panic: kernel diagnostic assertion "(pg->pg_flags & PG_BUSY) == 0" failed: file "/syzkaller/managers/main/kernel/sys/arch/amd64/amd64/pmap.c", line 1422
Starting stack trace...
panic(ffffffff82931605) at panic+0x159 sys/kern/subr_prf.c:229
__assert(ffffffff828e4d97,ffffffff8283e8a3,58e,ffffffff82895567) at __assert+0x29 sys/kern/subr_prf.c:157
pmap_destroy(fffffd807107f7a0) at pmap_destroy+0x2a4 sys/arch/amd64/amd64/pmap.c:1422
uvm_map_teardown(fffffd8074523ad8) at uvm_map_teardown+0x287 sys/uvm/uvm_map.c:2557
uvmspace_free(fffffd8074523ad8) at uvmspace_free+0x96 sys/uvm/uvm_map.c:3461
vm_teardown(ffff80002f797070) at vm_teardown+0x105 sys/dev/vmm/vmm.c:555
vm_terminate(ffff80002f797310) at vm_terminate+0x121 sys/dev/vmm/vmm.c:688
vmmioctl(a00,80045604,ffff80002f797310,1,ffff80002a6b4a68) at vmmioctl+0x291 sys/dev/vmm/vmm.c:248
VOP_IOCTL(fffffd806ed94288,80045604,ffff80002f797310,1,fffffd807f7d78f0,ffff80002a6b4a68) at VOP_IOCTL+0x91 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd8076adcd38,80045604,ffff80002f797310,ffff80002a6b4a68) at vn_ioctl+0xbb sys/kern/vfs_vnops.c:525
sys_ioctl(ffff80002a6b4a68,ffff80002f7974f0,ffff80002f797440) at sys_ioctl+0x4a5
syscall(ffff80002f7974f0) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x567894f9df0, count: 244
End of stack trace.