Re: [PATCH] drivers/perf: arm_pmu_acpi: Release memory obtained by kasprintf

From: Will Deacon
Date: Fri Sep 22 2017 - 06:53:58 EST


On Wed, Sep 20, 2017 at 12:26:38PM +0530, Arvind Yadav wrote:
> Free memory region, if arm_pmu_acpi_probe is not successful.
>
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
> ---
> drivers/perf/arm_pmu_acpi.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/perf/arm_pmu_acpi.c b/drivers/perf/arm_pmu_acpi.c
> index 0a9b787..3303dd8 100644
> --- a/drivers/perf/arm_pmu_acpi.c
> +++ b/drivers/perf/arm_pmu_acpi.c
> @@ -235,6 +235,7 @@ int arm_pmu_acpi_probe(armpmu_init_fn init_fn)
> ret = armpmu_register(pmu);
> if (ret) {
> pr_warn("Failed to register PMU for CPU%d\n", cpu);
> + kfree(pmu->name);
> return ret;
> }
> }

It's a bit weird that we bail out of the loop on the first failing CPU, but
you've not changed that behaviour so your patch looks fine in isolation:

Acked-by: Will Deacon <will.deacon@xxxxxxx>

Catalin: can you pick this up as a fix, please?

Will