panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff830e3ad9) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff8309734d,ffffffff8303dfe2,90,ffffffff8309e0da) at __assert+0x29
uvm_pagealloc_pg(fffffd8008a22160,fffffd8069c3f8f8,79c9bb000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd8069c3f8f8,79c9bb000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912
pmap_get_ptp(fffffd8069c3f8c8,f39377a8000) at pmap_get_ptp+0x1c6
pmap_enter(fffffd8069c3f8c8,f39377a8000,6f8ce000,1,21) at pmap_enter+0x389
uvm_fault_lower(ffff80002ab22630,ffff80002ab22668,ffff80002ab225b0,0) at uvm_fault_lower+0xa2d sys/uvm/uvm_fault.c:1518
uvm_fault(fffffd807556e8a8,f39377a8000,0,1) at uvm_fault+0x301 sys/uvm/uvm_fault.c:637
upageflttrap(ffff80002ab227b0,f39377a804c) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002ab227b0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0xf399f666020, count: 246
End of stack trace.