block = btrfsic_block_hashtable_lookup(bdev, dev_bytenr,
                                               &state->block_hashtable);
        if (NULL != block) {
-               u64 bytenr;
+               u64 bytenr = 0;
                struct list_head *elem_ref_to;
                struct list_head *tmp_ref_to;
 
                        printk(KERN_INFO
                               "submit_bh(rw=0x%x, blocknr=%lu (bytenr %llu),"
                               " size=%lu, data=%p, bdev=%p)\n",
-                              rw, bh->b_blocknr,
-                              (unsigned long long)dev_bytenr, bh->b_size,
-                              bh->b_data, bh->b_bdev);
+                              rw, (unsigned long)bh->b_blocknr,
+                              (unsigned long long)dev_bytenr,
+                              (unsigned long)bh->b_size, bh->b_data,
+                              bh->b_bdev);
                btrfsic_process_written_block(dev_state, dev_bytenr,
                                              bh->b_data, bh->b_size, NULL,
                                              NULL, bh, rw);
                        printk(KERN_INFO
                               "submit_bio(rw=0x%x, bi_vcnt=%u,"
                               " bi_sector=%lu (bytenr %llu), bi_bdev=%p)\n",
-                              rw, bio->bi_vcnt, bio->bi_sector,
+                              rw, bio->bi_vcnt, (unsigned long)bio->bi_sector,
                               (unsigned long long)dev_bytenr,
                               bio->bi_bdev);