kernel-pfkey: Add sanity check when deleting policies

diff --git a/src/libhydra/plugins/kernel_pfkey/kernel_pfkey_ipsec.c b/src/libhydra/plugins/kernel_pfkey/kernel_pfkey_ipsec.c
index 214feac05ff9b7bb4a50c993a40f6295cd22f23a..668c581e19a374aae276520956a6ef814d6f6cde 100644 (file)
--- a/src/libhydra/plugins/kernel_pfkey/kernel_pfkey_ipsec.c
+++ b/src/libhydra/plugins/kernel_pfkey/kernel_pfkey_ipsec.c
@@ -2543,6 +2543,11 @@ METHOD(kernel_ipsec_t, del_policy, status_t,
                first = FALSE;
        }
        enumerator->destroy(enumerator);
+       if (!to_remove)
+       {       /* sanity check */
+               this->mutex->unlock(this->mutex);
+               return SUCCESS;
+       }
        policy->used_by->remove(policy->used_by, to_remove, NULL);
        mapping = to_remove;