[PATCH net V3 0/3] net/mlx5e: Fix crashes in dynamic per-channel stats and HV VHCA agent

[Tariq Toukan]

Hi,

Since per-channel stats were converted to be allocated and published
lazily at first channel open in commit fa691d0c9c08 ("net/mlx5e:
Allocate per-channel stats dynamically at first usage"),
priv->channel_stats[] and priv->stats_nch are filled in
incrementally during interface bring-up. This opened a window in
which the various stats readers - most of them reachable from
userspace via netlink/netdev stats queries - can race with
mlx5e_open_channel() on another CPU and observe partially
initialized state. The HV VHCA stats agent, which is created
before the channels are opened, hits related problems of its own.

This series by Feng fixes the resulting crashes.

Regards,
Tariq

V3:
- Rebase on current net.

V2:
https://lore.kernel.org/all/20260617140127.573117-1-tariqt@xxxxxxxxxx/


Feng Liu (3):
  net/mlx5e: Fix HV VHCA stats zero-sized buffer allocation
  net/mlx5e: Fix HV VHCA stats agent registration race
  net/mlx5e: Fix publication race for priv->channel_stats[]

 drivers/net/ethernet/mellanox/mlx5/core/en.h  | 12 ++++++
 .../mellanox/mlx5/core/en/hv_vhca_stats.c     | 38 +++++++++++++------
 .../net/ethernet/mellanox/mlx5/core/en_main.c | 14 ++++---
 .../ethernet/mellanox/mlx5/core/en_stats.c    |  9 +++--
 .../ethernet/mellanox/mlx5/core/ipoib/ipoib.c |  3 +-
 .../ethernet/mellanox/mlx5/core/lib/hv_vhca.c |  8 +++-
 .../ethernet/mellanox/mlx5/core/lib/hv_vhca.h |  6 ++-
 7 files changed, 63 insertions(+), 27 deletions(-)


base-commit: d07d80b6a129a44538cda1549b7acf95154fb197
-- 
2.44.0