panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff830e3dbb) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff83096c94,ffffffff830392af,90,ffffffff83099360) at __assert+0x29
uvm_pagealloc_pg(fffffd80084f3900,fffffd806d12b510,44a539000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd806d12b510,44a539000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912
pmap_get_ptp(fffffd806d12b4e0,894a724f000) at pmap_get_ptp+0x1c6
pmap_enter(fffffd806d12b4e0,894a724f000,6c7d8000,1,20) at pmap_enter+0x389
uvm_fault_upper_lookup(ffff80002a0ba400,ffff80002a0ba438,ffff80002a0ba300,ffff80002a0ba380) at uvm_fault_upper_lookup+0x389
uvm_fault(fffffd807997bc10,894a7251000,0,1) at uvm_fault+0x169 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002a0ba580,894a7251848) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a0ba580) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7e659cba9b30, count: 246
End of stack trace.