On Fri, 26 Dec 2025 18:21:03 +0100,
Karsten Hohmeier wrote:
>
> Hello. I am another affected user.
> I applied the suggested patch by Takeshi on top of 6.18.2 (in case it got
> already fixed).
>
> But this just gives
>
> > Dez 26 17:24:13: dtest kernel: UBSAN: array-index-out-of-bounds in
> > sound/pci/ctxfi/ctamixer.c:344:48
> > Dez 26 17:24:13: dtest kernel: index 10 is out of range for type 'unsigned
> > char [9]'
>
> as the error. Making the struct even larger gives
>
> > Dez 26 17:39:35 dtest kernel: UBSAN: array-index-out-of-bounds in
> > sound/pci/ctxfi/ctamixer.c:344:48
> > Dez 26 17:39:35 dtest kernel: index 32 is out of range for type 'unsigned
> > char [32]'
>
> Could you take another look?
OK, then we seem scratching a wrong surface.
How about the changes below?
Takashi
-- 8< --
--- a/sound/pci/ctxfi/ctamixer.c
+++ b/sound/pci/ctxfi/ctamixer.c
@@ -205,6 +205,7 @@ static int amixer_rsc_init(struct amixer *amixer,
/* Set amixer specific operations */
amixer->rsc.ops = &amixer_basic_rsc_ops;
+ amixer->rsc.conj = 0;
amixer->ops = &amixer_ops;
amixer->input = NULL;
amixer->sum = NULL;
@@ -367,6 +368,7 @@ static int sum_rsc_init(struct sum *sum,
return err;
sum->rsc.ops = &sum_basic_rsc_ops;
+ sum->rsc.conj = 0;
return 0;
}
