On Wed, 12 Oct 2016 02:05:50 +0200,
Takashi Sakamoto wrote:
>
> This commit is a fix for Linux 4.9-rc1.
>
> In former commit, a function call of compatibility layer for ALSA sequencer
> core was obsoleted by an alternative. Although, the alternative gets a
> pointer to kernel stack due to mis-programming. As a result, ALSA sequencer
> core unexpectedly refers over kernel stack.
>
> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> Fixes: 8ce8eb601c71 ("ALSA: seq: add an alternative way to handle ioctl requests")
> Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
Applied, thanks.
Takashi
> ---
> sound/core/seq/seq_compat.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/sound/core/seq/seq_compat.c b/sound/core/seq/seq_compat.c
> index fce5697..8c35072 100644
> --- a/sound/core/seq/seq_compat.c
> +++ b/sound/core/seq/seq_compat.c
> @@ -58,7 +58,7 @@ static int snd_seq_call_port_info_ioctl(struct snd_seq_client *client, unsigned
> goto error;
> data->kernel = NULL;
>
> - err = snd_seq_kernel_client_ctl(client->number, cmd, &data);
> + err = snd_seq_kernel_client_ctl(client->number, cmd, data);
> if (err < 0)
> goto error;
>
> --
> 2.7.4
>
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