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net/mlx5: Fix tainted pointer delete is case of flow rules creation fail

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[ Upstream commit 229bedbf62b13af5aba6525ad10b62ad38d9ccb5 ]

In case of flow rule creation fail in mlx5_lag_create_port_sel_table(),
instead of previously created rules, the tainted pointer is deleted
deveral times.
Fix this bug by using correct flow rules pointers.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 352899f384 ("net/mlx5: Lag, use buckets in hash mode")
Signed-off-by: Aleksandr Mishin <amishin@t-argos.ru>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240604100552.25201-1-amishin@t-argos.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Aleksandr Mishin
2024-06-04 13:05:52 +03:00
committed by Greg Kroah-Hartman
parent e7d4485d47
commit 531eab2da2
1 changed files with 6 additions and 2 deletions
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8
drivers/net/ethernet/mellanox/mlx5/core/lag/port_sel.c
View File

@@ -88,9 +88,13 @@ static int mlx5_lag_create_port_sel_table(struct mlx5_lag *ldev,
&dest, 1);
if (IS_ERR(lag_definer->rules[idx])) {
err = PTR_ERR(lag_definer->rules[idx]);
while (i--)
while (j--)
do {
while (j--) {
idx = i * ldev->buckets + j;
mlx5_del_flow_rules(lag_definer->rules[idx]);
}
j = ldev->buckets;
} while (i--);
goto destroy_fg;
}
}