* [PATCH] nvmem: core: Fix a resource leak on error in nvmem_add_cells_from_of()
@ 2020-12-19 10:55 Dan Carpenter
2021-01-05 16:23 ` Srinivas Kandagatla
0 siblings, 1 reply; 2+ messages in thread
From: Dan Carpenter @ 2020-12-19 10:55 UTC (permalink / raw)
To: Srinivas Kandagatla; +Cc: Greg Kroah-Hartman, linux-kernel, kernel-janitors
This doesn't call of_node_put() on the error path so it leads to a
memory leak.
Fixes: 0749aa25af82 ("nvmem: core: fix regression in of_nvmem_cell_get()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
The kfree_const() could just be replaced with kfree(). Someone got over
excited converting things from kfree() to kfree_const().
drivers/nvmem/core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 177f5bf27c6d..68ae6f24b57f 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -713,6 +713,7 @@ static int nvmem_add_cells_from_of(struct nvmem_device *nvmem)
cell->name, nvmem->stride);
/* Cells already added will be freed later. */
kfree_const(cell->name);
+ of_node_put(cell->np);
kfree(cell);
return -EINVAL;
}
--
2.29.2
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH] nvmem: core: Fix a resource leak on error in nvmem_add_cells_from_of()
2020-12-19 10:55 [PATCH] nvmem: core: Fix a resource leak on error in nvmem_add_cells_from_of() Dan Carpenter
@ 2021-01-05 16:23 ` Srinivas Kandagatla
0 siblings, 0 replies; 2+ messages in thread
From: Srinivas Kandagatla @ 2021-01-05 16:23 UTC (permalink / raw)
To: Dan Carpenter; +Cc: Greg Kroah-Hartman, linux-kernel, kernel-janitors
On 19/12/2020 10:55, Dan Carpenter wrote:
> This doesn't call of_node_put() on the error path so it leads to a
> memory leak.
>
> Fixes: 0749aa25af82 ("nvmem: core: fix regression in of_nvmem_cell_get()")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Applied, thanks
--srini
> ---
> The kfree_const() could just be replaced with kfree(). Someone got over
> excited converting things from kfree() to kfree_const().
>
> drivers/nvmem/core.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
> index 177f5bf27c6d..68ae6f24b57f 100644
> --- a/drivers/nvmem/core.c
> +++ b/drivers/nvmem/core.c
> @@ -713,6 +713,7 @@ static int nvmem_add_cells_from_of(struct nvmem_device *nvmem)
> cell->name, nvmem->stride);
> /* Cells already added will be freed later. */
> kfree_const(cell->name);
> + of_node_put(cell->np);
> kfree(cell);
> return -EINVAL;
> }
>
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