[alsa-devel] [PATCH v3] ALSA: hda: Abort capability probe on invalid capability

On reading wrong capability pointer values driver may crash, so whenever driver discovers unknown HDA capability, log it as error and stop traversing the link list further.

Signed-off-by: Rakesh Ughreja rakesh.a.ughreja@intel.com --- sound/hda/hdac_controller.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/hda/hdac_controller.c b/sound/hda/hdac_controller.c index 978dc18..8f7d0d9 100644 --- a/sound/hda/hdac_controller.c +++ b/sound/hda/hdac_controller.c @@ -314,7 +314,8 @@ int snd_hdac_bus_parse_capabilities(struct hdac_bus *bus) break;

default: - dev_dbg(bus->dev, "Unknown capability %d\n", cur_cap); + dev_err(bus->dev, "Unknown capability %d\n", cur_cap); + cur_cap = 0; break; }