On 11/29/17 14:17, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> Currently if the call to of_resolve_phandles fails then then ovcs
> is not kfree'd on the error exit path. Rather than try and make
> the clean up exit path more convoluted, fix this by just kfree'ing
> ovcs at the point of error detection and exit via the same exit
> path.
>
> Detected by CoverityScan, CID#1462296 ("Resource Leak")
>
> Fixes: f948d6d8b792 ("of: overlay: avoid race condition between applying multiple overlays")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> ---
> drivers/of/overlay.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
> index 53bc9e3f0b98..6c8efe7d8cbb 100644
> --- a/drivers/of/overlay.c
> +++ b/drivers/of/overlay.c
> @@ -708,8 +708,10 @@ int of_overlay_apply(struct device_node *tree, int *ovcs_id)
> of_overlay_mutex_lock();
>
> ret = of_resolve_phandles(tree);
> - if (ret)
> + if (ret) {
> + kfree(ovcs);
> goto err_overlay_unlock;
> + }
>
> mutex_lock(&of_mutex);
>
>
False coverity warning. ovcs is freed in free_overlay_changeset().
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