On 11/11/2020 02:16, Yu Kuai wrote:
> If clk_notifier_register() failed, ttc_setup_clockevent() will return
> without freeing 'ttcce', which will leak memory.
>
> Fixes: 70504f311d4b ("clocksource/drivers/cadence_ttc: Convert init function
> to return error")
> Reported-by: Hulk Robot <[email protected]>
> Signed-off-by: Yu Kuai <[email protected]>
> Reviewed-by: Michal Simek <[email protected]>
> ---
> drivers/clocksource/timer-cadence-ttc.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/clocksource/timer-cadence-ttc.c
> b/drivers/clocksource/timer-cadence-ttc.c
> index 80e960602030..32b9560ce408 100644
> --- a/drivers/clocksource/timer-cadence-ttc.c
> +++ b/drivers/clocksource/timer-cadence-ttc.c
> @@ -426,6 +426,7 @@ static int __init ttc_setup_clockevent(struct clk *clk,
> &ttcce->ttc.clk_rate_change_nb);
> if (err) {
> pr_warn("Unable to register clock notifier.\n");
> + kfree(ttcce);
> return err;
> }
Please fix the error path by adding a label (eg. out_kfree) and jump to
it in case of error everywhere in the function.
out_kfree:
kfree(ttcce);
return err;
--
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