login: panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff830e03cc) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff83093146,ffffffff8303a683,90,ffffffff8309a5c3) at __assert+0x29
uvm_pagealloc_pg(fffffd8007f8dca0,fffffd8069bbeae8,3ecb383000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd8069bbeae8,3ecb383000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912
pmap_get_ptp(fffffd8069bbeab8,7d9670697000) at pmap_get_ptp+0x1c6
pmap_enter(fffffd8069bbeab8,7d9670697000,7dc1f000,1,20) at pmap_enter+0x389
uvm_fault_upper_lookup(ffff80002a05c170,ffff80002a05c1a8,ffff80002a05c070,ffff80002a05c0f0) at uvm_fault_upper_lookup+0x389
uvm_fault(fffffd806c5ffdd8,7d9670698000,0,2) at uvm_fault+0x169 sys/uvm/uvm_fault.c:605
upageflttrap(ffff80002a05c2f0,7d967069858c) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a05c2f0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7d9670698570, count: 246
End of stack trace.