kernel panic is been fixed by below patch,
> >
> > commit 48a322b6f9965b2f1e4ce81af972f0e287b07ed0
> > Author: Eric Dumazet <edumazet@google.com>
> > Date:   Wed Nov 20 19:19:07 2019 -0800
> >
> >     net-sysfs: fix netdev_queue_add_kobject() breakage
> >
> >     kobject_put() should only be called in error path.
> >
> >     Fixes: b8eb718348b8 ("net-sysfs: Fix reference count leak in
> > rx|netdev_queue_add_kobject")
> >     Signed-off-by: Eric Dumazet <edumazet@google.com>
> >     Cc: Jouni Hogander <jouni.hogander@unikie.com>
> >     Signed-off-by: David S. Miller <davem@davemloft.net>
>
> Now queued up, I'll push out -rc2 versions with this fix.
>
> greg k-h

We have also been informed about another regression these two commits
are causing:

https://lore.kernel.org/lkml/ace19af4-7cae-babd-bac5-cd3505dcd874@I-love.SAKURA.ne.jp/

I suggest to drop these two patches from this queue, and give us a
week to shake out the regressions of the change, and once ready, we
can include the complete set of fixes to stable (probably in a week or
two).

Lukas