panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff830e11f8) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff8309365a,ffffffff8303b274,90,ffffffff8309afba) at __assert+0x29
uvm_pagealloc_pg(fffffd80074feae0,fffffd807c57abd0,50dc95000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd807c57abd0,50dc95000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912
pmap_get_ptp(fffffd807c57aba0,a1b92afe000) at pmap_get_ptp+0x1c6
pmap_enter(fffffd807c57aba0,a1b92afe000,58d34000,3,22) at pmap_enter+0x389
uvm_fault_upper(ffff8000371bf230,ffff8000371bf268,ffff8000371bf130,0) at uvm_fault_upper+0x376 sys/uvm/uvm_fault.c:1056
uvm_fault(fffffd806be83378,a1b92afe000,0,2) at uvm_fault+0x1b2 sys/uvm/uvm_fault.c:608
upageflttrap(ffff8000371bf3b0,a1b92afe028) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff8000371bf3b0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x789786bd4d20, count: 246
End of stack trace.