diff options
| author | Dan Carpenter <dan.carpenter@linaro.org> | 2023-10-24 08:00:53 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-20 13:59:07 +0300 |
| commit | 5a938500cd9421fa9be670218238e7496663f093 (patch) | |
| tree | 4d50d84b82d7474e28cb2d6381f3af6eb753a829 /drivers/clk | |
| parent | ed02ca7ff38ea8d79cff3ef5a2bbb4b3e6dd6e49 (diff) | |
| download | linux-5a938500cd9421fa9be670218238e7496663f093.tar.xz | |
clk: mediatek: fix double free in mtk_clk_register_pllfh()
[ Upstream commit bd54ccc0f147019dac38e7841876a7415459b875 ]
The mtk_clk_register_pll_ops() currently frees the "pll" parameter.
The function has two callers, mtk_clk_register_pll() and
mtk_clk_register_pllfh(). The first one, the _pll() function relies on
the free, but for the second _pllfh() function it causes a double free
bug.
Really the frees should be done in the caller because that's where
the allocation is.
Fixes: d7964de8a8ea ("clk: mediatek: Add new clock driver to handle FHCTL hardware")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/cd7fa365-28cc-4c34-ac64-6da57c98baa6@moroto.mountain
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/mediatek/clk-pll.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/clk/mediatek/clk-pll.c b/drivers/clk/mediatek/clk-pll.c index a4eca5fd539c..513ab6b1b322 100644 --- a/drivers/clk/mediatek/clk-pll.c +++ b/drivers/clk/mediatek/clk-pll.c @@ -321,10 +321,8 @@ struct clk_hw *mtk_clk_register_pll_ops(struct mtk_clk_pll *pll, ret = clk_hw_register(NULL, &pll->hw); - if (ret) { - kfree(pll); + if (ret) return ERR_PTR(ret); - } return &pll->hw; } @@ -340,6 +338,8 @@ struct clk_hw *mtk_clk_register_pll(const struct mtk_pll_data *data, return ERR_PTR(-ENOMEM); hw = mtk_clk_register_pll_ops(pll, data, base, &mtk_pll_ops); + if (IS_ERR(hw)) + kfree(pll); return hw; } |