kmallocsink: kmalloc(0xffffffff80000000, M_DEVBUF, M_INTWAIT) ...
panic: kmem_slab_alloc(): kernel_map ran out of space!
cpuid = 1
Trace beginning at frame 0xfffff8011834f688
kmem_slab_alloc() at kmem_slab_alloc+0x42b 0xffffffff80656bab 
kmem_slab_alloc() at kmem_slab_alloc+0x42b 0xffffffff80656bab 
_kmalloc() at _kmalloc+0x5be 0xffffffff8065737e 
fire_sysctl() at fire_sysctl+0x72 0xffffffff826000a2 
sysctl_root.isra.5() at sysctl_root.isra.5+0x166 0xffffffff80683d06 
userland_sysctl() at userland_sysctl+0x111 0xffffffff806840a1 
Debugger("panic")

CPU1 stopping CPUs: 0x0000003d