A divide error bug in snd_pcm_write

[Takashi Iwai]

On Mon, 26 Sep 2022 19:16:48 +0200,
butt3rflyh4ck wrote:
> 
> The latest kernel upstream.
> Yes, but using mmap, you can map the runtime->status page, and then
> copy the data through memcpy to overwrite the status->state data, or
> even more, which is incredible.

Ah, then that's exactly the case my latest patch set covers.
Either the first patch or the second patch alone should work.
  https://lore.kernel.org/r/20220926135558.26580-2-tiwai@suse.de
  https://lore.kernel.org/r/20220926135558.26580-3-tiwai@suse.de

Could you verify either of them fixes the problem?


thanks,

Takashi