panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff8337c983) at panic+0x1ba sys/kern/subr_prf.c:229
__assert(ffffffff833b6779,ffffffff8339a6d8,90,ffffffff8334c253) at __assert+0x29 sys/kern/subr_prf.c:-1
uvm_pagealloc_pg(fffffd80070d6400,fffffd806ac4a988,8000000,0) at uvm_pagealloc_pg+0x54b sys/uvm/uvm_page.c:707
uvm_pagealloc(fffffd806ac4a988,8000000,0,3) at uvm_pagealloc+0x252 sys/uvm/uvm_page.c:913
pmap_get_ptp(fffffd806ac4a958,200000000000) at pmap_get_ptp+0x1d0 sys/arch/amd64/amd64/pmap.c:-1
pmap_enter(fffffd806ac4a958,200000000000,6b691000,3,20) at pmap_enter+0x3a3 sys/arch/amd64/amd64/pmap.c:-1
uvm_fault_upper_lookup(ffff80002a8b9090,ffff80002a8b90c8,ffff80002a8b8f90,ffff80002a8b9010) at uvm_fault_upper_lookup+0x301 sys/uvm/uvm_fault.c:-1
uvm_fault(fffffd8073f7f178,200000001000,0,2) at uvm_fault+0x139 sys/uvm/uvm_fault.c:632
upageflttrap(ffff80002a8b9230,200000001e80) at upageflttrap+0xa0 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80002a8b9230) at usertrap+0x413 sys/arch/amd64/amd64/trap.c:632
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7944556cb210, count: 246
End of stack trace.