v4.16+ seeing many unaligned access in dequeue_task_fair() on IA64

[Luck, Tony]

v4.16 boots cleanly. But with the first bunch of merges
(Linus HEAD = 46e0d28bdb8e6d00e27a0fe9e1d15df6098f0ffb)
I see a bunch of:

ia64_handle_unaligned: 4863 callbacks suppressed
kernel unaligned access to 0xe00000031660fd74, ip=0xa0000001000f23e0
kernel unaligned access to 0xe00000033bdffbcc, ip=0xa0000001000f2370
kernel unaligned access to 0xe00000031660fd74, ip=0xa0000001000f23e0
kernel unaligned access to 0xe00000033bdffbcc, ip=0xa0000001000f2370
kernel unaligned access to 0xe00000031660fd74, ip=0xa0000001000f23e0

The addresses are all 4-byte, but not 8-byte aligned.

Any guesses before I start to bisect?

-Tony