panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff8339aa61) at panic+464
__assert(ffffffff833d5cfa,ffffffff833c6bb7,90,ffffffff8336d9a2) at __assert+41
uvm_pagealloc_pg(fffffd8008bf2168,fffffd806c089338,39d633000,0) at uvm_pagealloc_pg+1355
uvm_pagealloc(fffffd806c089338,39d633000,0,3) at uvm_pagealloc+594
pmap_get_ptp(fffffd806c089300,73ac66f5000) at pmap_get_ptp+464
pmap_enter(fffffd806c089300,73ac66f5000,78b9c000,3,21) at pmap_enter+902
uvm_fault_upper(ffff80002e3e06e0,ffff80002e3e0718,ffff80002e3e05e0) at uvm_fault_upper+824
uvm_fault(fffffd806eefa1f0,73ac66f5000,0,1) at uvm_fault+408
upageflttrap(ffff80002e3e0880,73ac66f5008) at upageflttrap+169
usertrap(ffff80002e3e0880) at usertrap+1071
recall_trap() at recall_trap+8
end of kernel
end trace frame: 0x74564ff1c5e0, count: 246
End of stack trace.