From: Wentao_Liang Wentao_Liang_g@163.com
[ Upstream commit 6cc64770fb386b10a64a1fe09328396de7bb5262 ]
In line 849 (#1), "mlx5dr_htbl_put(cur_htbl);" drops the reference to cur_htbl and may cause cur_htbl to be freed.
However, cur_htbl is subsequently used in the next line, which may result in an use-after-free bug.
Fix this by calling mlx5dr_err() before the cur_htbl is put.
Signed-off-by: Wentao_Liang Wentao_Liang_g@163.com Signed-off-by: Saeed Mahameed saeedm@nvidia.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c index 43356fad53de..ffdfb5a94b14 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c @@ -846,9 +846,9 @@ dr_rule_handle_ste_branch(struct mlx5dr_rule *rule, new_htbl = dr_rule_rehash(rule, nic_rule, cur_htbl, ste_location, send_ste_list); if (!new_htbl) { - mlx5dr_htbl_put(cur_htbl); mlx5dr_err(dmn, "Failed creating rehash table, htbl-log_size: %d\n", cur_htbl->chunk_size); + mlx5dr_htbl_put(cur_htbl); } else { cur_htbl = new_htbl; }