diff options
| -rw-r--r-- | kernel/sysctl.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 0deed82a615..8ac51714b08 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -1588,6 +1588,10 @@ struct ctl_table_header *register_sysctl_table(struct ctl_table * table) void unregister_sysctl_table(struct ctl_table_header * header) { might_sleep(); + + if (header == NULL) + return; + spin_lock(&sysctl_lock); start_unregistering(header); spin_unlock(&sysctl_lock); |