login: SQDEMO e2e: M_SLEEPQ polluted with 0xAA, running sleepq lock/add/wait round trip


Fatal trap 9: general protection fault while in kernel mode
cpuid = 5; lapic id = 5
instruction pointer	= 0x8:0xffffffff8069dd54
stack pointer	        = 0x10:0xfffff80117d33a60
frame pointer	        = 0x10:0xfffff80117d33aa0
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= Idle
current thread          = pri 12 (CRIT)
kernel: type 9 trap, code=0

CPU5 stopping CPUs: 0x0000001f
 stopped
Stopped at      sleepq_lock+0x54:       lock xaddl      %edx,sleepq_chains(%r13)
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