kernel: sysctl: Fix handling of oldlenpmain

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 5 insertions, 1 deletions

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