nvhdmi_chmap_cea_alloc_validate_get_type calls itself recursively using chmap ops causing the double fault.
Fixed by adding the default validate_get_type handling inside nvdia validate_get_type handler.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=114311 Fixes: 67b90cb ("ALSA: hda - Create common chmap object") Reported-by: Andreas Reis andreas.reis@gmail.com Signed-off-by: Subhransu S. Prusty subhransu.s.prusty@intel.com Tested-by: Andreas Reis andreas.reis@gmail.com Signed-off-by: Vinod Koul vinod.koul@intel.com --- sound/pci/hda/patch_hdmi.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index f59e87b..a386a65 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -2827,8 +2827,12 @@ static int nvhdmi_chmap_cea_alloc_validate_get_type(struct hdac_chmap *chmap, if (cap->ca_index == 0x00 && channels == 2) return SNDRV_CTL_TLVT_CHMAP_FIXED;
- return chmap->ops.chmap_cea_alloc_validate_get_type( - chmap, cap, channels); + /* If the speaker allocation matches the channel count, it is OK. */ + if (cap->channels != channels) + return -1; + + /* all channels are remappable freely */ + return SNDRV_CTL_TLVT_CHMAP_VAR; }
static int nvhdmi_chmap_validate(struct hdac_chmap *chmap,