4 files changed, 29 insertions, 11 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 71cd456fdb6..aa91773fe31 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -667,7 +667,9 @@ int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len)
         struct btrfs_path *path;
 
         path = btrfs_alloc_path();
-        BUG_ON(!path);
+        if (!path)
+                return -ENOMEM;
+
         key.objectid = start;
         key.offset = len;
         btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY);
@@ -5494,7 +5496,8 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans,
         u32 size = sizeof(*extent_item) + sizeof(*block_info) + sizeof(*iref);
 
         path = btrfs_alloc_path();
-        BUG_ON(!path);
+        if (!path)
+                return -ENOMEM;
 
         path->leave_spinning = 1;
         ret = btrfs_insert_empty_item(trans, fs_info->extent_root, path,
@@ -7162,7 +7165,10 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
         spin_unlock(&cluster->refill_lock);
 
         path = btrfs_alloc_path();
-        BUG_ON(!path);
+        if (!path) {
+                ret = -ENOMEM;
+                goto out;
+        }
 
         inode = lookup_free_space_inode(root, block_group, path);
         if (!IS_ERR(inode)) {
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 90d4ee52cd4..f92ff0ed6e0 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -282,7 +282,8 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
         u16 csum_size = btrfs_super_csum_size(&root->fs_info->super_copy);
 
         path = btrfs_alloc_path();
-        BUG_ON(!path);
+        if (!path)
+                return -ENOMEM;
 
         if (search_commit) {
                 path->skip_locking = 1;
@@ -672,7 +673,9 @@ int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
                 btrfs_super_csum_size(&root->fs_info->super_copy);
 
         path = btrfs_alloc_path();
-        BUG_ON(!path);
+        if (!path)
+                return -ENOMEM;
+
         sector_sum = sums->sums;
 again:
         next_offset = (u64)-1;
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index fa4ef18b66b..23d1d811e2b 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -855,7 +855,8 @@ int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
         btrfs_drop_extent_cache(inode, start, end - 1, 0);
 
         path = btrfs_alloc_path();
-        BUG_ON(!path);
+        if (!path)
+                return -ENOMEM;
 again:
         recow = 0;
         split = start;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 3601f0aebdd..8be7d7a759c 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1070,7 +1070,8 @@ static noinline int run_delalloc_nocow(struct inode *inode,
         u64 ino = btrfs_ino(inode);
 
         path = btrfs_alloc_path();
-        BUG_ON(!path);
+        if (!path)
+                return -ENOMEM;
 
         nolock = is_free_space_inode(root, inode);
 
@@ -1644,7 +1645,8 @@ static int insert_reserved_file_extent(struct btrfs_trans_handle *trans,
         int ret;
 
         path = btrfs_alloc_path();
-        BUG_ON(!path);
+        if (!path)
+                return -ENOMEM;
 
         path->leave_spinning = 1;
 
@@ -3713,7 +3715,8 @@ static int btrfs_inode_by_name(struct inode *dir, struct dentry *dentry,
         int ret = 0;
 
         path = btrfs_alloc_path();
-        BUG_ON(!path);
+        if (!path)
+                return -ENOMEM;
 
         di = btrfs_lookup_dir_item(NULL, root, path, btrfs_ino(dir), name,
                                     namelen, 0);
@@ -4438,7 +4441,8 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
         int owner;
 
         path = btrfs_alloc_path();
-        BUG_ON(!path);
+        if (!path)
+                return ERR_PTR(-ENOMEM);
 
         inode = new_inode(root->fs_info->sb);
         if (!inode) {
@@ -7194,7 +7198,11 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
                 goto out_unlock;
 
         path = btrfs_alloc_path();
-        BUG_ON(!path);
+        if (!path) {
+                err = -ENOMEM;
+                drop_inode = 1;
+                goto out_unlock;
+        }
         key.objectid = btrfs_ino(inode);
         key.offset = 0;
         btrfs_set_key_type(&key, BTRFS_EXTENT_DATA_KEY);