panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff833b2fa5) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff833f0741,ffffffff833e5fa2,90,ffffffff8338c9e1) at __assert+0x29 sys/kern/subr_prf.c:-1
uvm_pagealloc_pg(fffffd80080ddc88,fffffd8066711558,44000,0) at uvm_pagealloc_pg+0x54b sys/uvm/uvm_page.c:707
uvm_pagealloc(fffffd8066711558,44000,0,3) at uvm_pagealloc+0x252 sys/uvm/uvm_page.c:913
pmap_get_ptp(fffffd8066711500,110c232000) at pmap_get_ptp+0x1d0 sys/arch/amd64/amd64/pmap.c:-1
pmap_enter(fffffd8066711500,110c232000,6cace000,1,20) at pmap_enter+0x386 sys/arch/amd64/amd64/pmap.c:-1
uvm_fault_lower_lookup(ffff80002a335de0,ffff80002a335e18,ffff80002a335d60) at uvm_fault_lower_lookup+0x369 sys/uvm/uvm_fault.c:-1
uvm_fault_lower(ffff80002a335de0,ffff80002a335e18,ffff80002a335d60) at uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1334
uvm_fault(fffffd800b063b70,110c230000,0,1) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80002a335f80,110c230000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a335f80) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:632
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x73e31a1eb500, count: 245
End of stack trace.