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| author | Dafna Hirschfeld <dafna.hirschfeld@collabora.com> | 2020-05-06 13:09:03 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2020-05-12 20:45:33 +0300 |
| commit | d7faa8ffb6be57bf8233a4b5a636d76b83c51ce7 (patch) | |
| tree | 0ad1e1b7b351746f5fec2b2f49f787c8da0e6233 /drivers/pinctrl/pinctrl-rockchip.c | |
| parent | c4f333b758ab4d8d4bc643e8bddac96082e0c379 (diff) | |
| download | linux-d7faa8ffb6be57bf8233a4b5a636d76b83c51ce7.tar.xz | |
pinctrl: rockchip: fix memleak in rockchip_dt_node_to_map
In function rockchip_dt_node_to_map, a new_map variable is
allocated by:
new_map = devm_kcalloc(pctldev->dev, map_num, sizeof(*new_map),
GFP_KERNEL);
This uses devres and attaches new_map to the pinctrl driver.
This cause a leak since new_map is not released when the probed
driver is removed. Fix it by using kcalloc to allocate new_map
and free it in `rockchip_dt_free_map`
Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20200506100903.15420-1-dafna.hirschfeld@collabora.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinctrl-rockchip.c')
| -rw-r--r-- | drivers/pinctrl/pinctrl-rockchip.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c index a9299f0bd21e..c07324d1f265 100644 --- a/drivers/pinctrl/pinctrl-rockchip.c +++ b/drivers/pinctrl/pinctrl-rockchip.c @@ -508,8 +508,8 @@ static int rockchip_dt_node_to_map(struct pinctrl_dev *pctldev, } map_num += grp->npins; - new_map = devm_kcalloc(pctldev->dev, map_num, sizeof(*new_map), - GFP_KERNEL); + + new_map = kcalloc(map_num, sizeof(*new_map), GFP_KERNEL); if (!new_map) return -ENOMEM; @@ -519,7 +519,7 @@ static int rockchip_dt_node_to_map(struct pinctrl_dev *pctldev, /* create mux map */ parent = of_get_parent(np); if (!parent) { - devm_kfree(pctldev->dev, new_map); + kfree(new_map); return -EINVAL; } new_map[0].type = PIN_MAP_TYPE_MUX_GROUP; @@ -546,6 +546,7 @@ static int rockchip_dt_node_to_map(struct pinctrl_dev *pctldev, static void rockchip_dt_free_map(struct pinctrl_dev *pctldev, struct pinctrl_map *map, unsigned num_maps) { + kfree(map); } static const struct pinctrl_ops rockchip_pctrl_ops = { |