Re: [alsa-devel] UBSAN bug in hda_generic.c

On Sat, Jun 25, 2016 at 01:28:00PM +0200, Takashi Iwai wrote:

On Sat, 25 Jun 2016 13:08:02 +0200, Bob Copeland wrote:

...

Hi,

I have UBSAN reporting an out-of-bounds array access (see below) on my machine. The following patch fixes the warning for me, but not sure if that is just papering over some other bug. Thanks in advance for looking!

A better check would be to put if (!path->depth) continue; before both path->path[0] and path->path[path->depth - 1] evaluations. path->depth=1 cannot exist, but path->depth=0 might be.

Could you resubmit with that fix?

Sure, patch to follow in a separate mail so that patchwork can pick it up.