panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff82451a74) at panic+0x16b sys/kern/subr_prf.c:233
__assert(ffffffff824c3591,ffffffff824420ac,90,ffffffff8242c366) at __assert+0x25 sys/kern/subr_prf.c:161
uvm_pagealloc_pg(fffffd80070aafe0,fffffd8063efede8,347c000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline]
uvm_pagealloc_pg(fffffd80070aafe0,fffffd8063efede8,347c000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:710
uvm_pagealloc(fffffd8063efede8,347c000,0,3) at uvm_pagealloc+0x1e8 sys/uvm/uvm_page.c:918
pmap_get_ptp(fffffd8063efed98,d1f12810000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1183
pmap_enter(fffffd8063efed98,d1f12810000,6809c000,5,20) at pmap_enter+0x28b
uvm_fault_lower_lookup(ffff800025f53020,ffff800025f53058,ffff800025f52fa0) at uvm_fault_lower_lookup+0x2a7 sys/uvm/uvm_fault.c:1169
uvm_fault_lower(ffff800025f53020,ffff800025f53058,ffff800025f52fa0,0) at uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1204
uvm_fault(fffffd8064406190,d1f12813000,0,4) at uvm_fault+0x248
upageflttrap(ffff800025f53190,d1f12813a2a) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181
usertrap(ffff800025f53190) at usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7f7ffffc8f50, count: 245
End of stack trace.