The trace mailbox is outputting garbage on APL data after patch 80f3d47 was applied.

0x0 [6076024018.780075] delta [] value 0x03a3b651fd7d6ccc
0x10 [26736773379.643696] delta [] value 0x0f2eac82f5e4a85a
0x20 [304907117229.521912] delta [] value 0xe5847e76513e5b06
0x30 [922837080142.584229] delta [] value 0xfae37d57071fc582
0x40 [951347671207.020264] delta [] value 0xff17f99f019e7557
0x50 [451660774.405905] delta [] value 0x00bfe0f6ff85d41d
0x60 [4067790368.758392] delta [] value 0x0132bf27fed5e827
0x70 [4336307921.055160] delta [] value 0x0102b78afee84ac4

Are we missing some PM or cache writeback ?