[PATCH v2 6/6] sysctl: Fixes max-user-freq bounds

nicolas.bouchinet
2025-02-24T09:59:11Z

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

Bound max-user-freq 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/char/hpet.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index e110857824fcb..528b43e893d49 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -730,7 +730,9 @@ static const struct ctl_table hpet_table[] = {
.data = &hpet_max_freq,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_INT_MAX,
},
};

--
2.48.1