df5521: firing iicbus_intr(iicbus0, event=0x99, &c)
panic: iicsmb_intr: unknown event (153)!
cpuid = 2
Trace beginning at frame 0xfffff80116ff3748
iicsmb_intr() at iicsmb_intr+0x67 0xffffffff8261f7e7 
iicsmb_intr() at iicsmb_intr+0x67 0xffffffff8261f7e7 
dfa_fire_event_sysctl() at dfa_fire_event_sysctl+0xcc 0xffffffff8263d3dc 
sysctl_root.isra.5() at sysctl_root.isra.5+0x166 0xffffffff80683d06 
userland_sysctl() at userland_sysctl+0x111 0xffffffff806840a1 
sys___sysctl() at sys___sysctl+0x74 0xffffffff80684204 
Debugger("panic")

CPU2 stopping CPUs: 0x0000003b
 stopped
Stopped at      Debugger+0x7c:  movb    $0,0xbdaf09(%rip)
db>