btrfs: Verify dir_item in replay_xattr_deletes
replay_xattr_deletes calls btrfs_search_slot to get buffer and reads name. Call verify_dir_item to check name_len in replay_xattr_deletes to avoid reading out of boundary. Signed-off-by: Su Yue <suy.fnst@cn.fujitsu.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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