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

nicolas.bouchinet
2025-02-24T09:59:09Z

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(-)

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