panic: kernel diagnostic assertion "(pg->pg_flags & PG_BUSY) == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/pmap.c", line 1422
Starting stack trace...
panic(ffffffff8295306b) at panic+0x16f sys/kern/subr_prf.c:229
__assert(ffffffff82909e0b,ffffffff829349c1,58e,ffffffff828ba35c) at __assert+0x29 sys/kern/subr_prf.c:157
pmap_destroy(fffffd806b2a04e8) at pmap_destroy+0x2c4 sys/arch/amd64/amd64/pmap.c:1422
uvm_map_teardown(fffffd80671968b0) at uvm_map_teardown+0x305 sys/uvm/uvm_map.c:2557
uvmspace_free(fffffd80671968b0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461
vm_teardown(ffff80002f934100) at vm_teardown+0x15c sys/dev/vmm/vmm.c:555
vm_terminate(ffff80002f9343a0) at vm_terminate+0x124 sys/dev/vmm/vmm.c:688
vmmioctl(a00,80045604,ffff80002f9343a0,1,ffff8000374014d8) at vmmioctl+0x2a1 sys/dev/vmm/vmm.c:248
VOP_IOCTL(fffffd806e3b7d88,80045604,ffff80002f9343a0,1,fffffd807f7d3888,ffff8000374014d8) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:264
vn_ioctl(fffffd8067ff7ac0,80045604,ffff80002f9343a0,ffff8000374014d8) at vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525
sys_ioctl(ffff8000374014d8,ffff80002f934580,ffff80002f9344d0) at sys_ioctl+0x4a9
syscall(ffff80002f934580) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff80002f934580) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x1c22c5c5a60, count: 244
End of stack trace.