Re: [PATCH 1/2] net: dsa: RCU-protect dsa_ptr in struct net_device

[Greg KH <greg@kroah.com>]

On Fri, Sep 13, 2024 at 09:27:23PM +0200, Andrew Lunn wrote:
> > >  drivers/net/dsa/mt7530.c                    |   3 +-
> > >  drivers/net/dsa/ocelot/felix.c              |   3 +-
> > >  drivers/net/dsa/qca/qca8k-8xxx.c            |   3 +-
> > >  drivers/net/ethernet/broadcom/bcmsysport.c  |   8 +-
> > >  drivers/net/ethernet/mediatek/airoha_eth.c  |   2 +-
> > >  drivers/net/ethernet/mediatek/mtk_eth_soc.c |  22 +++--
> > >  drivers/net/ethernet/mediatek/mtk_ppe.c     |  15 ++-
> > >  include/linux/netdevice.h                   |   2 +-
> > >  include/net/dsa.h                           |  36 +++++--
> > >  include/net/dsa_stubs.h                     |   6 +-
> > >  net/bridge/br_input.c                       |   2 +-
> > >  net/core/dev.c                              |   3 +-
> > >  net/core/flow_dissector.c                   |  19 ++--
> > >  net/dsa/conduit.c                           |  66 ++++++++-----
> > >  net/dsa/dsa.c                               |  19 ++--
> > >  net/dsa/port.c                              |   3 +-
> > >  net/dsa/tag.c                               |   3 +-
> > >  net/dsa/tag.h                               |  19 ++--
> > >  net/dsa/tag_8021q.c                         |  10 +-
> > >  net/dsa/tag_brcm.c                          |   2 +-
> > >  net/dsa/tag_dsa.c                           |   8 +-
> > >  net/dsa/tag_qca.c                           |  10 +-
> > >  net/dsa/tag_sja1105.c                       |  22 +++--
> > >  net/dsa/user.c                              | 104 +++++++++++---------
> > >  net/ethernet/eth.c                          |   2 +-
> > >  25 files changed, 240 insertions(+), 152 deletions(-)
> > 
> > Thank you for the patch, and I would like you to not give up on it, even
> > if we will go for a different bug fix for 'stable'.
> > 
> > It's just that it makes me a bit uneasy to have this as the bug fix.
> 
> +1
> 
> We should try for a minimal fix for stable, and keep this for
> net-next, given its size.
> 
> https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
> 
> * It must be obviously correct and tested.
> * It cannot be bigger than 100 lines, with context.

It's fine if it fixes something properly, to go over those limits.