diff --git a/fs/jfs/jfs_txnmgr.c b/fs/jfs/jfs_txnmgr.c
index ffd4feece..21d442de2 100644
--- a/fs/jfs/jfs_txnmgr.c
+++ b/fs/jfs/jfs_txnmgr.c
@@ -358,6 +358,9 @@ tid_t txBegin(struct super_block *sb, int flag)
 
  INCREMENT(TxStat.txBegin);
 
+ if (!log)
+ jfs_error(sb, "%s: log is NULL\n", __func__);
+
       retry:
  if (!(flag & COMMIT_FORCE)) {
  /*