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btrfs: do proper error handling in btrfs_insert_xattr_item 

The space check in btrfs_insert_xattr_item is duplicated in it's caller
(do_setxattr) so we won't hit the BUG_ON. Continuing without any check
could be disasterous so turn it to a proper error handling.

Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2017-02-17 19:42:43 +01:00
parent fa2529923d
commit b9d04c607c
1 changed files with 2 additions and 1 deletions
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3
fs/btrfs/dir-item.c
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@ -80,7 +80,8 @@ int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
struct extent_buffer *leaf;
u32 data_size;
BUG_ON(name_len + data_len > BTRFS_MAX_XATTR_SIZE(root->fs_info));
if (name_len + data_len > BTRFS_MAX_XATTR_SIZE(root->fs_info))
return -ENOSPC;
key.objectid = objectid;
key.type = BTRFS_XATTR_ITEM_KEY;