uvm_fault(0xffff800000d84988, 0x8, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff8302db97 cs 8 rflags 10282 cr2 8 cpl d rsp ffff800029a0dd60
gsbase 0xffff800028fe3ff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff8302db97
Starting stack trace...
panic(ffffffff84b6aae0) at panic+0x25b sys/kern/subr_prf.c:229
kerntrap(ffff800029a0dcb0) at kerntrap+0x362
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
knote_processfork(ffffffff85d370e0,7f53) at knote_processfork+0x287 sys/kern/kern_event.c:2246
fork1(ffffffff85d36d80,f0,ffffffff830a12e0,0,0,ffff800029a0e040) at fork1+0x1225 sys/kern/kern_fork.c:511
kthread_create(ffffffff830a12e0,0,0,ffffffff84b844a0) at kthread_create+0xa8 sys/kern/kern_kthread.c:61
nfs_getset_niothreads(1) at nfs_getset_niothreads+0xe7 sys/nfs/nfs_syscalls.c:702
nfs_sysctl(ffff800029a0e248,1,0,ffff800029a0e220,200000000200,0,ffff800029a0e4a0) at nfs_sysctl+0x102 sys/nfs/nfs_vfsops.c:894
sys_sysctl(ffff8000322e5ca8,ffff800029a0e4a0,ffff800029a0e400) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309
syscall(ffff800029a0e4a0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800029a0e4a0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x6d14e1883f0, count: 246
End of stack trace.