From fa8c57777ca97b94c2cf9b17fcb6941668255320 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Wed, 13 Nov 2024 21:47:41 -0500
Subject: kernel: sysctl: Fix handling of oldlenp

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/kern/kern_sysctl.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'sys/kern/kern_sysctl.c')

diff --git a/sys/kern/kern_sysctl.c b/sys/kern/kern_sysctl.c
index 6334d06..ae724b7 100644
--- a/sys/kern/kern_sysctl.c
+++ b/sys/kern/kern_sysctl.c
@@ -231,7 +231,11 @@ sysctl(struct sysctl_args *args)
         memcpy(args->oldp, &tmp_int, oldlen);
     }
 
-    return (len > oldlen) ? -ENOMEM : 0;
+    if (args->oldlenp != NULL && len > oldlen) {
+        return -ENOMEM;
+    }
+
+    return 0;
 }
 
 scret_t
-- 
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