panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff830e0b3c) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff8309690a,ffffffff8303aac7,90,ffffffff8309b27b) at __assert+0x29
uvm_pagealloc_pg(fffffd800790bc20,fffffd806578c518,468773000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd806578c518,468773000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912
pmap_get_ptp(fffffd806578c4e8,8d0ee7ba000) at pmap_get_ptp+0x1c6
pmap_enter(fffffd806578c4e8,8d0ee7ba000,718fe000,3,21) at pmap_enter+0x389
uvm_fault_upper(ffff80002ab4c240,ffff80002ab4c278,ffff80002ab4c140,0) at uvm_fault_upper+0x376 sys/uvm/uvm_fault.c:1056
uvm_fault(fffffd806c44edd8,8d0ee7ba000,0,1) at uvm_fault+0x1b2 sys/uvm/uvm_fault.c:608
upageflttrap(ffff80002ab4c3c0,8d0ee7ba000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002ab4c3c0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7aac91627230, count: 246
End of stack trace.