panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144
Starting stack trace...
panic(ffffffff8295ad19) at panic+0x16f sys/kern/subr_prf.c:229
__assert(ffffffff8290c7c1,ffffffff828acb78,90,ffffffff8290ca0c) at __assert+0x29 sys/kern/subr_prf.c:157
uvm_pagealloc_pg(fffffd8006f9a8e0,fffffd807f004810,30a3000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695
uvm_pagealloc(fffffd807f004810,30a3000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917
pmap_get_ptp(fffffd807f0047c0,c28f4bdd000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215
pmap_enter(fffffd807f0047c0,c28f4bdd000,68d45000,4,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722
uvm_fault_lower_lookup(ffff800038ddd6e0,ffff800038ddd718,ffff800038ddd660) at uvm_fault_lower_lookup+0x29b sys/uvm/uvm_fault.c:1192
uvm_fault_lower(ffff800038ddd6e0,ffff800038ddd718,ffff800038ddd660,0) at uvm_fault_lower+0x62 sys/uvm/uvm_fault.c:1227
uvm_fault(fffffd8055510a60,c28f4be0000,0,4) at uvm_fault+0x255 sys/uvm/uvm_fault.c:637
upageflttrap(ffff800038ddd860,c28f4be0f8e) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
usertrap(ffff800038ddd860) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7e2d0a3086e0, count: 245
End of stack trace.