Re: [PATCH net-next 0/3] virtchnl: fix fake 1-elem arrays

[Alexander Lobakin <aleksander.lobakin@intel.com>]

From: Alexander Lobakin <aleksander.lobakin@intel.com>
Date: Fri, 28 Jul 2023 17:52:04 +0200

> 6.5-rc1 started spitting warning splats when composing virtchnl
> messages, precisely on virtchnl_rss_key and virtchnl_lut:
> 
> [   84.167709] memcpy: detected field-spanning write (size 52) of single
> field "vrk->key" at drivers/net/ethernet/intel/iavf/iavf_virtchnl.c:1095
> (size 1)
> [   84.169915] WARNING: CPU: 3 PID: 11 at drivers/net/ethernet/intel/
> iavf/iavf_virtchnl.c:1095 iavf_set_rss_key+0x123/0x140 [iavf]

[...]

>  .../ethernet/intel/i40e/i40e_virtchnl_pf.c    |   9 +-
>  drivers/net/ethernet/intel/iavf/iavf.h        |   6 +-
>  drivers/net/ethernet/intel/iavf/iavf_client.c |   4 +-
>  drivers/net/ethernet/intel/iavf/iavf_client.h |   2 +-
>  .../net/ethernet/intel/iavf/iavf_virtchnl.c   |  75 +++++------
>  drivers/net/ethernet/intel/ice/ice_virtchnl.c |   2 +-
>  include/linux/avf/virtchnl.h                  | 127 +++++++++++-------
>  7 files changed, 124 insertions(+), 101 deletions(-)
> 

Tony, could you please take it via your next tree? I'd like the
validation to make sure more different host <-> guest pairs work.

(with Kees' tags, assuming he reviewed and approved the whole series, I
 asked about #2 already)

Thanks,
Olek