Nov 25 23:14:19 archbox kernel: PAX try_merge_map: em->block_len: 524288, merge->block_len: 524288 Nov 25 23:14:19 archbox kernel: PAX try_merge_map: em->block_len: 524288, merge->block_len: 524288 Nov 25 23:14:23 archbox kernel: PAX try_merge_map: em->block_len: 18446744073709551615, merge->block_len: 18446744073709551615 Nov 25 23:14:23 archbox kernel: PAX: size overflow detected in function try_merge_map fs/btrfs/extent_map.c:239 cicus.101_105 max, count: 13, decl: block_len; num: 0; context: extent_map;