panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff830e1479) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff83095269,ffffffff830381f4,90,ffffffff83098330) at __assert+0x29
uvm_pagealloc_pg(fffffd800893ede0,fffffd806bde9328,d99e000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd806bde9328,d99e000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912
pmap_get_ptp(fffffd806bde92f8,1b33d1c000) at pmap_get_ptp+0x1c6
pmap_enter(fffffd806bde92f8,1b33d1c000,5ae24000,3,20) at pmap_enter+0x389
uvm_fault_lower_lookup(ffff80002a4f4f10,ffff80002a4f4f48,ffff80002a4f4e90) at uvm_fault_lower_lookup+0x33c sys/uvm/uvm_fault.c:1192
uvm_fault_lower(ffff80002a4f4f10,ffff80002a4f4f48,ffff80002a4f4e90,0) at uvm_fault_lower+0x74 sys/uvm/uvm_fault.c:1227
uvm_fault(fffffd805bf73c20,1b33d1f000,0,2) at uvm_fault+0x301 sys/uvm/uvm_fault.c:637
upageflttrap(ffff80002a4f5090,1b33d1fea4) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80002a4f5090) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x74487b57cb00, count: 245
End of stack trace.