Re: [PATCH] s390: fix setgid16/setuid16 handling of -1

[Greg Kroah-Hartman]

On Mon, Jan 15, 2018 at 12:52:42PM +0100, Eugene Syromiatnikov wrote:
> For some reason, the implementation of these two 16-bit ID system calls
> used cast instead of low2highgid/low2highuid macros for converting [GU]IDs,
> which leads to incorrect handling of value of -1 (which ought to be
> considered invalid).
> 
> Discovered by strace test suite.
> 
> Signed-off-by: Eugene Syromiatnikov <esyr@xxxxxxxxxx>
> ---
>  arch/s390/kernel/compat_linux.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Care to add a cc: stable on this?

thanks,

greg k-h