Re: kernel BUG at net/phonet/socket.c:LINE!

From: Vito Caputo
Date: Mon Apr 13 2020 - 02:05:58 EST


On Mon, Apr 13, 2020 at 09:01:58AM +0300, Rémi Denis-Courmont wrote:
> Le maanantaina 13. huhtikuuta 2020, 8.49.14 EEST Vito Caputo a écrit :
> > > If we are to distinguish the two error scenarii, then it's the rebind
> > > case
> > > that needs a different error, but EINVAL is consistent with INET.
> >
> > Isn't the existing code is bugged if treating -EINVAL as valid and a rebind?
> >
> > The invalid size will return a NULL sobject but -EINVAL, triggering the
> > BUG_ON.
>
> How do you pass an invalid size? It's a constant `sizeof(struct sockaddr_pn)`
> in that code path.
>

duh, sorry for the noise, I should have re-read the code before replying.