On Pi 3+, 4.14 branch, I occasionally get a kernel panic on boot.
With a "bad mode in data abort handler detected" message, and PC at dwc_otg_fiq_fsm

Probably some rare timing specific problem, as:

• it only happens occasionally.
• can no longer reproduce it when I attach a serial console cable and set enable_uart=1
• nor when having "quiet" in cmdline.txt

(Images are a bit blurry as it's moving text, and cannot scroll back after kernel panic.)