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@oracle.com Fixes: 8ce8eb601c71 ("ALSA: seq: add an alternative way to handle ioctl requests") Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp --- 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;