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Subject[PATCH] clk: max77686: Avoid double free at remove time
The clk_lookup entry is dropped at remove time by a call to
clkdev_drop(). That function frees the entry, which is also freed by the
driver core as it has been allocated through devm_kzalloc(). This
results in a double free.

Use kzalloc() instead of devm_kzalloc() to fix this.

Signed-off-by: Laurent Pinchart <>
drivers/clk/clk-max77686.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/clk-max77686.c b/drivers/clk/clk-max77686.c
index d098f72..6de05c5 100644
--- a/drivers/clk/clk-max77686.c
+++ b/drivers/clk/clk-max77686.c
@@ -130,8 +130,7 @@ static int max77686_clk_register(struct device *dev,
if (IS_ERR(clk))
return -ENOMEM;

- max77686->lookup = devm_kzalloc(dev, sizeof(struct clk_lookup),
+ max77686->lookup = kzalloc(sizeof(struct clk_lookup), GFP_KERNEL);
if (IS_ERR(max77686->lookup))
return -ENOMEM;

Laurent Pinchart

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