Re: Panic: _at_r323525: iflib

Just a "me too", with a different panic after this commit:

Assertion (key.to) > 0 && (key.to) <= w_max_used_index && (key.to) < 
witness_count failed at sys/kern/subr_witness.c:2961

db_trace_self_wrapper()
vpanic()
kassert_panic()
witness_checkorder()
__mtx_lock_flags()
vmem_xalloc()
vmem_alloc()
kmem_malloc()
malloc()
device_set_driver()
device_probe_child()
device_probe()
bus_generic_attach()
pci_attach()
device_attach()
bus_generic_attach()
acpi_pcib_acpi_attach()
device_attach()
bus_generic_attach()
nexus_acpi_attach()
device_attach()
bus_generic_new_pass()
bus_set_pass()
configure()
mi_startup()
btext()

igb0_at_pci0:2:0:0:        class=0x020000 card=0x10c915d9 chip=0x10c98086 
rev=0x01 hdr=0x00 

     vendor     = 'Intel Corporation'
     device     = '82576 Gigabit Network Connection'
     class      = network
     subclass   = ethernet
igb1_at_pci0:2:0:1:        class=0x020000 card=0x10c915d9 chip=0x10c98086 
rev=0x01 hdr=0x00 

     vendor     = 'Intel Corporation'
     device     = '82576 Gigabit Network Connection'
     class      = network
     subclass   = ethernet

Reverting r323516 helps, attaching dmesg.boot after revert.