panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff833a1f5e) at panic+464
__assert(ffffffff833dec81,ffffffff833cd154,90,ffffffff83373d76) at __assert+41
uvm_pagealloc_pg(fffffd8004a0a1c0,fffffd8061563458,6c000,0) at uvm_pagealloc_pg+1355
uvm_pagealloc(fffffd8061563458,6c000,0,3) at uvm_pagealloc+594
pmap_get_ptp(fffffd8061563400,1b33324000) at pmap_get_ptp+464
pmap_enter(fffffd8061563400,1b33324000,68c89000,3,21) at pmap_enter+902
uvm_fault_lower(ffff80002a30bdc0,ffff80002a30bdf8,ffff80002a30bd40) at uvm_fault_lower+1544
uvm_fault(fffffd8061673028,1b33324000,0,1) at uvm_fault+628
upageflttrap(ffff80002a30bf60,1b33324008) at upageflttrap+169
usertrap(ffff80002a30bf60) at usertrap+1071
recall_trap() at recall_trap+8
end of kernel
end trace frame: 0x78edd52d9dc0, count: 246
End of stack trace.