panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff833b58bb) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff833f2a4a,ffffffff833e928e,90,ffffffff8339022a) at __assert+0x29 sys/kern/subr_prf.c:-1
uvm_pagealloc_pg(fffffd80088a1768,fffffd800b062458,1d902000,0) at uvm_pagealloc_pg+0x54b sys/uvm/uvm_page.c:707
uvm_pagealloc(fffffd800b062458,1d902000,0,3) at uvm_pagealloc+0x252 sys/uvm/uvm_page.c:913
pmap_get_ptp(fffffd800b062400,7640b9be6000) at pmap_get_ptp+0x1d0 sys/arch/amd64/amd64/pmap.c:-1
pmap_enter(fffffd800b062400,7640b9be6000,6dea8000,3,21) at pmap_enter+0x386 sys/arch/amd64/amd64/pmap.c:-1
uvm_fault_upper(ffff80003a804460,ffff80003a804498,ffff80003a804360) at uvm_fault_upper+0x338 sys/uvm/uvm_fault.c:1131
uvm_fault(fffffd8065fd15e0,7640b9be6000,0,1) at uvm_fault+0x198 sys/uvm/uvm_fault.c:635
upageflttrap(ffff80003a804600,7640b9be6aa0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003a804600) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:632
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7640b9be6ae0, count: 246
End of stack trace.