panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff83379cc9) at panic+0x1ba sys/kern/subr_prf.c:229
__assert(ffffffff833b8c73,ffffffff833a4157,90,ffffffff83355980) at __assert+0x29 sys/kern/subr_prf.c:-1
uvm_pagealloc_pg(fffffd8006cb3900,fffffd806cfbe960,3086cc000,0) at uvm_pagealloc_pg+0x54b sys/uvm/uvm_page.c:707
uvm_pagealloc(fffffd806cfbe960,3086cc000,0,3) at uvm_pagealloc+0x252 sys/uvm/uvm_page.c:913
pmap_get_ptp(fffffd806cfbe950,610d996e000) at pmap_get_ptp+0x1d0 sys/arch/amd64/amd64/pmap.c:-1
pmap_enter(fffffd806cfbe950,610d996e000,6c921000,3,20) at pmap_enter+0x39c sys/arch/amd64/amd64/pmap.c:-1
uvm_fault_upper_lookup(ffff800035d03d30,ffff800035d03d68,ffff800035d03c30,ffff800035d03cb0) at uvm_fault_upper_lookup+0x301 sys/uvm/uvm_fault.c:-1
uvm_fault(fffffd807eb7c2e0,610d996f000,0,1) at uvm_fault+0x139 sys/uvm/uvm_fault.c:632
upageflttrap(ffff800035d03ed0,610d996f020) at upageflttrap+0xa0 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff800035d03ed0) at usertrap+0x413 sys/arch/amd64/amd64/trap.c:632
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x764dcaf28a00, count: 246
End of stack trace.