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net/mlx5: Fix command completion after timeout access invalid structure

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Completion on timeout should not free the driver command entry structure
as it will need to access it again once real completion event from FW
will occur.

Fixes: 73dd3a4839 ('net/mlx5: Avoid using pending command interface slots')
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Cc: kernel-team@fb.com
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Moshe Shemesh 2017-07-06 15:48:40 +03:00 committed by Saeed Mahameed
parent dc798b4cc0
commit 061870800e
1 changed files with 4 additions and 2 deletions
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6
drivers/net/ethernet/mellanox/mlx5/core/cmd.c
View file

@ -967,7 +967,7 @@ static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in,
err = wait_func(dev, ent);
if (err == -ETIMEDOUT)
goto out_free;
goto out;
ds = ent->ts2 - ent->ts1;
op = MLX5_GET(mbox_in, in->first.data, opcode);
@ -1430,6 +1430,7 @@ void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, u64 vec, bool forced)
mlx5_core_err(dev, "Command completion arrived after timeout (entry idx = %d).\n",
ent->idx);
free_ent(cmd, ent->idx);
free_cmd(ent);
}
continue;
}
@ -1488,7 +1489,8 @@ void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, u64 vec, bool forced)
free_msg(dev, ent->in);
err = err ? err : ent->status;
free_cmd(ent);
if (!forced)
free_cmd(ent);
callback(err, context);
} else {
complete(&ent->done);