On Mon, 23 Jan 2017 08:36:28 +0100,
Arvind Yadav wrote:
>
> Here, If ioremap_nocache will fail. It will return NULL.
> Kernel can run into a NULL-pointer dereference.
> This error check will avoid NULL pointer dereference.
>
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx>
> ---
> sound/pci/ymfpci/ymfpci_main.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c
> index ffee284..8590c3f 100644
> --- a/sound/pci/ymfpci/ymfpci_main.c
> +++ b/sound/pci/ymfpci/ymfpci_main.c
> @@ -2392,6 +2392,10 @@ int snd_ymfpci_create(struct snd_card *card,
> chip->rev = pci->revision;
> chip->reg_area_phys = pci_resource_start(pci, 0);
> chip->reg_area_virt = ioremap_nocache(chip->reg_area_phys, 0x8000);
> + if (!chip->reg_area_virt) {
> + pci_disable_device(pci);
> + return -ENOMEM;
You forgot to release chip. Otherwise it leads memory.
thanks,
Takashi
_______________________________________________
Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxx
http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
