Re: UBSAN: shift-out-of-bounds in sound/pci/ctxfi/cthw20k2.c:956:31

[Takashi Iwai]

On Sat, 21 Mar 2026 20:56:21 +0100,
Karsten Hohmeier wrote:
> 
> Hello Takashi,
> 
> I applied your patch and uncommented the stack dumps.
> Here is what I get.
> 
> Mar 21 20:41:34 dtest kernel: XXX invalid type 9 for hw20k2

Thanks, this looks like the cause.
Could you try the following one-liner?


thanks,

Takashi

--- a/sound/pci/ctxfi/ctdaio.c
+++ b/sound/pci/ctxfi/ctdaio.c
@@ -118,6 +118,7 @@ static unsigned int daio_device_index(enum DAIOTYP type, struct hw *hw)
 		switch (type) {
 		case SPDIFOO:	return 0;
 		case SPDIFIO:	return 0;
+		case SPDIFI1:	return 1;
 		case LINEO1:	return 4;
 		case LINEO2:	return 7;
 		case LINEO3:	return 5;