panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff830e5f78) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff830981da,ffffffff8303d94f,90,ffffffff8309d608) at __assert+0x29
uvm_pagealloc_pg(fffffd8007a5d8e0,fffffd806ace5610,6cf173000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd806ace5610,6cf173000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912
pmap_get_ptp(fffffd806ace55e0,d9e2e614000) at pmap_get_ptp+0x1c6
pmap_enter(fffffd806ace55e0,d9e2e614000,615fe000,1,20) at pmap_enter+0x389
uvm_fault_upper_lookup(ffff8000371c38e0,ffff8000371c3918,ffff8000371c37e0,ffff8000371c3860) at uvm_fault_upper_lookup+0x389
uvm_fault(fffffd806aca71c0,d9e2e613000,0,1) at uvm_fault+0x169 sys/uvm/uvm_fault.c:605
upageflttrap(ffff8000371c3a60,d9e2e613d68) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff8000371c3a60) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0xd9ec4a9d810, count: 246
End of stack trace.