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/openbmc/linux/drivers/net/ethernet/mellanox/mlx5/core/ |
H A D | en_stats.c | 8772cc49 Fri Mar 11 18:53:53 CST 2022 Saeed Mahameed <saeedm@nvidia.com> net/mlx5e: Fix use-after-free in mlx5e_stats_grp_sw_update_stats
We need to sync page pool stats only for active channels. Reading ethtool stats on a down netdev or a netdev with modified number of channels will result in a user-after-free, trying to access page pools that are freed already.
BUG: KASAN: use-after-free in mlx5e_stats_grp_sw_update_stats+0x465/0xf80 Read of size 8 at addr ffff888004835e40 by task ethtool/720
Fixes: cc10e84b2ec3 ("mlx5: add support for page_pool_get_stats") Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Reported-by: Jakub Kicinski <kuba@kernel.org> Acked-by: Joe Damato <jdamato@fastly.com> Link: https://lore.kernel.org/r/20220312005353.786255-1-saeed@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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