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Date: Thu, 9 Jul 2026 14:53:21 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Ujjal Roy <royujjal@gmail.com>
Cc: Linux Stable <stable@vger.kernel.org>,
	"David S . Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Simon Horman <horms@kernel.org>,
	Nikolay Aleksandrov <razor@blackwall.org>,
	Ido Schimmel <idosch@nvidia.com>, David Ahern <dsahern@kernel.org>,
	Shuah Khan <shuah@kernel.org>, Andy Roulin <aroulin@nvidia.com>,
	Yong Wang <yongwang@nvidia.com>, Petr Machata <petrm@nvidia.com>,
	Ujjal Roy <ujjal@alumnux.com>, bridge@lists.linux.dev,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-kselftest@vger.kernel.org
Subject: Re: Please backport bridge multicast exponential field encoding fix
 series to 6.1.y/6.6.y/6.12.y/6.18.y/7.0.y
Message-ID: <2026070954-activist-left-8303@gregkh>
References: <20260709101327.9508-1-royujjal@gmail.com>
 <2026070925-delay-gauntlet-bc7c@gregkh>
 <CAE2MWk=mm8_bkd54Gv1mdox6rfvx85Dd3AjOCxPz0fPAfyuWYA@mail.gmail.com>
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On Thu, Jul 09, 2026 at 06:12:40PM +0530, Ujjal Roy wrote:
> On Thu, Jul 9, 2026 at 4:34 PM Greg KH <gregkh@linuxfoundation.org> wrote:
> >
> > On Thu, Jul 09, 2026 at 10:13:27AM +0000, Ujjal Roy wrote:
> > > Hi Greg,
> > >
> > > Please consider backporting the following bridge multicast fix series to 6.1.y, 6.6.y, 6.12.y, 6.18.y and 7.0.y.
> > >
> > > 726fa7da2d8c ("ipv4: igmp: get rid of IGMPV3_{QQIC,MRC} and simplify calculation")
> > > 12cfb4ecc471 ("ipv6: mld: rename mldv2_mrc() and add mldv2_qqi()")
> > > 95bfd196f0dc ("ipv4: igmp: encode multicast exponential fields")
> > > e51560f4220a ("ipv6: mld: encode multicast exponential fields")
> > > 529dbe762de0 ("selftests: net: bridge: add MRC and QQIC field encoding tests")
> >
> > Why is any of this needed in older kernels?
> >
> > And 7.0.y is long end-of-life.
> >
> > And why, if this does fix issues, was it not tagged for stable to start
> > with?
> >
> > thanks,
> >
> > greg k-h
> 
> I already explained this in the email thread, "Please backport bridge
> multicast exponential field encoding fix series to stable kernels".

Sorry, but that's not here (remember, some of us get 1000+ emails a
day.)

Please explain why patches need to be backported when asking for them to
be backported.

thanks,

greg k-h