panic: uvmspace_fork: no space in map for entry in empty map
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*263754  88605      0           0  0x4000000    0  syz-executor.0
 227384   1635      0         0x2  0x4000480    1  syz-fuzzer
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
uvm_mapent_clone(ffff800000a4ae00,c000,709000,0,7,7) at uvm_mapent_clone+0x1de sys/uvm/uvm_map.c:3708
uvm_share(ffff800000a4ae00,0,7,fffffd807f008450,20004000,80000000) at uvm_share+0x4b4 uvm_mapent_share sys/uvm/uvm_map.c:3767 [inline]
uvm_share(ffff800000a4ae00,0,7,fffffd807f008450,20004000,80000000) at uvm_share+0x4b4 sys/uvm/uvm_map.c:3668
vm_impl_init_vmx(ffff800020b2cf18,ffff800020acfb48) at vm_impl_init_vmx+0xf1 sys/arch/amd64/amd64/vmm.c:1270
vm_create() at vm_create+0x1a0 vm_impl_init sys/arch/amd64/amd64/vmm.c:1385 [inline]
vm_create() at vm_create+0x1a0 sys/arch/amd64/amd64/vmm.c:1174
VOP_IOCTL(fffffd806e5649c0,c5005601,ffff800000bf1800,1,fffffd807f7c6960,ffff800020acfb48) at VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291
vn_ioctl(fffffd806ca40140,c5005601,ffff800000bf1800,ffff800020acfb48) at vn_ioctl+0xb7 sys/kern/vfs_vnops.c:533
sys_ioctl(ffff800020acfb48,ffff800022bbd0b8,ffff800022bbd100) at sys_ioctl+0x5b9
syscall(ffff800022bbd180) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800022bbd180) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1b87ef90c0, count: 4
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