[PATCH v1 5/9] sysctl: Fixes nsm_local_state bounds

From: nicolas . bouchinet
Date: Mon Jan 27 2025 - 09:23:06 EST


From: Nicolas Bouchinet <nicolas.bouchinet@xxxxxxxxxxx>

Bound nsm_local_state 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@xxxxxxxxxxx>
---
fs/lockd/svc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 4ec22c2f2ea3c..84752d27d0072 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -468,7 +468,9 @@ static struct ctl_table nlm_sysctls[] = {
.data = &nsm_local_state,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_INT_MAX,
},
};

--
2.48.1