[PATCH v2 2/6] sysctl: Fixes nsm_local_state bounds

nicolas.bouchinet
2025-02-24T09:59:01Z

From: Nicolas Bouchinet <nicolas.bouchinet@ssi.gouv.fr>

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@ssi.gouv.fr>
---
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 2c8eedc6c2cc9..984ab233af8b6 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -461,7 +461,9 @@ static const 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