Re: [PATCH v2 5/6] sysctl/infiniband: Fixes infiniband sysctl bounds

Joel Granados
2025-03-03T13:57:36Z

On Mon, Feb 24, 2025 at 03:41:05PM +0200, Leon Romanovsky wrote:
> On Mon, Feb 24, 2025 at 10:58:20AM +0100, nicolas.bouchinet@clip-os.org wrote:
> > From: Nicolas Bouchinet <nicolas.bouchinet@ssi.gouv.fr>
> >
> > Bound infiniband iwcm and ucma sysctl writings between SYSCTL_ZERO
> > and SYSCTL_INT_MAX.
> >
> > The proc_handler has thus been updated to proc_dointvec_minmax.
> >
> > Signed-off-by: Nicolas Bouchinet <nicolas.bouchinet@ssi.gouv.fr>
> > ---
> > drivers/infiniband/core/iwcm.c | 4 +++-
> > drivers/infiniband/core/ucma.c | 4 +++-
> > 2 files changed, 6 insertions(+), 2 deletions(-)
> >
>
> Acked-by: Leon Romanovsky <leon@kernel.org>
>
> How do you want to proceed from here? Should I take to RDMA repository?
>
> Thanks
It would be great if we push this through RDMA. Here are a few comments:
1. Having the upper bound be SYSCTL_INT_MAX is not necessary (as it is
silently capped by proc_dointvec_minmax, but it is good to have as it
gives understanding on what the spread of the values are.

2. Having the lower bound capped by SYSCTL_ZERO is needed as it will
prevent ppl trying to assing negative values to the unsigned integers

Please let me know if you will push this through RDMA, so I know to
remove it from sysctl.

Best

Reviewed-by: Joel Granados <joel.granados@kernel.org>

--

Joel Granados