Re: [PATCH] sctp: Fix COMM_LOST/CANT_STR_ASSOC err reporting on big-endian platforms

From: Jakub Kicinski
Date: Mon Nov 02 2020 - 18:05:33 EST


On Mon, 2 Nov 2020 10:27:17 -0300 Marcelo Ricardo Leitner wrote:
> On Fri, Oct 30, 2020 at 02:26:33PM +0100, Petr Malat wrote:
> > Commit 978aa0474115 ("sctp: fix some type cast warnings introduced since
> > very beginning")' broke err reading from sctp_arg, because it reads the
> > value as 32-bit integer, although the value is stored as 16-bit integer.
> > Later this value is passed to the userspace in 16-bit variable, thus the
> > user always gets 0 on big-endian platforms. Fix it by reading the __u16
> > field of sctp_arg union, as reading err field would produce a sparse
> > warning.
>
> Makes sense.
>
> >
> > Signed-off-by: Petr Malat <oss@xxxxxxxxx>
>
> Then, it also needs:
> Fixes: 978aa0474115 ("sctp: fix some type cast warnings introduced since very beginning")'
>
> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@xxxxxxxxx>
> (If the maintainers can't add the Fixes tag above, please keep the ack
> on the v2)

Applied, thanks!