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-rw-r--r--fs/btrfs/backref.c12
-rw-r--r--fs/btrfs/delayed-inode.c3
-rw-r--r--fs/btrfs/export.c9
-rw-r--r--fs/btrfs/qgroup.c2
-rw-r--r--fs/btrfs/send.c10
-rw-r--r--fs/btrfs/transaction.c17
-rw-r--r--fs/btrfs/volumes.c12
7 files changed, 44 insertions, 21 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 18cf801ab..23d0372e8 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -2475,20 +2475,14 @@ struct btrfs_data_container *init_data_container(u32 total_bytes)
size_t alloc_bytes;
alloc_bytes = max_t(size_t, total_bytes, sizeof(*data));
- data = kvmalloc(alloc_bytes, GFP_KERNEL);
+ data = kvzalloc(alloc_bytes, GFP_KERNEL);
if (!data)
return ERR_PTR(-ENOMEM);
- if (total_bytes >= sizeof(*data)) {
+ if (total_bytes >= sizeof(*data))
data->bytes_left = total_bytes - sizeof(*data);
- data->bytes_missing = 0;
- } else {
+ else
data->bytes_missing = sizeof(*data) - total_bytes;
- data->bytes_left = 0;
- }
-
- data->elem_cnt = 0;
- data->elem_missed = 0;
return data;
}
diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index c6426080c..1494ce990 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -1115,6 +1115,9 @@ __btrfs_commit_inode_delayed_items(struct btrfs_trans_handle *trans,
if (ret)
return ret;
+ ret = btrfs_record_root_in_trans(trans, node->root);
+ if (ret)
+ return ret;
ret = btrfs_update_delayed_inode(trans, node->root, path, node);
return ret;
}
diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index fab7eb76e..58b0f04d7 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -161,8 +161,15 @@ struct dentry *btrfs_get_parent(struct dentry *child)
ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
if (ret < 0)
goto fail;
+ if (ret == 0) {
+ /*
+ * Key with offset of -1 found, there would have to exist an
+ * inode with such number or a root with such id.
+ */
+ ret = -EUCLEAN;
+ goto fail;
+ }
- BUG_ON(ret == 0); /* Key with offset of -1 found */
if (path->slots[0] == 0) {
ret = -ENOENT;
goto fail;
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index c14d4f70e..80ca7b435 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -4154,6 +4154,8 @@ void btrfs_qgroup_convert_reserved_meta(struct btrfs_root *root, int num_bytes)
BTRFS_QGROUP_RSV_META_PREALLOC);
trace_qgroup_meta_convert(root, num_bytes);
qgroup_convert_meta(fs_info, root->root_key.objectid, num_bytes);
+ if (!sb_rdonly(fs_info->sb))
+ add_root_meta_rsv(root, num_bytes, BTRFS_QGROUP_RSV_META_PERTRANS);
}
/*
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 9f7ffd9ef..754a9fb01 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -1015,7 +1015,15 @@ static int iterate_inode_ref(struct btrfs_root *root, struct btrfs_path *path,
ret = PTR_ERR(start);
goto out;
}
- BUG_ON(start < p->buf);
+ if (unlikely(start < p->buf)) {
+ btrfs_err(root->fs_info,
+ "send: path ref buffer underflow for key (%llu %u %llu)",
+ found_key->objectid,
+ found_key->type,
+ found_key->offset);
+ ret = -EINVAL;
+ goto out;
+ }
}
p->start = start;
} else {
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index b172091f4..5549c843f 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -700,14 +700,6 @@ again:
h->reloc_reserved = reloc_reserved;
}
- /*
- * Now that we have found a transaction to be a part of, convert the
- * qgroup reservation from prealloc to pertrans. A different transaction
- * can't race in and free our pertrans out from under us.
- */
- if (qgroup_reserved)
- btrfs_qgroup_convert_reserved_meta(root, qgroup_reserved);
-
got_it:
if (!current->journal_info)
current->journal_info = h;
@@ -741,8 +733,15 @@ got_it:
* not just freed.
*/
btrfs_end_transaction(h);
- return ERR_PTR(ret);
+ goto reserve_fail;
}
+ /*
+ * Now that we have found a transaction to be a part of, convert the
+ * qgroup reservation from prealloc to pertrans. A different transaction
+ * can't race in and free our pertrans out from under us.
+ */
+ if (qgroup_reserved)
+ btrfs_qgroup_convert_reserved_meta(root, qgroup_reserved);
return h;
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 03cfb425e..ab5d410d5 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -3381,7 +3381,17 @@ again:
mutex_unlock(&fs_info->reclaim_bgs_lock);
goto error;
}
- BUG_ON(ret == 0); /* Corruption */
+ if (ret == 0) {
+ /*
+ * On the first search we would find chunk tree with
+ * offset -1, which is not possible. On subsequent
+ * loops this would find an existing item on an invalid
+ * offset (one less than the previous one, wrong
+ * alignment and size).
+ */
+ ret = -EUCLEAN;
+ goto error;
+ }
ret = btrfs_previous_item(chunk_root, path, key.objectid,
key.type);