Fatal trap 12: page fault while in kernel mode
cpuid = 2; apic id = 04
fault virtual address	= 0x313
fault code		= supervisor write data, page not present
instruction pointer	= 0x20:0xffffffff8220b607
stack pointer	        = 0x28:0xfffffe00c6177de0
frame pointer	        = 0x28:0xfffffe00c6177e10
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		= 6 (dbu_evict)
rdi: fffff8003b42e000 rsi: ffffffff823ed56f rdx: 0000000000000001
rcx: 0000000000000000  r8: 0000000000000012  r9: 0000000000000000
rax: 0000000000000001 rbx: 0000000000000003 rbp: fffffe00c6177e10
r10: 0000000000000004 r11: fffff80001e11720 r12: 00000000000002fb
r13: 0000000000000000 r14: fffff8003b42e000 r15: fffff800019c0000
trap number		= 12
panic: page fault
cpuid = 2
time = 1756365737
KDB: stack backtrace:
#0 0xffffffff80ba8f1d at kdb_backtrace+0x5d
#1 0xffffffff80b5aa11 at vpanic+0x161
#2 0xffffffff80b5a8a3 at panic+0x43
#3 0xffffffff8104dbfa at trap_pfault+0x3da
#4 0xffffffff81023d98 at calltrap+0x8
#5 0xffffffff8220c81b at dnode_buf_evict_async+0x8b
#6 0xffffffff80bbe4d2 at taskqueue_run_locked+0x182
#7 0xffffffff80bbf722 at taskqueue_thread_loop+0xc2
#8 0xffffffff80b13641 at fork_exit+0x81
#9 0xffffffff81024dfe at fork_trampoline+0xe
Uptime: 1d21h46m43s
Dumping 3172 out of 16151 MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91%

__curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:57
57		__asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (offsetof(struct pcpu,