panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff82572e4e) at panic+0x155 sys/kern/subr_prf.c:233
__assert(ffffffff825e66ad,ffffffff8259956a,90,ffffffff8254d170) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_pagealloc_pg(fffffd800696e200,fffffd805b38c888,6d25b3000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline]
uvm_pagealloc_pg(fffffd800696e200,fffffd805b38c888,6d25b3000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709
uvm_pagealloc(fffffd805b38c888,6d25b3000,0,3) at uvm_pagealloc+0x1e8 sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd805b38c878,da4b6700000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1183
pmap_enter(fffffd805b38c878,da4b6700000,7c5e0000,3,21) at pmap_enter+0x2a0
uvm_fault_upper(ffff800029a1f1c0,ffff800029a1f1f8,ffff800029a1f0c0,0) at uvm_fault_upper+0x268 sys/uvm/uvm_fault.c:1056
uvm_fault(fffffd8065abaee0,da4b6700000,0,1) at uvm_fault+0x134 sys/uvm/uvm_fault.c:609
upageflttrap(ffff800029a1f330,da4b6700000) at upageflttrap+0x79 sys/arch/amd64/amd64/trap.c:181
usertrap(ffff800029a1f330) at usertrap+0x198 sys/arch/amd64/amd64/trap.c:403
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7f7ffffd5290, count: 246
End of stack trace.