panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff830dcd66) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff8308e0ce,ffffffff8302f60d,90,ffffffff8308f69a) at __assert+0x29
uvm_pagealloc_pg(fffffd8007a54360,fffffd806be3b138,3d5b14c000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd806be3b138,3d5b14c000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912
pmap_get_ptp(fffffd806be3b108,7ab6299c1000) at pmap_get_ptp+0x1c6
pmap_enter(fffffd806be3b108,7ab6299c1000,7e0ba000,1,20) at pmap_enter+0x389
uvm_fault_upper_lookup(ffff80002a71c5d0,ffff80002a71c608,ffff80002a71c4d0,ffff80002a71c550) at uvm_fault_upper_lookup+0x389
uvm_fault(fffffd806be138a0,7ab6299c2000,0,1) at uvm_fault+0x169 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002a71c750,7ab6299c23f0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a71c750) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7ab6299c2420, count: 246
End of stack trace.