linux-kernel - [PATCH v1 8/9] sysctl/infiniband: Fixes infiniband sysctl bounds

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Message-ID: <20250127142014.37834-9-nicolas.bouchinet@clip-os.org>
Date: Mon, 27 Jan 2025 15:20:05 +0100
From: nicolas.bouchinet@...p-os.org
To: linux-kernel@...r.kernel.org,
	linux-rdma@...r.kernel.org,
	linux-scsi@...r.kernel.org,
	codalist@...a.cs.cmu.edu,
	linux-nfs@...r.kernel.org,
	netdev@...r.kernel.org,
	netfilter-devel@...r.kernel.org,
	coreteam@...filter.org
Cc: Nicolas Bouchinet <nicolas.bouchinet@....gouv.fr>,
	Joel Granados <j.granados@...sung.com>,
	Bart Van Assche <bvanassche@....org>,
	Leon Romanovsky <leon@...nel.org>,
	Zhu Yanjun <yanjun.zhu@...ux.dev>,
	Jason Gunthorpe <jgg@...pe.ca>,
	Al Viro <viro@...iv.linux.org.uk>,
	Christian Brauner <brauner@...nel.org>
Subject: [PATCH v1 8/9] sysctl/infiniband: Fixes infiniband sysctl bounds

From: Nicolas Bouchinet <nicolas.bouchinet@....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@....gouv.fr>
---
 drivers/infiniband/core/iwcm.c | 4 +++-
 drivers/infiniband/core/ucma.c | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/iwcm.c b/drivers/infiniband/core/iwcm.c
index 7e3a55349e107..f4486cbd8f45a 100644
--- a/drivers/infiniband/core/iwcm.c
+++ b/drivers/infiniband/core/iwcm.c
@@ -109,7 +109,9 @@ static struct ctl_table iwcm_ctl_table[] = {
 		.data		= &default_backlog,
 		.maxlen		= sizeof(default_backlog),
 		.mode		= 0644,
-		.proc_handler	= proc_dointvec,
+		.proc_handler	= proc_dointvec_minmax,
+		.extra1		= SYSCTL_ZERO,
+		.extra2		= SYSCTL_INT_MAX,
 	},
 };
 
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index 02f1666f3cbab..6e700b9740331 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -69,7 +69,9 @@ static struct ctl_table ucma_ctl_table[] = {
 		.data		= &max_backlog,
 		.maxlen		= sizeof max_backlog,
 		.mode		= 0644,
-		.proc_handler	= proc_dointvec,
+		.proc_handler	= proc_dointvec_minmax,
+		.extra1		= SYSCTL_ZERO,
+		.extra2		= SYSCTL_INT_MAX,
 	},
 };
 
-- 
2.48.1