At Fri, 23 Sep 2011 09:24:21 +0300, Dan Carpenter wrote:

Smatch has a new check for Rosenberg type information leaks where structs are copied to the user with uninitialized stack data in them.

The status struct has a hole in it, and on some paths not all the members were initialized.

struct hdspm_status { unsigned char card_type; /* 0 1 */ /* XXX 3 bytes hole, try to pack */ enum hdspm_syncsource autosync_source; /* 4 4 */ long long unsigned int card_clock; /* 8 8 */

The hdspm_version struct had holes in it as well.

struct hdspm_version { unsigned char card_type; /* 0 1 */ char cardname[20]; /* 1 20 */ /* XXX 3 bytes hole, try to pack */ unsigned int serial; /* 24 4 */ short unsigned int firmware_rev; /* 28 2 */ /* XXX 2 bytes hole, try to pack */ int addons; /* 32 4 */

Signed-off-by: Dan Carpenter dan.carpenter@oracle.com

Applied now. Thanks.

Takashi

diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c index 214110d..bf438d1 100644 --- a/sound/pci/rme9652/hdspm.c +++ b/sound/pci/rme9652/hdspm.c @@ -6227,6 +6227,8 @@ static int snd_hdspm_hwdep_ioctl(struct snd_hwdep *hw, struct file *file, break;

case SNDRV_HDSPM_IOCTL_GET_STATUS:

• memset(&status, 0, sizeof(status));
  

• status.card_type = hdspm->io_type;

  status.autosync_source = hdspm_autosync_ref(hdspm);

@@ -6266,6 +6268,8 @@ static int snd_hdspm_hwdep_ioctl(struct snd_hwdep *hw, struct file *file, break;

case SNDRV_HDSPM_IOCTL_GET_VERSION:

• memset(&hdspm_version, 0, sizeof(hdspm_version));
  

• hdspm_version.card_type = hdspm->io_type; strncpy(hdspm_version.cardname, hdspm->card_name, sizeof(hdspm_version.cardname));